?目錄

1：獲取redis鏡像

2：創(chuàng)建redis主從+哨兵docker-compose文件

3：redis配置和哨兵配置說(shuō)明

4：?jiǎn)?dòng)docker-compose

5：查看啟動(dòng)情況

6：進(jìn)入主節(jié)點(diǎn)查看集群情況

本文以docker-compose 搭建高可用Redis 主從、哨兵集群為例子

關(guān)于redis主從，哨兵集群原理參見(jiàn)：Redis 單機(jī)安裝/ 哨兵模式集群安裝_慕菲煙云的博客-CSDN博客_redis哨兵模式安裝

由于redis哨兵模式的網(wǎng)絡(luò)和docker的網(wǎng)絡(luò)配合的并不是太好，這里docker的網(wǎng)絡(luò)需要用host模式，既docker容器直接使用宿主機(jī)的ip和端口。

1：獲取redis鏡像

docker pull redis:6.2.7

2：創(chuàng)建redis主從+哨兵docker-compose文件

cd /opt/docker/redis
vi docker-compose.yml

docker-compose.yml的內(nèi)容如下?

version: '3'
services:
  master:
    image: redis:6.2.7       ## 鏡像
    container_name: redis-master
    command: redis-server /etc/redis/redis.conf --requirepass 123456 --masterauth 123456
    volumes:
    - /opt/docker/redis/data/redis_data1:/data
    - /opt/docker/redis/conf/redis1.conf:/etc/redis/redis.conf
    network_mode: "host"
  slave1:
    image: redis:6.2.7                ## 鏡像
    container_name: redis-slave-1
    volumes:
    - /opt/docker/redis/data/redis_data2:/data
    - /opt/docker/redis/conf/redis2.conf:/etc/redis/redis.conf
    command: redis-server /etc/redis/redis.conf --slaveof redis-master 6379 --requirepass 123456 --masterauth 123456 
    depends_on:
    - master
    network_mode: "host"
  slave2:
    image: redis:6.2.7                ## 鏡像
    container_name: redis-slave-2
    volumes:
    - /opt/docker/redis/data/redis_data3:/data
    - /opt/docker/redis/conf/redis3.conf:/etc/redis/redis.conf
    command: redis-server /etc/redis/redis.conf --slaveof redis-master 6379 --requirepass 123456 --masterauth 123456
    depends_on:
    - master
    network_mode: "host"
  sentinel1:
    image: redis:6.2.7       ## 鏡像
    container_name: redis-sentinel-1
    command: redis-sentinel /usr/local/etc/redis/sentinel.conf
    volumes:
    - /opt/docker/redis/conf/sentinel1.conf:/usr/local/etc/redis/sentinel.conf
    network_mode: "host"
    depends_on:
    - master
    - slave1
    - slave2
  sentinel2:
    image: redis:6.2.7                ## 鏡像
    container_name: redis-sentinel-2          
    command: redis-sentinel /usr/local/etc/redis/sentinel.conf
    volumes:
    - /opt/docker/redis/conf/sentinel2.conf:/usr/local/etc/redis/sentinel.conf
    network_mode: "host"
    depends_on:
    - master
    - slave1
    - slave2
  sentinel3:
    image: redis:6.2.7                ## 鏡像
    container_name: redis-sentinel-3          
    command: redis-sentinel /usr/local/etc/redis/sentinel.conf
    volumes:
    - /opt/docker/redis/conf/sentinel3.conf:/usr/local/etc/redis/sentinel.conf
    network_mode: "host"
    depends_on:
    - master
    - slave1
    - slave2

3：redis配置和哨兵配置說(shuō)明

?查看配置文件的目錄樹(shù)

cd /opt/docker/redis
tree ./

結(jié)構(gòu)如下

redis1.conf，redis2.conf，redis3.conf配置如下

#redis1.conf
bind 0.0.0.0
port 6379
protected-mode no
slave-read-only no

#redis2.conf
bind 0.0.0.0
port 6380
protected-mode no
slave-read-only no

#redis3.conf
bind 0.0.0.0
port 6381
protected-mode no
slave-read-only no

?sentinel1.conf，sentinel1.conf，sentinel1.conf配置：

#sentinel1.conf
port 26379
dir /tmp
sentinel monitor mymaster 192.168.18.131 6379 2
sentinel auth-pass mymaster 123456 
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 10000  
sentinel deny-scripts-reconfig yes

#sentinel2.conf
port 26380
dir /tmp
sentinel monitor mymaster 192.168.18.131 6379 2
sentinel auth-pass mymaster 123456 
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 10000  
sentinel deny-scripts-reconfig yes

#sentinel3.conf
port 26381
dir /tmp
sentinel monitor mymaster 192.168.18.131 6379 2
sentinel auth-pass mymaster 123456 
sentinel down-after-milliseconds mymaster 30000
sentinel parallel-syncs mymaster 1
sentinel failover-timeout mymaster 10000  
sentinel deny-scripts-reconfig yes

說(shuō)明：

【sentinel monitor mymaster 192.168.18.131 6379 2】192.168.18.131為服務(wù)器的IP地址，6379為redis master的端口號(hào)
【sentinel auth-pass mymaster 123456?】設(shè)置主節(jié)點(diǎn)的密碼 ?
【sentinel down-after-milliseconds mymaster 30000】表示在一段時(shí)間范圍內(nèi)sentinel向master發(fā)送的心跳PING沒(méi)有回復(fù)則認(rèn)為master不可用了。?
【sentinel parallel-syncs mymaster 1】的parallel-syncs表示設(shè)置在故障轉(zhuǎn)移之后，同時(shí)可以重新配置使用新master的slave的數(shù)量。數(shù)字越低，更多的時(shí)間將會(huì)用故障轉(zhuǎn)移完成，但是如果slaves配置為服務(wù)舊數(shù)據(jù)，你可能不希望所有的slave同時(shí)重新同步master。因?yàn)橹鲝膹?fù)制對(duì)于slave是非阻塞的，當(dāng)停止從master加載批量數(shù)據(jù)時(shí)有一個(gè)片刻延遲。通過(guò)設(shè)置選項(xiàng)為1，確信每次只有一個(gè)slave是不可到達(dá)的。
【sentinel failover-timeout mymaster 10000 ?】表示10秒內(nèi)mymaster還沒(méi)活過(guò)來(lái)，則認(rèn)為master宕機(jī)了。?

redis_data1,?redis_data2,redis_data3為空文件夾，用于存放redis數(shù)據(jù)文件

4：?jiǎn)?dòng)docker-compose

docker-compose up
#或者，后臺(tái)啟動(dòng)
docker-compose up -d

5：查看啟動(dòng)情況

6：進(jìn)入主節(jié)點(diǎn)查看集群情況

docker exec -it 主節(jié)點(diǎn)容器id或者容器名稱 bash
redis-cli -p 6379
info replication