Redis入门到精通-Redis集群搭建
Redis入门到精通-Redis集群搭建
在Redis3.x之前，提供了sentinel工具来监控各个Master的状态，如果Master异常，则会做主从切换，将slave作为Master。其配置也是稍微的复杂，并且各方面表现一般。
现在redis3.x已经支持集群的容错功能，并且非常简单。
参考文档
Redis 官方集群指南:http://redis.io/topics/cluster-tutorial Redis 官方集群规范:http://redis.io/topics/cluster-spec Redis 集群指南(中文翻译，紧供参考):http://redisdoc.com/topic/cluster-tutorial.html Redis 集群规范(中文翻译，紧供参考): http://redisdoc.com/topic/cluster-spec.html
1 集群规划
要让 Redis3.0 集群正常工作至少需要 3 个 Master 节点，要想实现高可用，每个 Master 节点要配备至少 1 个 Slave 节点。根据以上特点和要求，进行如下的集群实施规划:
使用 6 台服务器(物理机或虚拟机，我本机电脑只有8G内存，我采用文件系统隔离模拟6台服务器)部署 3 个 Master + 3 个 Slave;
| 主机名 | IP | 服务端口（默认6379） | 集群端口（服务端口+10000） | 主/从 |
|---|---|---|---|---|
| redis-01 | 10.0.31.144 | 7111 | 17111 | Master |
| redis-02 | 10.0.31.144 | 7112 | 17112 | Master |
| Redis-03 | 10.0.31.144 | 7113 | 17113 | Master |
| redis-04 | 10.0.31.144 | 7114 | 17114 | Slave |
| redis-05 | 10.0.31.144 | 7115 | 17115 | Slave |
| redis-06 | 10.0.31.144 | 7116 | 17116 | Slave |
2 环境准备
IP：10.0.31.144
环境：CentOS 6.6
redis集群需要适应ruby命令
[[email protected] ~]yum install ruby [[email protected] ~]yum install rubygems [[email protected] ~]gem install redis //安装redis和ruby的接口 Centos默认支持ruby到2.0.0，可gem 安装redis需要最低是2.2.2 解决办法是 先安装rvm，再把ruby版本提升至2.3.3 参考文档：http://blog.****.net/fengye_yulu/article/details/77628094 解决国内gem不用能的问题 # gem sources -r https://rubygems.org/ # gem sources -a https://ruby.taobao.org/ # gem sources -l *** CURRENT SOURCES *** https://ruby.taobao.org
Redis版本：redis-3.X
用户：root
安装目录：/usr/local/redis-cluster：
[[email protected] ~]# mkdir /usr/local/redis-cluster [[email protected] ~]# cd /usr/local/redis-cluster/ [[email protected] redis-cluster]# mkdir 7111 [[email protected] redis-cluster]# mkdir 7112 [[email protected] redis-cluster]# mkdir 7113 [[email protected] redis-cluster]# mkdir 7114 [[email protected] redis-cluster]# mkdir 7115 [[email protected] redis-cluster]# mkdir 7116 [[email protected] redis-cluster]# pwd /usr/local/redis-cluster [[email protected] redis-cluster]# ll 总用量 24 drwxr-xr-x 2 root root 4096 10月 21 16:06 7111 drwxr-xr-x 2 root root 4096 10月 21 16:06 7112 drwxr-xr-x 2 root root 4096 10月 21 16:06 7113 drwxr-xr-x 2 root root 4096 10月 21 16:06 7114 drwxr-xr-x 2 root root 4096 10月 21 16:06 7115 drwxr-xr-x 2 root root 4096 10月 21 16:06 7116 [[email protected] redis-cluster]#
3 集群配置
（1）本案例中的单机部署伪集群
本机上已安装过单机版redis，把之前的//usr/local/src/redis3.2/scr/redis.conf分别copy到/usr/local/redis-cluster/711X文件夹下，并分别重命名为 redis-711X.conf，进行配置修改。
[[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7111/redis-7111.conf [[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7112/redis-7112.conf [[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7113/redis-7113.conf [[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7114/redis-7114.conf [[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7115/redis-7115.conf [[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7116/redis-7116.conf
配置集群的redis-7111X.conf
[[email protected] ~]# vim /usr/local/redis-cluster/711X/redis-711X.conf
配置参数：
| 配置选项 | 选项值 | 说明 |
|---|---|---|
| daemonize | yes | 是否作为守护进程运行 |
| pidfile | /var/run/redis-711X.pid | 为后台运行的进程提供一个pid |
| port | 711X | 监听端口，默认6379，集群通讯端口默认为此地址+10000 |
| databases | 1 | 可用数据库，默认16，默认数据库存储在DB0中，无特殊需求，建议设置一个数据库 |
| cluster-enable | yes | 打开redis集群 |
| cluster-config-file | //usr/local/src/redis3.2/cluster/711X/nodes711X.conf | 集群配置文件(启动自动生成)，不用人为干涉 |
| cluster-migration-barrier | 1 | 数据迁移的副本临界数，这个参数表示的是，一个主节点在拥有多少个好的从节点的时候就要割让一个从节点出来给另一个没有任何从节点的主节点。 |
| cluster-required-full-coverage | Yes | 如果一些kes space没有被集群中任何节点覆盖，集群将停止接收写入 |
| appendonly | yes | 启用aof持久化方式 |
| dir | /usr/local/redis-cluster/711X | 节点数据持久化存放目录(建议配置) |
| cluster-node-timeout | 15000 | 节点互连超时时间（毫秒） |
| bind | 当前机器IP | 绑定当前机器IP |
（2）如果准备的是6台虚拟机或物理机
在每一台机器上都执行以下步骤：（通单机版安装）
1.编译和安装所需要的包：
[[email protected] ~] # yum install gcc tcl
2.上传或下载redis稳定版3.x 到软件源码目录 /usr/local/src/
[[email protected] src]# cd /usr/local/src/ [[email protected] src]# wget http://download.redis.io/releases/redis-3.2.11.tar.gz
3.解压(重命名为redis3.2)：
[[email protected] src]# tar -zxvf redis-3.2.11.tar.gz [[email protected] src]# mv redis-3.2.11 redis3.2
4.创建安装目录
[[email protected] utils]# mkdir /usr/local/redis
5.编译安装（使用PREFIX指定安装目录）
进入到/usr/local/src/redis-3.1/src目录
[[email protected] utils]# cd ../src/ [[email protected] src]# make PREFIX=/usr/local/redis install
6.配置集群
创建集群配置目录，并拷贝 redid.conf 配置文件到各节点配置目录:192.168.1.111
# mkdir -p /usr/local/redis-cluster/7111 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7111/redis-7111.conf
192.168.1.112
# mkdir -p /usr/local/redis-cluster/7112 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7112/redis-7112.conf
192.168.1.113
# mkdir -p /usr/local/redis-cluster/7113 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7113/redis-7113.conf
192.168.1.114
# mkdir -p /usr/local/redis-cluster/7114 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7114/redis-7114.conf
192.168.1.115
# mkdir -p /usr/local/redis-cluster/7115 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7115/redis-7115.conf
192.168.1.116
# mkdir -p /usr/local/redis-cluster/7116 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7116/redis-7116.conf
具体配置内容参看（1）中的配置案例。
4 集群创建
分别启动6个redis实例，然后检查是否启动成功
[[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7111/redis-7111.conf [[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7112/redis-7112.conf [[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7113/redis-7113.conf [[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7114/redis-7114.conf [[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7115/redis-7115.conf [[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7116/redis-7116.conf
验证:
[[email protected] ~]# ps -ef|grep redis root 1948 1 0 18:52 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7111 [cluster] root 1956 1 0 18:53 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7112 [cluster] root 1960 1 0 18:53 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7113 [cluster] root 1964 1 0 18:53 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7114 [cluster] root 1968 1 0 18:54 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7115 [cluster] root 1973 1 0 18:54 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7116 [cluster] root 1978 1720 0 18:54 pts/0 00:00:00 grep redis
设置集群关系：
使用/usr/local/src/redis3.2/src/redis-trib.rb命令
[[email protected] src]# ./redis-trib.rb create --replicas 1 10.0.31.144:7111 10.0.31.144:7112 10.0.31.144:7113 10.0.31.144:7114 10.0.31.144:7115 10.0.31.144:7116 >>> Creating cluster Connecting to node 10.0.31.144:7111: OK Connecting to node 10.0.31.144:7112: OK Connecting to node 10.0.31.144:7113: OK Connecting to node 10.0.31.144:7114: OK Connecting to node 10.0.31.144:7115: OK Connecting to node 10.0.31.144:7116: OK >>> Performing hash slots allocation on 6 nodes... Using 3 masters: 10.0.31.144:7111 10.0.31.144:7112 10.0.31.144:7113 Adding replica 10.0.31.144:7114 to 10.0.31.144:7111 Adding replica 10.0.31.144:7115 to 10.0.31.144:7112 Adding replica 10.0.31.144:7116 to 10.0.31.144:7113 M: 88da0083291b0a732ec9ca502b2cfccfc296dcbb 10.0.31.144:7111 slots:0-5460 (5461 slots) master M: 815a0c11695a42cdb46104444f8c29a9ac5ea897 10.0.31.144:7112 slots:5461-10922 (5462 slots) master M: 203bc8721443aa8432b9397cfe0daa07f5d603a0 10.0.31.144:7113 slots:10923-16383 (5461 slots) master S: c639cce2bbe1334d15e7dcba2635f14b7b0ff4af 10.0.31.144:7114 replicates 88da0083291b0a732ec9ca502b2cfccfc296dcbb S: 4f8dd744609a135777d07d18e8faf18c6833e96d 10.0.31.144:7115 replicates 815a0c11695a42cdb46104444f8c29a9ac5ea897 S: a350fb4762033ded64d6dbb778004889de673e37 10.0.31.144:7116 replicates 203bc8721443aa8432b9397cfe0daa07f5d603a0 Can I set the above configuration? (type 'yes' to accept): //输入yes
集群创建过程说明：
(1) 给定 redis-trib 程序的命令是 create ， 这表示我们希望创建一个新的集群;
(2) 这里的 --replicas 1 表示每个主节点下有一个从节点;
(3) 之后跟着的其它参数则是实例的地址列表，程序使用这些地址所指示的实例来创建新集群;总的来说，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。接着，redis-trib 会打印出一份预想中的配置给你看，如果你觉得没问题的话(注意核对主从关系是否是你想要的)，就可以输入 yes ， redis-trib 就会将这份配置应用到集群当中。
5 集群测试
使用redis-cli进入集群环境
5.1 登录集群
[[email protected] src]# /usr/local/redis/bin/redis-cli -c -h 10.0.31.144 -p 7111 10.0.31.144:7111>
-c ：集群模式
-h：指定ip地址
-p：指定端口号
5.2查看集群信息
cluster info ：查看集群信息
cluster nodes ：查看节点列表
5.3数据验证
[[email protected] src]# /usr/local/redis/bin/redis-cli -c -h 10.0.31.144 -p 7111 10.0.31.144:7111> set a 1 -> Redirected to slot [15495] located at 10.0.31.144:7113 //将a设置到了7113 OK 10.0.31.144:7113> quit [[email protected] src]# /usr/local/redis/bin/redis-cli -c -h 10.0.31.144 -p 7112 10.0.31.144:7112> get a -> Redirected to slot [15495] located at 10.0.31.144:7113 //从7113获取到了a "1" 10.0.31.144:7113>
在Redis3.x之前，提供了sentinel工具来监控各个Master的状态，如果Master异常，则会做主从切换，将slave作为Master。其配置也是稍微的复杂，并且各方面表现一般。
现在redis3.x已经支持集群的容错功能，并且非常简单。
参考文档
Redis 官方集群指南:http://redis.io/topics/cluster-tutorial Redis 官方集群规范:http://redis.io/topics/cluster-spec Redis 集群指南(中文翻译，紧供参考):http://redisdoc.com/topic/cluster-tutorial.html Redis 集群规范(中文翻译，紧供参考): http://redisdoc.com/topic/cluster-spec.html
1 集群规划
要让 Redis3.0 集群正常工作至少需要 3 个 Master 节点，要想实现高可用，每个 Master 节点要配备至少 1 个 Slave 节点。根据以上特点和要求，进行如下的集群实施规划:
使用 6 台服务器(物理机或虚拟机，我本机电脑只有8G内存，我采用文件系统隔离模拟6台服务器)部署 3 个 Master + 3 个 Slave;
| 主机名 | IP | 服务端口（默认6379） | 集群端口（服务端口+10000） | 主/从 |
|---|---|---|---|---|
| redis-01 | 10.0.31.144 | 7111 | 17111 | Master |
| redis-02 | 10.0.31.144 | 7112 | 17112 | Master |
| Redis-03 | 10.0.31.144 | 7113 | 17113 | Master |
| redis-04 | 10.0.31.144 | 7114 | 17114 | Slave |
| redis-05 | 10.0.31.144 | 7115 | 17115 | Slave |
| redis-06 | 10.0.31.144 | 7116 | 17116 | Slave |
2 环境准备
IP：10.0.31.144
环境：CentOS 6.6
redis集群需要适应ruby命令
[[email protected] ~]yum install ruby [[email protected] ~]yum install rubygems [[email protected] ~]gem install redis //安装redis和ruby的接口 Centos默认支持ruby到2.0.0，可gem 安装redis需要最低是2.2.2 解决办法是 先安装rvm，再把ruby版本提升至2.3.3 参考文档：http://blog.****.net/fengye_yulu/article/details/77628094 解决国内gem不用能的问题 # gem sources -r https://rubygems.org/ # gem sources -a https://ruby.taobao.org/ # gem sources -l *** CURRENT SOURCES *** https://ruby.taobao.org
Redis版本：redis-3.X
用户：root
安装目录：/usr/local/redis-cluster：
[[email protected] ~]# mkdir /usr/local/redis-cluster [[email protected] ~]# cd /usr/local/redis-cluster/ [[email protected] redis-cluster]# mkdir 7111 [[email protected] redis-cluster]# mkdir 7112 [[email protected] redis-cluster]# mkdir 7113 [[email protected] redis-cluster]# mkdir 7114 [[email protected] redis-cluster]# mkdir 7115 [[email protected] redis-cluster]# mkdir 7116 [[email protected] redis-cluster]# pwd /usr/local/redis-cluster [[email protected] redis-cluster]# ll 总用量 24 drwxr-xr-x 2 root root 4096 10月 21 16:06 7111 drwxr-xr-x 2 root root 4096 10月 21 16:06 7112 drwxr-xr-x 2 root root 4096 10月 21 16:06 7113 drwxr-xr-x 2 root root 4096 10月 21 16:06 7114 drwxr-xr-x 2 root root 4096 10月 21 16:06 7115 drwxr-xr-x 2 root root 4096 10月 21 16:06 7116 [[email protected] redis-cluster]#
3 集群配置
（1）本案例中的单机部署伪集群
本机上已安装过单机版redis，把之前的//usr/local/src/redis3.2/scr/redis.conf分别copy到/usr/local/redis-cluster/711X文件夹下，并分别重命名为 redis-711X.conf，进行配置修改。
[[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7111/redis-7111.conf [[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7112/redis-7112.conf [[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7113/redis-7113.conf [[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7114/redis-7114.conf [[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7115/redis-7115.conf [[email protected] ~]# cp //usr/local/src/redis3.2/scr/redis.conf /usr/local/redis-cluster/7116/redis-7116.conf
配置集群的redis-7111X.conf
[[email protected] ~]# vim /usr/local/redis-cluster/711X/redis-711X.conf
配置参数：
| 配置选项 | 选项值 | 说明 |
|---|---|---|
| daemonize | yes | 是否作为守护进程运行 |
| pidfile | /var/run/redis-711X.pid | 为后台运行的进程提供一个pid |
| port | 711X | 监听端口，默认6379，集群通讯端口默认为此地址+10000 |
| databases | 1 | 可用数据库，默认16，默认数据库存储在DB0中，无特殊需求，建议设置一个数据库 |
| cluster-enable | yes | 打开redis集群 |
| cluster-config-file | //usr/local/src/redis3.2/cluster/711X/nodes711X.conf | 集群配置文件(启动自动生成)，不用人为干涉 |
| cluster-migration-barrier | 1 | 数据迁移的副本临界数，这个参数表示的是，一个主节点在拥有多少个好的从节点的时候就要割让一个从节点出来给另一个没有任何从节点的主节点。 |
| cluster-required-full-coverage | Yes | 如果一些kes space没有被集群中任何节点覆盖，集群将停止接收写入 |
| appendonly | yes | 启用aof持久化方式 |
| dir | /usr/local/redis-cluster/711X | 节点数据持久化存放目录(建议配置) |
| cluster-node-timeout | 15000 | 节点互连超时时间（毫秒） |
| bind | 当前机器IP | 绑定当前机器IP |
（2）如果准备的是6台虚拟机或物理机
在每一台机器上都执行以下步骤：（通单机版安装）
1.编译和安装所需要的包：
[[email protected] ~] # yum install gcc tcl
2.上传或下载redis稳定版3.x 到软件源码目录 /usr/local/src/
[[email protected] src]# cd /usr/local/src/ [[email protected] src]# wget http://download.redis.io/releases/redis-3.2.11.tar.gz
3.解压(重命名为redis3.2)：
[[email protected] src]# tar -zxvf redis-3.2.11.tar.gz [[email protected] src]# mv redis-3.2.11 redis3.2
4.创建安装目录
[[email protected] utils]# mkdir /usr/local/redis
5.编译安装（使用PREFIX指定安装目录）
进入到/usr/local/src/redis-3.1/src目录
[[email protected] utils]# cd ../src/ [[email protected] src]# make PREFIX=/usr/local/redis install
6.配置集群
创建集群配置目录，并拷贝 redid.conf 配置文件到各节点配置目录:192.168.1.111
# mkdir -p /usr/local/redis-cluster/7111 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7111/redis-7111.conf
192.168.1.112
# mkdir -p /usr/local/redis-cluster/7112 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7112/redis-7112.conf
192.168.1.113
# mkdir -p /usr/local/redis-cluster/7113 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7113/redis-7113.conf
192.168.1.114
# mkdir -p /usr/local/redis-cluster/7114 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7114/redis-7114.conf
192.168.1.115
# mkdir -p /usr/local/redis-cluster/7115 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7115/redis-7115.conf
192.168.1.116
# mkdir -p /usr/local/redis-cluster/7116 # cp /usr/local/src/redis3.2/redis.conf /usr/local/redis-cluster/7116/redis-7116.conf
具体配置内容参看（1）中的配置案例。
4 集群创建
分别启动6个redis实例，然后检查是否启动成功
[[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7111/redis-7111.conf [[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7112/redis-7112.conf [[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7113/redis-7113.conf [[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7114/redis-7114.conf [[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7115/redis-7115.conf [[email protected] ~]# /usr/local/redis/bin/redis-server /usr/local/redis-cluster/7116/redis-7116.conf
验证:
[[email protected] ~]# ps -ef|grep redis root 1948 1 0 18:52 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7111 [cluster] root 1956 1 0 18:53 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7112 [cluster] root 1960 1 0 18:53 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7113 [cluster] root 1964 1 0 18:53 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7114 [cluster] root 1968 1 0 18:54 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7115 [cluster] root 1973 1 0 18:54 ? 00:00:00 /usr/local/redis/bin/redis-server 10.0.31.144:7116 [cluster] root 1978 1720 0 18:54 pts/0 00:00:00 grep redis
设置集群关系：
使用/usr/local/src/redis3.2/src/redis-trib.rb命令
[[email protected] src]# ./redis-trib.rb create --replicas 1 10.0.31.144:7111 10.0.31.144:7112 10.0.31.144:7113 10.0.31.144:7114 10.0.31.144:7115 10.0.31.144:7116 >>> Creating cluster Connecting to node 10.0.31.144:7111: OK Connecting to node 10.0.31.144:7112: OK Connecting to node 10.0.31.144:7113: OK Connecting to node 10.0.31.144:7114: OK Connecting to node 10.0.31.144:7115: OK Connecting to node 10.0.31.144:7116: OK >>> Performing hash slots allocation on 6 nodes... Using 3 masters: 10.0.31.144:7111 10.0.31.144:7112 10.0.31.144:7113 Adding replica 10.0.31.144:7114 to 10.0.31.144:7111 Adding replica 10.0.31.144:7115 to 10.0.31.144:7112 Adding replica 10.0.31.144:7116 to 10.0.31.144:7113 M: 88da0083291b0a732ec9ca502b2cfccfc296dcbb 10.0.31.144:7111 slots:0-5460 (5461 slots) master M: 815a0c11695a42cdb46104444f8c29a9ac5ea897 10.0.31.144:7112 slots:5461-10922 (5462 slots) master M: 203bc8721443aa8432b9397cfe0daa07f5d603a0 10.0.31.144:7113 slots:10923-16383 (5461 slots) master S: c639cce2bbe1334d15e7dcba2635f14b7b0ff4af 10.0.31.144:7114 replicates 88da0083291b0a732ec9ca502b2cfccfc296dcbb S: 4f8dd744609a135777d07d18e8faf18c6833e96d 10.0.31.144:7115 replicates 815a0c11695a42cdb46104444f8c29a9ac5ea897 S: a350fb4762033ded64d6dbb778004889de673e37 10.0.31.144:7116 replicates 203bc8721443aa8432b9397cfe0daa07f5d603a0 Can I set the above configuration? (type 'yes' to accept): //输入yes
集群创建过程说明：
(1) 给定 redis-trib 程序的命令是 create ， 这表示我们希望创建一个新的集群;
(2) 这里的 --replicas 1 表示每个主节点下有一个从节点;
(3) 之后跟着的其它参数则是实例的地址列表，程序使用这些地址所指示的实例来创建新集群;总的来说，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。接着，redis-trib 会打印出一份预想中的配置给你看，如果你觉得没问题的话(注意核对主从关系是否是你想要的)，就可以输入 yes ， redis-trib 就会将这份配置应用到集群当中。
5 集群测试
使用redis-cli进入集群环境
5.1 登录集群
[[email protected] src]# /usr/local/redis/bin/redis-cli -c -h 10.0.31.144 -p 7111 10.0.31.144:7111>
-c ：集群模式
-h：指定ip地址
-p：指定端口号
5.2查看集群信息
cluster info ：查看集群信息
cluster nodes ：查看节点列表
5.3数据验证
[[email protected] src]# /usr/local/redis/bin/redis-cli -c -h 10.0.31.144 -p 7111 10.0.31.144:7111> set a 1 -> Redirected to slot [15495] located at 10.0.31.144:7113 //将a设置到了7113 OK 10.0.31.144:7113> quit [[email protected] src]# /usr/local/redis/bin/redis-cli -c -h 10.0.31.144 -p 7112 10.0.31.144:7112> get a -> Redirected to slot [15495] located at 10.0.31.144:7113 //从7113获取到了a "1" 10.0.31.144:7113>