allowed override vmagent volume

[wenerme]

trafficstars

want to prevent vmagent data lost by mount

  volumes:
  - name: persistent-queue-data
    hostPath:
      path: /data/var/vmagent/persistent-queue-data

operator should merge volume by name.

https://github.com/VictoriaMetrics/operator/blob/10a53e58c8dcb388e7dda62db836513fb0618e90/controllers/factory/vmagent.go#L246-L251

[f41gh7]

I think, that it can be achieved with statefulset instead of deployment. Deployment in case of persistent volume claim mount must has upgradeStrategy: ReCreate and replicas: 1.

Related issue https://github.com/VictoriaMetrics/operator/issues/219

I hope, soon it will be added.

[wenerme]

Some provider seems do not need to recreate, like openebs zfs, allowed multi mount.

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: openebs-local-zfs-testing-shared
parameters:
  # allowed multi mount
  shared: "yes"

[f41gh7]

FYI, v0.25.0 release supports StatefulMode for VMAgent. Will update docs soon.

[hagen1778]

@f41gh7 can we have docs updated accordingly?

[f41gh7]

Added an example https://github.com/VictoriaMetrics/operator/blob/master/config/examples/vmagent_stateful_with_sharding.yaml