It specifies request timeout error possibly caused by connection lost,
and print out better log for user to understand.
It handles two cases:
1. the leader cannot connect to majority of cluster.
2. the connection between follower and leader is down for a while,
and it losts proposals.
log format:
```
20:04:19 etcd3 | 2015-08-25 20:04:19.368126 E | etcdhttp: etcdserver:
request timed out, possibly due to connection lost
20:04:19 etcd3 | 2015-08-25 20:04:19.368227 E | etcdhttp: etcdserver:
request timed out, possibly due to connection lost
```
It uses heartbeat interval and election timeout to estimate the
expected request timeout.
This PR helps etcd survive under high roundtrip-time environment,
e.g., globally-deployed cluster.
PUT on the endpoint sets the GlobalDebugLevel to json level value.
The action overwrites the origianl log level setting from
users. We need to write doc to warn this.
etcdhttp will check the cluster version and update its
capability version periodically.
Any new handler's after 2.0 needs to wrap by capability handler
to ensure it is not accessable until rolling upgrade finished.
After this PR, only cluster's interface Cluster is exposed, which makes
code much cleaner. And it avoids external packages to rely on cluster
struct in the future.
Subcommits:
decouple root and security enable/disable
create root role
prefix matching
godep: bump go-etcd to include credentials
add godep for speakeasy and auth entry parsing
appropriate errors for security enable/disable
WIP adding to etcd/client all the security client methods
add guest access
minor ui return tweaks
revert client changes
respond to comments, log more security operations
fix major ensure() bug, add better UX
block recursive access
fix some boneheaded mistakes
fix integration test
last comments
fix up security_api.md
philips nits
fix docs
stub out security
further wip
Last stub before CRUD for roles
Complete role merging
start tests
add Godep for golang.org/x/crypto/bcrypt
first round of comments
add tests, remove root addition (will be added back as part of creation)
Add security checks for /v2/machines and /v2/keys
Allow non-root to determine if security is enabled, get machine list.
Responding to comments, remove multiple verbs (like /v2/security/user/foo/password)
add some prefixes to the logging
Users might want to update the peerurl of the etcd member in several cases.
For example, if the IP address of the physical machine etcd running on is
changed, user need to update the adversite-pee-rurl accordingly.
This commit makes etcd support updating the advertise-peer-url of its members.
This creates a simple ID type (wrapped around uint64) to provide for
standard serialization/deserialization to a string (i.e. base 16
encoded). This replaces strutil so now that package is removed.
