ubuntu安装和测试redis-cluster

想了好久还是自己总结下这次安装redis-cluster遇到的各种问题和安装步骤，以便下次进行安装不会出错

其中是在虚拟机上进行的，UBUNTU是16.04service版，redis是3.2.9版本。

 

 

 

一、redis

　　1、关于redis的介绍自己参看别的博文吧，网上很多关于说了redis的优点，记得又一次面试了一家公司问及redis和memcached的区别，当时竟然无从开口，现在感觉好惭愧；

　　2、我此次搭建redis-cluster主要参考了博文 http://blog.csdn.net/zh520qx/article/details/54577753，由于博主要求就没有转载了，但有的地方 可能并不适用于任何系统，所以自己才写了这个随笔；

二、redis-cluster搭建的准备步骤

1、安装redis

我是安装在 /opt  路径下 所以先进入/opt下进行以下操作

下载 $ wget http://download.redis.io/releases/redis-3.2.9.tar.gz

解压 $ tar xzf redis-3.2.9.tar.gz

进入目录 $ cd /opt/redis-3.2.9

编译 $ make

编译成功之后在 /opt/redis-3.2.9/src 下有redis-server 可以启动试下是否安装redis成功  ./redis-server  

网上其实还有别的安装redis方法这里就不多说了

2、安装集群的一些依赖

2.1）、安装zlib

$ sudo apt-get install zlib1g-dev 或者 $ sudo apt-get install zlib1g
2.2)、安装ruby环境

$ sudo apt-get install ruby 其实这篇文章不错  介绍了ubuntu多种安装ruby环境的方法  http://blog.csdn.net/chszs/article/details/42462517

2.3)、安装ruby 的redis库

gem install redis 

如果没有gem，就按照提示安装再执行上面命令就行

 

3、创建redis实例

3.1）创建实例目录

$ mkdir /usr/local/redis-cluster/redis{7001,7002,7003,7004,7005,7006,7007,7008}

3.2) 复制redis.conf redis-server redis-cli 到实例目录下

for dir in /usr/local/redis-cluster/redis700*; do cp -v /opt/redis-3.2.9/redis.conf $dir ; done

for dir in /usr/local/redis-cluster/redis700*; do cp -v /opt/redis-3.2.9/src/redis-server $dir ; done

for dir in /usr/local/redis-cluster/redis700*; do cp -v /opt/redis-3.2.9/src/redis-cli $dir ; done

 这个复制详细说明庆参考博文 http://blog.csdn.net/maowenbin/article/details/7758367

也可以单个复制

cp /usr/local/redis-cluster/redis7001 /opt/redis-3.2.9/src/redis-server

cp /usr/local/redis-cluster/redis7002 /opt/redis-3.2.9/src/redis-server

cp /usr/local/redis-cluster/redis7003 /opt/redis-3.2.9/src/redis-server

cp /usr/local/redis-cluster/redis7004 /opt/redis-3.2.9/src/redis-servercp /usr/local/redis-cluster/redis7005 /opt/redis-3.2.9/src/redis-server

cp /usr/local/redis-cluster/redis7006 /opt/redis-3.2.9/src/redis-servercp /usr/local/redis-cluster/redis7007 /opt/redis-3.2.9/src/redis-server

cp /usr/local/redis-cluster/redis7008 /opt/redis-3.2.9/src/redis-servercp /usr/local/redis-cluster/redis7001 /opt/redis-3.2.9/src/redis-cli

cp /usr/local/redis-cluster/redis7002 /opt/redis-3.2.9/src/redis-cli
cp /usr/local/redis-cluster/redis7003 /opt/redis-3.2.9/src/redis-cli
cp /usr/local/redis-cluster/redis7004 /opt/redis-3.2.9/src/redis-cli
cp /usr/local/redis-cluster/redis7005 /opt/redis-3.2.9/src/redis-cli

cp /usr/local/redis-cluster/redis7006 /opt/redis-3.2.9/src/redis-cli

cp /usr/local/redis-cluster/redis7007 /opt/redis-3.2.9/src/redis-cli

cp /usr/local/redis-cluster/redis7008 /opt/redis-3.2.9/src/redis-cli

3.3)修改配置参数

for dir in /usr/local/redis-cluster/redis700*; do
myport=`basename $dir|sed 's/[a-zA-Z]*//g'`
sed -r -i "
s@^\s*port.*@port $myport@;
s@^\s*daemonize.*@daemonize yes@;
s@^\s*pidfile.*@pidfile /var/run/redis_$myport.pid@;
s@^\s*logfile.*@logfile /var/log/redis_$myport.log@;
s@^\s*#?\s*cluster-enabled.*@cluster-enabled yes@;
s@^\s*#?\s*cluster-config-file.*@cluster-config-file $dir/nodes-$myport.conf@;
s@^\s*#?\s*cluster-node-timeout.*@cluster-node-timeout 15000@;
s@^\s*dir.*@dir $dir@;
" $dir/redis.conf
done

执行上面命令之后发现配置文件redis.conf里的一项 bing 127.0.0.1这个在创建集群后会导致失败，因此就手动改成 bind 192.168.194

3.4)启动所有实例

for dir in /usr/local/redis-cluster/redis700*; do /opt/redis-3.2.9/src/redis-server $dir/redis.conf ; done

查看实例是否启动成功

$ ps -ef|grep redis

3.5）通过redis-trib.rb创建集群

由于我的redis-trib.rb在/opt/redis-3.2.9/src/，你也可以复制到别的目录下方便启动

./opt/redis-3.2.9/src/redis-trib.rb create --replicas 1 192.168.194.130:7001 192.168.194.130:7002 192.168.194.130:7003 192.168.194.130:7004 192.168.194.130:7005 192.168.194.130:7006

 

3.6）启动redis集群服务

我是分别进入 /usr/local/redis-cluster/redis700* 每个目录下，分别执行 ./redis-server redis.conf

现在写了个脚本，每次执行脚本就行了

每次执行 $ ./redis.sh就可以了，内容如下

#!/bin/bash
cd /usr/local/redis-cluster/redis7001
./redis-server redis.conf
cd /usr/local/redis-cluster/redis7002
./redis-server redis.conf
cd /usr/local/redis-cluster/redis7003
./redis-server redis.conf
cd /usr/local/redis-cluster/redis7004
./redis-server redis.conf
cd /usr/local/redis-cluster/redis7005
./redis-server redis.conf
cd /usr/local/redis-cluster/redis7006
./redis-server redis.conf
cd /usr/local/redis-cluster/redis7007
./redis-server redis.conf
cd /usr/local/redis-cluster/redis7008
./redis-server redis.conf

 

 

3.6)连接redis集群

  命令连接：./redis-cli -h 192.168.194.130 -p 7001 -c

 

java 连接

public class TestRedisCluster {

    /**
     * @param args
     */
    public static void main(String[] args) {

         Set<HostAndPort> nodes = new HashSet<HostAndPort>();
         nodes.add(new HostAndPort("192.168.194.130", 7001));  
         nodes.add(new HostAndPort("192.168.194.130", 7002));
         nodes.add(new HostAndPort("192.168.194.130", 7003));
         JedisCluster cluster = new JedisCluster(nodes );
         cluster.set("key1", "100wwwww0");
         System.out.println("key1="+cluster.get("key1"));
    }

}至此redis集群搭建结束，至于动态添加节点，删除节点之类的可以参考别的博客，后续会完善笔记..............................................................

 

 最后要关闭redis 的命令 ./redis-cli -h 192.168.194.130 -p 7003 shutdown