1，准备ruby环境
安装ruby
wget https://cache.ruby-lang.org/pub/ruby/2.4/ruby-2.4.1.tar.gz tar xvf ruby-2.4.1.tar.gz cd ruby-2.4.1.tar.gz cd ruby-2.4.1 ./configure --prefix=/usr/local/ruby make make install cp bin/ruby /usr/local/bin/ cp bin/gem /usr/local/bin/
安装rubygem redis依赖：
wget http://rubygems.org/downloads/redis-3.3.0.gem gem install -l redis-3.3.0.gem gem list | grep redis
安装redis-trib.rb:
cp /opt/redis/redis-3.2.4/src/redis-trib.rb /usr/local/bin/
/opt/redis/redis-3.2.4/目录对应的redis源码包解压目录
2，准备集群节点
在普通redis配置文件中加上这三项即可：
cluster-enabled yes #开启群集模式 cluster-node-timeout 15000 #节点超时时间，单位为毫秒 cluster-config-file "nodes-6379.conf" #指定集群内部的配置文件
ll /data/app/redis3.2.4/conf -rw-r--r--. 1 root root 2229 Jul 11 01:50 redis_6479.conf -rw-r--r--. 1 root root 2229 Jul 11 01:50 redis_6480.conf -rw-r--r--. 1 root root 2229 Jul 11 01:51 redis_6481.conf -rw-r--r--. 1 root root 2229 Jul 11 01:51 redis_6482.conf -rw-r--r--. 1 root root 2229 Jul 11 01:51 redis_6483.conf -rw-r--r--. 1 root root 2229 Jul 11 01:51 redis_6484.conf
启动节点：
redis-server redis_6479.conf redis-server redis_6480.conf redis-server redis_6481.conf redis-server redis_6482.conf redis-server redis_6483.conf redis-server redis_6484.conf
3,创建集群
redis-trib.rb create --replicas 1 127.0.0.1:6479 127.0.0.1:6480 127.0.0.1:6481 127.0.0.1:6482 127.0.0.1:6483 127.0.0.1:6484
# --replicas 1 代表每个主节点配置多少个从节点
>>> Creating cluster
/usr/local/ruby/lib/ruby/gems/2.4.0/gems/redis-3.3.0/lib/redis/client.rb:459: warning: constant ::Fixnum is deprecated
>>> Performing hash slots allocation on 6 nodes...
Using 3 masters:
127.0.0.1:6479
127.0.0.1:6480
127.0.0.1:6481
Adding replica 127.0.0.1:6482 to 127.0.0.1:6479
Adding replica 127.0.0.1:6483 to 127.0.0.1:6480
Adding replica 127.0.0.1:6484 to 127.0.0.1:6481
M: 78581cf153d821c734c238d00f4de264fc95072e 127.0.0.1:6479
slots:0-5460 (5461 slots) master
M: d0d4a89f567aed7caa4b87e78be2b6b1b86d02d3 127.0.0.1:6480
slots:5461-10922 (5462 slots) master
M: e71eae6b79e529997fb7716da6d20be68e76830d 127.0.0.1:6481
slots:10923-16383 (5461 slots) master
S: cd2f4e96f575b7b84d48144e832bf7cd6fcd8fc1 127.0.0.1:6482
replicates 78581cf153d821c734c238d00f4de264fc95072e
S: 89e54b0f1fd33adf5ef624104e7d17bb93785b3d 127.0.0.1:6483
replicates d0d4a89f567aed7caa4b87e78be2b6b1b86d02d3
S: b1ad93513254bb6bcb3cc6166afc7d4a89458802 127.0.0.1:6484
replicates e71eae6b79e529997fb7716da6d20be68e76830d
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 127.0.0.1:6479)
M: 78581cf153d821c734c238d00f4de264fc95072e 127.0.0.1:6479
slots:0-5460 (5461 slots) master
1 additional replica(s)
S: cd2f4e96f575b7b84d48144e832bf7cd6fcd8fc1 127.0.0.1:6482
slots: (0 slots) slave
replicates 78581cf153d821c734c238d00f4de264fc95072e
S: b1ad93513254bb6bcb3cc6166afc7d4a89458802 127.0.0.1:6484
slots: (0 slots) slave
replicates e71eae6b79e529997fb7716da6d20be68e76830d
M: d0d4a89f567aed7caa4b87e78be2b6b1b86d02d3 127.0.0.1:6480
slots:5461-10922 (5462 slots) master
1 additional replica(s)
M: e71eae6b79e529997fb7716da6d20be68e76830d 127.0.0.1:6481
slots:10923-16383 (5461 slots) master
1 additional replica(s)
S: 89e54b0f1fd33adf5ef624104e7d17bb93785b3d 127.0.0.1:6483
slots: (0 slots) slave
replicates d0d4a89f567aed7caa4b87e78be2b6b1b86d02d3
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
4，集群完整性检查
redis-trib.rb check 127.0.0.1:6479
/usr/local/ruby/lib/ruby/gems/2.4.0/gems/redis-3.3.0/lib/redis/client.rb:459: warning: constant ::Fixnum is deprecated
>>> Performing Cluster Check (using node 127.0.0.1:6479)
M: 78581cf153d821c734c238d00f4de264fc95072e 127.0.0.1:6479
slots:0-5460 (5461 slots) master
1 additional replica(s)
S: cd2f4e96f575b7b84d48144e832bf7cd6fcd8fc1 127.0.0.1:6482
slots: (0 slots) slave
replicates 78581cf153d821c734c238d00f4de264fc95072e
S: b1ad93513254bb6bcb3cc6166afc7d4a89458802 127.0.0.1:6484
slots: (0 slots) slave
replicates e71eae6b79e529997fb7716da6d20be68e76830d
M: d0d4a89f567aed7caa4b87e78be2b6b1b86d02d3 127.0.0.1:6480
slots:5461-10922 (5462 slots) master
1 additional replica(s)
M: e71eae6b79e529997fb7716da6d20be68e76830d 127.0.0.1:6481
slots:10923-16383 (5461 slots) master
1 additional replica(s)
S: 89e54b0f1fd33adf5ef624104e7d17bb93785b3d 127.0.0.1:6483
slots: (0 slots) slave
replicates d0d4a89f567aed7caa4b87e78be2b6b1b86d02d3
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
当看到[OK] All 16384 slots covered.时代表集群所有的槽位都已经分配出去。