redis3.0.0 集群安装步骤
Redis集群部署文档(centos6系统)
(要让集群正常工作至少需要3个主节点,在这里我们要创建6个redis节点,其中三个为主节点,三个为从节点,对应的redis节点的ip和端口对应关系如下)
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
1:下载redis。官网下载3.0.0版本,之前2.几的版本不支持集群模式
下载地址:https://github.com/antirez/redis/archive/3.0.0-rc2.tar.gz
2:上传服务器,解压,编译
tar -zxvf redis-3.0.0-rc2.tar.gz mv redis-3.0.0-rc2.tar.gz redis3.0 cd /usr/local/redis3.0 make make install |
3:创建集群需要的目录
mkdir -p /usr/local/cluster cd /usr/local/cluster mkdir 7000 mkdir 7001 mkdir 7002 mkdir 7003 mkdir 7004 mkdir 7005 |
4:修改配置文件redis.conf
cp /usr/local/redis3.0/redis.conf /usr.local/cluster vi redis.conf ##修改配置文件中的下面选项 port 7000 daemonize yes cluster-enabled yes cluster-config-file nodes.conf cluster-node-timeout 5000 appendonly yes ##修改完redis.conf配置文件中的这些配置项之后把这个配置文件分别拷贝到7000/7001/7002/7003/7004/7005目录下面 cp /usr/local/cluster/redis.conf /usr/local/cluster/7000 cp /usr/local/cluster/redis.conf /usr/local/cluster/7001 cp /usr/local/cluster/redis.conf /usr/local/cluster/7002 cp /usr/local/cluster/redis.conf /usr/local/cluster/7003 cp /usr/local/cluster/redis.conf /usr/local/cluster/7004 cp /usr/local/cluster/redis.conf /usr/local/cluster/7005 ##注意:拷贝完成之后要修改7001/7002/7003/7004/7005目录下面redis.conf文件中的port参数,分别改为对应的文件夹的名称 |
5:分别启动这6个redis实例
cd /usr/local/cluster/7000 redis-server redis.conf cd /usr/local/cluster/7001 redis-server redis.conf cd /usr/local/cluster/7002 redis-server redis.conf cd /usr/local/cluster/7003 redis-server redis.conf cd /usr/local/cluster/7004 redis-server redis.conf cd /usr/local/cluster/7005 redis-server redis.conf ##启动之后使用命令查看redis的启动情况ps -ef|grep redis 如下图显示则说明启动成功 |
6:执行redis的创建集群命令创建集群
cd /usr/local/redis3.0/src ./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 |
6.1执行上面的命令的时候会报错,因为是执行的ruby的脚本,需要ruby的环境
错误内容:/usr/bin/env: ruby: No such file or directory
所以需要安装ruby的环境,这里推荐使用yum install ruby安装
yum install ruby |
6.2然后再执行第6步的创建集群命令,还会报错,提示缺少rubygems组件,使用yum安装
错误内容:
./redis-trib.rb:24:in `require': no such file to load -- rubygems (LoadError)
from ./redis-trib.rb:24
yum install rubygems |
6.3再次执行第6步的命令,还会报错,提示不能加载redis,是因为缺少redis和ruby的接口,使用gem 安装
错误内容:
/usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `gem_original_require': no such file to load -- redis (LoadError)
from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
from ./redis-trib.rb:25
gem install redis |
6.4 再次执行第6步的命令,正常执行
输入yes,然后配置完成。
至此redis集群即搭建成功!
测试:
redis-cli -c -p 7000 redis 127.0.0.1:7000> set foo bar -> Redirected to slot [12182] located at 127.0.0.1:7002 OK redis 127.0.0.1:7002> set hello world -> Redirected to slot [866] located at 127.0.0.1:7000 OK redis 127.0.0.1:7000> get foo -> Redirected to slot [12182] located at 127.0.0.1:7002 "bar" redis 127.0.0.1:7000> get hello -> Redirected to slot [866] located at 127.0.0.1:7000 "world"