Jedis访问Redis集群

亦凉 2022-03-09 19:43 254阅读 0赞

# Jedis访问Redis集群 #

### 环境 ###

*  centos6.5中配置了6个redis服务，ip映射到centos01上，端口分别是7001~7006
    
     *  centos01 7001
     *  centos01 7002
     *  centos01 7003
     *  centos01 7004
     *  centos01 7005
     *  centos01 7006
 *  idea中新建maven工程，pom依赖文件引入jedis
    
     
    
        <dependencies>
            <dependency>
                <groupId>redis.clients</groupId>
                <artifactId>jedis</artifactId>
                <version>2.9.0</version>
            </dependency>
        </dependencies>

### 开启集群 ###

*  开启集群命令，开启相应的配置文件
    
     *  redis-server 7001/redis.conf
     *  redis-server 7002/redis.conf
     *  redis-server 7003/redis.conf
     *  redis-server 7004/redis.conf
     *  redis-server 7005/redis.conf
     *  redis-server 7006/redis.conf
 *  检查是否开启集群
    
     *  ![Xh4t8x0.png][]

### 连接测试 ###

public static void main(String[] args) throws Exception {
        HostAndPort hp1 = new HostAndPort("centos01", 7001);
        HostAndPort hp2 = new HostAndPort("centos01", 7002);
        HostAndPort hp3 = new HostAndPort("centos01", 7003);
        HostAndPort hp4 = new HostAndPort("centos01", 7004);
        HostAndPort hp5 = new HostAndPort("centos01", 7005);
        HostAndPort hp6 = new HostAndPort("centos01", 7006);
    
        Set hs = new HashSet();
        hs.add(hp1);
        hs.add(hp2);
        hs.add(hp3);
        hs.add(hp4);
        hs.add(hp5);
        hs.add(hp6);
    
        JedisCluster jc = new JedisCluster(hs);
        jc.set("a", "test");
        jc.close();
    }

*  centos查看key为a的值
    
     *  ![eKaiomF.png][]

### 以上操作都没问题，那么测试成功 ###

# 常见的错误 #

*  java.net.ConnectException: Connection refused: connect
 *  cluster is down
    
     *  连接失败--通常是redis集群没有完全起起来
     *  ![UZ6Ujcb.png][]
     *  解决方案-重新启动shutdown的redis服务

[Xh4t8x0.png]: https://i.imgur.com/Xh4t8x0.png
[eKaiomF.png]: https://i.imgur.com/eKaiomF.png
[UZ6Ujcb.png]: https://i.imgur.com/UZ6Ujcb.png