编程时要保持这种心态：就好像将来要维护你这些代码的人是一位残暴的精神病患者，而且他知道你住在哪。-Martin Golding

Docker三剑客之Compose搭建Redis伪分布式集群（3）

image

来源:Docker官方文档

Docker Compose

更对精彩内容请关注我的公众号（看相声也要敲代码）
负责实现对基于Docker容器的多应用服务的快速编排，定义并运行多个Docker容器的应用，允许用户编写yaml文件关联容器，Compose默认管理对象是服务栈，通过子命令对栈中多个服务进行便捷生命周期管理。

关键概念：

• 任务:一个容器被称为一个任务，任务是独一无二的id,同一个服务多个任务序号递增

• 服务：某个相同应用镜像的容器副本集合，一个服务可以横向扩展为多个实例

• 服务栈：由多个服务组成，配合完成特定业务

Docker Compose安装Redis伪分布式集群详细步骤

1、安装docker-compose

  # 下载
  $ curl -L github对应版本
  # 确认安装是否完成
  $ docker-compose -v
  docker-compose version 1.28.5, build c4eb3a1f

2、拉取Redis镜像

    docker pull redis:latest

3、编写redis-cluster.template模板

  port ${PORT}
  protected-mode no
  cluster-enabled yes
  cluster-config-file nodes.conf
  cluster-node-timeout 5000
  cluster-announce-ip 192.168.28.1 # 宿主机IP即可
  cluster-announce-port ${PORT}
  cluster-announce-bus-port 1${PORT}
  appendonly yes
  appendfsync everysec
  no-appendfsync-on-rewrite no
  auto-aof-rewrite-percentage 100
  auto-aof-rewrite-min-size 64mb

4、创建本地conf文件

for port in `seq 7001 7006` ; do \
    mkdir -p . redis-cluster/${port}/conf \
    && PORT=${port} envsubst < redis-cluster.template > redis-cluster/${port}/conf/redis.conf \
    && mkdir -p ./redis-cluster/${port}/data; \
done

5、编写redis-cluster.yml

version : '3.7'
services:
  redis7001:
    image: 'redis'
    container_name: redis7001
    command:
      ["redis-server", "/usr/local/etc/redis/redis.conf"]
    volumes:
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7001/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7001/data:/data
    ports:
      - "7001:7001"
      - "17001:17001"
    environment:
      - TZ=Asia/Shanghai
  redis7002:
    image: 'redis'
    container_name: redis7002
    command:
      ["redis-server", "/usr/local/etc/redis/redis.conf"]
    volumes:
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7002/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7002/data:/data
    ports:
      - "7002:7002"
      - "17002:17002"
    environment:
      - TZ=Asia/Shanghai
  redis7003:
    image: 'redis'
    container_name: redis7003
    command:
      ["redis-server", "/usr/local/etc/redis/redis.conf"]
    volumes:
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7003/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7003/data:/data
    ports:
      - "7003:7003"
      - "17003:17003"
    environment:
      - TZ=Asia/Shanghai
  redis7004:
    image: 'redis'
    container_name: redis7004
    command:
      ["redis-server", "/usr/local/etc/redis/redis.conf"]
    volumes:
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7004/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7004/data:/data
    ports:
      - "7004:7004"
      - "17004:17004"
    environment:
      - TZ=Asia/Shanghai
  redis7005:
    image: 'redis'
    container_name: redis7005
    command:
      ["redis-server", "/usr/local/etc/redis/redis.conf"]
    volumes:
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7005/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7005/data:/data
    ports:
      - "7005:7005"
      - "17005:17005"
    environment:
      - TZ=Asia/Shanghai
  redis7006:
    image: 'redis'
    container_name: redis7006
    command:
      ["redis-server", "/usr/local/etc/redis/redis.conf"]
    volumes:
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7006/conf/redis.conf:/usr/local/etc/redis/redis.conf
      - /F/ideaProject/metaapp-materialplatform/redis-cluster/redis-cluster/7006/data:/data
    ports:
      - "7006:7006"
      - "17006:17006" 
    environment:
      - TZ=Asia/Shanghai

6、执行yml文件

  docker-compose -f redis-cluster.yml up -d

7、启动redis集群

  docker exec -it redis7001 redis-cli -p 7001 --cluster create 192.168.28.1:7001 192.168.28.1:7002 192.168.28.1:7003 192.168.28.1:7004 192.168.28.1:7005 192.168.28.1:7006 --cluster-replicas 1

8、测试

  docker exec -it redis7001 redis-cli -h 192.168.28.1 -p 7005 ping
  docker exec -it redis7001 redis-cli -h 192.168.28.1 -p 7005 -c  # 集群启动需要添加-c

9、简单搭建Springboot服务使用Redis伪分布式集群

1. maven依赖

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-pool2</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>

yaml文件配置

  spring:
    redis:
      connect-timeout: 6000
      cluster:
        max-redirects: 3
        nodes:
          - 192.168.28.1:7001
          - 192.168.28.1:7002
          - 192.168.28.1:7003
          - 192.168.28.1:7004
          - 192.168.28.1:7005
          - 192.168.28.1:7006
      lettuce:
        pool:
          max-active: 1000
          max-idle: 10
          min-idle: 5
          max-wait: -1

image.gif

redis配置Bean

  @Configuration
  @AutoConfigureAfter(RedisAutoConfiguration.class)
  public class RedisConfigurer {
      @Bean
      public RedisTemplate<String,Object> redisClusterTemplate(LettuceConnectionFactory factory){
          RedisTemplate<String,Object> template = new RedisTemplate<>();
          template.setKeySerializer(new StringRedisSerializer());
          template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
          template.setConnectionFactory(factory);
          return template;
      }
  }

代码测试

  @RestController
  public class RedisClusterController {
    private final RedisTemplate<String,Object> redisTemplate;
    @Autowired
    public RedisClusterController(RedisTemplate<String, Object> redisTemplate) {
        this.redisTemplate = redisTemplate;
    }
    @GetMapping("/clusterOperate")
    public String clusterOperate(){
        redisTemplate.opsForValue().set("www.kxscode.com","看相声也要敲代码");
        return String.valueOf(redisTemplate.opsForValue().get("www.kxscode.com"));
    }
}

远程仓库

参考

基于docker-compose搭建redis集群