搭建redis集群环境

环境搭建
redis 
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伪集群，单机上搭建，没多的机器

说明

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Redis3.0版本之后支持Cluster
当前版本3.2.8
redis集群搭建最少6个节点其中3个主节点

修改配置

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接上文redis环境搭建
redis1配置
打开集群配置
port 7001
cluster-enabled yes
cluster-config-file nodes-7001.conf
cluster-node-timeout 5000
redis2配置
port 7002
cluster-enabled yes
cluster-config-file nodes-7002.conf
cluster-node-timeout 5000
redis3配置
port 7003
cluster-enabled yes
cluster-config-file nodes-7003.conf
cluster-node-timeout 5000

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启动redis

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cd redis1
./redis-server redis.conf
cd redis2
./redis-server redis.conf
cd redis3
./redis-server redis.conf

查看服务是否正常

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ps -ef|grep redis 查看redis进程

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创建集群

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官方有提供工具redis-trib.rb，采用ruby编写，so安装ruby

安装ruby

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yum -y install ruby ruby-devel rubygems rpm-build

通过ruby命令工具安装redis

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gem install redis

通过redis-trib.rb 创建集群

查看命令参数

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[root@vultr src]# ./redis-trib.rb 
Usage: redis-trib <command> <options> <arguments ...>
  set-timeout     host:port milliseconds
  reshard         host:port
                  --pipeline <arg>
                  --to <arg>
                  --yes
                  --slots <arg>
                  --from <arg>
                  --timeout <arg>
  del-node        host:port node_id
  add-node        new_host:new_port existing_host:existing_port
                  --slave
                  --master-id <arg>
  fix             host:port
                  --timeout <arg>
  help            (show this help)
  rebalance       host:port
                  --pipeline <arg>
                  --simulate
                  --auto-weights
                  --use-empty-masters
                  --weight <arg>
                  --timeout <arg>
                  --threshold <arg>
  check           host:port
  info            host:port
  create          host1:port1 ... hostN:portN
                  --replicas <arg>
  import          host:port
                  --replace
                  --copy
                  --from <arg>
  call            host:port command arg arg .. arg
For check, fix, reshard, del-node, set-timeout you can specify the host and port of any working node in the cluster.

创建集群，出错

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./redis-trib.rb  create  --replicas  1  127.0.0.1:7001 127.0.0.1:7002  127.0.0.1:7003 
*** ERROR: Invalid configuration for cluster creation.
*** Redis Cluster requires at least 3 master nodes.
*** This is not possible with 3 nodes and 1 replicas per node.
*** At least 6 nodes are required.
至少需要6个节点

开始创建节点
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重新创建redis集群
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测试

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1.通过redis-cli链接redis redis-cli -c -p 7001
[root@vultr bin]# redis-cli -c -p 7001
127.0.0.1:7001> set name kite
-> Redirected to slot [5798] located at 127.0.0.1:7002
OK
127.0.0.1:7002> get name
"kite"
127.0.0.1:7002> exit
[root@vultr bin]# redis-cli -c -p 7003
127.0.0.1:7003> get name
-> Redirected to slot [5798] located at 127.0.0.1:7002
"kite"
127.0.0.1:7002> 
已经进行同步

参考

Redis 3.2.1集群搭建