Redis-3.2.4集群配置（RedisCluster+SpringBoot+Jedis）

此文由本人参考其他大神文档和资料,再结合当前环境做出的配置,有什么问题请联系我.

部署计划

部署6个redis节点，为3主3从。

端口	IP地址
6379	192.168.101.121
6379	192.168.101.199
6379	192.168.101.123
6379	192.168.101.127
6379	192.168.101.125
6379	192.168.101.126

目录结构

/data/redis

|-- bin

|   |-- redis-benchmark

|   |-- redis-check-aof

|   |-- redis-check-dump

|   |-- redis-cli

|   |-- redis-sentinel -> redis-server

|   `-- redis-server

|-- data

|   `-- 6379

|-- conf

|   `-- redis.conf

`-- log

编译安装

    (所有关于权限问题全部sudo,启动服务 sudo ./redis-server /data/redis/conf/redis.conf,真实环境下,若是以一个较低的权限启动redis,那么就可能产生无法创建日志以及rdb的问题)

创建目录

    mkdir redis

    cd redis

下载解压安装包

    wget http://download.redis.io/releases/redis-3.2.4.tar.gz

    tar zxvf redis-3.2.4.tar.gz

    cd redis-3.2.4

    make

    make install PREFIX=/data/redis-3.2.4    //默认安装到/usr/local/bin目录下。这里指定安装目录data/redis-3.2.4

    ln -s /data/redis-3.2.4 /data/redis    //软连接

    mkdir /data/redis/conf    //创建目录结构

    mkdir /data/redis/log

    mkdir /data/redis/data

    cp /home/redis/redis/redis-3.2.4/redis.conf /data/redis/conf/    //copy配置文件

    vim /data/redis/conf/redis.conf

redis的配置

    protected-mode no    //关闭保护模式

    port 6379    //端口

    daemonize yes    //守护进程开启,默认服务从后台启动

    loglevel verbose    //日志级别

    logfile /data/redis/log/redis-6379.log    //日志文件位置

    ==redis持久化rdb,AOF相关==

    dbfilename dump.rdb    //redis持久化文件名称

    dir /data/redis/data/6379    //redis持久化文件路径,默认为当前路径

    appendonly yes    //开启AOF

    appendfilename "appendonly.aof"    //AOF文件名称

    no-appendfsync-on-rewrite yes    //子进程在做rewrite时，主进程不调用fsync（由内核默认调度）

    ==REPLICATION==

    slave-serve-stale-data yes    //当slave与master断开连接，slave继续提供服务

    slave-read-only yes

    repl-ping-slave-period 1    //slave ping master的时间间隔，单位为秒

    repl-timeout 10    //复制超时，单位为秒，须大于repl-ping-slave-period的值

     ==REDIS CLUSTER==

    cluster-enabled yes    //开启集群配置

    cluster-config-file nodes-6379.conf    //节点配置文件，这个文件是服务启动时自己配置创建的

    cluster-node-timeout 5000    //集群中各节点相互通讯时，允许"失联"的最大毫秒数，如果超过没向其它节点汇报成功，就认为该节点已挂。

    cluster-slave-validity-factor 0    //将该项设置为0，不管slave节点和master节点间失联多久都会一直尝试failover

    repl-ping-slave-period 1

其他5台机器配置

    相同操作目录可直接远程拷贝

    scp -r [email protected]:/data/redis/data /data/redis/

    scp -r [email protected]:/data/redis/conf /data/redis/

    scp -r [email protected]:/data/redis/log /data/redis/

创建和启动redis cluster前的准备工作

    yum -y install ruby    //安装ruby    

    yum -y install rubygems    //安装rubygems    

    wget https://rubygems.org/downloads/redis-3.3.1.gem    //安装redis-3.3.1.gem

    gem install -l redis-3.3.1.gem

    cp redis-3.2.4/src/redis-trib.rb /data/redis/bin/    //redis-trib.rb是redis官方提供的redis cluster管理工具，使用ruby实现。

    ./redis-server /data/redis/conf/redis.conf    //启动6台服务

创建redis cluster

    redis-trib.rb create --replicas 1 192.168.101.121:6379 192.168.101.199:6379 192.168.101.123:6379 192.168.101.127:6379 192.168.101.125:6379 192.168.101.126:6379

    #redis-trib.rb的create子命令构建  

    #--replicas 则指定了为Redis Cluster中的每个Master节点配备几个Slave节点 

进入redis客户端

    redis-cli -c -p 6379    //-c进入集群模式

    info//查看信息

    cluster nodes//查看节点信息

    CLUSTER SLOTS//查看插槽信息

节点操作

    ./redis-trib.rb del-node 192.168.101.121:6379 '2ff326bc9084236ee6540d58d307893662ceff0b'//删除节点

    ./redis-trib.rb add-node --slave --master-id 0ecc54ed34cc7e2e1ebca168ab4564b803992094 192.168.101.121:6379 192.168.101.125:6379//添加从节点,添加前需要删除已存在的node.conf,rdb,aof文件

    ./redis-trib.rb reshard 192.168.101.121:6379//为新节点分配slot

    ./redis-trib.rb check 192.168.101.121:6379    //检查集群运行状态,只要输入任意集群中节点即可，会自动检查所有相关节点。

    ./redis-trib.rb fix 192.168.101.121:6379    //修复集群(若node移除了，但是并没有移除node上面的slot，从而导致了slot总数没有达到16384，其实也就是slots分布不正确。所以在删除节点的时候一定要注意删除的是否是Master主节点)。

关于集群创建错误

集群创建的时候如果没有创建成功,那么需要删除集群节点配置文件,不然无法重新创建集群

sudo rm /data/redis-3.2.4/data/6379/nodes-6379.conf

如果遇到Waiting for the cluster to join .......................................................

 >>> Sending CLUSTER MEET messages to join the cluster

解决方式

sudo ./redis-cli -c -p 6379    //进入客户端

CLUSTER MEET 将 ip 和 port 所指定的节点添加到集群当中。

Jedis的配置

config文件需要添加

github上有这一句，Jedis Cluster 会自动去发现集群中的节点，所以JedisClusterNodes只需要 add一个实例

	// JedisCluster
 
	@Bean
	public JedisCluster JedisClusterFactory() {
		LOG.info("JedisCluster创建！！");
		LOG.info("redis地址：" + host + ":" + port);
		Set<HostAndPort> jedisClusterNodes = new HashSet<HostAndPort>();
		JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
		jedisPoolConfig.setMaxIdle(maxIdle);
		jedisPoolConfig.setMaxWaitMillis(maxWaitMillis);
		jedisClusterNodes.add(new HostAndPort(host, port));
		JedisCluster jedisCluster = new JedisCluster(jedisClusterNodes, jedisPoolConfig);
		return jedisCluster;
	}

dao

package com.unioncast.db.rdbms.core.dao.commonDBDao.impl;
 
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.UUID;
 
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;
 
import com.unioncast.common.util.JsonUtil;
import com.unioncast.db.rdbms.core.dao.commonDBDao.RedisDao;
 
import redis.clients.jedis.JedisCluster;
 
@Repository("redisDao")
public class RedisDaoImpl implements RedisDao {
	@Autowired
	JedisCluster jedisCluster;
 
	@Override
	public <T> String addByKey(String key, T object) throws IOException {
		String object2JsonString = JsonUtil.object2JsonString(object);
		String set = jedisCluster.set(key, object2JsonString);
		return set;
	}
 
	@Override
	public <T> String add(T object) throws IOException {
		String uuid = UUID.randomUUID().toString().trim().replaceAll("-", "");
		String object2JsonString = JsonUtil.object2JsonString(object);
		jedisCluster.set(uuid, object2JsonString);
		return uuid;
	}
 
	@Override
	public Object getObject(String key) throws IOException {
		String string = jedisCluster.get(key);
		Object json2Object = JsonUtil.json2Object(string, Object.class);
		return json2Object;
	}
 
	@Override
	public <T> List<String> addList(List<T> list) throws IOException {
		List<String> sum = new ArrayList<>(70);
		String uuid = null;
		String str = null;
		for (int i = 0; i < list.size(); i++) {
			uuid = UUID.randomUUID().toString().trim().replaceAll("-", "");
			str = JsonUtil.object2JsonString(list.get(i));
			jedisCluster.set(uuid, str);
			sum.set(i, uuid);
		}
		return sum;
	}
 
	@Override
	public <T> String addListKey(List<String> strList, List<T> list) throws IOException {
		return null;
	}
 
	@Override
	public <T> Long addListKey(Map<String, T> map) throws IOException {
		Long sum = (long) 0;
		String str = null;
		Iterator<Entry<String, T>> iterator = map.entrySet().iterator();
		while (iterator.hasNext()) {
			Entry<String, T> entry = (Entry<String, T>) iterator.next();
			String key = entry.getKey();
			T object = entry.getValue();
			str = JsonUtil.object2JsonString(object);
			jedisCluster.set(key, str);
			sum = sum + 1;
		}
 
		return sum;
	}
 
	@Override
	public Long deleteByKey(String key) throws IOException {
		Long del = jedisCluster.del(key);
 
		return del;
	}
 
	@Override
	public Long batchDelete(List<String> strList) throws IOException {
		Long sum = (long) 0;
		Long del = (long) 0;
		for (int i = 0; i < strList.size(); i++) {
			del = jedisCluster.del(strList.get(i));
			sum = sum + del;
		}
 
		return sum;
	}
 
}

config

package com.unioncast.db.config;
 
import java.lang.reflect.Method;
import java.util.HashSet;
import java.util.Set;
 
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
 
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
 
import redis.clients.jedis.HostAndPort;
import redis.clients.jedis.JedisCluster;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
 
@Configuration
@PropertySource(value = "classpath:/redis.properties")
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
	// @Value("${spring.redis.host}")
	// private String host;
	// @Value("${spring.redis.port}")
	// private int port;
	// @Value("${spring.redis.timeout}")
	// private int timeout;
	private static final Logger LOG = LogManager.getLogger(RedisConfig.class);
 
	@Value("${spring.redis.host}")
	private String host;
 
	@Value("${spring.redis.port}")
	private int port;
 
	@Value("${spring.redis.timeout}")
	private int timeout;
 
	@Value("${spring.redis.pool.max-idle}")
	private int maxIdle;
 
	@Value("${spring.redis.pool.max-wait}")
	private long maxWaitMillis;
 
	/*
	 * @Value("${spring.redis.password}") private String password;
	 */
 
	// Jedis连接池
	@Bean
	public JedisPool redisPoolFactory() {
		LOG.info("JedisPool注入成功！！");
		LOG.info("redis地址：" + host + ":" + port);
		JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
		jedisPoolConfig.setMaxIdle(maxIdle);
		jedisPoolConfig.setMaxWaitMillis(maxWaitMillis);
 
		// JedisPool jedisPool = new JedisPool(jedisPoolConfig, host, port,
		// timeout, password);
		JedisPool jedisPool = new JedisPool(jedisPoolConfig, host, port, timeout);
		
		return jedisPool;
	}
	
	// JedisCluster
 
	@Bean
	public JedisCluster JedisClusterFactory() {
		LOG.info("JedisCluster创建！！");
		LOG.info("redis地址：" + host + ":" + port);
		Set<HostAndPort> jedisClusterNodes = new HashSet<HostAndPort>();
		JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
		jedisPoolConfig.setMaxIdle(maxIdle);
		jedisPoolConfig.setMaxWaitMillis(maxWaitMillis);
		jedisClusterNodes.add(new HostAndPort(host, port));
		JedisCluster jedisCluster = new JedisCluster(jedisClusterNodes, jedisPoolConfig);
		return jedisCluster;
	}
 
	@Bean
	public KeyGenerator wiselyKeyGenerator() {
		return new KeyGenerator() {
			@Override
			public Object generate(Object target, Method method, Object... params) {
				StringBuilder sb = new StringBuilder();
				sb.append(target.getClass().getName());
				sb.append(method.getName());
				for (Object obj : params) {
					sb.append(obj.toString());
				}
				return sb.toString();
			}
		};
	}
 
	@Bean
	public JedisConnectionFactory redisConnectionFactory() {
		JedisConnectionFactory factory = new JedisConnectionFactory();
		factory.setHostName(host);
		factory.setPort(port);
		factory.setTimeout(timeout); // 设置连接超时时间
		return factory;
	}
 
	@Bean
	public CacheManager cacheManager(RedisTemplate ?> redisTemplate) {
		RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
		// Number of seconds before expiration. Defaults to unlimited (0)
		cacheManager.setDefaultExpiration(10); // 设置key-value超时时间
		return cacheManager;
	}
 
	@Bean
	public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
		StringRedisTemplate template = new StringRedisTemplate(factory);
		setSerializer(template); // 设置序列化工具，这样ReportBean不需要实现Serializable接口
		template.afterPropertiesSet();
		return template;
	}
 
	private void setSerializer(StringRedisTemplate template) {
		Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(
				Object.class);
		ObjectMapper om = new ObjectMapper();
		om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
		om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
		jackson2JsonRedisSerializer.setObjectMapper(om);
		template.setValueSerializer(jackson2JsonRedisSerializer);
	}
}