Not getting alerts

Grafana Configuration
, ,
1 
  alerting:
    policies.yaml:
      policies:
        - orgId: 1
          receiver: email
          group_by:
          - grafana_folder
          - alertname
    contactpoints.yaml:
      contactPoints:
      - name: email
        org_id: 1
        receivers:
        - uid: "email"
          type: email
          settings:
            addresses: |
              me@mydomain.dk
              myfriend@hisdomain.vn
            singleEmail: true
          disableResolveMessage: false

I have configured the policies and contact as above. Using the “test” in contact points sends the expected [FIRING:1] TestAlert Grafana email and we both receive it.

My alert is configured as:

kind: PrometheusRule
apiVersion: monitoring.coreos.com/v1
metadata:
  name: argocd-alerts
spec:
  "groups":
  - "name": "argo-cd"
    "rules":
    - "alert": "ArgoCdAppOutOfSync"
      "annotations":
        "description": {{`"The application {{ $labels.dest_server }}/{{ $labels.project }}/{{ $labels.name }} is out of sync with the sync status {{ $labels.sync_status }} for the past 15m."`}}
        "summary": "An ArgoCD Application is Out Of Sync."
      "expr": |
        sum(
          argocd_app_info{
            job=~".*",
            sync_status!="Synced"
          }
        ) by (job, dest_server, project, name, sync_status)
        > 0
      "for": "15m"
      "labels":
        "severity": "warning"

It shows fine in grafana UI, and is registered as “firing”.

However, none of us ever get any alerts from firing alerts, not the above or any other.

What am i doing wrong?

2

Figured it out…
It is not at all clear or obvious that grafanas alertmanager is not used at all, but it is instead mimir or prometheus that does the alerting.