Docker搭建Redis集群，并用Spring Boot连接Redis集群

docker搭建redis集群

• 使用 docker 搭建 Redis 集群

  • 打开防火墙并开放指定端口

    systemctl start firewalld
    
    firewall-cmd --permanent --zone=public --add-port=7001-7006/tcp
    #重新加载配置
    firewall-cmd --reload
    #查看开放的端口
    firewall-cmd --permanent --zone=public --list-ports
    

  • 下载redis镜像

    docker pull redis
    

  • 创建linux中redis容器集群文件夹（进入目录：cd /opt/docker/redis/cluster）

    mkdir -p /opt/docker/redis/cluster
    

  • 创建redis的配置模板文件：redis-cluster.tmpl（用于生成redis.conf）

    vim redis-cluster.tmpl
    

    #端口 
    port ${PORT}
    
    #非保护模式 
    protected-mode no
    
    #启用集群模式 
    cluster-enabled yes
    
    cluster-config-file nodes-6379.conf
    
    #超时时间 
    cluster-node-timeout 15000
    
    #集群各节点IP地址，记得修改为你的ip地址
    cluster-announce-ip 192.168.235.128
    
    #集群节点映射端口 
    cluster-announce-port ${PORT}
    
    #集群总线端口 
    cluster-announce-bus-port 1${PORT}
    
    #开启aof持久化策略 
    appendonly yes
    
    #后台运行
    #daemonize yes
    
    #进程号存储
    pidfile /var/run/redis_${PORT}.pid
    
    #外部访问
    bind 0.0.0.0
    
    #集群加密
    masterauth 123456
    
    requirepass 123456
    

  • 定义redis网络

    docker network create redis-net
    

  • 在/opt/docker/redis/cluster下生成redis的conf和data目录，并生成redis.conf配置文件，创建6个redis容器并启动

    #!/bin/bash
    #在/opt/docker/redis/cluster/下生成conf和data目标，并生成配置信息
    for port in `seq 7001 7006`;
    do
            mkdir -p ./${port}/conf && PORT=${port} envsubst < ./redis-cluster.tmpl > ./${port}/conf/redis.conf && mkdir -p ./${port}/data;
    done
    
    #创建6个redis容器 
    for port in `seq 7001 7006`;
    do
            docker run -d -it -p ${port}:${port} -p 1${port}:1${port} -v /opt/docker/redis/cluster/${port}/conf/redis.conf:/usr/local/etc/redis/redis.conf -v /opt/docker/redis/cluster/${port}/data:/data --privileged=true --restart always --name redis-cluster-${port} --net redis-net --sysctl net.core.somaxconn=1024 redis redis-server /usr/local/etc/redis/redis.conf;
    done
    
    #查找ip 
    for port in `seq 7001 7006`;
    do
            echo -n "$(docker inspect --format '{{ (index .NetworkSettings.Networks "redis-net").IPAddress }}' "redis-cluster-${port}")":${port}" ";
    done
    
    #换行 
    echo -e "\n"
    #输入信息
    read -p "请把输入要启动的docker容器名称，默认redis-cluster-7001：" DOCKER_NAME
    #判断是否为空
    if [ ! $DOCKER_NAME ];
            then DOCKER_NAME='redis-cluster-7001';
    fi
    
    #换行 
    echo -e "\n"
    #进入容器
    docker exec -it redis-cluster-7001 /bin/bash
    

  • 批量删除、重启镜像

    for port in `seq 7001 7006`; do \
      docker stop redis-cluster-${port};
      docker rm redis-cluster-${port};
    done
    
    for port in `seq 7001 7006`; do \
      docker restart redis-${port};
    done
    

  • 在容器（任意）内执行

    redis-cli -a 123456 --cluster create 172.20.0.2:7001 172.20.0.3:7002 172.20.0.4:7003 172.20.0.5:7004 172.20.0.6:7005 172.20.0.7:7006 --cluster-replicas 1
    

  • 查看集群信息

    redis-cli -a 123456 -p 7001 -c
    cluster nodes
    cluster info
    

  • 容器外查看集群状态

    docker ps
    

SpringBoot连接Redis集群

• SpringBoot连接Redis集群

  • 引入 commons-pool2 连接池启动总会有连接不上的问题

  • 添加依赖

    		
            <dependency>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-starter-data-redisartifactId>
            dependency>
    
            
            <dependency>
                <groupId>redis.clientsgroupId>
                <artifactId>jedisartifactId>
                <version>3.3.0version>
            dependency>
    
            
            <dependency>
                <groupId>org.redissongroupId>
                <artifactId>redisson-spring-boot-starterartifactId>
                <version>3.16.2version>
            dependency>
    

  • 配置文件 application.properties

    #redis集群配置
    spring.redis.timeout=5000
    spring.redis.password=123456
    spring.redis.cluster.max-redirects=3
    spring.redis.cluster.lettuce.pool.max-idle=10
    spring.redis.cluster.lettuce.pool.max-wait=5000
    spring.redis.cluster.lettuce.pool.max-active=200
    spring.redis.cluster.lettuce.pool.min-idle=3
    spring.redis.cluster.nodes=192.168.235.128:7001,192.168.235.128:7002,192.168.235.128:7003,192.168.235.128:7004,192.168.235.128:7005,192.168.235.128:7006
    
    

  • redis 配置类：RedisConfigProperties.java

    package com.example.demo.config;
    
    import org.springframework.boot.context.properties.ConfigurationProperties;
    import org.springframework.stereotype.Component;
    
    import java.util.List;
    
    /**
     * @author Capital Letters
     * @title: RedisConfigProperties
     * @projectName oj-homework
     * @description: TODO
     * @date 2022/5/189:45
     */
    
    @Component
    @ConfigurationProperties(prefix = "spring.redis")
    public class RedisConfigProperties {
        private Integer timeout;
        private Integer database;
        private Integer port;
        private String host;
        private String password;
        private cluster cluster;
    
        public static class cluster {
            private List<String> nodes;
    
            public List<String> getNodes() {
                return nodes;
            }
    
            public void setNodes(List<String> nodes) {
                this.nodes = nodes;
            }
        }
    
        public Integer getTimeout() {
            return timeout;
        }
    
        public void setTimeout(Integer timeout) {
            this.timeout = timeout;
        }
    
        public Integer getDatabase() {
            return database;
        }
    
        public void setDatabase(Integer database) {
            this.database = database;
        }
    
        public Integer getPort() {
            return port;
        }
    
        public void setPort(Integer port) {
            this.port = port;
        }
    
        public String getHost() {
            return host;
        }
    
        public void setHost(String host) {
            this.host = host;
        }
    
        public String getPassword() {
            return password;
        }
    
        public void setPassword(String password) {
            this.password = password;
        }
    
        public RedisConfigProperties.cluster getCluster() {
            return cluster;
        }
    
        public void setCluster(RedisConfigProperties.cluster cluster) {
            this.cluster = cluster;
        }
    }
    
    

  • RedissonConfig.java（集群模式）

    package com.example.demo.config;
    
    import org.redisson.Redisson;
    import org.redisson.config.ClusterServersConfig;
    import org.redisson.config.Config;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    import java.util.ArrayList;
    import java.util.List;
    
    /**
     * @author Capital Letters
     * @title: RedissonConfig
     * @projectName oj-homework
     * @description: TODO
     * @date 2022/5/189:48
     */
    
    
    @Configuration
    public class RedissonConfig {
    
        @Autowired
        private RedisConfigProperties redisConfigProperties;
    
        /**
         * 集群模式-添加redisson的bean
         * @return
         */
        @Bean
        public Redisson redisson() {
            //redisson版本是3.5，集群的ip前面要加上“redis://”，不然会报错，3.2版本可不加
            List<String> clusterNodes = new ArrayList<>();
            for (int i = 0; i < redisConfigProperties.getCluster().getNodes().size(); i++) {
                clusterNodes.add("redis://" + redisConfigProperties.getCluster().getNodes().get(i));
            }
            Config config = new Config();
            ClusterServersConfig clusterServersConfig = config.useClusterServers()
                    .addNodeAddress(clusterNodes.toArray(new String[clusterNodes.size()]));
    		//设置密码，如果没有密码，则注释这一行，否则启动会报错
            clusterServersConfig.setPassword(redisConfigProperties.getPassword());
            return (Redisson) Redisson.create(config);
        }
    
    }
    
    
    

  • RedissonConfig（单机模式）

    package com.example.demo.config;
    
    import org.redisson.Redisson;
    import org.redisson.config.ClusterServersConfig;
    import org.redisson.config.Config;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    import java.util.ArrayList;
    import java.util.List;
    
    /**
     * @author Capital Letters
     * @title: RedissonConfig
     * @projectName oj-homework
     * @description: TODO
     * @date 2022/5/189:48
     */
    
    
    @Configuration
    public class RedissonConfig {
    
        @Autowired
        private RedisConfigProperties redisConfigProperties;
        
        /**
         * redis://host:port
         */
        private static final String REDIS_ADDRESS = "redis://%s:%s";
    
        /**
         * 集群模式-添加redisson的bean
         * @return
         */
        @Bean
        public Redisson RedissonConfig() {
            Config config = new Config();
            config.useSingleServer().setAddress("redis://localhost:6379").setDatabase(redisConfigProperties.getDatabase());
            config.useSingleServer().setAddress(String.format(REDIS_ADDRESS, redisConfigProperties.getHost(), redisConfigProperties.getPort()))
                    .setDatabase(redisConfigProperties.getDatabase())
                    .setPassword(redisConfigProperties.getPassword());
            return (Redisson) Redisson.create(config);
        }
    
    }
    

  • RedisTemplateConfig

    package com.example.demo.config;
    
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.data.redis.connection.RedisConnectionFactory;
    import org.springframework.data.redis.core.RedisTemplate;
    import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
    import org.springframework.data.redis.serializer.StringRedisSerializer;
    
    /**
     * @author Capital Letters
     * @title: RedisTemplateConfig
     * @projectName oj-homework
     * @description: RedisTemplateConfig
     * @date 2022/5/189:51
     */
    
    @Configuration
    public class RedisTemplateConfig {
    
        @Bean
        public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) {
            RedisTemplate<Object, Object> redisTemplate = new RedisTemplate<>();
            redisTemplate.setConnectionFactory(redisConnectionFactory);
    
            // 自定义的string序列化器和fastjson序列化器
            StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
    
            // jackson 序列化器
            GenericJackson2JsonRedisSerializer jsonRedisSerializer = new GenericJackson2JsonRedisSerializer();
    
            // kv 序列化
            redisTemplate.setKeySerializer(stringRedisSerializer);
            redisTemplate.setValueSerializer(jsonRedisSerializer);
    
            // hash 序列化
            redisTemplate.setHashKeySerializer(stringRedisSerializer);
            redisTemplate.setHashValueSerializer(jsonRedisSerializer);
    
            redisTemplate.afterPropertiesSet();
    
            return redisTemplate;
        }
    }
    

  • 测试

    @Resource
    private RedisTemplate<String, Object> redisTemplate;
    redisTemplate.opsForValue().set("test", "test", 300, TimeUnit.SECONDS);