Alerting: Update legacy alerting warning

[armandgrillet]

What is this feature?

Legacy alerting was supposed to be deleted in Grafana 10.0 but we will give it a few more months, we are clarifying our warning to state that the codebase will be deleted soon.

[brendamuir]

Shall we update these statements to say "will be removed in Grafana 11"?

[gillesdemey]

Yea, @armandgrillet care to update the original PR with the correct messaging about our deprecation intentions here?

[dragoangel]

I want to note that there is no confirmation as a code (file provisioning) available for new alerting. For now it's not possible to configure it with Helm chart as result. Thank you for deciding to not depracate it now (in version 10), does it planned to add provisioning in Grafana 10 before dropping old alerting?

[gillesdemey]

Hi! You might want to take a look at the Grafana Alerting Provisioning API

[dragoangel]

Hi! You might want to take a look at the Grafana Alerting Provisioning API

Hi, thank you, I know about this api, I mentioned it when stated particular support, but it's missing provisioning support in k8s right now via configmaps/secrets, right? When you have Grafana in stateless mode fully configured in k8s cluster you need this to be in place to properly setup alerting. Deprecating alerting have this support.

[gillesdemey]

Have a look at the file provisioning, should work fine with k8s configmaps.

https://grafana.com/docs/grafana/latest/alerting/set-up/provision-alerting-resources/file-provisioning/

[dragoangel]

Have a look at the file provisioning, should work fine with k8s configmaps.

https://grafana.com/docs/grafana/latest/alerting/set-up/provision-alerting-resources/file-provisioning/

I thought existing Contact Points & Notification are deprecating in Grafana 11, now I think I did not properly understand that part. I done https://grafana.com/docs/grafana/latest/alerting/migrating-alerts/opt-in/ and all looks working as usual, sorry for confusion.

Also, I know how to add alertmanger as datasource and turn "Receive Grafana Alerts" ON to be available in Grafana Admin Alerting, but:

1. not clear how to provision this part:
2. and how to describe multiple URLs for HA setup of external alertmanger in datasource, it required to send alerts to multiple instances directly and display all alerts for sure. It is required when you use Nagstamon to check alerts at Alertmanager. Maybe dnssrv+ can be used there to solve such cases? In Contact Points I have all 3 replicas of Alertmanager in one section described for this purpose like this:

contact-prometheus-alertmanager.yaml: |-
  apiVersion: 1
  contactPoints:
    - orgId: 1
      name: prometheus-alertmanager
      receivers:
      {{- if gt ( .Values.alertmanager.alertmanagerSpec.replicas | int ) 1 }}
      {{ range $i, $e := until ( .Values.alertmanager.alertmanagerSpec.replicas | int ) }}
        - uid: prometheus-alertmanager-{{$i}}
          type: prometheus-alertmanager
          settings:
            url: http://alertmanager-monitoring-{{$i}}.alertmanager-operated:9093/
      {{end}}
      {{- else }}
        - uid: prometheus-alertmanager
          type: prometheus-alertmanager
          settings:
            url: http://alertmanager-monitoring.alertmanager-operated:9093/
      {{- end }}
  policies:
    - orgId: 1
      receiver: prometheus-alertmanager
      group_by: ['...']
      group_wait: 0s
      group_internval: 0s
      repeat_interval: 1m

P.s. "Legacy alerting will be deprecated in a future release (v10)." at https://grafana.com/docs/grafana/latest/alerting/migrating-alerts/ can be adjusted to v11