docker搭建redis(主从)集群

准备

先下载一个单体redis

修改redis.conf文件中

# 端口
port 6379  -> 6370
​#生成数据文件位置
dir ./ -> dir /data
# 设置可连接的ip
bind 127.0.0.1 -::1 -> bind 0.0.0.0
# 启用集群
cluster-enabled yes    -> cluster-enabled yes

复制redis文件到6份 分别修改各自对应的端口号

vim startRedisCluster.sh

docker run -p 6370:6370 -p 16370:16370 --name redis-6370 --restart=always \
 -v /usr/local/docker/redisCluster/redis-6370/config/redis.conf:/etc/redis/redis.conf \
 -v /usr/local/docker/redisCluster/redis-6370/data:/data \-d redis:6.2.6 redis-server /etc/redis/redis.conf
  echo "节点：redis-6370 启动成功"

docker run -p 6371:6371 -p 16371:16371 --name redis-6371 --restart=always \
 -v /usr/local/docker/redisCluster/redis-6371/config/redis.conf:/etc/redis/redis.conf \
 -v /usr/local/docker/redisCluster/redis-6371/data:/data \-d redis:6.2.6 redis-server /etc/redis/redis.conf
  echo "节点：redis-6371 启动成功"
+0

docker run -p 6372:6372 -p 16372:16372 --name redis-6372 --restart=always \
 -v /usr/local/docker/redisCluster/redis-6372/config/redis.conf:/etc/redis/redis.conf \
 -v /usr/local/docker/redisCluster/redis-6372/data:/data \-d redis:6.2.6 redis-server /etc/redis/redis.conf
  echo "节点：redis-6372 启动成功"

docker run -p 6373:6373 -p 16373:16373 --name redis-6373 --restart=always \
 -v /usr/local/docker/redisCluster/redis-6373/config/redis.conf:/etc/redis/redis.conf \
 -v /usr/local/docker/redisCluster/redis-6373/data:/data \-d redis:6.2.6 redis-server /etc/redis/redis.conf
  echo "节点：redis-6373 启动成功"

docker run -p 6374:6374 -p 16374:16374 --name redis-6374 --restart=always \
 -v /usr/local/docker/redisCluster/redis-6374/config/redis.conf:/etc/redis/redis.conf \
 -v /usr/local/docker/redisCluster/redis-6374/data:/data \-d redis:6.2.6 redis-server /etc/redis/redis.conf
  echo "节点：redis-6374 启动成功"

docker run -p 6375:6375 -p 16375:16375 --name redis-6375 --restart=always \
 -v /usr/local/docker/redisCluster/redis-6375/config/redis.conf:/etc/redis/redis.conf \
 -v /usr/local/docker/redisCluster/redis-6375/data:/data \-d redis:6.2.6 redis-server /etc/redis/redis.conf
  echo "节点：redis-6375 启动成功"

chmod -R 777 startRedisCluster.sh

 ./startRedisCluster.sh

效果如图

 构建集群环境

# 安装集群基本环境
yum -y install zlib ruby rubygems

进入一个redis容器 这里进去第一个6370容器

#进入任意一个创建的redis容器，以redis-6370为例
docker exec -it redis-6370 /bin/bash

# 如果设置了redis密码在前面加[-a '密码']即可
redis-cli --cluster create 本机IP:6370 本机IP:6371 本机IP:6372 本机IP:6373 本机IP:6374 本机IP:6375 --cluster-replicas 1
​
redis-cli -a LYproject33 --cluster create 47.100.81.155:6370 47.100.81.155:6371 47.100.81.155:6372 47.100.81.155:6373 47.100.81.155:6374 47.100.81.155:6375 --cluster-replicas 1

首先排查防火墙是否开放端口(6370,16370)总线端口必须开启

输入yes

成功

#参数解释
    # --cluster-replicas 1： 参数后面的数字表示的是主从比例，这里的1，表示1个主节点对应1个从节点。上面创建了6个reids容器，所以主从分配就是3个主节点，3个从节点。
    # 注意 主节点最少3个，3个才能保证集群的健壮性。
    
#组建成功，进入redis查看一下集群节点信息：
redis-cli -c -p 6370
# 查看集群状态
cluster info
# 主从关系
cluster nodes

f5c容器id -p 指定端口 -a 指定密码 -c 使用集群模式

集群如果存入key 却不显示 可以更换集群节点尝试

集群如果存入key 却取不出来 可以加如下配置

redis序列化配置

package com.dhx.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
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.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
@EnableCaching //开启注解
public class RedisConfig extends CachingConfigurerSupport {
    /**
     * retemplate相关配置
     * 序列化配置，如果没有配置序列化的话可能会出现往redis存了值，但是获取不到
     */
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(factory);
        Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jacksonSeial.setObjectMapper(om);
        template.setValueSerializer(jacksonSeial);
        template.setKeySerializer(new StringRedisSerializer());
        template.setHashKeySerializer(new StringRedisSerializer());
        template.setHashValueSerializer(jacksonSeial);
        template.afterPropertiesSet();
        return template;
    }
}

成功后

修改nodes.conf

里面有一个节点ip默认是主机ip改成虚拟机ip