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jaya-kopsjaya-kops
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redis distributed helm (#20)
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‎charts/redis-distributed/Chart.yaml‎

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apiVersion: v1
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appVersion: "1.0"
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description: Helm chart deploys redis distributed instance
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name: redis-distributed
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version: 0.0.1
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icon: "https://zop.dev/logo.png"
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maintainers:
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- name: ZopDev
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url: zop.dev

‎charts/redis-distributed/templates/configmap.yaml‎

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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: "{{ .Release.Name }}-redis-configmap"
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namespace: {{ .Release.Namespace | quote }}
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labels:
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app.kubernetes.io/component: master
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data:
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master.conf: |
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dir /data
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rename-command FLUSHDB ""
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rename-command FLUSHALL ""
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replica.conf: |
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dir /data
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slave-read-only yes

‎charts/redis-distributed/templates/headless-svc.yaml‎

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apiVersion: v1
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kind: Service
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metadata:
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name: "{{ .Release.Name }}-redis-headless-service"
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namespace: {{ .Release.Namespace | quote }}
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labels:
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app.kubernetes.io/component: master
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spec:
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type: ClusterIP
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clusterIP: None
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ports:
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- name: redis
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port: 6379
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targetPort: 6379
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selector:
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app: "{{ .Release.Name }}-redis"

‎charts/redis-distributed/templates/service-config-map.yaml‎

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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: "{{ .Release.Name }}-redis-values-configmap"
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namespace: {{ .Release.Namespace | quote }}
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labels:
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app.kubernetes.io/component: master
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data:
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REDIS_PORT: "6379"
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REDIS_HOST: "{{ .Release.Name }}-redis-headless-service"
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REDIS_URL: {{ printf "redis://%s-redis-headless-service:6379" .Release.Name }}

‎charts/redis-distributed/templates/statefulset-master.yaml‎

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apiVersion: apps/v1
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kind: StatefulSet
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metadata:
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name: {{ .Release.Name }}-redis
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namespace: {{ .Release.Namespace }}
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labels:
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app.kubernetes.io/part-of: redis
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app: "{{ .Release.Name }}-redis"
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spec:
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replicas: 1
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serviceName: "{{ .Release.Name }}-redis-headless-service"
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selector:
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matchLabels:
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app.kubernetes.io/part-of: redis
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app: "{{ .Release.Name }}-redis"
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updateStrategy:
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type: {{ .Values.updateStrategy.type }}
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template:
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metadata:
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labels:
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app.kubernetes.io/part-of: redis
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app: "{{ .Release.Name }}-redis"
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spec:
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containers:
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- name: redis
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image: {{ .Values.image }}
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command:
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- /bin/bash
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- -c
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- |
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if [[ ! -f /etc/redis/master.conf ]];then
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cp /etc/redis/mounted-etc/master.conf /etc/redis/master.conf
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fi
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ARGS=("--port" "${REDIS_PORT}")
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ARGS+=("--protected-mode" "no")
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ARGS+=("--include" "/etc/redis/master.conf")
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redis-server "${ARGS[@]}"
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resources:
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requests:
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memory: {{ .Values.master.resources.requests.memory }}
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cpu: {{ .Values.master.resources.requests.cpu }}
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limits:
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memory: {{ .Values.master.resources.limits.memory }}
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cpu: {{ .Values.master.resources.limits.cpu }}
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env:
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- name: REDIS_REPLICATION_MODE
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value: master
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- name: REDIS_PORT
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value: "6379"
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ports:
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- name: redis
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containerPort: 6379
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livenessProbe:
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exec:
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command:
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- redis-cli
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- ping
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initialDelaySeconds: 30
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periodSeconds: 10
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timeoutSeconds: 5
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failureThreshold: 3
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readinessProbe:
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exec:
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command:
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- redis-cli
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- ping
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initialDelaySeconds: 10
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periodSeconds: 10
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timeoutSeconds: 5
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failureThreshold: 3
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volumeMounts:
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- name: {{ .Release.Name }}-redis-persistent-storage
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mountPath: /data
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- name: redis-config
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mountPath: /etc/redis/mounted-etc
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volumes:
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- name: redis-config
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configMap:
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name: "{{ .Release.Name }}-redis-configmap"
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volumeClaimTemplates:
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- metadata:
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name: {{ .Release.Name }}-redis-persistent-storage
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spec:
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accessModes:
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- ReadWriteOnce
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resources:
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requests:
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storage: {{ .Values.master.persistence.size }}

‎charts/redis-distributed/templates/statefulset-slave.yaml‎

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{{- if .Values.slave.enable }}
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apiVersion: apps/v1
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kind: StatefulSet
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metadata:
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name: {{ .Release.Name }}-redis-slave
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namespace: {{ .Release.Namespace }}
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labels:
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app.kubernetes.io/part-of: redis
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app: "{{ .Release.Name }}-redis"
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spec:
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replicas: {{ .Values.slave.count }}
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serviceName: "{{ .Release.Name }}-redis-headless-service"
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selector:
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matchLabels:
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app.kubernetes.io/part-of: redis
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app: "{{ .Release.Name }}-redis"
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updateStrategy:
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type: {{ .Values.updateStrategy.type }}
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template:
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metadata:
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labels:
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app.kubernetes.io/part-of: redis
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app: "{{ .Release.Name }}-redis"
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spec:
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containers:
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- name: redis
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image: {{ .Values.image }}
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command:
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- /bin/bash
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- -c
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- |
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if [[ ! -f /etc/redis/replica.conf ]]; then
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cp /etc/redis/mounted-etc/replica.conf /etc/redis/replica.conf
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fi
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until redis-cli -h "${REDIS_MASTER_HOST}" -p "${REDIS_MASTER_PORT_NUMBER}" ping; do
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echo "Waiting for Redis master to be available..."
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sleep 5
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done
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ARGS=("--port" "${REDIS_PORT}")
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ARGS+=("--slaveof" "${REDIS_MASTER_HOST}" "${REDIS_MASTER_PORT_NUMBER}")
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ARGS+=("--protected-mode" "no")
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ARGS+=("--include" "/etc/redis/replica.conf")
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redis-server "${ARGS[@]}"
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resources:
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requests:
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memory: {{ .Values.slave.resources.requests.memory }}
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cpu: {{ .Values.slave.resources.requests.cpu }}
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limits:
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memory: {{ .Values.slave.resources.limits.memory }}
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cpu: {{ .Values.slave.resources.limits.cpu }}
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env:
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- name: REDIS_REPLICATION_MODE
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value: slave
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- name: REDIS_MASTER_HOST
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value: "{{ .Release.Name }}-redis-headless-service"
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- name: REDIS_PORT
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value: "6379"
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- name: REDIS_MASTER_PORT_NUMBER
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value: "6379"
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ports:
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- name: redis
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containerPort: 6379
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livenessProbe:
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exec:
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command:
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- redis-cli
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- ping
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initialDelaySeconds: 30
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periodSeconds: 10
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timeoutSeconds: 5
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failureThreshold: 3
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readinessProbe:
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exec:
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command:
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- redis-cli
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- ping
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initialDelaySeconds: 10
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periodSeconds: 10
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timeoutSeconds: 5
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failureThreshold: 3
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volumeMounts:
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- name: {{ .Release.Name }}-redis-persistent-storage
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mountPath: /data
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- name: redis-config
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mountPath: /etc/redis/mounted-etc
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volumes:
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- name: redis-config
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configMap:
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name: "{{ .Release.Name }}-redis-configmap"
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volumeClaimTemplates:
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- metadata:
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name: {{ .Release.Name }}-redis-persistent-storage
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spec:
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accessModes:
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- ReadWriteOnce
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resources:
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requests:
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storage: {{ .Values.slave.persistence.size }}
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{{- end }}

‎charts/redis-distributed/values.yaml‎

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updateStrategy:
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type: RollingUpdate
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image: "redis:6.2.13"
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master:
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resources:
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requests:
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cpu: "100m"
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memory: "500Mi"
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limits:
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cpu: "500m"
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memory: "1000Mi"
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persistence:
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size: 10Gi
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slave:
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enable : true
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count: 1
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resources:
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requests:
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cpu: "100m"
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memory: "500Mi"
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limits:
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cpu: "500m"
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memory: "1000Mi"
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persistence:
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size: 10Gi

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