The heartbeat cronjob specified `restartPolicy: OnFailure`. In cases
where failure was non-transient, such as if a cluster did not have
internet access, this would continuously restart and fail.
Change the heartbeat cronjob to `restartPolicy: Never`, as a failed job
has no user-facing impact.
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
The `_resources.yaml` partial hard-coded indentation, making it
cumbersome to use it in contexts that did not have a specific
indentation level.
Remove indentation from `_resources.yaml`, and instead specify required
indentation at the call site via `nindent`.
Fixes#3119
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
`linkerd check`, the web dashboard, and Grafana all perform version
checks to validate Linkerd is up to date. It's common for users to
seldom execute these codepaths. This makes it difficult to identify what
versions of Linkerd are currently in use and what environments it is
being run in, which helps prioritize testing and backports.
Introduce a `heartbeat` CronJob to the default Linkerd install. The
cronjob executes every 24 hours, starting from 5 minutes after
`linkerd install` is run.
Example check URL:
https://versioncheck.linkerd.io/version.json?
install-time=1562761177&
k8s-version=v1.15.0&
meshed-pods=8&
rps=3&
source=heartbeat&
uuid=cc4bb700-3314-426a-9f0f-ec588b9df020&
version=git-b97ee9f7
Fixes#2961
Signed-off-by: Andrew Seigner <siggy@buoyant.io>
Andrew Seigner