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  6379
dir   /var/redis/6379   //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      5504     1  0 12:41 ?        00:00:00 redis-server 127.0.0.1:6379   
root      5508  1361  0 12:41 pts/0    00:00:00 grep redis

4>使用客户端连接测试

[root@redis-sentinel redis-stable]# redis-cli -p 6379
127.0.0.1:6379> set ww 1
OK
127.0.0.1:6379> get ww
"1"

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  6380
dir   /var/redis/6380   //设置持久化文件存放位置
slaveof 127.0.0.1 6379  //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  6381
dir   /var/redis/6381   //设置持久化文件存放位置
slaveof 127.0.0.1 6379  //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      5504     1  0 12:41 ?        00:00:02 redis-server 127.0.0.1:6379   
root      5555     1  0 14:47 ?        00:00:00 redis-server 127.0.0.1:6380  
root      5561  1361  0 14:48 pts/0    00:00:00 grep redis
[root@redis-sentinel redis-stable]# redis-cli -p 6380
127.0.0.1:6380> get ww
"1"     //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      5504     1  0 12:41 ?        00:00:02 redis-server 127.0.0.1:6379   
root      5555     1  0 14:47 ?        00:00:00 redis-server 127.0.0.1:6380  
root      5557     1  0 14:48 ?        00:00:00 redis-server 127.0.0.1:6381 
root      5561  1361  0 14:48 pts/0    00:00:00 grep redis
[root@redis-sentinel redis-stable]# redis-cli -p 6381
127.0.0.1:6380> get ww
"1"     //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 26379
daemonize yes
sentinel monitor mymaster 127.0.0.1 6379 2
sentinel myid 1c805b9134364d69986f9042c22e95debf1932c9

//sentinel_26380.conf
port 26380
daemonize yes
sentinel monitor mymaster 127.0.0.1 6379 2
sentinel myid ac1ef015411583d4b9f3d81cee830060b2f29862

//sentinel_26381.conf
port 26381
daemonize yes
sentinel monitor mymaster 127.0.0.1 6379 2
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      5504     1  0 12:41 ?        00:00:03 redis-server 127.0.0.1:6379   
root      5555     1  0 14:47 ?        00:00:00 redis-server 127.0.0.1:6380  
root      5606     1  0 15:23 ?        00:00:00 redis-server 127.0.0.1:6381       
root      5770  1361  0 15:54 pts/0    00:00:00 redis-sentinel *:26379 [sentinel] 
root      5773  5429  0 15:54 pts/1    00:00:00 redis-sentinel *:26380 [sentinel] 
root      5776  5710  0 15:55 pts/2    00:00:00 redis-sentinel *:26381 [sentinel] 
root      5781  5743  0 15:57 pts/3    00:00:00 grep redis

[root@redis-sentinel redis-stable]# redis-cli -p 26379
127.0.0.1:26379> sentinel masters
1)  1) "name"
    2) "mymaster"
    3) "ip"
    4) "127.0.0.1"
    5) "port"
    6) "6379"
    7) "runid"
    8) "83491622b984fa6bbb4cd7761c77b23491569b1b"
    9) "flags"
   10) "master"
   ...

127.0.0.1:26379> SENTINEL slaves mymaster
1)  1) "name"
    2) "127.0.0.1:6380"
    3) "ip"
    4) "127.0.0.1"
    5) "port"
    6) "6380"
    7) "runid"
    8) "e532cc9e510bf93a6c3dd5d978be8364c91c616f"
    9) "flags"
   10) "slave"
   ...
2)  1) "name"
    2) "127.0.0.1:6381"
    3) "ip"
    4) "127.0.0.1"
    5) "port"
    6) "6381"
    7) "runid"
    8) "f7cee9c9f6e5a346d38f2a09dfc9eb4846118ae5"
    9) "flags"
   10) "slave"
   ...

127.0.0.1:26379> SENTINEL get-master-addr-by-name mymaster
1) "127.0.0.1"
2) "6379"

[root@redis-sentinel redis-stable]# kill -9 5504 
[root@redis-sentinel redis-stable]# ps -ef|grep redis
root      5555     1  0 14:47 ?        00:00:00 redis-server 127.0.0.1:6380  
root      5606     1  0 15:23 ?        00:00:00 redis-server 127.0.0.1:6381       
root      5770  1361  0 15:54 pts/0    00:00:00 redis-sentinel *:26379 [sentinel] 
root      5773  5429  0 15:54 pts/1    00:00:00 redis-sentinel *:26380 [sentinel] 
root      5776  5710  0 15:55 pts/2    00:00:00 redis-sentinel *:26381 [sentinel] 
root      5789  5743  0 15:59 pts/3    00:00:00 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 26379
127.0.0.1:26379> SENTINEL get-master-addr-by-name mymaster
1) "127.0.0.1"
2) "6380"

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;
    ...
}