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doc: Note to fully populate the pool of PVs before checking if the cache is effective (#1655)

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Yusuke Kuoka 2022-07-17 19:44:07 +09:00 committed by GitHub
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@ -1447,6 +1447,8 @@ reused across runner pods to retain `/var/lib/docker`.
_Be sure to add the volume mount to the container that is supposed to run the docker daemon._
_Be sure to trigger several workflow runs before checking if the cache is effective. ARC requires an `Available` PV to be reused for the new runner pod, and a PV becomes `Available` only after some time after the previous runner pod that was using the PV terminated. See [the related discussion](https://github.com/actions-runner-controller/actions-runner-controller/discussions/1605)._
By default, ARC creates a sidecar container named `docker` within the runner pod for running the docker daemon. In that case,
it's where you need the volume mount so that the manifest looks like:
@ -1482,6 +1484,8 @@ With `dockerdWithinRunnerContainer: true`, you need to add the volume mount to t
The module cache dir can be customized by setting `GOMOD_CACHE` so by setting it to somewhere under `$HOME/.cache`,
we can have a single PV to host both build and module cache, which might improve Go module downloading and building time.
_Be sure to trigger several workflow runs before checking if the cache is effective. ARC requires an `Available` PV to be reused for the new runner pod, and a PV becomes `Available` only after some time after the previous runner pod that was using the PV terminated. See [the related discussion](https://github.com/actions-runner-controller/actions-runner-controller/discussions/1605)._
```yaml
kind: RunnerSet
metadata: