标签：env timeout protect nil man get als hits int
环境 openshift 3.10 redis 5.0.1 理论上同样适用于K8S
参考链接 https://rancher.com/blog/2019/deploying-redis-cluster/
注意: Cluster并不能做到HA
---
实际步骤
oc create -f pv.yaml -n cluster
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: cluster-pv-0
labels:
pvname: cluster-pv-0
spec:
capacity:
storage: 100M
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
nfs:
server: 192.168.64.108
path: /data/nfs/cluster-0
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: cluster-pv-1
labels:
pvname: cluster-pv-1
spec:
capacity:
storage: 100M
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
nfs:
server: 192.168.64.108
path: /data/nfs/cluster-1
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: cluster-pv-2
labels:
pvname: cluster-pv-2
spec:
capacity:
storage: 100M
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
nfs:
server: 192.168.64.108
path: /data/nfs/cluster-2
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: cluster-pv-3
labels:
pvname: cluster-pv-3
spec:
capacity:
storage: 100M
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
nfs:
server: 192.168.64.108
path: /data/nfs/cluster-3
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: cluster-pv-4
labels:
pvname: cluster-pv-4
spec:
capacity:
storage: 100M
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
nfs:
server: 192.168.64.108
path: /data/nfs/cluster-4
---
apiVersion: v1
kind: PersistentVolume
metadata:
name: cluster-pv-5
labels:
pvname: cluster-pv-5
spec:
capacity:
storage: 100M
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
nfs:
server: 192.168.64.108
path: /data/nfs/cluster-5
---
在nfs的/data/nfs/cluster-012345下分别增加空的nodes.conf
oc create -f redis-sts.yaml -n cluster
redis-sts.yaml内容
---
apiVersion: v1
kind: ConfigMap
metadata:
name: redis-cluster
data:
update-node.sh: |
#!/bin/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
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" ]
resources:
requests:
storage: 1Gi
oc create -f redis-svc.yaml -n cluster
redis-svc.yaml内容
---
apiVersion: v1
kind: Service
metadata:
name: redis-cluster
spec:
type: ClusterIP
ports:
- port: 6379
targetPort: 6379
name: client
- port: 16379
targetPort: 16379
name: gossip
selector:
app: redis-cluster
确认部署
oc get pods -n cluster
oc get pv -n cluster
kubectl get pvc -n cluster
初始化
oc exec -it redis-cluster-0 -- redis-cli --cluster create --cluster-replicas 1 $(oc get pods -l app=redis-cluster -o jsonpath=‘{range.items[*]}{.status.podIP}:6379 ‘)
查看
for x in $(seq 0 5); do echo "redis-cluster-$x"; oc exec redis-cluster-$x -- redis-cli role; echo; done
测试
kubectl apply -f app-deployment-service.yaml
app-deployment-service.yaml内容
---
apiVersion: v1
kind: Service
metadata:
name: hit-counter-lb
spec:
type: LoadBalancer
ports:
- port: 80
protocol: TCP
targetPort: 5000
selector:
app: myapp
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: hit-counter-app
spec:
replicas: 1
selector:
matchLabels:
app: myapp
template:
metadata:
labels:
app: myapp
spec:
containers:
- name: myapp
image: harbor.adb.com/zed/zed:v1
ports:
- containerPort: 5000
zed code
package main
import (
"fmt"
"github.com/gin-gonic/gin"
"github.com/go-redis/redis"
)
func main() {
rdb := redis.NewClusterClient(&redis.ClusterOptions{
Addrs: []string{"redis-cluster:6379"},
})
pong, err := rdb.Ping().Result()
fmt.Println(pong, err)
r := gin.Default()
r.GET("/", func(c *gin.Context) {
value, err := rdb.Incr("hits3").Result()
if err != nil {
fmt.Println(err)
}
c.String(200, fmt.Sprintf("I have been hit %d times since deployment", value))
})
r.Run("0.0.0.0:5000")
}
zed dockerfile
FROM golang:1.13 ENV GOPROXY https://goproxy.cn ENV GO111MODULE on WORKDIR /zed/ COPY . /zed/ RUN go build -o ./zed ./main/cmd.go EXPOSE 5000 ENTRYPOINT ["./zed"]
在Openshift/K8S下搭建Redis Cluster实践
标签：env timeout protect nil man get als hits int
原文地址：https://www.cnblogs.com/restful/p/12035647.html
