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cmd/containerboot: switch to IPN bus monitoring instead of polling.

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We still have to shell out to `tailscale up` because the container image's
API includes "arbitrary flags to tailscale up", unfortunately. But this
should still speed up startup a little, and also enables k8s-bound containers
to update their device information as new netmap updates come in.

Fixes #6657

Signed-off-by: David Anderson <danderson@tailscale.com>
This commit is contained in:
David Anderson
2022-12-07 12:29:45 -08:00
committed by Dave Anderson
parent 55e0512a05
commit 1b65630e83
3 changed files with 268 additions and 188 deletions
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10
cmd/containerboot/kube.go
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@ -22,6 +22,7 @@ import (
"strings"
"time"
"tailscale.com/tailcfg"
"tailscale.com/util/multierr"
)
@ -140,9 +141,9 @@ func findKeyInKubeSecret(ctx context.Context, secretName string) (string, error)
return "", nil
}
// storeDeviceID writes deviceID into the "device_id" data field of
// the kube secret secretName.
func storeDeviceID(ctx context.Context, secretName, deviceID string) error {
// storeDeviceInfo writes deviceID into the "device_id" data field of the kube
// secret secretName.
func storeDeviceInfo(ctx context.Context, secretName string, deviceID tailcfg.StableNodeID, fqdn string) error {
// First check if the secret exists at all. Even if running on
// kubernetes, we do not necessarily store state in a k8s secret.
req, err := http.NewRequest("GET", fmt.Sprintf("/api/v1/namespaces/%s/secrets/%s", kubeNamespace, secretName), nil)
@ -161,7 +162,8 @@ func storeDeviceID(ctx context.Context, secretName, deviceID string) error {
m := map[string]map[string]string{
"stringData": {
"device_id": deviceID,
"device_id": string(deviceID),
"device_fqdn": fqdn,
},
}
var b bytes.Buffer