由于通过redis-trib.rb工具构建Redis Cluster，需要rudy环境，执行如下命令安装：
yum -y install zlib ruby rubygems
安装ruby 的redis库：
gem install redis
3.安装redis 3.0
wget
tar -zxvf redis-3.0.0.tar.gz
mkdir redis
cd redis-3.0.0
make PREFIX=/home/slim/redis
make PREFIX=/home/slim/redis install
将集群工具复制到/home/slim/redis/bin下
cp /home/slim/redis-3.0.0/src/redis-trib.rb ./bin/
创建数据配置目录
mkdir -p /home/slim/redis/{conf,data,logs}
4.配置
在2台机器上配置如下：
cd /home/slim/redis
cp /home/slim/redis-3.0.0/redis.conf ./conf/redis-6380.conf
cp /home/slim/redis-3.0.0/redis.conf ./conf/redis-6381.conf
cp /home/slim/redis-3.0.0/redis.conf ./conf/redis-6382.conf
修改配置：
#基本配置
daemonize yes
pidfile /home/slim/redis/data/redis-6380.pid
port 6380
bind 192.168.36.189
unixsocket /home/slim/redis/data/redis-6380.sock
unixsocketperm 700
timeout 300
loglevel verbose
logfile /home/slim/redis/logs/redis-6380.log
databases 16
dbfilename dump-6380.rdb
dir /home/slim/redis/data/
#aof持久化
appendonly yes
appendfilename appendonly-6380.aof
appendfsync everysec
no-appendfsync-on-rewrite yes
auto-aof-rewrite-percentage 80-100
auto-aof-rewrite-min-size 64mb
lua-time-limit 5000
#集群配置
cluster-enabled yes
cluster-config-file /home/slim/redis/data/nodes-6380.conf
cluster-node-timeout 5000
每个实例配置类似，修改一下都应端口、IP地址、文件名称即可。
Redis集群由多个运行在集群模式（cluster mode）下的Redis实例组成，实例的集群模式需要通过配置来开启，开启集群模式的实例将可以使用集群特有的功能和命令。要让集群正常运作至少需要三个主节点， 不过在刚开始试用集群功能时， 强烈建议使用六个节点： 其中三个为主节点， 而其余三个则是各个主节点的从节点。
cluster-enabled：开实例的集群模式
cluster-conf-file：设定了保存节点配置文件的路径，默认值为nodes.conf。节点配置文件无须人为修改，它由Redis集群在启动时创建，并在有需要时自动进行更新。
cluster-node-timeout：集群节点互连超时的阀值
5.启动服务
1）启动2台机器实例
./bin/redis-server ./conf/redis-6380.conf ;tail -f logs/redis-6380.log
./bin/redis-server ./conf/redis-6381.conf ;tail -f logs/redis-6381.log
./bin/redis-server ./conf/redis-6382.conf ;tail -f logs/redis-6382.log
启动日志中打印：
“8591:M 11 Apr 22:20:46.134 * No cluster configuration found, I'm 83fc65283bbbb71b4c089337df05594d67f4cab6”
每个节点都使用 ID 而不是 IP 或者端口号来记录其他节点， 因为 IP 地址和端口号都可能会改变， 而这个独一无二的标识符（identifier）则会在节点的整个生命周期中一直保持不变。
查看启动进程：
ps -ef | grep redis
slim 8525 1 0 22:16 ? 00:00:01 ./bin/redis-server 192.168.36.54:6380 [cluster]
slim 8544 1 0 22:17 ? 00:00:00 ./bin/redis-server 192.168.36.54:6381 [cluster]
slim 8591 1 0 22:20 ? 00:00:00 ./bin/redis-server 192.168.36.54:6382 [cluster]
2）集群配置
在每台机器上启动的redis服务都是相互独立，下面我们就使用redis-trib.rb工具构建Redis Cluster。
./bin/redis-trib.rb create --replicas 1 192.168.36.54:6380 192.168.36.54:6381 192.168.36.54:6382 192.168.36.189:6380 192.168.36.189:6381 192.168.36.189:6382
命令的意义如下：
给定 redis-trib.rb 程序的命令是 create ， 这表示我们希望创建一个新的集群。
选项 --replicas 1 表示我们希望为集群中的每个主节点创建一个从节点。
之后跟着的其他参数则是实例的地址列表， 我们希望程序使用这些地址所指示的实例来创建新集群。
简单来说， 以上命令的意思就是让 redis-trib 程序创建一个包含三个主节点和三个从节点的集群。
启动日志：
>>> Creating cluster
Connecting to node 192.168.36.54:6380: OK
Connecting to node 192.168.36.54:6381: OK
Connecting to node 192.168.36.54:6382: OK
Connecting to node 192.168.36.189:6380: OK
Connecting to node 192.168.36.189:6381: OK
Connecting to node 192.168.36.189:6382: OK
>>> Performing hash slots allocation on 6 nodes...
Using 3 masters:
192.168.36.54:6380
192.168.36.189:6380
192.168.36.54:6381
Adding replica 192.168.36.189:6381 to 192.168.36.54:6380
Adding replica 192.168.36.54:6382 to 192.168.36.189:6380
Adding replica 192.168.36.189:6382 to 192.168.36.54:6381
M: f6285c8a7506b224840d7b26b2b5d1671320c21f 192.168.36.54:6380
slots:0-5460 (5461 slots) master
M: 26ce71d626175f88e0416e3f45b2bfb29304c7b3 192.168.36.54:6381
slots:10923-16383 (5461 slots) master
S: 83fc65283bbbb71b4c089337df05594d67f4cab6 192.168.36.54:6382
replicates b1a15a3cd14ea65671a7134850e17b8919a17da5
M: b1a15a3cd14ea65671a7134850e17b8919a17da5 192.168.36.189:6380
slots:5461-10922 (5462 slots) master
S: 1080e423a55a2c24dae649dac03ffa09ed26d3e8 192.168.36.189:6381
replicates f6285c8a7506b224840d7b26b2b5d1671320c21f
S: de4302f43ff89843675446396552fd19f741246a 192.168.36.189:6382
replicates 26ce71d626175f88e0416e3f45b2bfb29304c7b3
Can I set the above configuration? (type 'yes' to accept): yes
>>> Nodes configuration updated
>>> Assign a different config epoch to each node
>>> Sending CLUSTER MEET messages to join the cluster
Waiting for the cluster to join...
>>> Performing Cluster Check (using node 192.168.36.54:6380)
M: f6285c8a7506b224840d7b26b2b5d1671320c21f 192.168.36.54:6380
slots:0-5460 (5461 slots) master
M: 26ce71d626175f88e0416e3f45b2bfb29304c7b3 192.168.36.54:6381
slots:10923-16383 (5461 slots) master
M: 83fc65283bbbb71b4c089337df05594d67f4cab6 192.168.36.54:6382
slots: (0 slots) master
replicates b1a15a3cd14ea65671a7134850e17b8919a17da5
M: b1a15a3cd14ea65671a7134850e17b8919a17da5 192.168.36.189:6380
slots:5461-10922 (5462 slots) master
M: 1080e423a55a2c24dae649dac03ffa09ed26d3e8 192.168.36.189:6381
slots: (0 slots) master
replicates f6285c8a7506b224840d7b26b2b5d1671320c21f
M: de4302f43ff89843675446396552fd19f741246a 192.168.36.189:6382
slots: (0 slots) master
replicates 26ce71d626175f88e0416e3f45b2bfb29304c7b3
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.从启动日志可以看出有6个集群实例，主节点为：
192.168.36.54:6380
192.168.36.189:6380
192.168.36.54:6381
每个主节点对应一个从节点
Adding replica 192.168.36.189:6381 to 192.168.36.54:6380
Adding replica 192.168.36.54:6382 to 192.168.36.189:6380
Adding replica 192.168.36.189:6382 to 192.168.36.54:6381
slots划分：
192.168.36.54:6380 0-5460
192.168.36.189:6380 5461-10922
192.168.36.54:6381 10923-16383
一共16384 slots
注：redis-trib.rb使用参数
Usage: redis-trib <command> <options> <arguments ...>