redis集群---用docker实现，原来如此简单！

最新推荐文章于 2025-08-27 09:06:09 发布

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该博客详细介绍了如何在Docker环境中部署和配置Redis集群。首先创建网络，然后为每个Redis节点创建配置文件并启动容器。接着通过`redis-cli`创建集群，并设置副本。即使在主节点宕机后，集群仍能正常工作，展示了Redis集群的高可用性。

集群之前，可以去看看docker细节可当文档参考的
docker

redis集群在docker中部署

Redis集群部署

Redis集群部署

bash
[root@node2 ~]# docker network create redisnet --subnet 172.38.0.0/16
4fe816cb13df00a0b1995e669e3a390c4fefbf146f51ec5682558ed1b6e80d2b
[root@node2 ~]# docker network ls
NETWORK ID          NAME                DRIVER              SCOPE
d9a516d963a5        bridge              bridge              local
ac3d1e4721b1        host                host                local
1ef778a2bc22        mynet               bridge              local
fbf4cb17b816        none                null                local
4fe816cb13df        redisnet            bridge              local
[root@node2 redis]# for port in $(seq 1 6); \
> do \
> mkdir -p /mydata/redis-clu/node-${port}/conf
> touch /mydata/redis-clu/node-${port}/conf/redis.conf
> cat << EOF >/mydata/redis-clu/node-${port}/conf/redis.conf
> port 6379
> bind 0.0.0.0
> cluster-enabled yes
> cluster-config-file nodes.conf
> cluster-node-timeout 5000
> cluster-announce-ip 172.38.0.1${port}
> cluster-announce-port 6379
> cluster-announce-bus-port 16379
> appendonly yes
> EOF
> done
[root@node2 redis]# cd /mydata/redis-clu
[root@node2 redis-clu]# ls
node-1  node-2  node-3  node-4  node-5  node-6
#运行6次
[root@node2 redis-clu]# docker run -p 6371:6379 -p 16371:16379 --name redis-1 --restart always \
> -v /mydata/redis-clu/node-1/data:/data \
> -v /mydata/redis-clu/node-1/conf/redis.conf:/etc/redis/redis.conf \
> -d --net redisnet --ip 172.38.0.11 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf
1ab9c167ec147c37906eb6d7727802f0fa9e35afd4c2eb3f04b76b3c518e09d4

[root@node2 redis-clu]# docker ps
CONTAINER ID        IMAGE                    COMMAND                  CREATED              STATUS              PORTS                                              NAMES
4a371b4d4324        redis:5.0.9-alpine3.11   "docker-entrypoint.s…"   19 seconds ago       Up 18 seconds       0.0.0.0:6376->6379/tcp, 0.0.0.0:16376->16379/tcp   redis-6
eda78cd16967        redis:5.0.9-alpine3.11   "docker-entrypoint.s…"   39 seconds ago       Up 38 seconds       0.0.0.0:6375->6379/tcp, 0.0.0.0:16375->16379/tcp   redis-5
c889d11e9752        redis:5.0.9-alpine3.11   "docker-entrypoint.s…"   About a minute ago   Up 59 seconds       0.0.0.0:6374->6379/tcp, 0.0.0.0:16374->16379/tcp   redis-4
701b53817b79        redis:5.0.9-alpine3.11   "docker-entrypoint.s…"   About a minute ago   Up About a minute   0.0.0.0:6373->6379/tcp, 0.0.0.0:16373->16379/tcp   redis-3
f8ea3ea1bc3e        redis:5.0.9-alpine3.11   "docker-entrypoint.s…"   About a minute ago   Up About a minute   0.0.0.0:6372->6379/tcp, 0.0.0.0:16372->16379/tcp   redis-2
1ab9c167ec14        redis:5.0.9-alpine3.11   "docker-entrypoint.s…"   4 minutes ago        Up 4 minutes        0.0.0.0:6371->6379/tcp, 0.0.0.0:16371->16379/tcp   redis-1
#进入redis-1容器
[root@node2 redis-clu]# docker exec -it redis-1 /bin/sh

#配置集群
/data # redis-cli --cluster create 172.38.0.11:6379 172.38.0.12:6379 172.38.0.13:6379 172.38.0.14:6379 172.38.0.15:6379 172.38.0.16:6379 --cluster-replicas 1 

yes

#登录redis客户端
/data # redis-cli -c
#查看集群信息
127.0.0.1:6379> cluster info
cluster_state:ok
cluster_slots_assigned:16384
cluster_slots_ok:16384
cluster_slots_pfail:0
cluster_slots_fail:0
cluster_known_nodes:6
cluster_size:3
cluster_current_epoch:6
cluster_my_epoch:1
cluster_stats_messages_ping_sent:125
cluster_stats_messages_pong_sent:132
cluster_stats_messages_sent:257
cluster_stats_messages_ping_received:127
cluster_stats_messages_pong_received:125
cluster_stats_messages_meet_received:5
cluster_stats_messages_received:257
#查看节点
127.0.0.1:6379> cluster nodes
a36a37a557d01f480e61dbb78405bf68eadb1d06 172.38.0.15:6379@16379 slave 67a67c55c77b895418a8134e02a5bb34222bf9d8 0 1609842736000 5 connected
76bc687c46336a33bc52f4d0fce9f72550bc3038 172.38.0.13:6379@16379 master - 0 1609842737508 3 connected 10923-16383
67a67c55c77b895418a8134e02a5bb34222bf9d8 172.38.0.11:6379@16379 myself,master - 0 1609842735000 1 connected 0-5460
5d92685f37cd561e6f497fb85befd85baa8c8fbf 172.38.0.14:6379@16379 slave 76bc687c46336a33bc52f4d0fce9f72550bc3038 0 1609842736504 4 connected
264b4c367f09d6916564ab0b3ccce1a318185ba6 172.38.0.16:6379@16379 slave 3fe63d14dfe3391b927a401dee0da0f125dcab53 0 1609842735501 6 connected
3fe63d14dfe3391b927a401dee0da0f125dcab53 172.38.0.12:6379@16379 master - 0 1609842736003 2 connected 5461-10922

127.0.0.1:6379> set a b
-> Redirected to slot [15495] located at 172.38.0.13:6379
OK
172.38.0.13:6379> get a
"b"
#-------------------------------------------------------
#停掉主机redis-03
[root@node2 ~]# docker stop redis-3

#-------------------------------------------------------
# 集群成功  依然可以获取值 在redis-4机器上
/data # redis-cli -c
127.0.0.1:6379> get a
-> Redirected to slot [15495] located at 172.38.0.14:6379
"b"
#重新查看节点
172.38.0.14:6379> cluster nodes

在这里插入图片描述
脚本

for port in $(seq 1 6); \
do \
mkdir -p /mydata/redis-clu/node-${port}/conf
touch /mydata/redis-clu/node-${port}/conf/redis.conf
cat << EOF >/mydata/redis-clu/node-${port}/conf/redis.conf
port 6379
bind 0.0.0.0
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
cluster-announce-ip 172.38.0.1${port}
cluster-announce-port 6379
cluster-announce-bus-port 16379
appendonly yes
EOF
done


docker run -p 637${port}:6379 -p 1637${port}:16379 --name redis-${port} --restart always \
-v /mydata/redis-clu/node-${port}/data:/data \
-v /mydata/redis-clu/node-${port}/conf/redis.conf:/etc/redis/redis.conf \
-d --net redisnet --ip 172.38.0.1${port} redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf; \

docker run -p 6371:6379 -p 16371:16379 --name redis-1 --restart always \
-v /mydata/redis-clu/node-1/data:/data \
-v /mydata/redis-clu/node-1/conf/redis.conf:/etc/redis/redis.conf \
-d --net redisnet --ip 172.38.0.11 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf

docker run -p 6372:6379 -p 16372:16379 --name redis-2 --restart always \
-v /mydata/redis-clu/node-2/data:/data \
-v /mydata/redis-clu/node-2/conf/redis.conf:/etc/redis/redis.conf \
-d --net redisnet --ip 172.38.0.12 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf

docker run -p 6373:6379 -p 16373:16379 --name redis-3 --restart always \
-v /mydata/redis-clu/node-3/data:/data \
-v /mydata/redis-clu/node-3/conf/redis.conf:/etc/redis/redis.conf \
-d --net redisnet --ip 172.38.0.13 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf

docker run -p 6374:6379 -p 16374:16379 --name redis-4 --restart always \
-v /mydata/redis-clu/node-4/data:/data \
-v /mydata/redis-clu/node-4/conf/redis.conf:/etc/redis/redis.conf \
-d --net redisnet --ip 172.38.0.14 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf

docker run -p 6375:6379 -p 16375:16379 --name redis-5 --restart always \
-v /mydata/redis-clu/node-5/data:/data \
-v /mydata/redis-clu/node-5/conf/redis.conf:/etc/redis/redis.conf \
-d --net redisnet --ip 172.38.0.15 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf

docker run -p 6376:6379 -p 16376:16379 --name redis-6 --restart always \
-v /mydata/redis-clu/node-6/data:/data \
-v /mydata/redis-clu/node-6/conf/redis.conf:/etc/redis/redis.conf \
-d --net redisnet --ip 172.38.0.16 redis:5.0.9-alpine3.11 redis-server /etc/redis/redis.conf
    
redis-cli --cluster create 172.38.0.11:6379 172.38.0.12:6379 172.38.0.13:6379 172.38.0.14:6379 172.38.0.15:6379 172.38.0.16:6379 --cluster-replicas 1