Docker-compose部署redis-cluster集群
参考链接：https://www.jianshu.com/p/b7dea62bcd8b
参考镜像：https://github.com/publicisworldwide/docker-stacks/tree/master/oracle-linux/environments/storage/redis-cluster
1.创建数据目录
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| root@rede:
/data/redis
root@rede:
root@rede:
root@rede:
7001 7002 7003 7004 7005 7006 docker-compose.yml
|
2.创建一个docker-compose.yml文件，内容如下：
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| version: '3'
services:
redis1:
image: publicisworldwide/redis-cluster
network_mode: host
restart: always
volumes:
- /data/redis/7001/data:/data
environment:
- REDIS_PORT=7001
redis2:
image: publicisworldwide/redis-cluster
network_mode: host
restart: always
volumes:
- /data/redis/7002/data:/data
environment:
- REDIS_PORT=7002
redis3:
image: publicisworldwide/redis-cluster
network_mode: host
restart: always
volumes:
- /data/redis/7003/data:/data
environment:
- REDIS_PORT=7003
redis4:
image: publicisworldwide/redis-cluster
network_mode: host
restart: always
volumes:
- /data/redis/7004/data:/data
environment:
- REDIS_PORT=7004
redis5:
image: publicisworldwide/redis-cluster
network_mode: host
restart: always
volumes:
- /data/redis/7005/data:/data
environment:
- REDIS_PORT=7005
redis6:
image: publicisworldwide/redis-cluster
network_mode: host
restart: always
volumes:
- /data/redis/7006/data:/data
environment:
- REDIS_PORT=7006
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这里用的别人一个现成的镜像 publicisworldwide/redis-cluster ，自己制作也可以，后续会发布制作过程，不过不建议自己做，有什么需要更改的可以在现有的镜像基础上进行更改之后commit。镜像可以自己下载，也可以等启动服务的时候他自动下载。
这里用的是host网络模式，redis挂载到之前创建的目录下。
如果不想使用主机模式可以文章开头的链接，具体我这里就不写了，自己看。至于docker-compose的安装网上一大堆文章，这里不赘述。
3.创建文件之后，启动服务
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| root@rede: docker-compose up -d
Creating redis_redis1_1 ... done
Creating redis_redis5_1 ... done
Creating redis_redis4_1 ... done
Creating redis_redis3_1 ... done
Creating redis_redis6_1 ... done
Creating redis_redis2_1 ... done
root@rede: docker-compose ps
Name Command State Ports
---------------------------------------------------------------
redis_redis1_1 /usr/local/bin/entrypoint. ... Up
redis_redis2_1 /usr/local/bin/entrypoint. ... Up
redis_redis3_1 /usr/local/bin/entrypoint. ... Up
redis_redis4_1 /usr/local/bin/entrypoint. ... Up
redis_redis5_1 /usr/local/bin/entrypoint. ... Up
redis_redis6_1 /usr/local/bin/entrypoint. ... Up
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状态都为Up，说明服务均正常启动，如果有状态不正常的容器，看看自己服务器的端口是不是被占用了。
4.redis-cluster集群配置
上述只是启动了6个redis容器，并没有设置集群，随便进入一个redis容器，执行下面的命令，IP替换成自己宿主机的IP
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| root@rede:/data/redis
▶ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
a0c7047c2a0e publicisworldwide/redis-cluster "/usr/local/bin/entr…" 2 minutes ago Up 2 minutes redis_redis3_1
f165a7c962ca publicisworldwide/redis-cluster "/usr/local/bin/entr…" 2 minutes ago Up 2 minutes redis_redis1_1
8ce8ec23974e publicisworldwide/redis-cluster "/usr/local/bin/entr…" 2 minutes ago Up 2 minutes redis_redis4_1
1c37f7b71a21 publicisworldwide/redis-cluster "/usr/local/bin/entr…" 2 minutes ago Up 2 minutes redis_redis6_1
810b0ff90710 publicisworldwide/redis-cluster "/usr/local/bin/entr…" 2 minutes ago Up 2 minutes redis_redis2_1
e5a38e1cc280 publicisworldwide/redis-cluster "/usr/local/bin/entr…" 2 minutes ago Up 2 minutes redis_redis5_1
df94ddfb5d1f zookeeper:3.4.11 "/docker-entrypoint.…" 20 hours ago Up 20 hours 2888/tcp, 3888/tcp, 0.0.0.0:2182->2181/tcp zookeeper_2
5eb43213b27a zookeeper:3.4.11 "/docker-entrypoint.…" 20 hours ago Up 20 hours 2888/tcp, 3888/tcp, 0.0.0.0:2183->2181/tcp zookeeper_3
d17a6180907e zookeeper:3.4.11 "/docker-entrypoint.…" 20 hours ago Up 20 hours 2888/tcp, 0.0.0.0:2181->2181/tcp, 3888/tcp zookeeper_1
root@rede:# docker exec -ti d3a904cc0d5a bash
root@rede:/data# redis-cli --cluster create 192.168.1.100:7001 192.168.1.100:7002 192.168.1.100:7003 192.168.1.100:7004 192.168.1.100:7005 192.168.1.100:7006 --cluster-replicas 1
>>> Performing hash slots allocation on 6 nodes...
Master[0] -> Slots 0 - 5460
Master[1] -> Slots 5461 - 10922
Master[2] -> Slots 10923 - 16383
Adding replica 192.168.1.100:7004 to 192.168.1.100:7001
Adding replica 192.168.1.100:7005 to 192.168.1.100:7002
Adding replica 192.168.1.100:7006 to 192.168.1.100:7003
>>> Trying to optimize slaves allocation for anti-affinity
[WARNING] Some slaves are in the same host as their master
M: 7237efa105ff4246c02da08c0e65c18246755f2f 192.168.1.100:7001
slots:[0-5460] (5461 slots) master
M: 241d6eb2abcd9a6d41db5231fcd80fac1d452bee 192.168.1.100:7002
slots:[5461-10922] (5462 slots) master
M: 493083f2733bc181295f5b9a9fa9bc6fdf821958 192.168.1.100:7003
slots:[10923-16383] (5461 slots) master
S: b60ef6cbea0ae06566d17db4a1b4452e56543419 192.168.1.100:7004
replicates 241d6eb2abcd9a6d41db5231fcd80fac1d452bee
S: b48e546e963f694eac91d49b285040bb2bec5513 192.168.1.100:7005
replicates 493083f2733bc181295f5b9a9fa9bc6fdf821958
S: 259de2d6be917e64cdc01604521da45cc1f8d842 192.168.1.100:7006
replicates 7237efa105ff4246c02da08c0e65c18246755f2f
Can I set the above configuration? (type 'yes' to accept): yes
>>> Nodes configuration updated
>>> Assign a different config epoch to each node
>>> Sending CLUSTER MEET messages to join the cluster
Waiting for the cluster to join
....
>>> Performing Cluster Check (using node 192.168.1.100:7001)
M: 7237efa105ff4246c02da08c0e65c18246755f2f 192.168.1.100:7001
slots:[0-5460] (5461 slots) master
1 additional replica(s)
M: 241d6eb2abcd9a6d41db5231fcd80fac1d452bee 192.168.1.100:7002
slots:[5461-10922] (5462 slots) master
1 additional replica(s)
M: 493083f2733bc181295f5b9a9fa9bc6fdf821958 192.168.1.100:7003
slots:[10923-16383] (5461 slots) master
1 additional replica(s)
S: b60ef6cbea0ae06566d17db4a1b4452e56543419 192.168.1.100:7004
slots: (0 slots) slave
replicates 241d6eb2abcd9a6d41db5231fcd80fac1d452bee
S: 259de2d6be917e64cdc01604521da45cc1f8d842 192.168.1.100:7006
slots: (0 slots) slave
replicates 7237efa105ff4246c02da08c0e65c18246755f2f
S: b48e546e963f694eac91d49b285040bb2bec5513 192.168.1.100:7005
slots: (0 slots) slave
replicates 493083f2733bc181295f5b9a9fa9bc6fdf821958
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
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至此，基于docker部署的redis-cluster集群就已经完成
