add postStart lifecycle hook script to all deployments

Author: cognifloyd

templates/configmaps_post-start-script.yaml

@@ -1,10 +1,12 @@
+{{- range tuple "st2auth" "st2api" "st2stream" "st2web" "st2rulesengine" "st2timersengine" "st2workflowengine" "st2scheduler" "st2notifier" "st2sensorcontainer" "st2actionrunner" "st2garbagecollector" "st2client" "st2chatops" -}}
+  {{- if or (index $.Values . "postStartScript") (eq . "st2actionrunner") (eq . "st2client") }}
 ---
 apiVersion: v1
 kind: ConfigMap
 metadata:
-  name: {{ $.Release.Name }}-st2actionrunner-post-start-script
+  name: {{ $.Release.Name }}-{{ . }}-post-start-script
   annotations:
-    description: Custom postStart lifecycle event handler script for st2actionrunner
+    description: Custom postStart lifecycle event handler script for {{ . }}
   labels:
     app: st2
     tier: backend
@@ -13,11 +15,12 @@ metadata:
     release: {{ $.Release.Name }}
     heritage: {{ $.Release.Service }}
 data:
-  # k8s calls this script in parallel with starting st2actionrunner (ie the same time as ENTRYPOINT)
+  # k8s calls this script in parallel with starting {{ . }} (ie the same time as ENTRYPOINT)
   # The pod will not be marked as "running" until this script completes successfully.
   # see: https://kubernetes.io/docs/concepts/containers/container-lifecycle-hooks/
   post-start.sh: |
     #!/bin/bash
+    {{- if or (eq . "st2actionrunner") (eq . "st2client") }}
       {{- $system_user := $.Values.st2.system_user.user }}
       {{- $ssh_key_file := tpl $.Values.st2.system_user.ssh_key_file $ }}
       {{- $ssh_key_file_name := base $ssh_key_file }}
@@ -27,3 +30,8 @@ data:
     chown -R {{ $system_user }}:{{ $system_user }} {{ $ssh_key_file_dir }}
     chmod 400 {{ $ssh_key_file }}
     chmod 500 {{ $ssh_key_file_dir }}
+    {{- end }}
+    {{- index $.Values . "postStartScript" | nindent 4 }}
+
+  {{- end }}
+{{- end -}}