version: 3.4.3

Signed-off-by: Gyuho Lee <leegyuho@amazon.com>

.travis.yml

@@ -6,7 +6,7 @@ sudo: required
 services: docker
 
 go:
-- 1.12.9
+- 1.12.12
 
 notifications:
   on_success: never
@@ -27,9 +27,9 @@ env:
 matrix:
   fast_finish: true
   allow_failures:
-  - go: 1.12.9
+  - go: 1.12.12
     env: TARGET=linux-amd64-grpcproxy
-  - go: 1.12.9
+  - go: 1.12.12
     env: TARGET=linux-386-unit
 
 before_install:

.words

@@ -95,6 +95,7 @@ jitter
 WithBackoff
 BackoffLinearWithJitter
 jitter
+WithDialer
 WithMax
 ServerStreams
 BidiStreams

Makefile

@@ -51,7 +51,7 @@ docker-remove:
 
 
 
-GO_VERSION ?= 1.12.9
+GO_VERSION ?= 1.12.12
 ETCD_VERSION ?= $(shell git rev-parse --short HEAD || echo "GitNotFound")
 
 TEST_SUFFIX = $(shell date +%s | base64 | head -c 15)
@@ -65,11 +65,11 @@ endif
 
 
 # Example:
-#   GO_VERSION=1.12.9 make build-docker-test
+#   GO_VERSION=1.12.12 make build-docker-test
 #   make build-docker-test
 #
 #   gcloud docker -- login -u _json_key -p "$(cat /etc/gcp-key-etcd-development.json)" https://gcr.io
-#   GO_VERSION=1.12.9 make push-docker-test
+#   GO_VERSION=1.12.12 make push-docker-test
 #   make push-docker-test
 #
 #   gsutil -m acl ch -u allUsers:R -r gs://artifacts.etcd-development.appspot.com

clientv3/balancer/resolver/endpoint/endpoint.go

@@ -16,7 +16,9 @@
 package endpoint
 
 import (
+	"context"
 	"fmt"
+	"net"
 	"net/url"
 	"strings"
 	"sync"
@@ -228,13 +230,18 @@ func ParseTarget(target string) (string, string, error) {
 	return parts[0], parts[1], nil
 }
 
-// ParseHostPort splits a "<host>:<port>" string into the host and port parts.
+// Dialer dials a endpoint using net.Dialer.
-// The port part is optional.
+// Context cancelation and timeout are supported.
-func ParseHostPort(hostPort string) (host string, port string) {
+func Dialer(ctx context.Context, dialEp string) (net.Conn, error) {
-	parts := strings.SplitN(hostPort, ":", 2)
+	proto, host, _ := ParseEndpoint(dialEp)
-	host = parts[0]
+	select {
-	if len(parts) > 1 {
+	case <-ctx.Done():
-		port = parts[1]
+		return nil, ctx.Err()
+	default:
 	}
-	return host, port
+	dialer := &net.Dialer{}
+	if deadline, ok := ctx.Deadline(); ok {
+		dialer.Deadline = deadline
+	}
+	return dialer.DialContext(ctx, proto, host)
 }

clientv3/client.go

@@ -230,24 +230,17 @@ func (c *Client) dialSetupOpts(creds grpccredentials.TransportCredentials, dopts
 	}
 	opts = append(opts, dopts...)
 
-	// Provide a net dialer that supports cancelation and timeout.
+	dialer := endpoint.Dialer
-	f := func(dialEp string, t time.Duration) (net.Conn, error) {
-		proto, host, _ := endpoint.ParseEndpoint(dialEp)
-		select {
-		case <-c.ctx.Done():
-			return nil, c.ctx.Err()
-		default:
-		}
-		dialer := &net.Dialer{Timeout: t}
-		return dialer.DialContext(c.ctx, proto, host)
-	}
-	opts = append(opts, grpc.WithDialer(f))
-
 	if creds != nil {
 		opts = append(opts, grpc.WithTransportCredentials(creds))
+		// gRPC load balancer workaround. See credentials.transportCredential for details.
+		if credsDialer, ok := creds.(TransportCredentialsWithDialer); ok {
+			dialer = credsDialer.Dialer
+		}
 	} else {
 		opts = append(opts, grpc.WithInsecure())
 	}
+	opts = append(opts, grpc.WithContextDialer(dialer))
 
 	// Interceptor retry and backoff.
 	// TODO: Replace all of clientv3/retry.go with interceptor based retry, or with
@@ -266,7 +259,10 @@ func (c *Client) dialSetupOpts(creds grpccredentials.TransportCredentials, dopts
 
 // Dial connects to a single endpoint using the client's config.
 func (c *Client) Dial(ep string) (*grpc.ClientConn, error) {
-	creds := c.directDialCreds(ep)
+	creds, err := c.directDialCreds(ep)
+	if err != nil {
+		return nil, err
+	}
 	// Use the grpc passthrough resolver to directly dial a single endpoint.
 	// This resolver passes through the 'unix' and 'unixs' endpoints schemes used
 	// by etcd without modification, allowing us to directly dial endpoints and
@@ -369,8 +365,8 @@ func (c *Client) dial(target string, creds grpccredentials.TransportCredentials,
 	return conn, nil
 }
 
-func (c *Client) directDialCreds(ep string) grpccredentials.TransportCredentials {
+func (c *Client) directDialCreds(ep string) (grpccredentials.TransportCredentials, error) {
-	_, hostPort, scheme := endpoint.ParseEndpoint(ep)
+	_, host, scheme := endpoint.ParseEndpoint(ep)
 	creds := c.creds
 	if len(scheme) != 0 {
 		creds = c.processCreds(scheme)
@@ -379,12 +375,17 @@ func (c *Client) directDialCreds(ep string) grpccredentials.TransportCredentials
 			// Set the server name must to the endpoint hostname without port since grpc
 			// otherwise attempts to check if x509 cert is valid for the full endpoint
 			// including the scheme and port, which fails.
-			host, _ := endpoint.ParseHostPort(hostPort)
+			overrideServerName, _, err := net.SplitHostPort(host)
-			clone.OverrideServerName(host)
+			if err != nil {
+				// Either the host didn't have a port or the host could not be parsed. Either way, continue with the
+				// original host string.
+				overrideServerName = host
+			}
+			clone.OverrideServerName(overrideServerName)
 			creds = clone
 		}
 	}
-	return creds
+	return creds, nil
 }
 
 func (c *Client) dialWithBalancerCreds(ep string) grpccredentials.TransportCredentials {
@@ -663,3 +664,9 @@ func IsConnCanceled(err error) bool {
 	// <= gRPC v1.7.x returns 'errors.New("grpc: the client connection is closing")'
 	return strings.Contains(err.Error(), "grpc: the client connection is closing")
 }
+
+// TransportCredentialsWithDialer is for a gRPC load balancer workaround. See credentials.transportCredential for details.
+type TransportCredentialsWithDialer interface {
+	grpccredentials.TransportCredentials
+	Dialer(ctx context.Context, dialEp string) (net.Conn, error)
+}

clientv3/credentials/credentials.go

@@ -22,6 +22,7 @@ import (
 	"net"
 	"sync"
 
+	"go.etcd.io/etcd/clientv3/balancer/resolver/endpoint"
 	"go.etcd.io/etcd/etcdserver/api/v3rpc/rpctypes"
 	grpccredentials "google.golang.org/grpc/credentials"
 )
@@ -65,38 +66,37 @@ func (b *bundle) NewWithMode(mode string) (grpccredentials.Bundle, error) {
 }
 
 // transportCredential implements "grpccredentials.TransportCredentials" interface.
+// transportCredential wraps TransportCredentials to track which
+// addresses are dialed for which endpoints, and then sets the authority when checking the endpoint's cert to the
+// hostname or IP of the dialed endpoint.
+// This is a workaround of a gRPC load balancer issue. gRPC uses the dialed target's service name as the authority when
+// checking all endpoint certs, which does not work for etcd servers using their hostname or IP as the Subject Alternative Name
+// in their TLS certs.
+// To enable, include both WithTransportCredentials(creds) and WithContextDialer(creds.Dialer)
+// when dialing.
 type transportCredential struct {
 	gtc grpccredentials.TransportCredentials
+	mu  sync.Mutex
+	// addrToEndpoint maps from the connection addresses that are dialed to the hostname or IP of the
+	// endpoint provided to the dialer when dialing
+	addrToEndpoint map[string]string
 }
 
 func newTransportCredential(cfg *tls.Config) *transportCredential {
 	return &transportCredential{
 		gtc:            grpccredentials.NewTLS(cfg),
+		addrToEndpoint: map[string]string{},
 	}
 }
 
 func (tc *transportCredential) ClientHandshake(ctx context.Context, authority string, rawConn net.Conn) (net.Conn, grpccredentials.AuthInfo, error) {
-	// Only overwrite when authority is an IP address!
+	// Set the authority when checking the endpoint's cert to the hostname or IP of the dialed endpoint
-	// Let's say, a server runs SRV records on "etcd.local" that resolves
+	tc.mu.Lock()
-	// to "m1.etcd.local", and its SAN field also includes "m1.etcd.local".
+	dialEp, ok := tc.addrToEndpoint[rawConn.RemoteAddr().String()]
-	// But what if SAN does not include its resolved IP address (e.g. 127.0.0.1)?
+	tc.mu.Unlock()
-	// Then, the server should only authenticate using its DNS hostname "m1.etcd.local",
+	if ok {
-	// instead of overwriting it with its IP address.
+		_, host, _ := endpoint.ParseEndpoint(dialEp)
-	// And we do not overwrite "localhost" either. Only overwrite IP addresses!
+		authority = host
-	if isIP(authority) {
-		target := rawConn.RemoteAddr().String()
-		if authority != target {
-			// When user dials with "grpc.WithDialer", "grpc.DialContext" "cc.parsedTarget"
-			// update only happens once. This is problematic, because when TLS is enabled,
-			// retries happen through "grpc.WithDialer" with static "cc.parsedTarget" from
-			// the initial dial call.
-			// If the server authenticates by IP addresses, we want to set a new endpoint as
-			// a new authority. Otherwise
-			// "transport: authentication handshake failed: x509: certificate is valid for 127.0.0.1, 192.168.121.180, not 192.168.223.156"
-			// when the new dial target is "192.168.121.180" whose certificate host name is also "192.168.121.180"
-			// but client tries to authenticate with previously set "cc.parsedTarget" field "192.168.223.156"
-			authority = target
-		}
 	}
 	return tc.gtc.ClientHandshake(ctx, authority, rawConn)
 }
@@ -115,8 +115,15 @@ func (tc *transportCredential) Info() grpccredentials.ProtocolInfo {
 }
 
 func (tc *transportCredential) Clone() grpccredentials.TransportCredentials {
+	copy := map[string]string{}
+	tc.mu.Lock()
+	for k, v := range tc.addrToEndpoint {
+		copy[k] = v
+	}
+	tc.mu.Unlock()
 	return &transportCredential{
 		gtc:            tc.gtc.Clone(),
+		addrToEndpoint: copy,
 	}
 }
 
@@ -124,6 +131,17 @@ func (tc *transportCredential) OverrideServerName(serverNameOverride string) err
 	return tc.gtc.OverrideServerName(serverNameOverride)
 }
 
+func (tc *transportCredential) Dialer(ctx context.Context, dialEp string) (net.Conn, error) {
+	// Keep track of which addresses are dialed for which endpoints
+	conn, err := endpoint.Dialer(ctx, dialEp)
+	if conn != nil {
+		tc.mu.Lock()
+		tc.addrToEndpoint[conn.RemoteAddr().String()] = dialEp
+		tc.mu.Unlock()
+	}
+	return conn, err
+}
+
 // perRPCCredential implements "grpccredentials.PerRPCCredentials" interface.
 type perRPCCredential struct {
 	authToken   string

clientv3/integration/cluster_test.go

@@ -276,8 +276,7 @@ func TestMemberPromote(t *testing.T) {
 		select {
 		case <-time.After(500 * time.Millisecond):
 		case <-timeout:
-			t.Errorf("failed all attempts to promote learner member, last error: %v", err)
+			t.Fatalf("failed all attempts to promote learner member, last error: %v", err)
-			break
 		}
 
 		_, err = capi.MemberPromote(context.Background(), learnerID)

clientv3/snapshot/v3_snapshot.go

@@ -39,6 +39,7 @@ import (
 	"go.etcd.io/etcd/mvcc"
 	"go.etcd.io/etcd/mvcc/backend"
 	"go.etcd.io/etcd/pkg/fileutil"
+	"go.etcd.io/etcd/pkg/traceutil"
 	"go.etcd.io/etcd/pkg/types"
 	"go.etcd.io/etcd/raft"
 	"go.etcd.io/etcd/raft/raftpb"
@@ -384,7 +385,7 @@ func (s *v3Manager) saveDB() error {
 	lessor := lease.NewLessor(s.lg, be, lease.LessorConfig{MinLeaseTTL: math.MaxInt64})
 
 	mvs := mvcc.NewStore(s.lg, be, lessor, (*initIndex)(&commit), mvcc.StoreConfig{CompactionBatchLimit: math.MaxInt32})
-	txn := mvs.Write()
+	txn := mvs.Write(traceutil.TODO())
 	btx := be.BatchTx()
 	del := func(k, v []byte) error {
 		txn.DeleteRange(k, nil)

embed/config.go

@@ -303,8 +303,8 @@ type Config struct {
 	// It can be multiple when "Logger" is zap.
 	LogOutputs []string `json:"log-outputs"`
 
-	// zapLoggerBuilder is used to build the zap logger.
+	// ZapLoggerBuilder is used to build the zap logger.
-	zapLoggerBuilder func(*Config) error
+	ZapLoggerBuilder func(*Config) error
 
 	// logger logs server-side operations. The default is nil,
 	// and "setupLogging" must be called before starting server.

embed/config_logging.go

@@ -181,8 +181,8 @@ func (cfg *Config) setupLogging() error {
 				// TODO: remove "Debug" check in v3.5
 				grpc.EnableTracing = true
 			}
-			if cfg.zapLoggerBuilder == nil {
+			if cfg.ZapLoggerBuilder == nil {
-				cfg.zapLoggerBuilder = func(c *Config) error {
+				cfg.ZapLoggerBuilder = func(c *Config) error {
 					var err error
 					c.logger, err = copied.Build()
 					if err != nil {
@@ -235,8 +235,8 @@ func (cfg *Config) setupLogging() error {
 				syncer,
 				lvl,
 			)
-			if cfg.zapLoggerBuilder == nil {
+			if cfg.ZapLoggerBuilder == nil {
-				cfg.zapLoggerBuilder = func(c *Config) error {
+				cfg.ZapLoggerBuilder = func(c *Config) error {
 					c.logger = zap.New(cr, zap.AddCaller(), zap.ErrorOutput(syncer))
 					c.loggerMu.Lock()
 					defer c.loggerMu.Unlock()
@@ -252,7 +252,7 @@ func (cfg *Config) setupLogging() error {
 			}
 		}
 
-		err := cfg.zapLoggerBuilder(cfg)
+		err := cfg.ZapLoggerBuilder(cfg)
 		if err != nil {
 			return err
 		}

embed/serve.go

@@ -189,7 +189,7 @@ func (sctx *serveCtx) serve(
 		sctx.serversC <- &servers{secure: true, grpc: gs, http: srv}
 		if sctx.lg != nil {
 			sctx.lg.Info(
-				"serving client traffic insecurely",
+				"serving client traffic securely",
 				zap.String("address", sctx.l.Addr().String()),
 			)
 		} else {

etcdctl/ctlv3/command/member_command.go

@@ -158,12 +158,14 @@ func memberAddCommandFunc(cmd *cobra.Command, args []string) {
 	if _, ok := (display).(*simplePrinter); ok {
 		ctx, cancel = commandCtx(cmd)
 		listResp, err := cli.MemberList(ctx)
-		// get latest member list; if there's failover new member might have outdated list
+		// make sure the member who served member list request has the latest member list.
+		syncedMemberSet := make(map[uint64]struct{})
+		syncedMemberSet[resp.Header.MemberId] = struct{}{} // the member who served member add is guaranteed to have the latest member list.
 		for {
 			if err != nil {
 				ExitWithError(ExitError, err)
 			}
-			if listResp.Header.MemberId == resp.Header.MemberId {
+			if _, ok := syncedMemberSet[listResp.Header.MemberId]; ok {
 				break
 			}
 			// quorum get to sync cluster list
@@ -171,7 +173,7 @@ func memberAddCommandFunc(cmd *cobra.Command, args []string) {
 			if gerr != nil {
 				ExitWithError(ExitError, err)
 			}
-			resp.Header.MemberId = gresp.Header.MemberId
+			syncedMemberSet[gresp.Header.MemberId] = struct{}{}
 			listResp, err = cli.MemberList(ctx)
 		}
 		cancel()

etcdserver/api/membership/cluster.go

@@ -565,6 +565,7 @@ func (c *RaftCluster) SetVersion(ver *semver.Version, onSet func(*zap.Logger, *s
 			plog.Noticef("set the initial cluster version to %v", version.Cluster(ver.String()))
 		}
 	}
+	oldVer := c.version
 	c.version = ver
 	mustDetectDowngrade(c.lg, c.version)
 	if c.v2store != nil {
@@ -573,7 +574,10 @@ func (c *RaftCluster) SetVersion(ver *semver.Version, onSet func(*zap.Logger, *s
 	if c.be != nil {
 		mustSaveClusterVersionToBackend(c.be, ver)
 	}
-	ClusterVersionMetrics.With(prometheus.Labels{"cluster_version": ver.String()}).Set(1)
+	if oldVer != nil {
+		ClusterVersionMetrics.With(prometheus.Labels{"cluster_version": version.Cluster(oldVer.String())}).Set(0)
+	}
+	ClusterVersionMetrics.With(prometheus.Labels{"cluster_version": version.Cluster(ver.String())}).Set(1)
 	onSet(c.lg, ver)
 }
 

etcdserver/api/rafthttp/stream.go

@@ -57,6 +57,7 @@ var (
 		"3.1.0": {streamTypeMsgAppV2, streamTypeMessage},
 		"3.2.0": {streamTypeMsgAppV2, streamTypeMessage},
 		"3.3.0": {streamTypeMsgAppV2, streamTypeMessage},
+		"3.4.0": {streamTypeMsgAppV2, streamTypeMessage},
 	}
 )
 

etcdserver/apply.go

@@ -26,6 +26,7 @@ import (
 	"go.etcd.io/etcd/lease"
 	"go.etcd.io/etcd/mvcc"
 	"go.etcd.io/etcd/mvcc/mvccpb"
+	"go.etcd.io/etcd/pkg/traceutil"
 	"go.etcd.io/etcd/pkg/types"
 
 	"github.com/gogo/protobuf/proto"
@@ -43,17 +44,18 @@ type applyResult struct {
 	// to being logically reflected by the node. Currently only used for
 	// Compaction requests.
 	physc <-chan struct{}
+	trace *traceutil.Trace
 }
 
 // applierV3 is the interface for processing V3 raft messages
 type applierV3 interface {
 	Apply(r *pb.InternalRaftRequest) *applyResult
 
-	Put(txn mvcc.TxnWrite, p *pb.PutRequest) (*pb.PutResponse, error)
+	Put(txn mvcc.TxnWrite, p *pb.PutRequest) (*pb.PutResponse, *traceutil.Trace, error)
-	Range(txn mvcc.TxnRead, r *pb.RangeRequest) (*pb.RangeResponse, error)
+	Range(ctx context.Context, txn mvcc.TxnRead, r *pb.RangeRequest) (*pb.RangeResponse, error)
 	DeleteRange(txn mvcc.TxnWrite, dr *pb.DeleteRangeRequest) (*pb.DeleteRangeResponse, error)
 	Txn(rt *pb.TxnRequest) (*pb.TxnResponse, error)
-	Compaction(compaction *pb.CompactionRequest) (*pb.CompactionResponse, <-chan struct{}, error)
+	Compaction(compaction *pb.CompactionRequest) (*pb.CompactionResponse, <-chan struct{}, *traceutil.Trace, error)
 
 	LeaseGrant(lc *pb.LeaseGrantRequest) (*pb.LeaseGrantResponse, error)
 	LeaseRevoke(lc *pb.LeaseRevokeRequest) (*pb.LeaseRevokeResponse, error)
@@ -119,15 +121,15 @@ func (a *applierV3backend) Apply(r *pb.InternalRaftRequest) *applyResult {
 	// call into a.s.applyV3.F instead of a.F so upper appliers can check individual calls
 	switch {
 	case r.Range != nil:
-		ar.resp, ar.err = a.s.applyV3.Range(nil, r.Range)
+		ar.resp, ar.err = a.s.applyV3.Range(context.TODO(), nil, r.Range)
 	case r.Put != nil:
-		ar.resp, ar.err = a.s.applyV3.Put(nil, r.Put)
+		ar.resp, ar.trace, ar.err = a.s.applyV3.Put(nil, r.Put)
 	case r.DeleteRange != nil:
 		ar.resp, ar.err = a.s.applyV3.DeleteRange(nil, r.DeleteRange)
 	case r.Txn != nil:
 		ar.resp, ar.err = a.s.applyV3.Txn(r.Txn)
 	case r.Compaction != nil:
-		ar.resp, ar.physc, ar.err = a.s.applyV3.Compaction(r.Compaction)
+		ar.resp, ar.physc, ar.trace, ar.err = a.s.applyV3.Compaction(r.Compaction)
 	case r.LeaseGrant != nil:
 		ar.resp, ar.err = a.s.applyV3.LeaseGrant(r.LeaseGrant)
 	case r.LeaseRevoke != nil:
@@ -174,32 +176,39 @@ func (a *applierV3backend) Apply(r *pb.InternalRaftRequest) *applyResult {
 	return ar
 }
 
-func (a *applierV3backend) Put(txn mvcc.TxnWrite, p *pb.PutRequest) (resp *pb.PutResponse, err error) {
+func (a *applierV3backend) Put(txn mvcc.TxnWrite, p *pb.PutRequest) (resp *pb.PutResponse, trace *traceutil.Trace, err error) {
 	resp = &pb.PutResponse{}
 	resp.Header = &pb.ResponseHeader{}
-
+	trace = traceutil.New("put",
+		a.s.getLogger(),
+		traceutil.Field{Key: "key", Value: string(p.Key)},
+		traceutil.Field{Key: "req_size", Value: proto.Size(p)},
+	)
 	val, leaseID := p.Value, lease.LeaseID(p.Lease)
 	if txn == nil {
 		if leaseID != lease.NoLease {
 			if l := a.s.lessor.Lookup(leaseID); l == nil {
-				return nil, lease.ErrLeaseNotFound
+				return nil, nil, lease.ErrLeaseNotFound
 			}
 		}
-		txn = a.s.KV().Write()
+		txn = a.s.KV().Write(trace)
 		defer txn.End()
 	}
 
 	var rr *mvcc.RangeResult
 	if p.IgnoreValue || p.IgnoreLease || p.PrevKv {
+		trace.DisableStep()
 		rr, err = txn.Range(p.Key, nil, mvcc.RangeOptions{})
 		if err != nil {
-			return nil, err
+			return nil, nil, err
 		}
+		trace.EnableStep()
+		trace.Step("get previous kv pair")
 	}
 	if p.IgnoreValue || p.IgnoreLease {
 		if rr == nil || len(rr.KVs) == 0 {
 			// ignore_{lease,value} flag expects previous key-value pair
-			return nil, ErrKeyNotFound
+			return nil, nil, ErrKeyNotFound
 		}
 	}
 	if p.IgnoreValue {
@@ -215,7 +224,8 @@ func (a *applierV3backend) Put(txn mvcc.TxnWrite, p *pb.PutRequest) (resp *pb.Pu
 	}
 
 	resp.Header.Revision = txn.Put(p.Key, val, leaseID)
-	return resp, nil
+	trace.AddField(traceutil.Field{Key: "response_revision", Value: resp.Header.Revision})
+	return resp, trace, nil
 }
 
 func (a *applierV3backend) DeleteRange(txn mvcc.TxnWrite, dr *pb.DeleteRangeRequest) (*pb.DeleteRangeResponse, error) {
@@ -224,7 +234,7 @@ func (a *applierV3backend) DeleteRange(txn mvcc.TxnWrite, dr *pb.DeleteRangeRequ
 	end := mkGteRange(dr.RangeEnd)
 
 	if txn == nil {
-		txn = a.s.kv.Write()
+		txn = a.s.kv.Write(traceutil.TODO())
 		defer txn.End()
 	}
 
@@ -245,12 +255,14 @@ func (a *applierV3backend) DeleteRange(txn mvcc.TxnWrite, dr *pb.DeleteRangeRequ
 	return resp, nil
 }
 
-func (a *applierV3backend) Range(txn mvcc.TxnRead, r *pb.RangeRequest) (*pb.RangeResponse, error) {
+func (a *applierV3backend) Range(ctx context.Context, txn mvcc.TxnRead, r *pb.RangeRequest) (*pb.RangeResponse, error) {
+	trace := traceutil.Get(ctx)
+
 	resp := &pb.RangeResponse{}
 	resp.Header = &pb.ResponseHeader{}
 
 	if txn == nil {
-		txn = a.s.kv.Read()
+		txn = a.s.kv.Read(trace)
 		defer txn.End()
 	}
 
@@ -327,7 +339,7 @@ func (a *applierV3backend) Range(txn mvcc.TxnRead, r *pb.RangeRequest) (*pb.Rang
 		rr.KVs = rr.KVs[:r.Limit]
 		resp.More = true
 	}
-
+	trace.Step("filter and sort the key-value pairs")
 	resp.Header.Revision = rr.Rev
 	resp.Count = int64(rr.Count)
 	resp.Kvs = make([]*mvccpb.KeyValue, len(rr.KVs))
@@ -337,12 +349,13 @@ func (a *applierV3backend) Range(txn mvcc.TxnRead, r *pb.RangeRequest) (*pb.Rang
 		}
 		resp.Kvs[i] = &rr.KVs[i]
 	}
+	trace.Step("assemble the response")
 	return resp, nil
 }
 
 func (a *applierV3backend) Txn(rt *pb.TxnRequest) (*pb.TxnResponse, error) {
 	isWrite := !isTxnReadonly(rt)
-	txn := mvcc.NewReadOnlyTxnWrite(a.s.KV().Read())
+	txn := mvcc.NewReadOnlyTxnWrite(a.s.KV().Read(traceutil.TODO()))
 
 	txnPath := compareToPath(txn, rt)
 	if isWrite {
@@ -364,7 +377,7 @@ func (a *applierV3backend) Txn(rt *pb.TxnRequest) (*pb.TxnResponse, error) {
 	// be the revision of the write txn.
 	if isWrite {
 		txn.End()
-		txn = a.s.KV().Write()
+		txn = a.s.KV().Write(traceutil.TODO())
 	}
 	a.applyTxn(txn, rt, txnPath, txnResp)
 	rev := txn.Rev()
@@ -516,7 +529,7 @@ func (a *applierV3backend) applyTxn(txn mvcc.TxnWrite, rt *pb.TxnRequest, txnPat
 		respi := tresp.Responses[i].Response
 		switch tv := req.Request.(type) {
 		case *pb.RequestOp_RequestRange:
-			resp, err := a.Range(txn, tv.RequestRange)
+			resp, err := a.Range(context.TODO(), txn, tv.RequestRange)
 			if err != nil {
 				if lg != nil {
 					lg.Panic("unexpected error during txn", zap.Error(err))
@@ -526,7 +539,7 @@ func (a *applierV3backend) applyTxn(txn mvcc.TxnWrite, rt *pb.TxnRequest, txnPat
 			}
 			respi.(*pb.ResponseOp_ResponseRange).ResponseRange = resp
 		case *pb.RequestOp_RequestPut:
-			resp, err := a.Put(txn, tv.RequestPut)
+			resp, _, err := a.Put(txn, tv.RequestPut)
 			if err != nil {
 				if lg != nil {
 					lg.Panic("unexpected error during txn", zap.Error(err))
@@ -557,17 +570,22 @@ func (a *applierV3backend) applyTxn(txn mvcc.TxnWrite, rt *pb.TxnRequest, txnPat
 	return txns
 }
 
-func (a *applierV3backend) Compaction(compaction *pb.CompactionRequest) (*pb.CompactionResponse, <-chan struct{}, error) {
+func (a *applierV3backend) Compaction(compaction *pb.CompactionRequest) (*pb.CompactionResponse, <-chan struct{}, *traceutil.Trace, error) {
 	resp := &pb.CompactionResponse{}
 	resp.Header = &pb.ResponseHeader{}
-	ch, err := a.s.KV().Compact(compaction.Revision)
+	trace := traceutil.New("compact",
+		a.s.getLogger(),
+		traceutil.Field{Key: "revision", Value: compaction.Revision},
+	)
+
+	ch, err := a.s.KV().Compact(trace, compaction.Revision)
 	if err != nil {
-		return nil, ch, err
+		return nil, ch, nil, err
 	}
 	// get the current revision. which key to get is not important.
 	rr, _ := a.s.KV().Range([]byte("compaction"), nil, mvcc.RangeOptions{})
 	resp.Header.Revision = rr.Rev
-	return resp, ch, err
+	return resp, ch, trace, err
 }
 
 func (a *applierV3backend) LeaseGrant(lc *pb.LeaseGrantRequest) (*pb.LeaseGrantResponse, error) {
@@ -674,8 +692,8 @@ type applierV3Capped struct {
 // with Puts so that the number of keys in the store is capped.
 func newApplierV3Capped(base applierV3) applierV3 { return &applierV3Capped{applierV3: base} }
 
-func (a *applierV3Capped) Put(txn mvcc.TxnWrite, p *pb.PutRequest) (*pb.PutResponse, error) {
+func (a *applierV3Capped) Put(txn mvcc.TxnWrite, p *pb.PutRequest) (*pb.PutResponse, *traceutil.Trace, error) {
-	return nil, ErrNoSpace
+	return nil, nil, ErrNoSpace
 }
 
 func (a *applierV3Capped) Txn(r *pb.TxnRequest) (*pb.TxnResponse, error) {
@@ -824,13 +842,13 @@ func newQuotaApplierV3(s *EtcdServer, app applierV3) applierV3 {
 	return &quotaApplierV3{app, NewBackendQuota(s, "v3-applier")}
 }
 
-func (a *quotaApplierV3) Put(txn mvcc.TxnWrite, p *pb.PutRequest) (*pb.PutResponse, error) {
+func (a *quotaApplierV3) Put(txn mvcc.TxnWrite, p *pb.PutRequest) (*pb.PutResponse, *traceutil.Trace, error) {
 	ok := a.q.Available(p)
-	resp, err := a.applierV3.Put(txn, p)
+	resp, trace, err := a.applierV3.Put(txn, p)
 	if err == nil && !ok {
 		err = ErrNoSpace
 	}
-	return resp, err
+	return resp, trace, err
 }
 
 func (a *quotaApplierV3) Txn(rt *pb.TxnRequest) (*pb.TxnResponse, error) {

etcdserver/apply_auth.go

@@ -15,12 +15,14 @@
 package etcdserver
 
 import (
+	"context"
 	"sync"
 
 	"go.etcd.io/etcd/auth"
 	pb "go.etcd.io/etcd/etcdserver/etcdserverpb"
 	"go.etcd.io/etcd/lease"
 	"go.etcd.io/etcd/mvcc"
+	"go.etcd.io/etcd/pkg/traceutil"
 )
 
 type authApplierV3 struct {
@@ -61,9 +63,9 @@ func (aa *authApplierV3) Apply(r *pb.InternalRaftRequest) *applyResult {
 	return ret
 }
 
-func (aa *authApplierV3) Put(txn mvcc.TxnWrite, r *pb.PutRequest) (*pb.PutResponse, error) {
+func (aa *authApplierV3) Put(txn mvcc.TxnWrite, r *pb.PutRequest) (*pb.PutResponse, *traceutil.Trace, error) {
 	if err := aa.as.IsPutPermitted(&aa.authInfo, r.Key); err != nil {
-		return nil, err
+		return nil, nil, err
 	}
 
 	if err := aa.checkLeasePuts(lease.LeaseID(r.Lease)); err != nil {
@@ -71,23 +73,23 @@ func (aa *authApplierV3) Put(txn mvcc.TxnWrite, r *pb.PutRequest) (*pb.PutRespon
 		// be written by this user. It means the user cannot revoke the
 		// lease so attaching the lease to the newly written key should
 		// be forbidden.
-		return nil, err
+		return nil, nil, err
 	}
 
 	if r.PrevKv {
 		err := aa.as.IsRangePermitted(&aa.authInfo, r.Key, nil)
 		if err != nil {
-			return nil, err
+			return nil, nil, err
 		}
 	}
 	return aa.applierV3.Put(txn, r)
 }
 
-func (aa *authApplierV3) Range(txn mvcc.TxnRead, r *pb.RangeRequest) (*pb.RangeResponse, error) {
+func (aa *authApplierV3) Range(ctx context.Context, txn mvcc.TxnRead, r *pb.RangeRequest) (*pb.RangeResponse, error) {
 	if err := aa.as.IsRangePermitted(&aa.authInfo, r.Key, r.RangeEnd); err != nil {
 		return nil, err
 	}
-	return aa.applierV3.Range(txn, r)
+	return aa.applierV3.Range(ctx, txn, r)
 }
 
 func (aa *authApplierV3) DeleteRange(txn mvcc.TxnWrite, r *pb.DeleteRangeRequest) (*pb.DeleteRangeResponse, error) {

etcdserver/corrupt.go

@@ -23,6 +23,7 @@ import (
 	"go.etcd.io/etcd/etcdserver/api/v3rpc/rpctypes"
 	pb "go.etcd.io/etcd/etcdserver/etcdserverpb"
 	"go.etcd.io/etcd/mvcc"
+	"go.etcd.io/etcd/pkg/traceutil"
 	"go.etcd.io/etcd/pkg/types"
 
 	"go.uber.org/zap"
@@ -382,11 +383,11 @@ type applierV3Corrupt struct {
 
 func newApplierV3Corrupt(a applierV3) *applierV3Corrupt { return &applierV3Corrupt{a} }
 
-func (a *applierV3Corrupt) Put(txn mvcc.TxnWrite, p *pb.PutRequest) (*pb.PutResponse, error) {
+func (a *applierV3Corrupt) Put(txn mvcc.TxnWrite, p *pb.PutRequest) (*pb.PutResponse, *traceutil.Trace, error) {
-	return nil, ErrCorrupt
+	return nil, nil, ErrCorrupt
 }
 
-func (a *applierV3Corrupt) Range(txn mvcc.TxnRead, p *pb.RangeRequest) (*pb.RangeResponse, error) {
+func (a *applierV3Corrupt) Range(ctx context.Context, txn mvcc.TxnRead, p *pb.RangeRequest) (*pb.RangeResponse, error) {
 	return nil, ErrCorrupt
 }
 
@@ -398,8 +399,8 @@ func (a *applierV3Corrupt) Txn(rt *pb.TxnRequest) (*pb.TxnResponse, error) {
 	return nil, ErrCorrupt
 }
 
-func (a *applierV3Corrupt) Compaction(compaction *pb.CompactionRequest) (*pb.CompactionResponse, <-chan struct{}, error) {
+func (a *applierV3Corrupt) Compaction(compaction *pb.CompactionRequest) (*pb.CompactionResponse, <-chan struct{}, *traceutil.Trace, error) {
-	return nil, nil, ErrCorrupt
+	return nil, nil, nil, ErrCorrupt
 }
 
 func (a *applierV3Corrupt) LeaseGrant(lc *pb.LeaseGrantRequest) (*pb.LeaseGrantResponse, error) {

etcdserver/metrics.go

@@ -207,7 +207,7 @@ func monitorFileDescriptor(lg *zap.Logger, done <-chan struct{}) {
 		}
 		if used >= limit/5*4 {
 			if lg != nil {
-				lg.Warn("80%% of file descriptors are used", zap.Uint64("used", used), zap.Uint64("limit", limit))
+				lg.Warn("80% of file descriptors are used", zap.Uint64("used", used), zap.Uint64("limit", limit))
 			} else {
 				plog.Warningf("80%% of the file descriptor limit is used [used = %d, limit = %d]", used, limit)
 			}

etcdserver/server.go

@@ -50,6 +50,7 @@ import (
 	"go.etcd.io/etcd/pkg/pbutil"
 	"go.etcd.io/etcd/pkg/runtime"
 	"go.etcd.io/etcd/pkg/schedule"
+	"go.etcd.io/etcd/pkg/traceutil"
 	"go.etcd.io/etcd/pkg/types"
 	"go.etcd.io/etcd/pkg/wait"
 	"go.etcd.io/etcd/raft"
@@ -785,7 +786,7 @@ func (s *EtcdServer) start() {
 		} else {
 			plog.Infof("starting server... [version: %v, cluster version: %v]", version.Version, version.Cluster(s.ClusterVersion().String()))
 		}
-		membership.ClusterVersionMetrics.With(prometheus.Labels{"cluster_version": s.ClusterVersion().String()}).Set(1)
+		membership.ClusterVersionMetrics.With(prometheus.Labels{"cluster_version": version.Cluster(s.ClusterVersion().String())}).Set(1)
 	} else {
 		if lg != nil {
 			lg.Info(
@@ -1178,7 +1179,7 @@ func (s *EtcdServer) applySnapshot(ep *etcdProgress, apply *apply) {
 			plog.Info("recovering lessor...")
 		}
 
-		s.lessor.Recover(newbe, func() lease.TxnDelete { return s.kv.Write() })
+		s.lessor.Recover(newbe, func() lease.TxnDelete { return s.kv.Write(traceutil.TODO()) })
 
 		if lg != nil {
 			lg.Info("restored lease store")

etcdserver/v3_server.go

@@ -26,6 +26,7 @@ import (
 	"go.etcd.io/etcd/lease"
 	"go.etcd.io/etcd/lease/leasehttp"
 	"go.etcd.io/etcd/mvcc"
+	"go.etcd.io/etcd/pkg/traceutil"
 	"go.etcd.io/etcd/raft"
 
 	"github.com/gogo/protobuf/proto"
@@ -38,6 +39,7 @@ const (
 	// However, if the committed entries are very heavy to apply, the gap might grow.
 	// We should stop accepting new proposals if the gap growing to a certain point.
 	maxGapBetweenApplyAndCommitIndex = 5000
+	traceThreshold                   = 100 * time.Millisecond
 )
 
 type RaftKV interface {
@@ -85,14 +87,29 @@ type Authenticator interface {
 }
 
 func (s *EtcdServer) Range(ctx context.Context, r *pb.RangeRequest) (*pb.RangeResponse, error) {
+	trace := traceutil.New("range",
+		s.getLogger(),
+		traceutil.Field{Key: "range_begin", Value: string(r.Key)},
+		traceutil.Field{Key: "range_end", Value: string(r.RangeEnd)},
+	)
+	ctx = context.WithValue(ctx, traceutil.TraceKey, trace)
+
 	var resp *pb.RangeResponse
 	var err error
 	defer func(start time.Time) {
 		warnOfExpensiveReadOnlyRangeRequest(s.getLogger(), start, r, resp, err)
+		if resp != nil {
+			trace.AddField(
+				traceutil.Field{Key: "response_count", Value: len(resp.Kvs)},
+				traceutil.Field{Key: "response_revision", Value: resp.Header.Revision},
+			)
+		}
+		trace.LogIfLong(traceThreshold)
 	}(time.Now())
 
 	if !r.Serializable {
 		err = s.linearizableReadNotify(ctx)
+		trace.Step("agreement among raft nodes before linearized reading")
 		if err != nil {
 			return nil, err
 		}
@@ -101,7 +118,7 @@ func (s *EtcdServer) Range(ctx context.Context, r *pb.RangeRequest) (*pb.RangeRe
 		return s.authStore.IsRangePermitted(ai, r.Key, r.RangeEnd)
 	}
 
-	get := func() { resp, err = s.applyV3Base.Range(nil, r) }
+	get := func() { resp, err = s.applyV3Base.Range(ctx, nil, r) }
 	if serr := s.doSerialize(ctx, chk, get); serr != nil {
 		err = serr
 		return nil, err
@@ -110,6 +127,7 @@ func (s *EtcdServer) Range(ctx context.Context, r *pb.RangeRequest) (*pb.RangeRe
 }
 
 func (s *EtcdServer) Put(ctx context.Context, r *pb.PutRequest) (*pb.PutResponse, error) {
+	ctx = context.WithValue(ctx, traceutil.StartTimeKey, time.Now())
 	resp, err := s.raftRequest(ctx, pb.InternalRaftRequest{Put: r})
 	if err != nil {
 		return nil, err
@@ -186,7 +204,18 @@ func isTxnReadonly(r *pb.TxnRequest) bool {
 }
 
 func (s *EtcdServer) Compact(ctx context.Context, r *pb.CompactionRequest) (*pb.CompactionResponse, error) {
+	startTime := time.Now()
 	result, err := s.processInternalRaftRequestOnce(ctx, pb.InternalRaftRequest{Compaction: r})
+	trace := traceutil.TODO()
+	if result != nil && result.trace != nil {
+		trace = result.trace
+		defer func() {
+			trace.LogIfLong(traceThreshold)
+		}()
+		applyStart := result.trace.GetStartTime()
+		result.trace.SetStartTime(startTime)
+		trace.InsertStep(0, applyStart, "process raft request")
+	}
 	if r.Physical && result != nil && result.physc != nil {
 		<-result.physc
 		// The compaction is done deleting keys; the hash is now settled
@@ -195,6 +224,7 @@ func (s *EtcdServer) Compact(ctx context.Context, r *pb.CompactionRequest) (*pb.
 		// if the compaction resumes. Force the finished compaction to
 		// commit so it won't resume following a crash.
 		s.be.ForceCommit()
+		trace.Step("physically apply compaction")
 	}
 	if err != nil {
 		return nil, err
@@ -210,6 +240,7 @@ func (s *EtcdServer) Compact(ctx context.Context, r *pb.CompactionRequest) (*pb.
 		resp.Header = &pb.ResponseHeader{}
 	}
 	resp.Header.Revision = s.kv.Rev()
+	trace.AddField(traceutil.Field{Key: "response_revision", Value: resp.Header.Revision})
 	return resp, nil
 }
 
@@ -533,6 +564,15 @@ func (s *EtcdServer) raftRequestOnce(ctx context.Context, r pb.InternalRaftReque
 	if result.err != nil {
 		return nil, result.err
 	}
+	if startTime, ok := ctx.Value(traceutil.StartTimeKey).(time.Time); ok && result.trace != nil {
+		applyStart := result.trace.GetStartTime()
+		// The trace object is created in apply. Here reset the start time to trace
+		// the raft request time by the difference between the request start time
+		// and apply start time
+		result.trace.SetStartTime(startTime)
+		result.trace.InsertStep(0, applyStart, "process raft request")
+		result.trace.LogIfLong(traceThreshold)
+	}
 	return result.resp, nil
 }
 
@@ -547,6 +587,7 @@ func (s *EtcdServer) raftRequest(ctx context.Context, r pb.InternalRaftRequest)
 
 // doSerialize handles the auth logic, with permissions checked by "chk", for a serialized request "get". Returns a non-nil error on authentication failure.
 func (s *EtcdServer) doSerialize(ctx context.Context, chk func(*auth.AuthInfo) error, get func()) error {
+	trace := traceutil.Get(ctx)
 	ai, err := s.AuthInfoFromCtx(ctx)
 	if err != nil {
 		return err
@@ -558,6 +599,7 @@ func (s *EtcdServer) doSerialize(ctx context.Context, chk func(*auth.AuthInfo) e
 	if err = chk(ai); err != nil {
 		return err
 	}
+	trace.Step("get authentication metadata")
 	// fetch response for serialized request
 	get()
 	// check for stale token revision in case the auth store was updated while

functional/scripts/docker-local-agent.sh

@@ -13,7 +13,7 @@ if ! [[ "${0}" =~ "scripts/docker-local-agent.sh" ]]; then
 fi
 
 if [[ -z "${GO_VERSION}" ]]; then
-  GO_VERSION=1.12.9
+  GO_VERSION=1.12.12
 fi
 echo "Running with GO_VERSION:" ${GO_VERSION}
 

functional/scripts/docker-local-tester.sh

@@ -6,7 +6,7 @@ if ! [[ "${0}" =~ "scripts/docker-local-tester.sh" ]]; then
 fi
 
 if [[ -z "${GO_VERSION}" ]]; then
-  GO_VERSION=1.12.9
+  GO_VERSION=1.12.12
 fi
 echo "Running with GO_VERSION:" ${GO_VERSION}
 

go.mod

@@ -43,7 +43,7 @@ require (
 	golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7
 	golang.org/x/sys v0.0.0-20190826190057-c7b8b68b1456 // indirect
 	golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2
-	google.golang.org/grpc v1.23.0
+	google.golang.org/grpc v1.23.1
 	gopkg.in/cheggaaa/pb.v1 v1.0.25
 	gopkg.in/yaml.v2 v2.2.2
 	sigs.k8s.io/yaml v1.1.0

go.sum

@@ -181,8 +181,8 @@ google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9Ywl
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8 h1:Nw54tB0rB7hY/N0NQvRW8DG4Yk3Q6T9cu9RcFQDu1tc=
 google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.23.0 h1:AzbTB6ux+okLTzP8Ru1Xs41C303zdcfEht7MQnYJt5A=
+google.golang.org/grpc v1.23.1 h1:q4XQuHFC6I28BKZpo6IYyb3mNO+l7lSOxRuYTCiDfXk=
-google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
+google.golang.org/grpc v1.23.1/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

integration/fixtures/ca.crt

@@ -1,22 +1,22 @@
 -----BEGIN CERTIFICATE-----
-MIIDrjCCApagAwIBAgIUM24Z44NdsHtDQisQRIH+mmhXLHYwDQYJKoZIhvcNAQEL
+MIIDrjCCApagAwIBAgIUOl7DCgSvqQKhiihYrZDiBKNpQX4wDQYJKoZIhvcNAQEL
 BQAwbzEMMAoGA1UEBhMDVVNBMRMwEQYDVQQIEwpDYWxpZm9ybmlhMRYwFAYDVQQH
 Ew1TYW4gRnJhbmNpc2NvMQ0wCwYDVQQKEwRldGNkMRYwFAYDVQQLEw1ldGNkIFNl
-Y3VyaXR5MQswCQYDVQQDEwJjYTAeFw0xOTAxMjExNDQwMDBaFw0yOTAxMTgxNDQw
+Y3VyaXR5MQswCQYDVQQDEwJjYTAeFw0xOTEwMDgyMTE5MDBaFw0yOTEwMDUyMTE5
 MDBaMG8xDDAKBgNVBAYTA1VTQTETMBEGA1UECBMKQ2FsaWZvcm5pYTEWMBQGA1UE
 BxMNU2FuIEZyYW5jaXNjbzENMAsGA1UEChMEZXRjZDEWMBQGA1UECxMNZXRjZCBT
 ZWN1cml0eTELMAkGA1UEAxMCY2EwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK
-AoIBAQCsWG1qafiCwfmKEltvpmslNqOlWgMp9H7VIP7cExbhsW4P1L4Jlfcz7rFH
+AoIBAQDBNhwKD8oqOwNSDMZR+K6l6ocyXZzZPAIbv7co34xtjt25c8PPKz8FiBSU
-2MFpwktbxppoYI/4umTj5r7dx/K6mttUBtiLY5VwSCo/asZvLaOLFN2QP4cwkpLI
+M4YeZpzsSp7n7WSSSzVWqFTRBZzvjIrBzLu4CfxMKuUrQX1/BPYgbSxQO+5YKPzO
-lFDy4Pez2Uu+NnmMF6SLq+M6mOaHSbURNvphP1zWX9SLKo1OV8GT6r/oHYmcR+xy
+yaBMhIAEtW+WYsaa6PpWyL65L4giKpVoLS/UFTEBsf+lO6pwFpX2EJnIylLbpwEd
-skWd/+6B73S0pbG/d3ME/WoovZtOXqaZtJn8YIBXE6LGd4NBkSK3Jg9c4QzlErTM
+pAXIgVFsodHlP9Zc2tR1TqYetmJ6/A/p5sSZpgLy1y2+Mg4VTMKvs2kNAoh/+lEu
-j6ItTs7t9aPjXd2kiq8IY6UN2TrLwssWkGM4Oop+mlp5zcKIDLhDrfsRga5hxx2Z
+WPe204eMpkBXhukulOiJkVKNdhnCkLslt8ZaMWWqBvD9d94lXycMQ9wnGakPNc4W
-i0coNWBKNjvVaCO0L7Qn1nIHA1KtAgMBAAGjQjBAMA4GA1UdDwEB/wQEAwIBBjAP
+5VX3rbLOGOX7xK37BCsh5HGodIrZAgMBAAGjQjBAMA4GA1UdDwEB/wQEAwIBBjAP
-BgNVHRMBAf8EBTADAQH/MB0GA1UdDgQWBBTdZTAnocY85lHhyR/A7lJkp3t2mjAN
+BgNVHRMBAf8EBTADAQH/MB0GA1UdDgQWBBRlB76vjaZyFLrEUGm6DQfyjmN6PjAN
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+GFxeuE/U8K6kIixT8qCAh6Naq9/xuxFkffLmMKfZXoYLCg==
 -----END CERTIFICATE-----

integration/fixtures/gencerts.sh

@@ -43,6 +43,15 @@ cfssl gencert \
 mv server-ip.pem server-ip.crt
 mv server-ip-key.pem server-ip.key.insecure
 
+# generate IPv6: [::1], CN: example.com certificates
+cfssl gencert \
+  --ca ./ca.crt \
+  --ca-key ./ca-key.pem \
+  --config ./gencert.json \
+  ./server-ca-csr-ipv6.json | cfssljson --bare ./server-ip
+mv server-ip.pem server-ipv6.crt
+mv server-ip-key.pem server-ipv6.key.insecure
+
 # generate DNS: localhost, IP: 127.0.0.1, CN: example2.com certificates
 cfssl gencert \
   --ca ./ca.crt \

integration/fixtures/server-ca-csr-ipv6.json

@@ -0,0 +1,19 @@
+{
+  "key": {
+    "algo": "rsa",
+    "size": 2048
+  },
+  "names": [
+    {
+      "O": "etcd",
+      "OU": "etcd Security",
+      "L": "San Francisco",
+      "ST": "California",
+      "C": "USA"
+    }
+  ],
+  "CN": "example.com",
+  "hosts": [
+    "::1"
+  ]
+}

integration/fixtures/server-ecdsa.crt

@@ -1,20 +1,20 @@
 -----BEGIN CERTIFICATE-----
-MIIDRzCCAi+gAwIBAgIUMEJ5c+Tt0TyOcLL+dIUuE2nOuukwDQYJKoZIhvcNAQEL
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+yYW3/b1jcmZk8W9GXqcXy16LbWmpvJmTHPsj
 -----END CERTIFICATE-----

integration/fixtures/server-ecdsa.key.insecure

@@ -1,5 +1,5 @@
 -----BEGIN EC PRIVATE KEY-----
-MHcCAQEEINToOjKwxXFyCQHkiWoL55IPdPoYhm1TFmDylAUIhJWZoAoGCCqGSM49
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-9ftzOx4k+eqeaJsAz6nvMxbArz0puk0hDw==
+s4k7wpILCHLIn5lCBEHCOL9ym5I96jBdbA==
 -----END EC PRIVATE KEY-----

integration/fixtures/server-ip.crt

@@ -1,24 +1,24 @@
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----

integration/fixtures/server-ip.key.insecure

@@ -1,27 +1,27 @@
 -----BEGIN RSA PRIVATE KEY-----
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 -----END RSA PRIVATE KEY-----

integration/fixtures/server-ipv6.crt

@@ -0,0 +1,24 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----

integration/fixtures/server-ipv6.key.insecure

@@ -0,0 +1,27 @@
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----

integration/fixtures/server-revoked.crt

@@ -1,24 +1,24 @@
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----

integration/fixtures/server-revoked.key.insecure

@@ -1,27 +1,27 @@
 -----BEGIN RSA PRIVATE KEY-----
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 -----END RSA PRIVATE KEY-----

integration/fixtures/server-wildcard.crt

@@ -1,25 +1,25 @@
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----

integration/fixtures/server-wildcard.key.insecure

@@ -1,27 +1,27 @@
 -----BEGIN RSA PRIVATE KEY-----
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 -----END RSA PRIVATE KEY-----

integration/fixtures/server.crt

@@ -1,24 +1,24 @@
 -----BEGIN CERTIFICATE-----
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 -----END CERTIFICATE-----

integration/fixtures/server.key.insecure

@@ -1,27 +1,27 @@
 -----BEGIN RSA PRIVATE KEY-----
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 -----END RSA PRIVATE KEY-----

integration/fixtures/server2.crt

@@ -1,24 +1,24 @@
 -----BEGIN CERTIFICATE-----
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-AAABMA0GCSqGSIb3DQEBCwUAA4IBAQCcn0Y/zym6tla+ku/sMiAMrvB1NZNVd1eE
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-kdZ6ixHynY90Q5PX48BlgZvzd884RZFDjwSCoGkbdYqTtD9FfuGS/fdYcHZJvVAJ
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-1oRXH0D0e3I1piUAzfFkLTXqgmBHh1zgNHqq3CVcjA/4CVGn2foI5r7yH9TIO+Dt
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-hegJjObxJQJjobDJ5ijXbkPLt+LC7OFEDGbn8IKBIMmLYXULGIJR8wLKpiaBLV6G
+VVuUu19/ALvdv2kOC+ayhH+vTAvEA38P6wlavDlgsv/M902ORWahdLQ/H0XX+gVP
-zoME6J9TZe2g2VQYcPxwshesIx8MAcqNVjOBI6pBey5t5Lqhbj4Z
+QDe3MyrBR6QkjAfKJvnMv/5x8mj+AFWfnALnRb9j3/q1UOwITWN2
 -----END CERTIFICATE-----

integration/fixtures/server2.key.insecure

@@ -1,27 +1,27 @@
 -----BEGIN RSA PRIVATE KEY-----
-MIIEogIBAAKCAQEA3Jo8Uwuzyj5BU4Rx6eBA0bkIccRgruUWpZDQ1e0fO9AuWgYc
+MIIEpAIBAAKCAQEAv6FwE/OeAwAmZutb+DTP+y7FKpONm0+aHtESlrmTRmDoiLGu
-RSE5O/EiJW6MpHKhlT3jhBw9bmzDrcAF+Hre/1hCfRPP3udDerYAEbpHEQ4ay1c/
+oEXjYcFOCHr6gQJTYKEAivBK3TIN0dRirNBqLQxssDlsbU4ZXG++OciH/OoR8E+V
-FlsRqaOPWS3b+Yp+RQCvyDQGiJ7TPifm0vU4opeeM+MUFmnFOdDxS0FxJOWDJCdC
+mMsbqof/E0nhVFYDumnuoS+waX8elzuDjDX4u7F+d1/gIb8aYU1VDjtZxF2bvqaP
-ckr4Srghn56srwQPJISzS0q73YT5hv1lgg4yr3PHtEzBYvzw2yRxY8nEE6ZM8hGn
+yroOn5HvBs4MW+BpAB4guHfDXpK/oAnJDsq9JTUZqoG1xOZfHNhA/iVBSAJvhO6a
-OwjDn9FNRMPr13wd05w94hq8akDHqvRp4yHKXfsw11fW7jUj+1D2GsHL4VVTmafx
+BxDCjzwO1gT5kTbNELrBCJ0V2NXlHFcBOPhxyl4+DIPwa0Q8oExUEOzxnHFuU3GP
-+RJsHy33/Lou5eJ5HIOeYsjX3PDs2KS7MlZX8wIDAQABAoIBAAurkSNnjBRX5MbR
+oklbLp0RNNiqHHKfD4yaLI1rf8dH5AZG/QjK4wIDAQABAoIBAE5QTHxq4BV71zXS
-S+Fufp9ZpYu3MtItxlvt5E5c4/kbE0ip6Bb0If38zKykQ4Zzlf66Lm4PvGQ6FsP7
+U7ig5KpTV9JpkMJ7CpIzgTRFzNFDQ2SxsJrhVOabWCeREpTsfWSNB6rAPugcz5cE
-U5WIkoF5ntLVGHsXSueT9z741sedMmetbuX03WNXBr9WALwbyoBGAAacUfgqRsyT
+A/t6BRo57KUsIoqdEzI6nHQC5shOZFxgOdPClaDgiTa5x7Nun4FsT1BiK+dBQyAs
-+c8RL/TSBomCKs7gu5FKb2lmxeCItpeyxGPp35AnXR1B5Q9GK7IoFnYlpJO5Vqbs
++zqux+L0y6k/blp8Peyr7OmvCaV8osB4/JLLH/WHt2wWgqFWisyIT7/D/gQlQn81
-t1cpOikotKTFrylq6hxGbRBtzBnrOLh51UneXR0r83oGzSrpHm5+BLMG5orYnK10
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-UKBge1HijLjG9EDpCLdR+T/IJyz3oQyFCPRVFrIq5/76C8LsMSSjKdM6apCMc9d7
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-NMnHPYkCgYEA6AWosramFnuAjihEkaBgJdpFRHfco+FlpglcS5cvaORmkW7dLl6R
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-SZaO/mRJuhtC3j+LBXdGaP6rMdW7it9wRXs160e5mfSrEb7H66bgD0FfIG+iaEPV
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-8OXESgrSUI69neddRgL2QXZeY++hSzaMNGef2lPpFd+irgkud+bltSUCgYEA82Z1
+01IrfMIK2mkXDZwzkAxPaOnny2OMZtUznmZnNdJ/vLd7U0sScNPVQp8CgYEA5krD
-/VVubW/lcnz2jBehssXL5yqNa/ySVvEWHdcKG6b0RNsoQCmOUZnBIwqDLMT4+62v
+ImQ8U9/S4VOK78i3FMWMoutffXpW71lEc9tsz1YWUPf170raujjF5mqtBBXup9ko
-e3bYNi/y44oJi741ifT6prPPQqv+J3tsEAQ0dlcscs71q4TXJEpLIoSlM+lQAsYA
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-IhOkeLA5YKr2RzjnD9m2d+awErK6GGtCQqGbqTcCgYBHzgiJVlFMP+hnFjsyPknD
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-LSumptmXthe5LMhtdFptwdGkTIUS5p1cAsY6IFtYxzsIgO3LQUB/GeFtSNIDhma+
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-egUTzVy5MqkGkt5YJYrN7dM8vI+saOH67YCz0WmJGMPB7GpHUn9XfwRzNSPbnQQC
+eDhaVXuuxJfFINIiBwpKGA7Ed27Smr6EbI7bu1W1h+oozjppdW9GfscmXDVhhMir
-69biwHkwFcfIyHqjDMgmKQKBgFWsTwOouoHSzRSLX8zX1Ja0gJ0RoU3NTUVE/t/p
+3PYG54H298hM8/eAKzsps80CgYEAzk5Vp76ySNVv3spv4kYmtaYQSnef8RIjRYLs
-/SjWj0xdR8Gt3uZiFFVdMebkPi94ZzgyENCh+ACXadzCSt4QWNmsmNuC5qbHDrZk
+DvqY7NmLXnf0y618a22m5LfWTZ20Uov50QM40ILe6Ir1GjeS8jw1frc8yljsiFIo
-hILTFFYk+twwmfmwHNo9jljDWuJfB1T3TQEeJlQcWSugn9Q4cb2qeXdbaZ2Gw3/o
+brRj1We4ivcA9vmD3mwMBZbF9RcZJAlmuj4SsOHsY9F+mxjEoDVZpP7duvbv9dIM
-mn3pAoGAbrBBySSjr8AnCmW5ipJ+ys1f8Q5Sg3Skvvx72KNH640AFY9c94glumjZ
+yBlgw2UCgYB27Zwd3ta3x9mx2wRHaFMlcnwh+ERRGO6yAKndsr3L80Gkb2HxHlR3
-7Ryz1BcVIVszaJt9q21xQZeCpQs6VBHQB04AKlJLq/wOccg2Qb4qD8++zNyK5Ndm
+cA3dIg/YAGocjROOIO8MO5rclZm30qM5rlv0SH6gQ4nW16PZgHSuakgeX5fVHb4v
-Bht4nGrX+sGDD4EwLKUCTNgxBgQju6ZQrT3b05xlTsRG0fA7SQQ=
+nT8TKt0PY9r5e5cdHzpwlrDD1Q8GiAHvn0oH6oioGxlIV190YAHvGQ==
 -----END RSA PRIVATE KEY-----

integration/fixtures/server3.crt

@@ -1,24 +1,24 @@
 -----BEGIN CERTIFICATE-----
-MIID/DCCAuSgAwIBAgIUXO0yz2xs67pa/mT7ro2mx5d9+8gwDQYJKoZIhvcNAQEL
+MIID/DCCAuSgAwIBAgIUMgfWSv3FrD0dRcHmPNxLr7p9BXcwDQYJKoZIhvcNAQEL
 BQAwbzEMMAoGA1UEBhMDVVNBMRMwEQYDVQQIEwpDYWxpZm9ybmlhMRYwFAYDVQQH
 Ew1TYW4gRnJhbmNpc2NvMQ0wCwYDVQQKEwRldGNkMRYwFAYDVQQLEw1ldGNkIFNl
-Y3VyaXR5MQswCQYDVQQDEwJjYTAeFw0xOTAxMjExNDQwMDBaFw0yOTAxMTgxNDQw
+Y3VyaXR5MQswCQYDVQQDEwJjYTAeFw0xOTEwMDgyMTE5MDBaFw0yOTEwMDUyMTE5
 MDBaMGIxDDAKBgNVBAYTA1VTQTETMBEGA1UECBMKQ2FsaWZvcm5pYTEWMBQGA1UE
 BxMNU2FuIEZyYW5jaXNjbzENMAsGA1UEChMEZXRjZDEWMBQGA1UECxMNZXRjZCBT
-ZWN1cml0eTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALf9KzBo3JFZ
+ZWN1cml0eTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBALKKf9zhwcgu
-1Zi8lH4t6MSCx/de1MyHSR4S0sD+rl/GcdkdPLOLGKikHZLMU5Z9u1y5HK23QWBy
+S53Vd92PLqHtDNpTbl4nM/5qYy7nHV5FHW7uolQHFA0BjJwxz7/LC39G950PpSIs
-KcdLFDkQckoUBDxAR+sxdVX5RgVTkMR9zdv/4HVertakKNutrno0lUdqhCtV05YR
+K7Y99P7aMPVqVH5FGL+uoDbHMzt/gIUGgWj51J38+x6zN/9vIvAVIBClBhzEuB2k
-HeU8/tPMciyE4cBbeSLlvxGe49xW2cl0iZ4Fqu9xhCS1hlSLDNNN1Azw1hwptGkP
+WJU6KyB1V5G+1wnnKRXLB9QC0f/7vqd9f21O7sJmWeVhGJuEUwwAp1p5WDGM2Tn8
-3voTVWPzU95EXhqtnDhf7QO4QpcIZ44Zm0pWMoyip9TE16bTwjltiAdOs2shK+9h
+Fjy57O9f1nT4WVqWhB5EbvYGDF2Z5DWyKz90EWOwVw30ThcQHF57X6WJdlNiQOrY
-oQ9b2OW69cWpvtwnWsWAACveQHFUZ7drIDc7cv3OPvo7aonx4CHKqxEqnmlIxipP
+KIWO475QKPwbUSpRkvw1jwvllU8s4l6pB1hKTAcUK3UsWrzpf2+m8v8ou35uFD/c
-t8nkKtyHr10CAwEAAaOBnDCBmTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI
+pd2bBx5MVlkCAwEAAaOBnDCBmTAOBgNVHQ8BAf8EBAMCBaAwHQYDVR0lBBYwFAYI
-KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFPc/GrBA
+KwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0OBBYEFAcMdmvX
-B2mcJnSACyKgkNt5GWvrMB8GA1UdIwQYMBaAFN1lMCehxjzmUeHJH8DuUmSne3aa
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 MBoGA1UdEQQTMBGCCWxvY2FsaG9zdIcEfwAAATANBgkqhkiG9w0BAQsFAAOCAQEA
-F30eIP+5u2gZItB9VpohOFjKoW2Ts+TIGT+nE2/b70kpX1JXuOHvJSFgYxn1N9KK
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-tJ03T52ENwhFw7ES9sYmpAKjt/Z+2W1DnY1n29fWvGYKReOt3TjjPQcC26v9l+Kf
+D3HlqLclJNABax2pOvTHVnQlf25TSNwJRtmzOvcg+6xYbPdgRoeEVsWbmgbpX7Vi
-oNSFQEac2rdzKZEzkPDRpvlwVQuACGNbLpbpFmV4G1lavt0ecRuhohHgCtO03nx+
+P8FYelYCiYTPezjqZgPG1gmq0Uf/drlTrjwsG2njEcuK7hip+LdJnIrtpIrabpIk
-UOQ1Enla3gA002qw2OI71cmrxYzpS3tgZCGR3QsOOibls+/1kBQE/F4HIyhLIImo
+lZRa7Y/JBM3gP/rR1fu9lhzJ97s3NabuHzPwyouSTTknaaiGwSV8F5frh9NGcFhd
-dGC98Q1hLYVS8oKwK+DifK4mDdRSbXE7ek/5+vMOsKWdcs2dTcn9WoijJV6YVX/e
+G7giCLZLKklQB4IUTOFcVFSZmeAGy6KBqyT10N2kkBrsrcWhyMKIU9X0+6hh3Tlc
-HU7ocaMm/c5SQ0yndcCU2w==
+JEla9as6qFvt1dFGp+qeww==
 -----END CERTIFICATE-----

integration/fixtures/server3.key.insecure

@@ -1,27 +1,27 @@
 -----BEGIN RSA PRIVATE KEY-----
-MIIEpAIBAAKCAQEAt/0rMGjckVnVmLyUfi3oxILH917UzIdJHhLSwP6uX8Zx2R08
+MIIEpAIBAAKCAQEAsop/3OHByC5LndV33Y8uoe0M2lNuXicz/mpjLucdXkUdbu6i
-s4sYqKQdksxTln27XLkcrbdBYHIpx0sUORByShQEPEBH6zF1VflGBVOQxH3N2//g
+VAcUDQGMnDHPv8sLf0b3nQ+lIiwrtj30/tow9WpUfkUYv66gNsczO3+AhQaBaPnU
-dV6u1qQo262uejSVR2qEK1XTlhEd5Tz+08xyLIThwFt5IuW/EZ7j3FbZyXSJngWq
+nfz7HrM3/28i8BUgEKUGHMS4HaRYlTorIHVXkb7XCecpFcsH1ALR//u+p31/bU7u
-73GEJLWGVIsM003UDPDWHCm0aQ/e+hNVY/NT3kReGq2cOF/tA7hClwhnjhmbSlYy
+wmZZ5WEYm4RTDACnWnlYMYzZOfwWPLns71/WdPhZWpaEHkRu9gYMXZnkNbIrP3QR
-jKKn1MTXptPCOW2IB06zayEr72GhD1vY5br1xam+3CdaxYAAK95AcVRnt2sgNzty
+Y7BXDfROFxAcXntfpYl2U2JA6tgohY7jvlAo/BtRKlGS/DWPC+WVTyziXqkHWEpM
-/c4++jtqifHgIcqrESqeaUjGKk+3yeQq3IevXQIDAQABAoIBACc8fjFcq2zz03E3
+BxQrdSxavOl/b6by/yi7fm4UP9yl3ZsHHkxWWQIDAQABAoIBAQCVyfrCDqlsT+Li
-BhPChpkhqrM+LfNQBm+7Y+Z0aYtTLoQ2j/NZ/nA4T3Y2zLyTI5mqgEsrgW2n6vDt
+1UBOIp0l/uIEnXCAD3XgodL6e6249FVgR1brFlEtJDqapHO+XhQUQS7ml0ScqeA2
-OerRbw4NJroSm0O00Gj9N8l7AKxmh7ga4SsmffKYH355k3PMMul/9Z+oNe8Sx2VT
+cj6EPfxLOV0P3tqHnnMN4gvKhAsID9AsiUVnEuJ//C4j4FK4h5CyRjEdm7E4NTSY
-lKRmPRLxY5M57qNai1yencknXFpxetSzHwusfDFFNiStN8rTDeIgJtn9FKxhMAcJ
+ZgfeoHPKdAinZ0eh4Ad+SKt0jvmCPDD1L+6bxpJ6E258xPDxB71rHTCgnwZZmXrN
-P0D8rHH+x4/8XGSVtjANJr22cj1win0dce4tVVUQp60pBAFhGIY+uPOM8vmxkJYx
+rHDg07tVVU6lYtXEsZAsyIBIxXV/RaCt4xSijM1C7kuSsUE3+CCw+pzQUvHDxkuk
-xQTmR6bh7S5KrYT1BNK3cpo6gQGE6HJsPzTuijN6hqvJ7ufTl/lq2T0ETVEemHOf
+FPxE5hONzkUaCSBKTv4L6gVaiYa30Jo9THuTRWvzDJmcnNwlYgRLeIR8PJY0eHqv
-B5NKOwECgYEAxigkRZeaCsvvUcPWEYrnIhZt6SfCx5iKlkVQsG/uYps3aWohkBAY
+FYJbLdQBAoGBAOeiW1aHpNO+K4BqVMzm7fvz0a3DBkml/wIKSvw3dbTYnyIXFvDB
-Ws6rr55qkH7hsye9ikeyhT9VDnWHeAbTr2SKIsa8CAc+gQoPzYfY4GVYzbNP+/rj
+Be7OZLhiWPwaE/58aQWh+/OGCr88yyCLAt2mOQ5aMalKpdSCaY5swEnzt923pY9z
-d1jS/s5/LyVryi3ln3EJN1fUHv+ZzvEWORSa/WVHkBuxMxoeHX8PhSkCgYEA7bJK
+jt3DnhX8aXggPbqM6eJjaxJY7jIMSDNKUQZKJeSesr/EzFo0CRkkepyBAoGBAMVS
-inBlLXtUy+c/q5DigYLIg0MquQ9slcfJapcwgswmbLnagtW9oQxlsM/uSiqR4br+
+Z2nIY+G2+P1VSUEbI3dbaZ3ciMEDLc+rZQs0fx8+xQCD71eCU9ggxf+O0R1/0smm
-9SKD7TNLNhwJmByG6HlPyjCF2FGPhUg4pIWuRckPqJ6o2SgONupD3mZdu/CyzsuO
+9so65KrmKl3yOt8OQW3YgUpQqIQdJPHnfuTnsU7y/+zRl6k119gV89LLDlCM7nfW
-pyCqq0d2yeLXW77MxidMUeNfPsAA9lvRRulhCxUCgYEAwbM1ma2TD+DABP5ZQHa2
+5/ey/iJLXQxfC7OoFF/hQM0odmorA8jBuqKDWy3ZAoGAZL6gq0njzpRvpzKYH2Zx
-b3TbZeHPHgr31eLV+FLCBTPTG8F6I3gIRqPl4dsKMktFVzqOpiBl2qjI/URX8zVB
+K5woHkMsgOvJtcF0S65za2ysCc+xEpVhVzQ9alScD0noWE8T/nctdgVetz5huo27
-Mh8mhM4duf9S0xLB1dhoYRnQj+srUZazSdPTFO9IFg8PaegpoQz+xFGfcdnLQSYb
+eVvKhQuFffQRnBP8hQ2XtJJj7fLp9zJzeNCT+UwHM1ASiQiw0N4cu6YiM3JUFLrF
-4hpJU0/wf2cCdYCfVZgB1NkCgYB9K/a1EJs3aEsvVYfiAVpGeWi+NxC4g7ba6WrY
+8s5dHMpJRE778l+fdWgATAECgYEAmJ3osE+2uUCtCjvpwbp8zvdcFCYbe7W6vBGj
-BuY0+u0BNJ4taAGEXdLvWZBS3jgUdzTsQlDXCLwCsqEayWsB4WBzSToywECkH3Q0
+wGvlGsSQ2JozB2sc8GBA5C2RHhDcdu11meq9LFWDVVBiKl27S3uWXGVQQYbNKXDU
-r3EmrsrgMS0Zrk5N/O/gnmeeIRMIc4mb2UgHCoszpZFjbwbHEsrOFL6DfPkEwzVh
+m7V8VUTrnz5o4A5uGIq6IEK/mpu2YehNWC8QEnRZzpTA1z7cK2Bsn4F5PRpx/deh
-8mR4QQKBgQC88WRxSGnF0AyoM5tB8/x80O9a4CLsSwfFVzEyJcdh3uL9+JzfNVta
+Q8r3PdkCgYBd2rT+S4/51C5AnIhgMF/PYl0+DYMFD8HAfsx7VTaIUmFQ4devHMOz
-YsXy5ah2SyBrI7xQd/LXhv3/7GY4eZIQuwcOH74hQNHdm2u3bWfmg39jH+HgWK8m
+J6lbqRyEITZtXgna1n35LkyBDcPwsEtntjJOP+xneCtKzozdzhXyoAw2xQR3gqvV
-mqYvWYE9qLXIVwBzsCzQtxq4z90KMiZ2qXV0YMFPGjZt+bBkbjJTOw==
+7YtV3miYQiOTqjOefViMhR/XiOV2zng3OId1AQObfOUZODJPfSN26g==
 -----END RSA PRIVATE KEY-----

integration/v3_alarm_test.go

@@ -27,6 +27,7 @@ import (
 	"go.etcd.io/etcd/mvcc"
 	"go.etcd.io/etcd/mvcc/backend"
 	"go.etcd.io/etcd/pkg/testutil"
+	"go.etcd.io/etcd/pkg/traceutil"
 
 	"go.uber.org/zap"
 )
@@ -173,7 +174,7 @@ func TestV3CorruptAlarm(t *testing.T) {
 	// NOTE: cluster_proxy mode with namespacing won't set 'k', but namespace/'k'.
 	s.Put([]byte("abc"), []byte("def"), 0)
 	s.Put([]byte("xyz"), []byte("123"), 0)
-	s.Compact(5)
+	s.Compact(traceutil.TODO(), 5)
 	s.Commit()
 	s.Close()
 	be.Close()

mvcc/kv.go

@@ -18,6 +18,7 @@ import (
 	"go.etcd.io/etcd/lease"
 	"go.etcd.io/etcd/mvcc/backend"
 	"go.etcd.io/etcd/mvcc/mvccpb"
+	"go.etcd.io/etcd/pkg/traceutil"
 )
 
 type RangeOptions struct {
@@ -102,10 +103,10 @@ type KV interface {
 	WriteView
 
 	// Read creates a read transaction.
-	Read() TxnRead
+	Read(trace *traceutil.Trace) TxnRead
 
 	// Write creates a write transaction.
-	Write() TxnWrite
+	Write(trace *traceutil.Trace) TxnWrite
 
 	// Hash computes the hash of the KV's backend.
 	Hash() (hash uint32, revision int64, err error)
@@ -114,7 +115,7 @@ type KV interface {
 	HashByRev(rev int64) (hash uint32, revision int64, compactRev int64, err error)
 
 	// Compact frees all superseded keys with revisions less than rev.
-	Compact(rev int64) (<-chan struct{}, error)
+	Compact(trace *traceutil.Trace, rev int64) (<-chan struct{}, error)
 
 	// Commit commits outstanding txns into the underlying backend.
 	Commit()

mvcc/kv_test.go

@@ -25,6 +25,7 @@ import (
 	"go.etcd.io/etcd/mvcc/backend"
 	"go.etcd.io/etcd/mvcc/mvccpb"
 	"go.etcd.io/etcd/pkg/testutil"
+	"go.etcd.io/etcd/pkg/traceutil"
 
 	"github.com/prometheus/client_golang/prometheus"
 	dto "github.com/prometheus/client_model/go"
@@ -47,7 +48,7 @@ var (
 		return kv.Range(key, end, ro)
 	}
 	txnRangeFunc = func(kv KV, key, end []byte, ro RangeOptions) (*RangeResult, error) {
-		txn := kv.Read()
+		txn := kv.Read(traceutil.TODO())
 		defer txn.End()
 		return txn.Range(key, end, ro)
 	}
@@ -56,7 +57,7 @@ var (
 		return kv.Put(key, value, lease)
 	}
 	txnPutFunc = func(kv KV, key, value []byte, lease lease.LeaseID) int64 {
-		txn := kv.Write()
+		txn := kv.Write(traceutil.TODO())
 		defer txn.End()
 		return txn.Put(key, value, lease)
 	}
@@ -65,7 +66,7 @@ var (
 		return kv.DeleteRange(key, end)
 	}
 	txnDeleteRangeFunc = func(kv KV, key, end []byte) (n, rev int64) {
-		txn := kv.Write()
+		txn := kv.Write(traceutil.TODO())
 		defer txn.End()
 		return txn.DeleteRange(key, end)
 	}
@@ -182,7 +183,7 @@ func testKVRangeBadRev(t *testing.T, f rangeFunc) {
 	defer cleanup(s, b, tmpPath)
 
 	put3TestKVs(s)
-	if _, err := s.Compact(4); err != nil {
+	if _, err := s.Compact(traceutil.TODO(), 4); err != nil {
 		t.Fatalf("compact error (%v)", err)
 	}
 
@@ -409,7 +410,7 @@ func TestKVTxnBlockWriteOperations(t *testing.T) {
 		func() { s.DeleteRange([]byte("foo"), nil) },
 	}
 	for i, tt := range tests {
-		txn := s.Write()
+		txn := s.Write(traceutil.TODO())
 		done := make(chan struct{}, 1)
 		go func() {
 			tt()
@@ -438,7 +439,7 @@ func TestKVTxnNonBlockRange(t *testing.T) {
 	s := NewStore(zap.NewExample(), b, &lease.FakeLessor{}, nil, StoreConfig{})
 	defer cleanup(s, b, tmpPath)
 
-	txn := s.Write()
+	txn := s.Write(traceutil.TODO())
 	defer txn.End()
 
 	donec := make(chan struct{})
@@ -460,7 +461,7 @@ func TestKVTxnOperationInSequence(t *testing.T) {
 	defer cleanup(s, b, tmpPath)
 
 	for i := 0; i < 10; i++ {
-		txn := s.Write()
+		txn := s.Write(traceutil.TODO())
 		base := int64(i + 1)
 
 		// put foo
@@ -544,7 +545,7 @@ func TestKVCompactReserveLastValue(t *testing.T) {
 		},
 	}
 	for i, tt := range tests {
-		_, err := s.Compact(tt.rev)
+		_, err := s.Compact(traceutil.TODO(), tt.rev)
 		if err != nil {
 			t.Errorf("#%d: unexpect compact error %v", i, err)
 		}
@@ -580,7 +581,7 @@ func TestKVCompactBad(t *testing.T) {
 		{100, ErrFutureRev},
 	}
 	for i, tt := range tests {
-		_, err := s.Compact(tt.rev)
+		_, err := s.Compact(traceutil.TODO(), tt.rev)
 		if err != tt.werr {
 			t.Errorf("#%d: compact error = %v, want %v", i, err, tt.werr)
 		}
@@ -626,7 +627,7 @@ func TestKVRestore(t *testing.T) {
 		func(kv KV) {
 			kv.Put([]byte("foo"), []byte("bar0"), 1)
 			kv.Put([]byte("foo"), []byte("bar1"), 2)
-			kv.Compact(1)
+			kv.Compact(traceutil.TODO(), 1)
 		},
 	}
 	for i, tt := range tests {

mvcc/kv_view.go

@@ -14,24 +14,27 @@
 
 package mvcc
 
-import "go.etcd.io/etcd/lease"
+import (
+	"go.etcd.io/etcd/lease"
+	"go.etcd.io/etcd/pkg/traceutil"
+)
 
 type readView struct{ kv KV }
 
 func (rv *readView) FirstRev() int64 {
-	tr := rv.kv.Read()
+	tr := rv.kv.Read(traceutil.TODO())
 	defer tr.End()
 	return tr.FirstRev()
 }
 
 func (rv *readView) Rev() int64 {
-	tr := rv.kv.Read()
+	tr := rv.kv.Read(traceutil.TODO())
 	defer tr.End()
 	return tr.Rev()
 }
 
 func (rv *readView) Range(key, end []byte, ro RangeOptions) (r *RangeResult, err error) {
-	tr := rv.kv.Read()
+	tr := rv.kv.Read(traceutil.TODO())
 	defer tr.End()
 	return tr.Range(key, end, ro)
 }
@@ -39,13 +42,13 @@ func (rv *readView) Range(key, end []byte, ro RangeOptions) (r *RangeResult, err
 type writeView struct{ kv KV }
 
 func (wv *writeView) DeleteRange(key, end []byte) (n, rev int64) {
-	tw := wv.kv.Write()
+	tw := wv.kv.Write(traceutil.TODO())
 	defer tw.End()
 	return tw.DeleteRange(key, end)
 }
 
 func (wv *writeView) Put(key, value []byte, lease lease.LeaseID) (rev int64) {
-	tw := wv.kv.Write()
+	tw := wv.kv.Write(traceutil.TODO())
 	defer tw.End()
 	return tw.Put(key, value, lease)
 }

mvcc/kvstore.go

@@ -29,6 +29,7 @@ import (
 	"go.etcd.io/etcd/mvcc/backend"
 	"go.etcd.io/etcd/mvcc/mvccpb"
 	"go.etcd.io/etcd/pkg/schedule"
+	"go.etcd.io/etcd/pkg/traceutil"
 
 	"github.com/coreos/pkg/capnslog"
 	"go.uber.org/zap"
@@ -140,7 +141,7 @@ func NewStore(lg *zap.Logger, b backend.Backend, le lease.Lessor, ig ConsistentI
 	s.ReadView = &readView{s}
 	s.WriteView = &writeView{s}
 	if s.le != nil {
-		s.le.SetRangeDeleter(func() lease.TxnDelete { return s.Write() })
+		s.le.SetRangeDeleter(func() lease.TxnDelete { return s.Write(traceutil.TODO()) })
 	}
 
 	tx := s.b.BatchTx()
@@ -269,9 +270,10 @@ func (s *store) updateCompactRev(rev int64) (<-chan struct{}, error) {
 	return nil, nil
 }
 
-func (s *store) compact(rev int64) (<-chan struct{}, error) {
+func (s *store) compact(trace *traceutil.Trace, rev int64) (<-chan struct{}, error) {
 	start := time.Now()
 	keep := s.kvindex.Compact(rev)
+	trace.Step("compact in-memory index tree")
 	ch := make(chan struct{})
 	var j = func(ctx context.Context) {
 		if ctx.Err() != nil {
@@ -288,6 +290,7 @@ func (s *store) compact(rev int64) (<-chan struct{}, error) {
 	s.fifoSched.Schedule(j)
 
 	indexCompactionPauseMs.Observe(float64(time.Since(start) / time.Millisecond))
+	trace.Step("schedule compaction")
 	return ch, nil
 }
 
@@ -297,21 +300,21 @@ func (s *store) compactLockfree(rev int64) (<-chan struct{}, error) {
 		return ch, err
 	}
 
-	return s.compact(rev)
+	return s.compact(traceutil.TODO(), rev)
 }
 
-func (s *store) Compact(rev int64) (<-chan struct{}, error) {
+func (s *store) Compact(trace *traceutil.Trace, rev int64) (<-chan struct{}, error) {
 	s.mu.Lock()
 
 	ch, err := s.updateCompactRev(rev)
-
+	trace.Step("check and update compact revision")
 	if err != nil {
 		s.mu.Unlock()
 		return ch, err
 	}
 	s.mu.Unlock()
 
-	return s.compact(rev)
+	return s.compact(trace, rev)
 }
 
 // DefaultIgnores is a map of keys to ignore in hash checking.
@@ -355,19 +358,7 @@ func (s *store) Restore(b backend.Backend) error {
 }
 
 func (s *store) restore() error {
-	b := s.b
+	s.setupMetricsReporter()
-	reportDbTotalSizeInBytesMu.Lock()
-	reportDbTotalSizeInBytes = func() float64 { return float64(b.Size()) }
-	reportDbTotalSizeInBytesMu.Unlock()
-	reportDbTotalSizeInBytesDebugMu.Lock()
-	reportDbTotalSizeInBytesDebug = func() float64 { return float64(b.Size()) }
-	reportDbTotalSizeInBytesDebugMu.Unlock()
-	reportDbTotalSizeInUseInBytesMu.Lock()
-	reportDbTotalSizeInUseInBytes = func() float64 { return float64(b.SizeInUse()) }
-	reportDbTotalSizeInUseInBytesMu.Unlock()
-	reportDbOpenReadTxNMu.Lock()
-	reportDbOpenReadTxN = func() float64 { return float64(b.OpenReadTxN()) }
-	reportDbOpenReadTxNMu.Unlock()
 
 	min, max := newRevBytes(), newRevBytes()
 	revToBytes(revision{main: 1}, min)
@@ -579,6 +570,36 @@ func (s *store) ConsistentIndex() uint64 {
 	return v
 }
 
+func (s *store) setupMetricsReporter() {
+	b := s.b
+	reportDbTotalSizeInBytesMu.Lock()
+	reportDbTotalSizeInBytes = func() float64 { return float64(b.Size()) }
+	reportDbTotalSizeInBytesMu.Unlock()
+	reportDbTotalSizeInBytesDebugMu.Lock()
+	reportDbTotalSizeInBytesDebug = func() float64 { return float64(b.Size()) }
+	reportDbTotalSizeInBytesDebugMu.Unlock()
+	reportDbTotalSizeInUseInBytesMu.Lock()
+	reportDbTotalSizeInUseInBytes = func() float64 { return float64(b.SizeInUse()) }
+	reportDbTotalSizeInUseInBytesMu.Unlock()
+	reportDbOpenReadTxNMu.Lock()
+	reportDbOpenReadTxN = func() float64 { return float64(b.OpenReadTxN()) }
+	reportDbOpenReadTxNMu.Unlock()
+	reportCurrentRevMu.Lock()
+	reportCurrentRev = func() float64 {
+		s.revMu.RLock()
+		defer s.revMu.RUnlock()
+		return float64(s.currentRev)
+	}
+	reportCurrentRevMu.Unlock()
+	reportCompactRevMu.Lock()
+	reportCompactRev = func() float64 {
+		s.revMu.RLock()
+		defer s.revMu.RUnlock()
+		return float64(s.compactMainRev)
+	}
+	reportCompactRevMu.Unlock()
+}
+
 // appendMarkTombstone appends tombstone mark to normal revision bytes.
 func appendMarkTombstone(lg *zap.Logger, b []byte) []byte {
 	if len(b) != revBytesLen {

mvcc/kvstore_bench_test.go

@@ -20,6 +20,7 @@ import (
 
 	"go.etcd.io/etcd/lease"
 	"go.etcd.io/etcd/mvcc/backend"
+	"go.etcd.io/etcd/pkg/traceutil"
 
 	"go.uber.org/zap"
 )
@@ -130,7 +131,7 @@ func BenchmarkStoreTxnPut(b *testing.B) {
 	b.ResetTimer()
 	b.ReportAllocs()
 	for i := 0; i < b.N; i++ {
-		txn := s.Write()
+		txn := s.Write(traceutil.TODO())
 		txn.Put(keys[i], vals[i], lease.NoLease)
 		txn.End()
 	}
@@ -151,7 +152,7 @@ func benchmarkStoreRestore(revsPerKey int, b *testing.B) {
 
 	for i := 0; i < b.N; i++ {
 		for j := 0; j < revsPerKey; j++ {
-			txn := s.Write()
+			txn := s.Write(traceutil.TODO())
 			txn.Put(keys[i], vals[i], lease.NoLease)
 			txn.End()
 		}

mvcc/kvstore_compaction_test.go

@@ -22,6 +22,7 @@ import (
 
 	"go.etcd.io/etcd/lease"
 	"go.etcd.io/etcd/mvcc/backend"
+	"go.etcd.io/etcd/pkg/traceutil"
 	"go.uber.org/zap"
 )
 
@@ -109,7 +110,7 @@ func TestCompactAllAndRestore(t *testing.T) {
 
 	rev := s0.Rev()
 	// compact all keys
-	done, err := s0.Compact(rev)
+	done, err := s0.Compact(traceutil.TODO(), rev)
 	if err != nil {
 		t.Fatal(err)
 	}

mvcc/kvstore_test.go

@@ -34,6 +34,7 @@ import (
 	"go.etcd.io/etcd/mvcc/mvccpb"
 	"go.etcd.io/etcd/pkg/schedule"
 	"go.etcd.io/etcd/pkg/testutil"
+	"go.etcd.io/etcd/pkg/traceutil"
 
 	"go.uber.org/zap"
 )
@@ -331,7 +332,7 @@ func TestStoreCompact(t *testing.T) {
 	key2 := newTestKeyBytes(revision{2, 0}, false)
 	b.tx.rangeRespc <- rangeResp{[][]byte{key1, key2}, nil}
 
-	s.Compact(3)
+	s.Compact(traceutil.TODO(), 3)
 	s.fifoSched.WaitFinish(1)
 
 	if s.compactMainRev != 3 {
@@ -582,7 +583,7 @@ func TestHashKVWhenCompacting(t *testing.T) {
 	go func() {
 		defer wg.Done()
 		for i := 100; i >= 0; i-- {
-			_, err := s.Compact(int64(rev - 1 - i))
+			_, err := s.Compact(traceutil.TODO(), int64(rev-1-i))
 			if err != nil {
 				t.Error(err)
 			}
@@ -609,7 +610,7 @@ func TestHashKVZeroRevision(t *testing.T) {
 	for i := 2; i <= rev; i++ {
 		s.Put([]byte("foo"), []byte(fmt.Sprintf("bar%d", i)), lease.NoLease)
 	}
-	if _, err := s.Compact(int64(rev / 2)); err != nil {
+	if _, err := s.Compact(traceutil.TODO(), int64(rev/2)); err != nil {
 		t.Fatal(err)
 	}
 
@@ -639,7 +640,7 @@ func TestTxnPut(t *testing.T) {
 	defer cleanup(s, b, tmpPath)
 
 	for i := 0; i < sliceN; i++ {
-		txn := s.Write()
+		txn := s.Write(traceutil.TODO())
 		base := int64(i + 2)
 		if rev := txn.Put(keys[i], vals[i], lease.NoLease); rev != base {
 			t.Errorf("#%d: rev = %d, want %d", i, rev, base)
@@ -658,7 +659,7 @@ func TestConcurrentReadNotBlockingWrite(t *testing.T) {
 	s.Put([]byte("foo"), []byte("bar"), lease.NoLease)
 
 	// readTx simulates a long read request
-	readTx1 := s.Read()
+	readTx1 := s.Read(traceutil.TODO())
 
 	// write should not be blocked by reads
 	done := make(chan struct{})
@@ -673,7 +674,7 @@ func TestConcurrentReadNotBlockingWrite(t *testing.T) {
 	}
 
 	// readTx2 simulates a short read request
-	readTx2 := s.Read()
+	readTx2 := s.Read(traceutil.TODO())
 	ro := RangeOptions{Limit: 1, Rev: 0, Count: false}
 	ret, err := readTx2.Range([]byte("foo"), nil, ro)
 	if err != nil {
@@ -730,7 +731,7 @@ func TestConcurrentReadTxAndWrite(t *testing.T) {
 			defer wg.Done()
 			time.Sleep(time.Duration(mrand.Intn(100)) * time.Millisecond) // random starting time
 
-			tx := s.Write()
+			tx := s.Write(traceutil.TODO())
 			numOfPuts := mrand.Intn(maxNumOfPutsPerWrite) + 1
 			var pendingKvs kvs
 			for j := 0; j < numOfPuts; j++ {
@@ -756,7 +757,7 @@ func TestConcurrentReadTxAndWrite(t *testing.T) {
 			mu.Lock()
 			wKVs := make(kvs, len(committedKVs))
 			copy(wKVs, committedKVs)
-			tx := s.Read()
+			tx := s.Read(traceutil.TODO())
 			mu.Unlock()
 			// get all keys in backend store, and compare with wKVs
 			ret, err := tx.Range([]byte("\x00000000"), []byte("\xffffffff"), RangeOptions{})

mvcc/kvstore_txn.go

@@ -18,6 +18,7 @@ import (
 	"go.etcd.io/etcd/lease"
 	"go.etcd.io/etcd/mvcc/backend"
 	"go.etcd.io/etcd/mvcc/mvccpb"
+	"go.etcd.io/etcd/pkg/traceutil"
 	"go.uber.org/zap"
 )
 
@@ -27,9 +28,11 @@ type storeTxnRead struct {
 
 	firstRev int64
 	rev      int64
+
+	trace *traceutil.Trace
 }
 
-func (s *store) Read() TxnRead {
+func (s *store) Read(trace *traceutil.Trace) TxnRead {
 	s.mu.RLock()
 	s.revMu.RLock()
 	// backend holds b.readTx.RLock() only when creating the concurrentReadTx. After
@@ -38,7 +41,7 @@ func (s *store) Read() TxnRead {
 	tx.RLock() // RLock is no-op. concurrentReadTx does not need to be locked after it is created.
 	firstRev, rev := s.compactMainRev, s.currentRev
 	s.revMu.RUnlock()
-	return newMetricsTxnRead(&storeTxnRead{s, tx, firstRev, rev})
+	return newMetricsTxnRead(&storeTxnRead{s, tx, firstRev, rev, trace})
 }
 
 func (tr *storeTxnRead) FirstRev() int64 { return tr.firstRev }
@@ -61,12 +64,12 @@ type storeTxnWrite struct {
 	changes  []mvccpb.KeyValue
 }
 
-func (s *store) Write() TxnWrite {
+func (s *store) Write(trace *traceutil.Trace) TxnWrite {
 	s.mu.RLock()
 	tx := s.b.BatchTx()
 	tx.Lock()
 	tw := &storeTxnWrite{
-		storeTxnRead: storeTxnRead{s, tx, 0, 0},
+		storeTxnRead: storeTxnRead{s, tx, 0, 0, trace},
 		tx:           tx,
 		beginRev:     s.currentRev,
 		changes:      make([]mvccpb.KeyValue, 0, 4),
@@ -124,6 +127,7 @@ func (tr *storeTxnRead) rangeKeys(key, end []byte, curRev int64, ro RangeOptions
 	}
 
 	revpairs := tr.s.kvindex.Revisions(key, end, rev)
+	tr.trace.Step("range keys from in-memory index tree")
 	if len(revpairs) == 0 {
 		return &RangeResult{KVs: nil, Count: 0, Rev: curRev}, nil
 	}
@@ -163,6 +167,7 @@ func (tr *storeTxnRead) rangeKeys(key, end []byte, curRev int64, ro RangeOptions
 			}
 		}
 	}
+	tr.trace.Step("range keys from bolt db")
 	return &RangeResult{KVs: kvs, Count: len(revpairs), Rev: curRev}, nil
 }
 
@@ -178,7 +183,7 @@ func (tw *storeTxnWrite) put(key, value []byte, leaseID lease.LeaseID) {
 		c = created.main
 		oldLease = tw.s.le.GetLease(lease.LeaseItem{Key: string(key)})
 	}
-
+	tw.trace.Step("get key's previous created_revision and leaseID")
 	ibytes := newRevBytes()
 	idxRev := revision{main: rev, sub: int64(len(tw.changes))}
 	revToBytes(idxRev, ibytes)
@@ -205,9 +210,11 @@ func (tw *storeTxnWrite) put(key, value []byte, leaseID lease.LeaseID) {
 		}
 	}
 
+	tw.trace.Step("marshal mvccpb.KeyValue")
 	tw.tx.UnsafeSeqPut(keyBucketName, ibytes, d)
 	tw.s.kvindex.Put(key, idxRev)
 	tw.changes = append(tw.changes, kv)
+	tw.trace.Step("store kv pair into bolt db")
 
 	if oldLease != lease.NoLease {
 		if tw.s.le == nil {
@@ -234,6 +241,7 @@ func (tw *storeTxnWrite) put(key, value []byte, leaseID lease.LeaseID) {
 			panic("unexpected error from lease Attach")
 		}
 	}
+	tw.trace.Step("attach lease to kv pair")
 }
 
 func (tw *storeTxnWrite) deleteRange(key, end []byte) int64 {

mvcc/metrics.go

@@ -264,6 +264,38 @@ var (
 		// highest bucket start of 0.01 sec * 2^14 == 163.84 sec
 		Buckets: prometheus.ExponentialBuckets(.01, 2, 15),
 	})
+
+	currentRev = prometheus.NewGaugeFunc(prometheus.GaugeOpts{
+		Namespace: "etcd_debugging",
+		Subsystem: "mvcc",
+		Name:      "current_revision",
+		Help:      "The current revision of store.",
+	},
+		func() float64 {
+			reportCurrentRevMu.RLock()
+			defer reportCurrentRevMu.RUnlock()
+			return reportCurrentRev()
+		},
+	)
+	// overridden by mvcc initialization
+	reportCurrentRevMu sync.RWMutex
+	reportCurrentRev   = func() float64 { return 0 }
+
+	compactRev = prometheus.NewGaugeFunc(prometheus.GaugeOpts{
+		Namespace: "etcd_debugging",
+		Subsystem: "mvcc",
+		Name:      "compact_revision",
+		Help:      "The revision of the last compaction in store.",
+	},
+		func() float64 {
+			reportCompactRevMu.RLock()
+			defer reportCompactRevMu.RUnlock()
+			return reportCompactRev()
+		},
+	)
+	// overridden by mvcc initialization
+	reportCompactRevMu sync.RWMutex
+	reportCompactRev   = func() float64 { return 0 }
 )
 
 func init() {
@@ -291,6 +323,8 @@ func init() {
 	prometheus.MustRegister(dbOpenReadTxN)
 	prometheus.MustRegister(hashSec)
 	prometheus.MustRegister(hashRevSec)
+	prometheus.MustRegister(currentRev)
+	prometheus.MustRegister(compactRev)
 }
 
 // ReportEventReceived reports that an event is received.

mvcc/watchable_store.go

@@ -21,6 +21,7 @@ import (
 	"go.etcd.io/etcd/lease"
 	"go.etcd.io/etcd/mvcc/backend"
 	"go.etcd.io/etcd/mvcc/mvccpb"
+	"go.etcd.io/etcd/pkg/traceutil"
 	"go.uber.org/zap"
 )
 
@@ -84,7 +85,7 @@ func newWatchableStore(lg *zap.Logger, b backend.Backend, le lease.Lessor, ig Co
 	s.store.WriteView = &writeView{s}
 	if s.le != nil {
 		// use this store as the deleter so revokes trigger watch events
-		s.le.SetRangeDeleter(func() lease.TxnDelete { return s.Write() })
+		s.le.SetRangeDeleter(func() lease.TxnDelete { return s.Write(traceutil.TODO()) })
 	}
 	s.wg.Add(2)
 	go s.syncWatchersLoop()

mvcc/watchable_store_bench_test.go

@@ -21,6 +21,7 @@ import (
 
 	"go.etcd.io/etcd/lease"
 	"go.etcd.io/etcd/mvcc/backend"
+	"go.etcd.io/etcd/pkg/traceutil"
 
 	"go.uber.org/zap"
 )
@@ -59,7 +60,7 @@ func BenchmarkWatchableStoreTxnPut(b *testing.B) {
 	b.ResetTimer()
 	b.ReportAllocs()
 	for i := 0; i < b.N; i++ {
-		txn := s.Write()
+		txn := s.Write(traceutil.TODO())
 		txn.Put(keys[i], vals[i], lease.NoLease)
 		txn.End()
 	}

mvcc/watchable_store_test.go

@@ -26,6 +26,7 @@ import (
 	"go.etcd.io/etcd/lease"
 	"go.etcd.io/etcd/mvcc/backend"
 	"go.etcd.io/etcd/mvcc/mvccpb"
+	"go.etcd.io/etcd/pkg/traceutil"
 	"go.uber.org/zap"
 )
 
@@ -237,7 +238,7 @@ func TestWatchCompacted(t *testing.T) {
 	for i := 0; i < maxRev; i++ {
 		s.Put(testKey, testValue, lease.NoLease)
 	}
-	_, err := s.Compact(compactRev)
+	_, err := s.Compact(traceutil.TODO(), compactRev)
 	if err != nil {
 		t.Fatalf("failed to compact kv (%v)", err)
 	}

mvcc/watchable_store_txn.go

@@ -14,7 +14,10 @@
 
 package mvcc
 
-import "go.etcd.io/etcd/mvcc/mvccpb"
+import (
+	"go.etcd.io/etcd/mvcc/mvccpb"
+	"go.etcd.io/etcd/pkg/traceutil"
+)
 
 func (tw *watchableStoreTxnWrite) End() {
 	changes := tw.Changes()
@@ -48,4 +51,6 @@ type watchableStoreTxnWrite struct {
 	s *watchableStore
 }
 
-func (s *watchableStore) Write() TxnWrite { return &watchableStoreTxnWrite{s.store.Write(), s} }
+func (s *watchableStore) Write(trace *traceutil.Trace) TxnWrite {
+	return &watchableStoreTxnWrite{s.store.Write(trace), s}
+}

pkg/traceutil/trace.go

@@ -0,0 +1,172 @@
+// Copyright 2019 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package traceutil implements tracing utilities using "context".
+package traceutil
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"math/rand"
+	"time"
+
+	"go.uber.org/zap"
+)
+
+const (
+	TraceKey     = "trace"
+	StartTimeKey = "startTime"
+)
+
+// Field is a kv pair to record additional details of the trace.
+type Field struct {
+	Key   string
+	Value interface{}
+}
+
+func (f *Field) format() string {
+	return fmt.Sprintf("%s:%v; ", f.Key, f.Value)
+}
+
+func writeFields(fields []Field) string {
+	if len(fields) == 0 {
+		return ""
+	}
+	var buf bytes.Buffer
+	buf.WriteString("{")
+	for _, f := range fields {
+		buf.WriteString(f.format())
+	}
+	buf.WriteString("}")
+	return buf.String()
+}
+
+type Trace struct {
+	operation    string
+	lg           *zap.Logger
+	fields       []Field
+	startTime    time.Time
+	steps        []step
+	stepDisabled bool
+}
+
+type step struct {
+	time   time.Time
+	msg    string
+	fields []Field
+}
+
+func New(op string, lg *zap.Logger, fields ...Field) *Trace {
+	return &Trace{operation: op, lg: lg, startTime: time.Now(), fields: fields}
+}
+
+// TODO returns a non-nil, empty Trace
+func TODO() *Trace {
+	return &Trace{}
+}
+
+func Get(ctx context.Context) *Trace {
+	if trace, ok := ctx.Value(TraceKey).(*Trace); ok && trace != nil {
+		return trace
+	}
+	return TODO()
+}
+
+func (t *Trace) GetStartTime() time.Time {
+	return t.startTime
+}
+
+func (t *Trace) SetStartTime(time time.Time) {
+	t.startTime = time
+}
+
+func (t *Trace) InsertStep(at int, time time.Time, msg string, fields ...Field) {
+	newStep := step{time, msg, fields}
+	if at < len(t.steps) {
+		t.steps = append(t.steps[:at+1], t.steps[at:]...)
+		t.steps[at] = newStep
+	} else {
+		t.steps = append(t.steps, newStep)
+	}
+}
+
+// Step adds step to trace
+func (t *Trace) Step(msg string, fields ...Field) {
+	if !t.stepDisabled {
+		t.steps = append(t.steps, step{time: time.Now(), msg: msg, fields: fields})
+	}
+}
+
+// DisableStep sets the flag to prevent the trace from adding steps
+func (t *Trace) DisableStep() {
+	t.stepDisabled = true
+}
+
+// EnableStep re-enable the trace to add steps
+func (t *Trace) EnableStep() {
+	t.stepDisabled = false
+}
+
+func (t *Trace) AddField(fields ...Field) {
+	for _, f := range fields {
+		t.fields = append(t.fields, f)
+	}
+}
+
+// Log dumps all steps in the Trace
+func (t *Trace) Log() {
+	t.LogWithStepThreshold(0)
+}
+
+// LogIfLong dumps logs if the duration is longer than threshold
+func (t *Trace) LogIfLong(threshold time.Duration) {
+	if time.Since(t.startTime) > threshold {
+		stepThreshold := threshold / time.Duration(len(t.steps)+1)
+		t.LogWithStepThreshold(stepThreshold)
+	}
+}
+
+// LogWithStepThreshold only dumps step whose duration is longer than step threshold
+func (t *Trace) LogWithStepThreshold(threshold time.Duration) {
+	msg, fs := t.logInfo(threshold)
+	if t.lg != nil {
+		t.lg.Info(msg, fs...)
+	}
+}
+
+func (t *Trace) logInfo(threshold time.Duration) (string, []zap.Field) {
+	endTime := time.Now()
+	totalDuration := endTime.Sub(t.startTime)
+	traceNum := rand.Int31()
+	msg := fmt.Sprintf("trace[%d] %s", traceNum, t.operation)
+
+	var steps []string
+	lastStepTime := t.startTime
+	for _, step := range t.steps {
+		stepDuration := step.time.Sub(lastStepTime)
+		if stepDuration > threshold {
+			steps = append(steps, fmt.Sprintf("trace[%d] '%v' %s (duration: %v)",
+				traceNum, step.msg, writeFields(step.fields), stepDuration))
+		}
+		lastStepTime = step.time
+	}
+
+	fs := []zap.Field{zap.String("detail", writeFields(t.fields)),
+		zap.Duration("duration", totalDuration),
+		zap.Time("start", t.startTime),
+		zap.Time("end", endTime),
+		zap.Strings("steps", steps)}
+	return msg, fs
+}

pkg/traceutil/trace_test.go

@@ -0,0 +1,262 @@
+// Copyright 2019 The etcd Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package traceutil
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"go.uber.org/zap"
+)
+
+func TestGet(t *testing.T) {
+	traceForTest := &Trace{operation: "test"}
+	tests := []struct {
+		name        string
+		inputCtx    context.Context
+		outputTrace *Trace
+	}{
+		{
+			name:        "When the context does not have trace",
+			inputCtx:    context.TODO(),
+			outputTrace: TODO(),
+		},
+		{
+			name:        "When the context has trace",
+			inputCtx:    context.WithValue(context.Background(), TraceKey, traceForTest),
+			outputTrace: traceForTest,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			trace := Get(tt.inputCtx)
+			if trace == nil {
+				t.Errorf("Expected %v; Got nil", tt.outputTrace)
+			}
+			if trace.operation != tt.outputTrace.operation {
+				t.Errorf("Expected %v; Got %v", tt.outputTrace, trace)
+			}
+		})
+	}
+}
+
+func TestCreate(t *testing.T) {
+	var (
+		op     = "Test"
+		steps  = []string{"Step1, Step2"}
+		fields = []Field{
+			{"traceKey1", "traceValue1"},
+			{"traceKey2", "traceValue2"},
+		}
+		stepFields = []Field{
+			{"stepKey1", "stepValue2"},
+			{"stepKey2", "stepValue2"},
+		}
+	)
+
+	trace := New(op, nil, fields[0], fields[1])
+	if trace.operation != op {
+		t.Errorf("Expected %v; Got %v", op, trace.operation)
+	}
+	for i, f := range trace.fields {
+		if f.Key != fields[i].Key {
+			t.Errorf("Expected %v; Got %v", fields[i].Key, f.Key)
+		}
+		if f.Value != fields[i].Value {
+			t.Errorf("Expected %v; Got %v", fields[i].Value, f.Value)
+		}
+	}
+
+	for i, v := range steps {
+		trace.Step(v, stepFields[i])
+	}
+
+	for i, v := range trace.steps {
+		if steps[i] != v.msg {
+			t.Errorf("Expected %v; Got %v", steps[i], v.msg)
+		}
+		if stepFields[i].Key != v.fields[0].Key {
+			t.Errorf("Expected %v; Got %v", stepFields[i].Key, v.fields[0].Key)
+		}
+		if stepFields[i].Value != v.fields[0].Value {
+			t.Errorf("Expected %v; Got %v", stepFields[i].Value, v.fields[0].Value)
+		}
+	}
+}
+
+func TestLog(t *testing.T) {
+	tests := []struct {
+		name        string
+		trace       *Trace
+		fields      []Field
+		expectedMsg []string
+	}{
+		{
+			name: "When dump all logs",
+			trace: &Trace{
+				operation: "Test",
+				startTime: time.Now().Add(-100 * time.Millisecond),
+				steps: []step{
+					{time: time.Now().Add(-80 * time.Millisecond), msg: "msg1"},
+					{time: time.Now().Add(-50 * time.Millisecond), msg: "msg2"},
+				},
+			},
+			expectedMsg: []string{
+				"msg1", "msg2",
+			},
+		},
+		{
+			name: "When trace has fields",
+			trace: &Trace{
+				operation: "Test",
+				startTime: time.Now().Add(-100 * time.Millisecond),
+				steps: []step{
+					{
+						time:   time.Now().Add(-80 * time.Millisecond),
+						msg:    "msg1",
+						fields: []Field{{"stepKey1", "stepValue1"}},
+					},
+					{
+						time:   time.Now().Add(-50 * time.Millisecond),
+						msg:    "msg2",
+						fields: []Field{{"stepKey2", "stepValue2"}},
+					},
+				},
+			},
+			fields: []Field{
+				{"traceKey1", "traceValue1"},
+				{"count", 1},
+			},
+			expectedMsg: []string{
+				"Test",
+				"msg1", "msg2",
+				"traceKey1:traceValue1", "count:1",
+				"stepKey1:stepValue1", "stepKey2:stepValue2",
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			logPath := filepath.Join(os.TempDir(), fmt.Sprintf("test-log-%d", time.Now().UnixNano()))
+			defer os.RemoveAll(logPath)
+
+			lcfg := zap.NewProductionConfig()
+			lcfg.OutputPaths = []string{logPath}
+			lcfg.ErrorOutputPaths = []string{logPath}
+			lg, _ := lcfg.Build()
+
+			for _, f := range tt.fields {
+				tt.trace.AddField(f)
+			}
+			tt.trace.lg = lg
+			tt.trace.Log()
+			data, err := ioutil.ReadFile(logPath)
+			if err != nil {
+				t.Fatal(err)
+			}
+
+			for _, msg := range tt.expectedMsg {
+				if !bytes.Contains(data, []byte(msg)) {
+					t.Errorf("Expected to find %v in log", msg)
+				}
+			}
+		})
+	}
+}
+
+func TestLogIfLong(t *testing.T) {
+	tests := []struct {
+		name        string
+		threshold   time.Duration
+		trace       *Trace
+		expectedMsg []string
+	}{
+		{
+			name:      "When the duration is smaller than threshold",
+			threshold: time.Duration(200 * time.Millisecond),
+			trace: &Trace{
+				operation: "Test",
+				startTime: time.Now().Add(-100 * time.Millisecond),
+				steps: []step{
+					{time: time.Now().Add(-50 * time.Millisecond), msg: "msg1"},
+					{time: time.Now(), msg: "msg2"},
+				},
+			},
+			expectedMsg: []string{},
+		},
+		{
+			name:      "When the duration is longer than threshold",
+			threshold: time.Duration(50 * time.Millisecond),
+			trace: &Trace{
+				operation: "Test",
+				startTime: time.Now().Add(-100 * time.Millisecond),
+				steps: []step{
+					{time: time.Now().Add(-50 * time.Millisecond), msg: "msg1"},
+					{time: time.Now(), msg: "msg2"},
+				},
+			},
+			expectedMsg: []string{
+				"msg1", "msg2",
+			},
+		},
+		{
+			name:      "When not all steps are longer than step threshold",
+			threshold: time.Duration(50 * time.Millisecond),
+			trace: &Trace{
+				operation: "Test",
+				startTime: time.Now().Add(-100 * time.Millisecond),
+				steps: []step{
+					{time: time.Now(), msg: "msg1"},
+					{time: time.Now(), msg: "msg2"},
+				},
+			},
+			expectedMsg: []string{
+				"msg1",
+			},
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			logPath := filepath.Join(os.TempDir(), fmt.Sprintf("test-log-%d", time.Now().UnixNano()))
+			defer os.RemoveAll(logPath)
+
+			lcfg := zap.NewProductionConfig()
+			lcfg.OutputPaths = []string{logPath}
+			lcfg.ErrorOutputPaths = []string{logPath}
+			lg, _ := lcfg.Build()
+
+			tt.trace.lg = lg
+			tt.trace.LogIfLong(tt.threshold)
+			data, err := ioutil.ReadFile(logPath)
+			if err != nil {
+				t.Fatal(err)
+			}
+			for _, msg := range tt.expectedMsg {
+				if !bytes.Contains(data, []byte(msg)) {
+					t.Errorf("Expected to find %v in log", msg)
+				}
+			}
+		})
+	}
+}

scripts/build-binary

@@ -57,6 +57,12 @@ function main {
 	cd release
 	setup_env "${PROJ}" "${VER}"
 
+	tarcmd=tar
+	if [[ $(go env GOOS) == "darwin" ]]; then
+		echo "Please use linux machine for release builds."
+		exit 1
+	fi
+
 	for os in darwin windows linux; do
 		export GOOS=${os}
 		TARGET_ARCHS=("amd64")
@@ -78,7 +84,7 @@ function main {
 			package "${TARGET}" "${PROJ}"
 
 			if [ ${GOOS} == "linux" ]; then
-				tar cfz "${TARGET}.tar.gz" "${TARGET}"
+				${tarcmd} cfz "${TARGET}.tar.gz" "${TARGET}"
 				echo "Wrote release/${TARGET}.tar.gz"
 			else
 				zip -qr "${TARGET}.zip" "${TARGET}"

scripts/release

@@ -5,7 +5,7 @@ set -o nounset
 set -o pipefail
 
 help() {
-  echo "$(basename $0) [version]"
+  echo "$(basename "$0") [version]"
   echo "Release etcd using the same approach as the etcd-release-runbook (https://goo.gl/Gxwysq)"
   echo ""
   echo "WARNING: This does not perform the 'Add API capabilities', 'Performance testing' "
@@ -51,30 +51,33 @@ main() {
   if [ ! -d "${reldir}/etcd" ]; then
     mkdir -p "${reldir}"
     cd "${reldir}"
-    git clone git@github.com:etcd-io/etcd.git --branch "${BRANCH}"
+    git clone https://github.com/etcd-io/etcd.git --branch "${BRANCH}"
   fi
   cd "${reldir}/etcd"
 
   # If a release version tag already exists, use it.
-  local remote_tag_exists=$(git ls-remote origin "refs/tags/${RELEASE_VERSION}" | grep -c "${RELEASE_VERSION}")
+  local remote_tag_exists
-  if [ ${remote_tag_exists} -gt 0 ]; then
+  remote_tag_exists=$(git ls-remote origin "refs/tags/${RELEASE_VERSION}" | grep -c "${RELEASE_VERSION}")
+  if [ "${remote_tag_exists}" -gt 0 ]; then
     echo "Release version tag exists on remote. Checking out refs/tags/${RELEASE_VERSION}"
     git checkout -q "tags/${RELEASE_VERSION}"
   fi
 
   # Check go version.
   # download "yq" from https://github.com/mikefarah/yq
-  local go_version="go$(yq read .travis.yml "go[0]")"
+  local go_version current_go_version
-  local current_go_version=$(go version | awk '{ print $3 }')
+  go_version="go$(yq read .travis.yml "go[0]")"
+  current_go_version=$(go version | awk '{ print $3 }')
   if [[ "${current_go_version}" != "${go_version}" ]]; then
     echo "Current go version is ${current_go_version}, but etcd ${RELEASE_VERSION} requires ${go_version} (see .travis.yml)."
     exit 1
   fi
 
   # If the release tag does not already exist remotely, create it.
-  if [ ${remote_tag_exists} -eq 0 ]; then
+  if [ "${remote_tag_exists}" -eq 0 ]; then
     # Bump version/version.go to release version.
-    local source_version=$(egrep "\s+Version\s*=" version/version.go | sed -e "s/.*\"\(.*\)\".*/\1/g")
+    local source_version
+    source_version=$(grep -E "\s+Version\s*=" version/version.go | sed -e "s/.*\"\(.*\)\".*/\1/g")
     if [[ "${source_version}" != "${VERSION}" ]]; then
       source_minor_version=$(echo "${source_version}" | cut -d. -f 1-2)
       if [[ "${source_minor_version}" != "${MINOR_VERSION}" ]]; then
@@ -87,13 +90,14 @@ main() {
 
     echo "Building etcd and checking --version output"
     ./build
-    local etcd_version=$(bin/etcd --version | grep "etcd Version" | awk '{ print $3 }')
+    local etcd_version
+    etcd_version=$(bin/etcd --version | grep "etcd Version" | awk '{ print $3 }')
     if [[ "${etcd_version}" != "${VERSION}" ]]; then
       echo "Wrong etcd version in version/version.go. Expected ${etcd_version} but got ${VERSION}. Aborting."
       exit 1
     fi
 
-    if [[ ! -z $(git status -s) ]]; then
+    if [[ -n $(git status -s) ]]; then
       echo "Committing version/version.go update."
       git add version/version.go
       git commit -m "version: bump up to ${VERSION}"
@@ -101,22 +105,36 @@ main() {
     fi
 
     # Push the version change if it's not already been pushed.
-    if [ $(git rev-list --count "origin/${BRANCH}..${BRANCH}") -gt 0 ]; then
+    if [ "$(git rev-list --count "origin/${BRANCH}..${BRANCH}")" -gt 0 ]; then
-      read -p "Push version bump up to ${VERSION} to github.com/etcd-io/etcd [y/N]? " confirm
+      read -p "Push version bump up to ${VERSION} to github.com/etcd-io/etcd [y/N]? " -r confirm
       [[ "${confirm,,}" == "y" ]] || exit 1
       git push
     fi
 
     # Tag release.
-    if [ $(git tag --list | grep -c "${RELEASE_VERSION}") -gt 0 ]; then
+    if [ "$(git tag --list | grep -c "${RELEASE_VERSION}")" -gt 0 ]; then
       echo "Skipping tag step. git tag ${RELEASE_VERSION} already exists."
     else
       echo "Tagging release..."
       git tag --local-user "${KEYID}" --sign "${RELEASE_VERSION}" --message "${RELEASE_VERSION}"
     fi
 
+    # Verify the latest commit has the version tag
+    local tag="$(git describe --exact-match HEAD)"
+    if [ "${tag}" != "${RELEASE_VERSION}" ]; then
+      echo "Error: Expected HEAD to be tagged with ${RELEASE_VERSION}, but 'git describe --exact-match HEAD' reported: ${tag}"
+      exit 1
+    fi
+
+    # Verify the version tag is on the right branch
+    local branch=$(git branch --contains "${RELEASE_VERSION}")
+    if [ "${branch}" != "release-${MINOR_VERSION}" ]; then
+      echo "Error: Git tag ${RELEASE_VERSION} should be on branch release-${MINOR_VERSION} but is on ${branch}"
+      exit 1
+    fi
+
     # Push the tag change if it's not already been pushed.
-    read -p "Push etcd ${RELEASE_VERSION} tag [y/N]? " confirm
+    read -p "Push etcd ${RELEASE_VERSION} tag [y/N]? " -r confirm
     [[ "${confirm,,}" == "y" ]] || exit 1
     git push origin "tags/${RELEASE_VERSION}"
   fi
@@ -137,18 +155,18 @@ main() {
   fi
 
   # Sanity checks.
-  ./release/etcd-${RELEASE_VERSION}-$(go env GOOS)-amd64/etcd --version | grep -q "etcd Version: ${VERSION}" || true
+  "./release/etcd-${RELEASE_VERSION}-$(go env GOOS)-amd64/etcd" --version | grep -q "etcd Version: ${VERSION}" || true
-  ./release/etcd-${RELEASE_VERSION}-$(go env GOOS)-amd64/etcdctl version | grep -q "etcdctl version: ${VERSION}" || true
+  "./release/etcd-${RELEASE_VERSION}-$(go env GOOS)-amd64/etcdctl" version | grep -q "etcdctl version: ${VERSION}" || true
 
-  # Generate SHA256SUM
+  # Generate SHA256SUMS
-  echo -e "Generating sha256sum of release artifacts.\n"
+  echo -e "Generating sha256sums of release artifacts.\n"
   pushd ./release
-  ls . | grep -E '\.tar.gz$|\.zip$' | xargs shasum -a 256 > ./SHA256SUM
+  ls . | grep -E '\.tar.gz$|\.zip$' | xargs shasum -a 256 > ./SHA256SUMS
   popd
-  if [ -s ./release/SHA256SUM ]; then
+  if [ -s ./release/SHA256SUMS ]; then
-    cat ./release/SHA256SUM
+    cat ./release/SHA256SUMS
   else
-    echo "sha256sum is not valid. Aborting."
+    echo "sha256sums is not valid. Aborting."
     exit 1
   fi
 
@@ -156,44 +174,67 @@ main() {
   if [ "${NO_UPLOAD}" == 1 ]; then
     echo "Skipping artifact upload to gs://etcd. --no-upload flat is set."
   else
-    read -p "Upload etcd ${RELEASE_VERSION} release artifacts to gs://etcd [y/N]? " confirm
+    read -p "Upload etcd ${RELEASE_VERSION} release artifacts to gs://etcd [y/N]? " -r confirm
     [[ "${confirm,,}" == "y" ]] || exit 1
-    gsutil -m cp ./release/SHA256SUM gs://etcd/${RELEASE_VERSION}/
+    gsutil -m cp ./release/SHA256SUMS "gs://etcd/${RELEASE_VERSION}/"
-    gsutil -m cp ./release/*.zip gs://etcd/${RELEASE_VERSION}/
+    gsutil -m cp ./release/*.zip "gs://etcd/${RELEASE_VERSION}/"
-    gsutil -m cp ./release/*.tar.gz gs://etcd/${RELEASE_VERSION}/
+    gsutil -m cp ./release/*.tar.gz "gs://etcd/${RELEASE_VERSION}/"
-    gsutil -m acl ch -u allUsers:R -r gs://etcd/${RELEASE_VERSION}/
+    gsutil -m acl ch -u allUsers:R -r "gs://etcd/${RELEASE_VERSION}/"
   fi
 
   # Push images.
   if [ "${NO_DOCKER_PUSH}" == 1 ]; then
     echo "Skipping docker push. --no-docker-push flat is set."
   else
-    read -p "Publish etcd ${RELEASE_VERSION} docker images to quay.io [y/N]? " confirm
+    read -p "Publish etcd ${RELEASE_VERSION} docker images to quay.io [y/N]? " -r confirm
     [[ "${confirm,,}" == "y" ]] || exit 1
+    # shellcheck disable=SC2034
     for i in {1..5}; do
       docker login quay.io && break
       echo "login failed, retrying"
     done
     gcloud docker -- login -u _json_key -p "$(cat /etc/gcp-key-etcd-development.json)" https://gcr.io
 
-    echo "Pushing container images to quay.io" ${RELEASE_VERSION}
+    echo "Pushing container images to quay.io ${RELEASE_VERSION}"
-    docker push quay.io/coreos/etcd:${RELEASE_VERSION}
+    docker push "quay.io/coreos/etcd:${RELEASE_VERSION}"
 
-    echo "Pushing container images to gcr.io" ${RELEASE_VERSION}
+    echo "Pushing container images to gcr.io ${RELEASE_VERSION}"
-    gcloud docker -- push gcr.io/etcd-development/etcd:${RELEASE_VERSION}
+    gcloud docker -- push "gcr.io/etcd-development/etcd:${RELEASE_VERSION}"
 
     for TARGET_ARCH in "-arm64" "-ppc64le"; do
-      echo "Pushing container images to quay.io" ${RELEASE_VERSION}${TARGET_ARCH}
+      echo "Pushing container images to quay.io ${RELEASE_VERSION}${TARGET_ARCH}"
-      docker push quay.io/coreos/etcd:${RELEASE_VERSION}${TARGET_ARCH}
+      docker push "quay.io/coreos/etcd:${RELEASE_VERSION}${TARGET_ARCH}"
 
-      echo "Pushing container images to gcr.io" ${RELEASE_VERSION}${TARGET_ARCH}
+      echo "Pushing container images to gcr.io ${RELEASE_VERSION}${TARGET_ARCH}"
-      gcloud docker -- push gcr.io/etcd-development/etcd:${RELEASE_VERSION}${TARGET_ARCH}
+      gcloud docker -- push "gcr.io/etcd-development/etcd:${RELEASE_VERSION}${TARGET_ARCH}"
     done
 
     echo "Setting permissions using gsutil..."
     gsutil -m acl ch -u allUsers:R -r gs://artifacts.etcd-development.appspot.com
   fi
 
+  ### Release validation
+  mkdir -p downloads
+
+  # Check image versions
+  for IMAGE in "quay.io/coreos/etcd:${RELEASE_VERSION}" "gcr.io/etcd-development/etcd:${RELEASE_VERSION}"; do
+    local image_version=$(docker run --rm "${IMAGE}" etcd --version | grep "etcd Version" | awk -F: '{print $2}' | tr -d '[:space:]')
+    if [ "${image_version}" != "${VERSION}" ]; then
+      echo "Check failed: etcd --version output for ${IMAGE} is incorrect: ${image_version}"
+      exit 1
+    fi
+  done
+
+  # Check gsutil binary versions
+  local BINARY_TGZ="etcd-${RELEASE_VERSION}-$(go env GOOS)-amd64.tar.gz"
+  gsutil cp "gs://etcd/${RELEASE_VERSION}/${BINARY_TGZ}" downloads
+  tar -zx -C downloads -f "downloads/${BINARY_TGZ}"
+  local binary_version=$("./downloads/etcd-${RELEASE_VERSION}-$(go env GOOS)-amd64/etcd" --version | grep "etcd Version" | awk -F: '{print $2}' | tr -d '[:space:]')
+  if [ "${binary_version}" != "${VERSION}" ]; then
+    echo "Check failed: etcd --version output for ${BINARY_TGZ} from gs://etcd/${RELEASE_VERSION} is incorrect: ${binary_version}"
+    exit 1
+  fi
+
   # TODO: signing process
   echo ""
   echo "WARNING: The release has not been signed and published to github. This must be done manually."
@@ -234,4 +275,4 @@ if [[ ! $# -eq 1 ]]; then
   exit 1
 fi
 
-main $1
+main "$1"

tests/e2e/metrics_test.go

@@ -39,7 +39,6 @@ func metricsTest(cx ctlCtx) {
 	if err := ctlV3Put(cx, "k", "v", ""); err != nil {
 		cx.t.Fatal(err)
 	}
-	ver := version.Version
 
 	i := 0
 	for _, test := range []struct {
@@ -49,7 +48,7 @@ func metricsTest(cx ctlCtx) {
 		{"/metrics", fmt.Sprintf("etcd_debugging_mvcc_keys_total 1")},
 		{"/metrics", fmt.Sprintf("etcd_mvcc_delete_total 3")},
 		{"/metrics", fmt.Sprintf(`etcd_server_version{server_version="%s"} 1`, version.Version)},
-		{"/metrics", fmt.Sprintf(`etcd_cluster_version{cluster_version="%s"} 1`, ver)},
+		{"/metrics", fmt.Sprintf(`etcd_cluster_version{cluster_version="%s"} 1`, version.Cluster(version.Version))},
 		{"/health", `{"health":"true"}`},
 	} {
 		i++

tools/benchmark/cmd/mvcc-put.go

@@ -23,6 +23,7 @@ import (
 
 	"go.etcd.io/etcd/lease"
 	"go.etcd.io/etcd/pkg/report"
+	"go.etcd.io/etcd/pkg/traceutil"
 
 	"github.com/spf13/cobra"
 )
@@ -114,7 +115,7 @@ func mvccPutFunc(cmd *cobra.Command, args []string) {
 		for i := 0; i < mvccTotalRequests; i++ {
 			st := time.Now()
 
-			tw := s.Write()
+			tw := s.Write(traceutil.TODO())
 			for j := i; j < i+nrTxnOps; j++ {
 				tw.Put(keys[j], vals[j], lease.NoLease)
 			}

vendor/google.golang.org/grpc/internal/transport/http2_server.go

@@ -138,7 +138,10 @@ func newHTTP2Server(conn net.Conn, config *ServerConfig) (_ ServerTransport, err
 	}
 	framer := newFramer(conn, writeBufSize, readBufSize, maxHeaderListSize)
 	// Send initial settings as connection preface to client.
-	var isettings []http2.Setting
+	isettings := []http2.Setting{{
+		ID:  http2.SettingMaxFrameSize,
+		Val: http2MaxFrameLen,
+	}}
 	// TODO(zhaoq): Have a better way to signal "no limit" because 0 is
 	// permitted in the HTTP2 spec.
 	maxStreams := config.MaxStreams

vendor/google.golang.org/grpc/internal/transport/http_util.go

@@ -667,6 +667,7 @@ func newFramer(conn net.Conn, writeBufferSize, readBufferSize int, maxHeaderList
 		writer: w,
 		fr:     http2.NewFramer(w, r),
 	}
+	f.fr.SetMaxReadFrameSize(http2MaxFrameLen)
 	// Opt-in to Frame reuse API on framer to reduce garbage.
 	// Frames aren't safe to read from after a subsequent call to ReadFrame.
 	f.fr.SetReuseFrames()

vendor/google.golang.org/grpc/version.go

@@ -19,4 +19,4 @@
 package grpc
 
 // Version is the current grpc version.
-const Version = "1.23.0"
+const Version = "1.23.1"

version/version.go

@@ -26,7 +26,7 @@ import (
 var (
 	// MinClusterVersion is the min cluster version this etcd binary is compatible with.
 	MinClusterVersion = "3.0.0"
-	Version           = "3.4.0"
+	Version           = "3.4.3"
 	APIVersion        = "unknown"
 
 	// Git SHA Value will be set during build