Helm: add Grafana annotations (attempt #2)

charts/posthog/templates/grafana-annotation-post.job.yaml

@@ -0,0 +1,34 @@
+#
+# This job gets installed only if Grafana, Loki and Promtail are enabled.
+#
+# It's an ephemeral container running at the start and end of each Helm
+# deploy and it's used to log at stdout the Helm revision we are
+# installing / we finished installing.
+#
+# This datapoint is useful and can be very helpful as annotation
+# in Grafana dashboard.
+#
+{{- if and .Values.grafana.enabled (and .Values.loki.enabled .Values.promtail.enabled) }}
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: {{ printf "%s-grafana-annotation-job-post-%s" .Release.Name (now | date "2006-01-02-15-04-05") }}
+  labels: {{- include "_snippet-metadata-labels-common" . | nindent 4 }}
+  annotations: {{- include "_snippet-metadata-annotations-common" . | nindent 4 }}
+    "helm.sh/hook": "post-install,post-upgrade,post-rollback"
+spec:
+  template:
+    metadata:
+      name: {{ printf "%s-grafana-annotation-job-post-%s" .Release.Name (now | date "2006-01-02-15-04-05") }}
+    spec:
+      restartPolicy: Never
+      containers:
+      - name: grafana-annotation-job-post
+        image: {{ .Values.busybox.image }}
+        imagePullPolicy: {{ .Values.busybox.pullPolicy }}
+        command:
+          - /bin/sh
+          - -c
+          - |
+            echo '{"operation": "helm_release", "operation_stage": "end", "helm_revision": "{{ .Release.Revision }}"}'
+{{- end }}

charts/posthog/templates/grafana-annotation-pre.job.yaml

@@ -0,0 +1,34 @@
+#
+# This job gets installed only if Grafana, Loki and Promtail are enabled.
+#
+# It's an ephemeral container running at the start and end of each Helm
+# deploy and it's used to log at stdout the Helm revision we are
+# installing / we finished installing.
+#
+# This datapoint is useful and can be very helpful as annotation
+# in Grafana dashboard.
+#
+{{- if and .Values.grafana.enabled (and .Values.loki.enabled .Values.promtail.enabled) }}
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: {{ printf "%s-grafana-annotation-job-pre-%s" .Release.Name (now | date "2006-01-02-15-04-05") }}
+  labels: {{- include "_snippet-metadata-labels-common" . | nindent 4 }}
+  annotations: {{- include "_snippet-metadata-annotations-common" . | nindent 4 }}
+    "helm.sh/hook": "pre-install,pre-upgrade,pre-rollback"
+spec:
+  template:
+    metadata:
+      name: {{ printf "%s-grafana-annotation-job-pre-%s" .Release.Name (now | date "2006-01-02-15-04-05") }}
+    spec:
+      restartPolicy: Never
+      containers:
+      - name: grafana-annotation-job-pre
+        image: {{ .Values.busybox.image }}
+        imagePullPolicy: {{ .Values.busybox.pullPolicy }}
+        command:
+          - /bin/sh
+          - -c
+          - |
+            echo '{"operation": "helm_release", "operation_stage": "start", "helm_revision": "{{ .Release.Revision }}"}'
+{{- end }}

charts/posthog/values.yaml

@@ -1183,7 +1183,7 @@ promtail:
   config:
     lokiAddress: http://posthog-loki:3100/loki/api/v1/push
   ## -- Pod annotations.
-  podAnnotations:
+  podAnnotations: {}
     # Uncomment those lines if you want Prometheus server to scrape metrics.
     # prometheus.io/scrape: "true"
     # prometheus.io/path: /metrics
@@ -1201,7 +1201,7 @@ prometheus:
   alertmanager:
     # -- Whether to install Prometheus AlertManager or not.
     enabled: false
-    podAnnotations:
+    podAnnotations: {}
       # Uncomment those lines if you want Prometheus server to scrape metrics.
       # prometheus.io/scrape: "true"
       # prometheus.io/path: /metrics