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Tom Proctor 74d4652144 cmd/{containerboot,k8s-operator},k8s-operator: new options to expose user metrics (#14035) ... containerboot: Adds 3 new environment variables for containerboot, `TS_LOCAL_ADDR_PORT` (default `"${POD_IP}:9002"`), `TS_METRICS_ENABLED` (default `false`), and `TS_DEBUG_ADDR_PORT` (default `""`), to configure metrics and debug endpoints. In a follow-up PR, the health check endpoint will be updated to use the `TS_LOCAL_ADDR_PORT` if `TS_HEALTHCHECK_ADDR_PORT` hasn't been set. Users previously only had access to internal debug metrics (which are unstable and not recommended) via passing the `--debug` flag to tailscaled, but can now set `TS_METRICS_ENABLED=true` to expose the stable metrics documented at https://tailscale.com/kb/1482/client-metrics at `/metrics` on the addr/port specified by `TS_LOCAL_ADDR_PORT`. Users can also now configure a debug endpoint more directly via the `TS_DEBUG_ADDR_PORT` environment variable. This is not recommended for production use, but exposes an internal set of debug metrics and pprof endpoints. operator: The `ProxyClass` CRD's `.spec.metrics.enable` field now enables serving the stable user metrics documented at https://tailscale.com/kb/1482/client-metrics at `/metrics` on the same "metrics" container port that debug metrics were previously served on. To smooth the transition for anyone relying on the way the operator previously consumed this field, we also _temporarily_ serve tailscaled's internal debug metrics on the same `/debug/metrics` path as before, until 1.82.0 when debug metrics will be turned off by default even if `.spec.metrics.enable` is set. At that point, anyone who wishes to continue using the internal debug metrics (not recommended) will need to set the new `ProxyClass` field `.spec.statefulSet.pod.tailscaleContainer.debug.enable`. Users who wish to opt out of the transitional behaviour, where enabling `.spec.metrics.enable` also enables debug metrics, can set `.spec.statefulSet.pod.tailscaleContainer.debug.enable` to false (recommended). Separately but related, the operator will no longer specify a host port for the "metrics" container port definition. This caused scheduling conflicts when k8s needs to schedule more than one proxy per node, and was not necessary for allowing the pod's port to be exposed to prometheus scrapers. Updates #11292 --------- Co-authored-by: Kristoffer Dalby <kristoffer@tailscale.com> Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>		2 days ago
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forwarding.go	cmd/containerboot,util/linuxfw: create a SNAT rule for dst/src only once, clean up if needed (#13658)	2 months ago
healthz.go	cmd/{containerboot,k8s-operator},k8s-operator: new options to expose user metrics (#14035)	2 days ago
kube.go	kube/{kubeapi,kubeclient},ipn/store/kubestore,cmd/{containerboot,k8s-operator}: emit kube store Events (#14112)	5 days ago
kube_test.go	kube,cmd/{k8s-operator,containerboot},envknob,ipn/store/kubestore,*/depaware.txt: rename packages (#13418)	3 months ago
main.go	cmd/{containerboot,k8s-operator},k8s-operator: new options to expose user metrics (#14035)	2 days ago
main_test.go	cmd/containerboot,cmd/k8s-operator: enable IPv6 for fqdn egress proxies (#12577)	5 months ago
metrics.go	cmd/{containerboot,k8s-operator},k8s-operator: new options to expose user metrics (#14035)	2 days ago
serve.go	cmd/containerboot: split main.go (#13517)	2 months ago
services.go	kube/{kubeapi,kubeclient},ipn/store/kubestore,cmd/{containerboot,k8s-operator}: emit kube store Events (#14112)	5 days ago
services_test.go	cmd/containerboot,kube,util/linuxfw: configure kube egress proxies to route to 1+ tailnet targets (#13531)	2 months ago
settings.go	cmd/{containerboot,k8s-operator},k8s-operator: new options to expose user metrics (#14035)	2 days ago
tailscaled.go	cmd/{containerboot,k8s-operator},k8s-operator: new options to expose user metrics (#14035)	2 days ago
test_tailscale.sh	cmd/containerboot: make a tests table, add more tests.	2 years ago
test_tailscaled.sh	cmd/containerboot: avoid leaking bash scripts after test runs	1 year ago