monitoring: enable discord notifications

system-apps/monitoring/templates/discord-webhook-secret.yaml

@@ -0,0 +1,18 @@
+apiVersion: external-secrets.io/v1
+kind: ExternalSecret
+metadata:
+  name: discord-webhook
+  namespace: {{ .Release.Namespace }}
+spec:
+  refreshInterval: 1h
+  secretStoreRef:
+    name: weyma-vault
+    kind: ClusterSecretStore
+  target:
+    name: discord-webhook
+    creationPolicy: Owner
+  data:
+  - secretKey: webhook
+    remoteRef:
+      key: monitoring
+      property: discord_webhook

system-apps/monitoring/templates/discord.yaml

@@ -0,0 +1,66 @@
+{{- if .Values.discord.enabled }}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: alertmanager-discord
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app.kubernetes.io/name: alertmanager-discord
+    app.kubernetes.io/instance: {{ .Release.Name }}
+spec:
+  selector:
+    matchLabels:
+      app: alertmanager-discord
+  template:
+    metadata:
+      labels:
+        app: alertmanager-discord
+    spec:
+      containers:
+        - name: alertmanager-discord
+          image: {{ .Values.discord.image | default "ghcr.io/rogerrum/alertmanager-discord:1.0.7" }}
+          ports:
+            - containerPort: 9094
+          env:
+            - name: LISTEN_ADDRESS
+              value: "0.0.0.0:9094"
+            - name: DISCORD_WEBHOOK
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Values.discord.secret.name | quote }}
+                  key: {{ .Values.discord.secret.key | quote }}
+            {{- if .Values.discord.username }}
+            - name: DISCORD_USERNAME
+              value: {{ .Values.discord.username | quote }}
+            {{- end }}
+            {{- if .Values.discord.avatar_url }}
+            - name: DISCORD_AVATAR_URL
+              value: {{ .Values.discord.avatar_url | quote }}
+            {{- end }}
+            {{- if .Values.discord.verbose }}
+            - name: VERBOSE
+              value: "ON"
+            {{- end }}
+          resources:
+            requests:
+              memory: "128Mi"
+              cpu: "500m"
+            limits:
+              memory: "512Mi"
+              cpu: "1"
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: alertmanager-discord
+  namespace: {{ .Release.Namespace }}
+spec:
+  type: ClusterIP
+  selector:
+    app: alertmanager-discord
+  ports:
+    - port: 9094
+      targetPort: 9094
+      protocol: TCP
+{{- end }}

system-apps/monitoring/values.yaml

@@ -40,3 +40,9 @@ kube-prometheus-stack:
                 storage: 50Gi
   grafana:
     enabled: false # Grafana is instead deployed in its own namespace in the core-apps repo
+discord:
+  enabled: true
+  secret:
+    name: discord-webhook
+    key: webhook
+  verbose: true