redis sentinel搭建以及在jedis中使用

一、redis主从搭建

1、搭建redis master

1>redis安装

mkdir -p /usr/local/webserver/redis  //安装目录
cd /usr/local/webserver/redis
wget http://download.redis.io/redis-stable.tar.gz //最新稳定版
tar xzf redis-stable.tar.gz
cd redis-stable
make     //报错的话 install gcc
make install //redis可执行文件redis-cli,redis-server等会被复制到/usr/local/bin,命令行直接输入即可执行

2>主配置文件redis_master.conf做如下修改:

daemonize   yes   //使redis能以守护进程模式运行
pidfile   /var/run/redis_6379.pid   //设置redis PID 文件位置
port
dir   /var/redis/   //设置持久化文件存放位置

3>启动master

[root@redis-sentinel redis-stable]# redis-server redis_master.conf
[root@redis-sentinel redis-stable]# ps -ef|grep redis
root              : ?        :: redis-server 127.0.0.1:
root           : pts/    :: grep redis

4>使用客户端连接测试

[root@redis-sentinel redis-stable]# redis-cli -p
127.0.0.1:> set ww
OK
127.0.0.1:> get ww
""

2、搭建2个redis slave

1>从配置文件redis_slave_6380.conf,redis_slave_6381.conf做如下修改:

daemonize   yes   //使redis能以守护进程模式运行
pidfile   /var/run/redis_6380.pid   //设置redis PID 文件位置
port
dir   /var/redis/   //设置持久化文件存放位置
slaveof 127.0.0.1   //设置属于哪个master

daemonize   yes   //使redis能以守护进程模式运行
pidfile   /var/run/redis_6381.pid   //设置redis PID 文件位置
port
dir   /var/redis/   //设置持久化文件存放位置
slaveof 127.0.0.1   //设置属于哪个master

2>启动slave并测试数据是否同步

[root@redis-sentinel redis-stable]# redis-server redis_slave_6380.conf
[root@redis-sentinel redis-stable]# ps -ef|grep redis
root              : ?        :: redis-server 127.0.0.1:
root              : ?        :: redis-server 127.0.0.1:
root           : pts/    :: grep redis
[root@redis-sentinel redis-stable]# redis-cli -p
127.0.0.1:> get ww
""     //数据已经同步过来

[root@redis-sentinel redis-stable]# redis-server redis_slave_6381.conf
[root@redis-sentinel redis-stable]# ps -ef|grep redis
root              : ?        :: redis-server 127.0.0.1:
root              : ?        :: redis-server 127.0.0.1:
root              : ?        :: redis-server 127.0.0.1:
root           : pts/    :: grep redis
[root@redis-sentinel redis-stable]# redis-cli -p
127.0.0.1:> get ww
""     //数据已经同步过来

二、Redis容灾部署(哨兵Sentinel)

1、三个哨兵文件配置

////sentinel_26379.conf
port
daemonize yes
sentinel monitor mymaster 127.0.0.1
sentinel myid 1c805b9134364d69986f9042c22e95debf1932c9

//sentinel_26380.conf
port
daemonize yes
sentinel monitor mymaster 127.0.0.1 6379
sentinel myid ac1ef015411583d4b9f3d81cee830060b2f29862

//sentinel_26381.conf
port
daemonize yes
sentinel monitor mymaster 127.0.0.1
sentinel myid 0aca3a57038e2907c8a07be2b3c0d15171e44da5

2、启动sentinel,并查看sentinel所监控的master和slave

[root@redis-sentinel redis-stable]# redis-sentinel  sentinel_26379.conf
[root@redis-sentinel redis-stable]# redis-sentinel  sentinel_26380.conf
[root@redis-sentinel redis-stable]# redis-sentinel  sentinel_26381.conf

[root@redis-sentinel redis-stable]# ps -ef|grep redis
root              : ?        :: redis-server 127.0.0.1:
root              : ?        :: redis-server 127.0.0.1:
root              : ?        :: redis-server 127.0.0.1:
root           : pts/    :: redis-sentinel *: [sentinel]
root           : pts/    :: redis-sentinel *: [sentinel]
root           : pts/    :: redis-sentinel *: [sentinel]
root           : pts/    :: grep redis

[root@redis-sentinel redis-stable]# redis-cli -p
127.0.0.1:> sentinel masters
)  ) "name"
    ) "mymaster"
    ) "ip"
    ) "127.0.0.1"
    ) "port"
    ) ""
    ) "runid"
    ) "83491622b984fa6bbb4cd7761c77b23491569b1b"
    ) "flags"
   ) "master"
   ...

127.0.0.1:> SENTINEL slaves mymaster
)  ) "name"
    ) "127.0.0.1:6380"
    ) "ip"
    ) "127.0.0.1"
    ) "port"
    ) ""
    ) "runid"
    ) "e532cc9e510bf93a6c3dd5d978be8364c91c616f"
    ) "flags"
   ) "slave"
   ...
)  ) "name"
    ) "127.0.0.1:6381"
    ) "ip"
    ) "127.0.0.1"
    ) "port"
    ) ""
    ) "runid"
    ) "f7cee9c9f6e5a346d38f2a09dfc9eb4846118ae5"
    ) "flags"
   ) "slave"
   ...

127.0.0.1:> SENTINEL get-master-addr-by-name mymaster
) "127.0.0.1"
) ""

[root@redis-sentinel redis-stable]# kill - 5504
[root@redis-sentinel redis-stable]# ps -ef|grep redis
root              : ?        :: redis-server 127.0.0.1:
root              : ?        :: redis-server 127.0.0.1:
root           : pts/    :: redis-sentinel *: [sentinel]
root           : pts/    :: redis-sentinel *: [sentinel]
root           : pts/    :: redis-sentinel *: [sentinel]
root           : pts/    :: grep redis

//主库出现故障时自动将从库转换为主库
[root@redis-sentinel redis-stable]# redis-cli -p
127.0.0.1:> SENTINEL get-master-addr-by-name mymaster
) "127.0.0.1"
) ""

三、jedis中使用哨兵,具体代码参考haixuanweb

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans">
    <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
         <property name="maxTotal" value="1000"/>
         <property name="maxIdle" value="10"/>
         <property name="minIdle" value="1"/>
         <property name="maxWaitMillis" value="30000"/>
         <property name="testOnBorrow" value="true"/>
         <property name="testOnReturn" value="true"/>
         <property name="testWhileIdle" value="true"/>
    </bean>

    <bean id="cacheService" class="sentinel.CacheServiceImpl" destroy-method="destroy">
        <property name="jedisSentinlePool">
            <bean class="redis.clients.jedis.JedisSentinelPool">
                 <constructor-arg index="0" value="mymaster" />
                 <constructor-arg index="1">
                     <set>
                         <value>192.168.13.128:26379</value>
                         <value>192.168.13.128:26380</value>
                         <value>192.168.13.128:26381</value>
                     </set>
                 </constructor-arg>
                 <constructor-arg index="2" ref="jedisPoolConfig" />
            </bean>
        </property>
    </bean>
</beans>

public class CacheServiceImpl implements CacheService {

    private static Logger logger = LoggerFactory.getLogger(CacheServiceImpl.class);

    private JedisSentinelPool jedisSentinlePool;

    public void set(String key, String value) {
        JedisSentinelPool pool = getJedisSentinelPool();
        Jedis jedis = pool.getResource();
        try {
            jedis.set(key, value);
        } catch (Exception e) {
            pool.returnBrokenResource(jedis);
        }finally {
            if(pool!=null){
                pool.returnResource(jedis);
            }
        }
    }
}

public interface CacheService {
    public void set(String key, String value);
}

@Controller
public class GoodsController extends BaseNoLoginController {
    @Autowired
    private CacheService cacheService;
    ...
}