Docker安装Redis集群

若要让集群正常运作至少需要三个主节点，每个主节点附带一个从节点，所以一共六个节点。端口为7000-7005。
1、创建配置文件目录

mkdir /mydata/redis
cd /mydata/redis
mkdir 7000 7001 7002 7003 7004 7005

2、redis.conf配置

port 7000   			
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes

配置文件中的 cluster-enabled 选项用于开实例的集群模式， 而 cluster-conf-file 选项则设定了保存节点配置文件的路径， 默认值为 nodes.conf。该节点配置文件无须人为修改，它由Redis集群在启动时自动创建， 并在有需要时自动进行更新。

cat <<EOF >7000/redis.conf
port 7000
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
EOF

cat <<EOF >7001/redis.conf
port 7001
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
EOF

cat <<EOF >7002/redis.conf
port 7002
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
EOF

cat <<EOF >7003/redis.conf
port 7003
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
EOF

cat <<EOF >7004/redis.conf
port 7004
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
EOF

cat <<EOF >7005/redis.conf
port 7005
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
EOF

启动Redis实例

docker run -d --name redis7000 \
-v /mydata/redis/7000/redis.conf:/redis.conf \
--net=host \
--restart=always \
redis \
redis-server /redis.conf

docker run -d --name redis7001 \
-v /mydata/redis/7001/redis.conf:/redis.conf \
--net=host \
--restart=always \
redis \
redis-server /redis.conf

docker run -d --name redis7002 \
-v /mydata/redis/7002/redis.conf:/redis.conf \
--net=host \
--restart=always \
redis \
redis-server /redis.conf

docker run -d --name redis7003 \
-v /mydata/redis/7003/redis.conf:/redis.conf \
--net=host \
--restart=always \
redis \
redis-server /redis.conf

docker run -d --name redis7004 \
-v /mydata/redis/7004/redis.conf:/redis.conf \
--net=host \
--restart=always \
redis \
redis-server /redis.conf

docker run -d --name redis7005 \
-v /mydata/redis/7005/redis.conf:/redis.conf \
--net=host \
--restart=always \
redis \
redis-server /redis.conf

执行命令配置集群

# 进入容器执行集群配置命令
docker exec -it redis7000 \
redis-cli --cluster create \
192.168.31.252:7000 192.168.31.252:7001 \
192.168.31.252:7002 192.168.31.252:7003 \
192.168.31.252:7004 192.168.31.252:7005 \
--cluster-replicas 1

查看集群信息

docker exec -it redis7000 redis-cli -c -p 7000

cluster info

cluster nodes

参考地址：https://blog.csdn.net/weixin_38305440/article/details/119374989