K8S环境部署Redis-cluster
参考
###部署
Redis-sts.yaml
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| ---
apiVersion: v1
kind: ConfigMap
metadata:
name: redis-cluster
namespace: redis-cluster
data:
update-node.sh: |
REDIS_NODES="/data/nodes.conf"
sed -i -e "/myself/ s/[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}/${POD_IP}/" ${REDIS_NODES}
exec "$@"
redis.conf: |+
cluster-enabled yes
cluster-require-full-coverage no
cluster-node-timeout 15000
cluster-config-file /data/nodes.conf
cluster-migration-barrier 1
appendonly yes
protected-mode no
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: redis-cluster
namespace: redis-cluster
spec:
serviceName: redis-cluster
replicas: 6
selector:
matchLabels:
app: redis-cluster
template:
metadata:
labels:
app: redis-cluster
spec:
containers:
- name: redis
image: redis:5.0.1-alpine
ports:
- containerPort: 6379
name: client
- containerPort: 16379
name: gossip
command: ["/conf/update-node.sh", "redis-server", "/conf/redis.conf"]
env:
- name: POD_IP
valueFrom:
fieldRef:
fieldPath: status.podIP
volumeMounts:
- name: conf
mountPath: /conf
readOnly: false
- name: data
mountPath: /data
readOnly: false
volumes:
- name: conf
configMap:
name: redis-cluster
defaultMode: 0755
volumeClaimTemplates:
- metadata:
name: data
spec:
accessModes: [ "ReadWriteOnce" ]
storageClassName: nfs
resources:
requests:
storage: 1Gi
|
Redis-svc.yaml
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| ---
apiVersion: v1
kind: Service
metadata:
name: redis-cluster
namespace: redis-cluster
spec:
type: ClusterIP
ports:
- port: 6379
targetPort: 6379
name: client
- port: 16379
targetPort: 16379
name: gossip
selector:
app: redis-cluster
|
主要配置文件和参考中的基本一致,只添加了namespace和storageClass,根据实际情况修改
创建群集
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| kubectl exec -n redis-cluster -it redis-cluster-0 -- redis-cli --cluster create --cluster-replicas 1 $(kubectl get -n redis-cluster pods -l app=redis-cluster -o jsonpath='{range.items[*]}{.status.podIP}:6379 ')
|
相比参考中的命令 增加了 -n
验证群集部署
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| kubectl exec -n redis-cluster -it redis-cluster-0 -- redis-cli cluster info
|
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| for x in $(seq 0 5); do echo "redis-cluster-$x"; kubectl exec -n redis-cluster redis-cluster-$x -- redis-cli role; echo; done
|