chore(redis): add redis persistence

Author: duanhongyi

charts/redis/templates/redis-statefulset.yaml

@@ -22,24 +22,45 @@ spec:
       - name: drycc-redis
         image: {{.Values.imageRegistry}}/{{.Values.imageOrg}}/redis:{{ .Values.imageTag }}
         imagePullPolicy: {{ .Values.imagePullPolicy }}
-{{- if or (.Values.limitsCpu) (.Values.limitsMemory)}}
+        {{- if or (.Values.limitsCpu) (.Values.limitsMemory)}}
         resources:
           limits:
-{{- if (.Values.limitsCpu) }}
+            {{- if (.Values.limitsCpu) }}
             cpu: {{.Values.limitsCpu}}
-{{- end}}
-{{- if (.Values.limitsMemory) }}
+            {{- end}}
+            {{- if (.Values.limitsMemory) }}
             memory: {{.Values.limitsMemory}}
-{{- end}}
-{{- end}}
+            {{- end}}
+        {{- end}}
         command: ["/bin/boot", "--port", "6379"]
         ports:
         - containerPort: 6379
         volumeMounts:
         - name: redis-creds
           mountPath: /var/run/secrets/drycc/redis/creds
+        {{- if .Values.persistence.enabled }}
+        - name: redis-data
+          mountPath: /data
+        {{- end }}
       volumes:
       - name: redis-creds
         secret:
           secretName: redis-creds
+  {{- if .Values.persistence.enabled }}
+  volumeClaimTemplates:
+  - metadata:
+      name: redis-data
+    spec:
+      accessModes: [ "ReadWriteOnce" ]
+      {{- if .Values.persistence.storageClass }}
+      {{- if (eq "-" .Values.persistence.storageClass) }}
+      storageClassName: ""
+      {{- else }}
+      storageClassName: "{{ .Values.persistence.storageClass }}"
+      {{- end }}
+      {{- end }}
+      resources:
+        requests:
+          storage: {{ .Values.persistence.size | quote }}
+  {{- end }}
 {{- end }}

charts/redis/values.yaml

@@ -5,17 +5,22 @@ imageRegistry: "docker.io"
 # limitsCpu: "100m"
 # limitsMemory: "50Mi"
 
-global:
-  # Set the location of Workflow's redis instance
-  #
-  # Valid values are:
-  # - on-cluster: Run Redis within the Kubernetes cluster
-  # - off-cluster: Run Redis outside the Kubernetes cluster (configure in redis section)
-  redisLocation: "on-cluster"
-
 # The following parameters are configured only when using an on-cluster Redis instance
 replicas: 1
 
 # The following parameters are configured only when using an off-cluster Redis instance
 addrs: "" # A list of clusters: "127.0.0.1:7001/1,127.0.0.2:7002/1"
 password: "redis password" # "" == no password
+# GCP PDs and EBS volumes are supported only
+persistence:
+  enabled: false # Set to true to enable persistence
+  size: 5Gi
+  storageClass: ""
+
+global:
+  # Set the location of Workflow's redis instance
+  #
+  # Valid values are:
+  # - on-cluster: Run Redis within the Kubernetes cluster
+  # - off-cluster: Run Redis outside the Kubernetes cluster (configure in redis section)
+  redisLocation: "on-cluster"

rootfs/bin/boot

@@ -9,7 +9,7 @@ REDIS_PASSWORD_FILE=/var/run/secrets/drycc/redis/creds/password
 if [ -e $REDIS_PASSWORD_FILE ]; then
     REDIS_PASSWORD="$(cat /var/run/secrets/drycc/redis/creds/password)"
     if [ -n "$REDIS_PASSWORD" ]; then
-        echo "requirepass $REDIS_PASSWORD" >> $REDIS_CONFIG_FILE
+        printf "\nrequirepass %s" "$REDIS_PASSWORD" >> $REDIS_CONFIG_FILE
     fi
 fi
 

rootfs/etc/redis/redis.conf

@@ -1,3 +1,12 @@
 daemonize no
 bind 0.0.0.0
 logfile ""
+
+save 900 1
+save 300 10
+save 60 1000
+
+appendonly yes
+auto-aof-rewrite-percentage 100
+auto-aof-rewrite-min-size 64mb
+appendfsync everysec