K8S用yaml资源清单部署redis数据库，数据持久化保存

1.创建redis存储数据目录和配置文件

mkdir -p /data/redis/redis-config/
touch /data/redis/redis-config/redis.conf
cat >> /data/redis/redis-config/redis.conf << EOF
requirepass 123456
bind 0.0.0.0
save 900 1
save 300 10
save 60 10000
EOF

2.编写redis的yaml资源清单

apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis
  namespace: default # 默认空间
  labels:
    name: redis
spec:
  replicas: 1
  selector:
    matchLabels:
      name: redis
  template:
    metadata:
      labels:
        name: redis
    spec:
      containers:
      - name: redis
        image: redis:5.0.5
        volumeMounts:
        - name: redis-config
          mountPath: "/usr/local/etc/redis"
        - name: redis-data
          mountPath: "/data"
        command:
          - "redis-server"
        args:
          - "/usr/local/etc/redis/redis.conf"
      volumes:
      - name: redis-config
        hostPath:
          path: /data/redis/redis-config
          type: DirectoryOrCreate
      - name: redis-data
        hostPath:
          path: /data/redis/redis-data
          type: DirectoryOrCreate
---
apiVersion: v1
kind: Service
metadata:
 name: redis
 namespace: default # 默认空间
 labels:
   name: redis
spec:
 type: NodePort   # 如果需要集群外部访问,这里改为NodePort
 ports:
 - port: 6379
   protocol: TCP
   targetPort: 6379
   name: redis
   nodePort: 32379
 selector:
   name: redis

3.在K8S中执行redis资源清单

[root@k8s-master redis]# ls
redis.yaml
[root@k8s-master redis]# kubectl apply -f redis.yaml #创建redis容器
deployment.apps/redis created
service/redis created
[root@k8s-master redis]# kubectl get pods,svc  #查看pod和svc
NAME                         READY   STATUS    RESTARTS   AGE
pod/redis-654f4d7694-k2qzm   1/1     Running   0          9s

NAME                 TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGE
service/redis        NodePort    10.101.69.100    <none>        6379:32379/TCP   9s
[root@k8s-master redis]#

4.进入容器测试

[root@k8s-master redis]# kubectl exec  -it pod/redis-654f4d7694-k2qzm -- sh
# redis-cli 
127.0.0.1:6379> keys *
(error) NOAUTH Authentication required.
127.0.0.1:6379> auth 123456
OK
127.0.0.1:6379>

5.利用redis预测软件测试