How to add volumeMount for alertmanager and prometheus container

[shangjin92]

What did you do?
I want to add volumeMount for alertmanager and prometheus container to change timezone. Because the UTC timezone is not friendly to me. While I edit alertmanager statefulset like this.

kubectl edit StatefulSet alertmanager-prometheus-operator-alertmanager -n monitor

volumeMounts:
- name: host-time
   mountPath: /etc/localtime
   readOnly: true

volumes:
- name: host-time
        hostPath:
          path: /etc/localtime

But it reported 'error: statefulsets.apps "alertmanager-prometheus-operator-alertmanager" is invalid'. Is there any way to add volumeMount to slove this error?

What did you expect to see?
I want to add volumeMount to alertmanager and prometheus container, to change timezone from UTC to GMT.

Environment

• Prometheus Operator version:
  v0.25.0

• Kubernetes version information:
  v1.11.2

[brancz]

I see now, sorry the two issues are related, host path volumes are dangerous though, I would prefer any other way really than that. The problem however is not really that we don't allow it, but Prometheus and Alertmanager fundamentally don't support timezone specific behavior, so even if you had the hostpath volume it would change nothing.

[shangjin92]

I see now, sorry the two issues are related, host path volumes are dangerous though, I would prefer any other way really than that. The problem however is not really that we don't allow it, but Prometheus and Alertmanager fundamentally don't support timezone specific behavior, so even if you had the hostpath volume it would change nothing.

All right, I get it. Thank you very much.