docker-compose 搭建redis HA集群

docker-compose 搭建redis HA集群

一、概要

   本次搭建redis集群采用docker进行构建，采用哨兵模式防止集群宕机

二、创建redis及sentinel目录

   创建redis目录： mkdir -pv /usr/local/docker/redis
   创建sentinel目录：mksir -pv /usr/local/docker/sentinel

三、创建redis服务

1、进入redis目录

     cd /usr/local/docker/redis

2、创建docker-compose文件

   touch docker-compose.yml

3、编辑docker-compose文件

    vim docker-compose.yml

4、将下面的信息粘贴到docker-compose.yml中，并保存

    version: '3.4'
       services:
           master:
           image: redis
           container_name: redis-master
           restart: always
           command: redis-server --port
           ports: 
              - 6379:6379
           #network_mode: "host"

         slave1:
           image: redis
		  container_name: redis-slave-1
          restart: always
          command: redis-server --slaveof redis-master 6379 
          ports: 
             - 6380:6379
          #network_mode: "host"

     slave2:
       image: redis
       container_name: redis-slave-2
       restart: always
       command: redis-server --slaveof redis-master 6379 
       ports:
          - 6381:6379
      #network_mode: "host"

5、启动redis集群

   docker-compose up -d  

6、查看集群是否启动成功

   docker ps
   如果启动出现如下图标识启动成功

四、创建sentinel服务

1、进入sentinel目录

    cd  /usr/local/docker/sentinel

2、创建docker-compose文件

    touch docker-compose.yml

3、编辑docker-compose文件

    vim docker-compose.yml

4、将下面的信息粘贴到docker-compose.yml中，并保存

 version: '3'
	services:
	  sentinel1:
	    image: redis
	    container_name: redis-sentinel-1
	    command: redis-sentinel /usr/local/etc/sentinel.conf
	    restart: always
	    #network_mode: "host"
	    ports:
	      - 26379:26379
	    volumes:
	      - ./sentinel1.conf:/usr/local/etc/sentinel.conf
	
	  sentinel2:
	    image: redis
	    container_name: redis-sentinel-2
	    command: redis-sentinel /usr/local/etc/sentinel.conf
	    restart: always
	    #network_mode: "host"
	    ports:
	      - 26380:26379
	    volumes:
	      - ./sentinel2.conf:/usr/local/etc/sentinel.conf
	
	  sentinel3:
	    image: redis
	    container_name: redis-sentinel-3
	    command: redis-sentinel /usr/local/etc/sentinel.conf
	    restart: always
	    #network_mode: "host"
	    ports:
	      - 26381:26379
	    volumes:
	      - ./sentinel3.conf:/usr/local/etc/sentinel.conf

5、创建sentinel.conf文件

   touch  /usr/local/docker/sentinel/sentinel.conf

6、编辑sentinel.conf文件

   vim  /usr/local/docker/sentinel/sentinel.conf   

7、将下面的信息粘贴到sentinel.conf中，并保存

	port 26379
	dir /tmp
	
	sentinel monitor mymaster 192.168.88.134 6379 2
	sentinel down-after-milliseconds mymaster 30000
	sentinel parallel-syncs mymaster 1
	sentinel failover-timeout mymaster 180000
	sentinel deny-scripts-reconfig yes

8、将刚刚创建的sentinel.conf在创建3份，一模一样就可以了

	cp sentinel.conf sentinel1.conf
	cp sentinel.conf sentinel2.conf
	cp sentinel.conf sentinel3.conf

9、启动sentinel服务

	docker-compose up -d

10、查看集群是否启动成功

    docker ps
    如果启动出现如下图标识启动成功

五、查看进入哨兵节点，查看是否有主节点

1、进入运行中的sentinel容器

 	docker exec -it b1eb09f2700a bash 

2、连接到redis中

 	redis-cli -p 26379

3、输入如下命令“sentinel master mymaster”查看集群是否成功，如果出现下面信息表示集群搭建成功

GitHub样例请参见：https://github.com/LuckyToMeet-Dian-N/DevelopmentUtils
注意：GitHub样例为转载