像是上面在启动服务时需要注意切换到相应的配置文件的目录下,不然相应端口的服务无法启动,例如我之前在/usr/local/redis目录下启动后只有7000对应的服务启动了。
linux-svnfile:/usr/local/redis # redis-server ../cluster/7000/redis.conf
linux-svnfile:/usr/local/redis # redis-server ../cluster/7001/redis.conf
linux-svnfile:/usr/local/redis # redis-server ../cluster/7002/redis.conf
linux-svnfile:/usr/local/redis # redis-server ../cluster/7003/redis.conf
linux-svnfile:/usr/local/redis # redis-server ../cluster/7004/redis.conf
linux-svnfile:/usr/local/redis # redis-server ../cluster/7005/redis.conf
linux-svnfile:/usr/local/redis # ps -ef | grep redis
root 15144 19064 0 18:37 pts/0 00:00:00 vi redis.conf
root 15590 1 0 18:52 ? 00:00:00 redis-server *:7000 [cluster]
root 15616 19443 0 18:52 pts/1 00:00:00 grep redis
linux-svnfile:/usr/local/cluster #redis-cli -p 7000
127.0.0.1:7000>
删除slave节点
删除master节点
linux-svnfile:/usr/local/redis # redis-trib.rb reshard 127.0.0.1:7001
How many slots do you want to move (from 1 to 16384)? 5461
What is the receiving node ID? 42929649e533ec8aad7cbb81f204f04c849d4bff
Please enter all the source node IDs.
Type 'all' to use all the nodes as source nodes for the hash slots.
Type 'done' once you entered all the source nodes IDs.
Source node #1: 6fe9561e605b7ee85e67a2557f7fb641f482afb4
Source node #2:done
#Do you want to proceed with the proposed reshard plan (yes/no)? yes
说明:
5461表示要删除master所有的slot数量
What is the receiving node ID是指将7000的slot迁移的节点7001的node-id
Source node #1是指要删除的master的node-id
下面可以看到7000的slot为0,而7001多了4561
在删除master节点出现如下面所示的错误,是因为删除master节点之前没有删除master节点的slave节点。
上面是在单台机器上做的集群,下面展示两台机器上做集群,其实也很简单。
参考之前的环境编译源码到另一台机器
在两台机器上编辑配置文件
/usr/local/redis # vi redis.conf
daemonize yes
port 7000
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
cluster-config-file nodes-7001.conf
分别创建目录和文件
linux-svnfile:/usr/local/redis # mkdir -p/usr/local/cluster/{7001..7003}
localhost:/usr/local/redis # mkdir -p/usr/local/cluster/{8001..8003}
linux-svnfile:/usr/local/redis # cpredis.conf ../cluster/7001
linux-svnfile:/usr/local/redis # cpredis.conf ../cluster/7002
linux-svnfile:/usr/local/redis # cpredis.conf ../cluster/7003
localhost:/usr/local/redis # cp redis.conf../cluster/8001
localhost:/usr/local/redis # cp redis.conf../cluster/8002
localhost:/usr/local/redis # cp redis.conf../cluster/8003
修改对应目录的配置文件其中port 和cluster-config-file分别对应各自的目录名,可使用sed命令做修改
sed -i "s/7001/7002/g"
启动服务
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