官方详细介绍请移步：http://www.redis.cn/topics/cluster-tutorial.html
这里总结性给出搭建步骤：
1、 至少6个节点，三主三从
2、 编译redis源码
3、放置集群的配置文件redis.conf
port 7000
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
创建工作目录：
mkdir cluster-test
cd cluster-test
mkdir 7000 7001 7002 7003 7004 7005
每个文件夹下新建redis.conf 改变端口，把二进制redis-server复制到cluster-test
tree /cluster-test/
├── 7000
│?? └── redis.conf
├── 7001
│?? └── redis.conf
├── 7002
│?? └── redis.conf
├── 7003
│?? └── redis.conf
├── 7004
│?? └── redis.conf
├── 7005
│?? └── redis.conf
└── redis-server
4、启动各redis节点
依次进入7000,7001等，执行：
cd 7000
../redis-server ./redis.conf
启动6个节点
安装ruby
yum install ruby
安装ruby访问redis的客户端：
gem install redis
5、使用脚本创建redis集群
./redis-trib.rb create --replicas 1 127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005
集群简单测试：
[root@manager1 src]# ./redis-cli -c -p 7000 127.0.0.1:7000> set foo bar -> Redirected to slot [12182] located at 127.0.0.1:7002 OK 127.0.0.1:7002> set hello world -> Redirected to slot [866] located at 127.0.0.1:7000 OK 127.0.0.1:7000> get foo -> Redirected to slot [12182] located at 127.0.0.1:7002 "bar" 127.0.0.1:7002> get foo "bar" 127.0.0.1:7002> get hello -> Redirected to slot [866] located at 127.0.0.1:7000 "world" 127.0.0.1:7000> exit