环境：
两台centos 6.5 服务器
IP：172.16.57.96
IP：172.16.57.97
步骤：
1、环境安装
yum -y install make automake gcc gcc-c++ libstdc++-devel tcl ruby rubygems zlib-devel openssl-devel curl echo never > /sys/kernel/mm/transparent_hugepage/enabled echo "vm.overcommit_memory = 1" >> /etc/sysctl.conf sysctl -p
2、下载
cd /usr/local/src wget http://download.redis.io/releases/redis-3.0.5.tar.gz
3 步骤
cd /usr/local/src tar zxvf redis-3.0.5.tar.gz cd redis-3.0.5 make MALLOC=libc make install PREFIX=/usr/redis-cluster/
4、配置端口
cd /usr/redis-cluster/ cp -r bin 7000 cp -r bin 7001 cp -r bin 7002 cp -r /usr/local/src/redis-3.0.5/redis.conf 7000/ cp -r /usr/local/src/redis-3.0.5/redis.conf 7001/ cp -r /usr/local/src/redis-3.0.5/redis.conf 7002/
4-1、增加环境变量vim /etc/profile
export PATH=/usr/redis-cluster/bin:$PATH source /etc/profile
5、配置文件修改 vim 7000/redis.conf （其他两个目录均需要修改）
daemonize yes pidfile /var/run/redis_7000.pid port 7000 appendonly yes cluster-enabled yes cluster-config-file nodes.conf cluster-node-timeout 15000
6、启动脚本
#!/bin/bash allpath="/usr/redis-cluster" cd $allpath/7000 ./redis-server redis.conf cd $allpath/7001 ./redis-server redis.conf cd $allpath/7002 ./redis-server redis.conf
7、启动服务
chmod 777 redis-start-all.sh sh redis-start-all.sh
8、检查
ps -ef |grep redis netstat -nuplt
在另外节点服务器上分别执行以上操作（1、2、3执行，4、5、6、7可以从配置好的这台拷贝更新）。
确保以上节点中redis服务已经正常启动。
下面开始集群操作
9、集群操作
9.1 执行命令：
cd /usr/redis-cluster/ gem install redis-3.0.5.gem gem install redis --version 3.0.5 #时间有点久，耐心等待
注意：gem install redis --version 3.0.0 失败的话，需要修改一下gem的源
gem sources --remove https://rubygems.org/ gem sources -a https://ruby.taobao.org/
手工下载并安装：
wget https://rubygems.global.ssl.fastly.net/gems/redis-3.2.1.gem gem install -l ./redis-3.2.1.gem cp -r /usr/local/src/redis-3.0.5/src/redis-trib.rb ./
执行的集群操作命令：
./redis-trib.rb create --replicas 1 172.16.57.96:7000 172.16.57.96:7001 172.16.57.96:7002 172.16.57.97:7000 172.16.57.97:7001 172.16.57.97:7002 #--replicas 1 此处1为每个主节点后面都有一个从节点 #--replicas 0 此处0为没有从节点
Using 3 masters:
172.16.57.97:7000
172.16.57.96:7000
172.16.57.97:7001
以上三个作为集群主节点
9.2 根据提示，在 Can I set the above configuration? (type 'yes' to accept): yes （此处输入yes 回车）
[OK] All nodes agree about slots configuration.
>>> Check for open slots...
>>> Check slots coverage...
[OK] All 16384 slots covered.
提示以上信息则完成。
10、 集群验证
执行命令：
cd /usr/redis-cluster/bin
./redis-cli -c -p 7001
127.0.0.1:7001> set name andy
-> Redirected to slot [5798] located at 172.16.57.96:7000
OK
172.16.57.96:7000> get name
"andy"
登录另外一台或者链接不同端口：
cd /usr/redis-cluster/bin
./redis-cli -c -h 172.16.57.97 -p 7002
172.16.57.97:7002> get name
-> Redirected to slot [5798] located at 172.16.57.96:7000
"andy"
172.16.57.96:7000>
返回 name 值为 andy 即可
命令
redis-cli -c -p 7000
> cluster info
> cluster nodes
故障问题
1 报错 Connecting to node 172.16.57.97:7000: OK
[ERR] Node 172.16.57.97:7000 is not empty. Either the node already knows other nodes (check with CLUSTER NODES) or contains some key in database 0.
解决步骤：
killall redis-server find ./700* -type f -name "appendonly*" -o -name "nodes*" -o -name "dump.rdb" find ./700* -type f -name "appendonly*" -o -name "nodes*" -o -name "dump.rdb" |xargs rm -rf
然后重新执行集群命令
2 Redis的Cluster集群的时候，在执行gem install redis时，提示如下错误：
gem install redis ERROR: Error installing redis: redis requires Ruby version >= 2.2.2.
yum库中ruby的版本支持到 2.0.0，可gem 安装redis需要最低是2.2.2，采用rvm来更新ruby：
1、安装RVM（具体命令可以查看官网，Ruby官网地址 和 Ruby官网安装教程）：
复制代码
//具体RVM安装命令地址：http://rvm.io/
[root@linux ~]# gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E37D2BAF1CF37B13E2069D6956105BD0E739499BDB [root@linux ~]# curl -sSL https://get.rvm.io | bash -s stable [root@linux ~]# find / -name rvm -print
复制代码
/usr/local/rvm /usr/local/rvm/src/rvm /usr/local/rvm/src/rvm/bin/rvm /usr/local/rvm/src/rvm/lib/rvm /usr/local/rvm/src/rvm/scripts/rvm /usr/local/rvm/bin/rvm /usr/local/rvm/lib/rvm /usr/local/rvm/scripts/rvm [root@linux ~]# source /usr/local/rvm/scripts/rvm
2、查看rvm库中已知的ruby版本：
[root@linux ~]# rvm list known MRI Rubies [ruby-]1.8.6[-p420] [ruby-]1.8.7[-head] # security released on head [ruby-]1.9.1[-p431] [ruby-]1.9.2[-p330] [ruby-]1.9.3[-p551] [ruby-]2.0.0[-p648] [ruby-]2.1[.10] [ruby-]2.2[.7] [ruby-]2.3[.4] [ruby-]2.4[.1] ruby-head ….
3、安装一个ruby版本：
[root@linux ~]# rvm install 2.4.1 Searching for binary rubies, this might take some time. Found remote file https://rvm_io.global.ssl.fastly.net/binaries/centos/7/x86_64/ruby-2.4.1.tar.bz2 Checking requirements for centos. Requirements installation successful. ruby-2.4.1 - #configure ruby-2.4.1 - #download % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 14.1M 100 14.1M 0 0 97k 0 0:02:27 0:02:27 --:--:-- 159k No checksum for downloaded archive, recording checksum in user configuration. ruby-2.4.1 - #validate archive ruby-2.4.1 - #extract ruby-2.4.1 - #validate binary ruby-2.4.1 - #setup ruby-2.4.1 - #gemset created /usr/local/rvm/gems/ruby-2.4.1@global ruby-2.4.1 - #importing gemset /usr/local/rvm/gemsets/global.gems.............................. ruby-2.4.1 - #generating global wrappers........ ruby-2.4.1 - #gemset created /usr/local/rvm/gems/ruby-2.4.1 ruby-2.4.1 - #importing gemsetfile /usr/local/rvm/gemsets/default.gems evaluated to empty gem list ruby-2.4.1 - #generating default wrappers........
4、使用一个ruby版本：
[root@linux ~]# rvm use 2.4.1
Using /usr/local/rvm/gems/ruby-2.4.1
5、设置默认版本：(设置ruby2.4.1为默认的ruby，因为还安装有1.8.3)
[root@linux ~]# rvm use 2.4.1 --default
Using /usr/local/rvm/gems/ruby-2.4.1
6、卸载一个已知版本：
[root@linux ~]# rvm remove 2.3.4
7、查看ruby版本：
[root@linux ~]# ruby --version
ruby 2.4.1p111 (2017-03-22 revision 58053) [x86_64-linux]
8、安装redis：
[root@linux ~]# gem install redis
Fetching: redis-4.0.1.gem (100%)
Successfully installed redis-4.0.1
Parsing documentation for redis-4.0.1
Installing ri documentation for redis-4.0.1
Done installing documentation for redis after 3 seconds
1 gem installed