[stable/redis] Rollout new pods on configuration changes (#7619)

* Rename secrets.yaml to secret.yaml

Signed-off-by: Jacob LeGrone <git@jacob.work>

* Perform rolling update when configuration changes

Signed-off-by: Jacob LeGrone <git@jacob.work>

* Interpret redis.conf contents as string

Signed-off-by: Jacob LeGrone <git@jacob.work>

* Bump chart version

Signed-off-by: Jacob LeGrone <git@jacob.work>

stable/redis/Chart.yaml

@@ -1,5 +1,5 @@
 name: redis
-version: 3.8.1
+version: 3.9.0
 appVersion: 4.0.11
 description: Open source, advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets.
 keywords:

stable/redis/templates/configmap.yaml

@@ -10,5 +10,5 @@ metadata:
   name: {{ template "redis.fullname" . }}
 data:
   redis.conf: |-
-{{ toYaml .Values.configmap | indent 4 }}
+{{ .Values.configmap | indent 4 }}
 {{- end }}

stable/redis/templates/redis-master-statefulset.yaml

@@ -25,8 +25,10 @@ spec:
 {{- if .Values.master.podLabels }}
 {{ toYaml .Values.master.podLabels | indent 8 }}
 {{- end }}
-      {{- if .Values.master.podAnnotations }}
       annotations:
+        checksum/configmap: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
+        checksum/secret: {{ include (print $.Template.BasePath "/secret.yaml") . | sha256sum }}
+      {{- if .Values.master.podAnnotations }}
 {{ toYaml .Values.master.podAnnotations | indent 8 }}
       {{- end }}
     spec:

stable/redis/templates/redis-slave-deployment.yaml

@@ -22,8 +22,10 @@ spec:
       {{- if (.Values.slave.podLabels | default .Values.master.podLabels) }}
 {{ toYaml (.Values.slave.podLabels | default .Values.master.podLabels) | indent 8 }}
       {{- end }}
-      {{- if (.Values.slave.podAnnotations | default .Values.master.podAnnotations) }}
       annotations:
+        checksum/configmap: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
+        checksum/secret: {{ include (print $.Template.BasePath "/secret.yaml") . | sha256sum }}
+      {{- if (.Values.slave.podAnnotations | default .Values.master.podAnnotations) }}
 {{ toYaml (.Values.slave.podAnnotations | default .Values.master.podAnnotations) | indent 8 }}
       {{- end }}
     spec:

stable/redis/values.yaml

@@ -203,7 +203,7 @@ master:
   ## Update strategy, can be set to RollingUpdate or onDelete by default.
   ## https://kubernetes.io/docs/tutorials/stateful-application/basic-stateful-set/#updating-statefulsets
   statefulset:
-    updateStrategy: OnDelete
+    updateStrategy: RollingUpdate
     ## Partition update strategy
     ## https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#partitions
     # rollingUpdatePartition: