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cmd/containerboot: serve health on local endpoint (#14246 )

* cmd/containerboot: serve health on local endpoint

We introduced stable (user) metrics in #14035, and `TS_LOCAL_ADDR_PORT`
with it. Rather than requiring users to specify a new addr/port
combination for each new local endpoint they want the container to
serve, this combines the health check endpoint onto the local addr/port
used by metrics if `TS_ENABLE_HEALTH_CHECK` is used instead of
`TS_HEALTHCHECK_ADDR_PORT`.

`TS_LOCAL_ADDR_PORT` now defaults to binding to all interfaces on 9002
so that it works more seamlessly and with less configuration in
environments other than Kubernetes, where the operator always overrides
the default anyway. In particular, listening on localhost would not be
accessible from outside the container, and many scripted container
environments do not know the IP address of the container before it's
started. Listening on all interfaces allows users to just set one env
var (`TS_ENABLE_METRICS` or `TS_ENABLE_HEALTH_CHECK`) to get a fully
functioning local endpoint they can query from outside the container.

Updates #14035, #12898

Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>

2024-12-02 12:18:09 +00:00

forwarding.go

cmd/containerboot,util/linuxfw: create a SNAT rule for dst/src only once, clean up if needed (#13658 )

2024-10-03 20:15:00 +01:00

healthz.go

cmd/containerboot: serve health on local endpoint (#14246 )

2024-12-02 12:18:09 +00:00

kube_test.go

kube,cmd/{k8s-operator,containerboot},envknob,ipn/store/kubestore,*/depaware.txt: rename packages (#13418 )

2024-09-08 20:57:29 +01:00

kube.go

kube/{kubeapi,kubeclient},ipn/store/kubestore,cmd/{containerboot,k8s-operator}: emit kube store Events (#14112 )