allow omitting the identity migration pre-upgrade hook

Author: jan94

charts/ziti-router/templates/pre-upgrade-configmap.yaml

@@ -1,4 +1,4 @@
-
+{{if not .Values.omitIdentityMigration}}
 ---
 apiVersion: v1
 kind: ConfigMap
@@ -78,4 +78,5 @@ data:
         {{ include "ziti-router.fullname" . }}-identity
     else
       echo "INFO: identity secret does not exist"
-    fi
+    fi
+{{end}}

charts/ziti-router/templates/pre-upgrade-job.yaml

@@ -1,3 +1,5 @@
+{{if not .Values.omitIdentityMigration}}
+---
 apiVersion: batch/v1
 kind: Job
 metadata:
@@ -72,3 +74,4 @@ spec:
         {{- else }}
           emptyDir: {}
         {{- end }}
+{{end}}

charts/ziti-router/templates/pre-upgrade-serviceaccount.yaml

@@ -1,4 +1,5 @@
-
+{{if not .Values.omitIdentityMigration}}
+---
 apiVersion: v1
 kind: ServiceAccount
 metadata:
@@ -40,3 +41,4 @@ subjects:
   - kind: ServiceAccount
     name: {{ include "ziti-router.fullname" . }}-hook-serviceaccount
     namespace: {{ .Release.Namespace }}
+{{end}}

charts/ziti-router/values.yaml

@@ -360,6 +360,11 @@ tolerations: []
 # -- deployment template spec affinity
 affinity: {}
 
+# -- omit migration of identity secret to persistent volume
+# Previous versions of this chart stored the router identity in a secret resource. A migration is provided by the execution of a pre-upgrade hook.
+# If want to omit this migration (pre-upgrade hook) set this value to true.
+omitIdentityMigration: false
+
 ## Enable persistence using Persistent Volume Claims
 ## ref: http://kubernetes.io/docs/user-guide/persistent-volumes/
 ##