1 简介
普通集群: 默认的集群模式, ⽐如有节点 node1和node2、node3,三个节点是普通集群,但是他们仅有相同的元数据,即交换机、队列的结构;
消息只存在其中的⼀个节点⾥⾯,假如消息A,存储在node1节点,消费者连接node1个节点消费消息时,可以直接取出来;但如果 消费者是连接的是其他节点那rabbitmq会把 queue 中的消息从存储它的节点中取出,并经过连接节点转发后再发送给消费者。
问题: 假如node1故障,那node2⽆法获取node1存储未被消费的消息;如果node1持久化后故障,那需要等node1恢复后才可以正常消费。如果ndoe1没做持久化后故障,那消息将会丢失。
该模式更适合于消息⽆需持久化的场景,如⽇志传输的队列。
注意: 集群需要保证各个节点有相同的token令牌。
erlang.cookie是erlang的分布式token⽂件,集群内各个节点的erlang.cookie需要相同,才可以互相通信。
2 搭建
2.1 环境准备
192.168.38.50 node1
192.168.38.51 node2
192.168.38.52 node3
2.2 启动
2.2.1 node1
docker run -d -h node1 --name rabbitMq \
--add-host node1:192.168.38.50 \
--add-host node2:192.168.38.51 \
--add-host node3:192.168.38.52 \
-p4369:4369 -p5671-5672:5671-5672 -p15671-15672:15671-15672 -p 25672:25672 \
-e RABBITMQ_NODENAME=rabbitmq@node1 \
-e RABBITMQ_ERLANG_COOKIE='rosh_rabbitmq_cluster' \
-e RABBITMQ_DEFAULT_USER=admin \
-e RABBITMQ_DEFAULT_PASS=admin \
rabbitmq:management
2.2.2 node2
docker run -d -h node2 --name rabbitMq \
--add-host node1:192.168.38.50 \
--add-host node2:192.168.38.51 \
--add-host node3:192.168.38.52 \
-p4369:4369 -p5671-5672:5671-5672 -p15671-15672:15671-15672 -p 25672:25672 \
-e RABBITMQ_NODENAME=rabbitmq@node2 \
-e RABBITMQ_ERLANG_COOKIE='rosh_rabbitmq_cluster' \
-e RABBITMQ_DEFAULT_USER=admin \
-e RABBITMQ_DEFAULT_PASS=admin \
rabbitmq:management
2.2.3 node3
docker run -d -h node3 --name rabbitMq \
--add-host node1:192.168.38.50 \
--add-host node2:192.168.38.51 \
--add-host node3:192.168.38.52 \
-p4369:4369 -p5671-5672:5671-5672 -p15671-15672:15671-15672 -p 25672:25672 \
-e RABBITMQ_NODENAME=rabbitmq@node3 \
-e RABBITMQ_ERLANG_COOKIE='rosh_rabbitmq_cluster' \
-e RABBITMQ_DEFAULT_USER=admin \
-e RABBITMQ_DEFAULT_PASS=admin \
rabbitmq:management
2.3 加入集群
2.3.1 节点1
docker exec -it rabbitMq bash
rabbitmqctl stop_app
rabbitmqctl reset
rabbitmqctl start_app
#查看状态
rabbitmqctl cluster_status
2.3.2 节点2、节点3
docker exec -it rabbitMq bash
rabbitmqctl stop_app
rabbitmqctl reset
rabbitmqctl join_cluster --ram rabbitmq@node1
rabbitmqctl start_app
2.3.3 查看节点信息
命令: rabbitmqctl cluster_status
描述: 访问主节点控制台
3 整合SpringBoot
3.1 pom
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.example</groupId>
<artifactId>java-maven</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.3.0.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<!--日志-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</dependency>
<!--rabbitmq-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-amqp</artifactId>
</dependency>
<!--公用包-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.71</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.2</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>2.3.0.RELEASE</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
3.2 application.yml
server:
port: 8080
spring:
rabbitmq:
username: admin
password: admin
virtual-host: /
#集群
addresses: 192.168.38.50:5672,192.168.38.51:5672,192.168.38.52:5672
#手动消费消息
listener:
simple:
acknowledge-mode: manual
3.3 RabbitMqConsts
public final class RabbitMqConsts {
private RabbitMqConsts() {
}
public static final String DIRECT_EXCHANGE_NAME = "direct_exchange";
public static final String DIRECT_QUEUE = "direct_queue";
public static final String ROUTING_KEY = "direct_routing_key";
}
3.4 RabbitMqConfig
@Configuration
public class RabbitMqConfig {
/**
* direct交换机
*/
@Bean
public Exchange directExchange() {
return ExchangeBuilder.directExchange(RabbitMqConsts.DIRECT_EXCHANGE_NAME).durable(true).build();
}
/**
* 队列
*/
@Bean
public Queue directQueue() {
return QueueBuilder.durable(RabbitMqConsts.DIRECT_QUEUE).build();
}
/**
* 绑定关系
*/
@Bean
public Binding directBinding() {
return BindingBuilder.bind(directQueue()).to(directExchange()).with(RabbitMqConsts.ROUTING_KEY).noargs();
}
}
3.5 RabbitmqConsumer
@Component
@RabbitListener(queues = RabbitMqConsts.DIRECT_QUEUE)
@Slf4j
public class RabbitmqConsumer {
@RabbitHandler
public void receiveMessage(Message message, String body, Channel channel) throws IOException {
log.info("接收到消息:{}", body);
long deliveryTag = message.getMessageProperties().getDeliveryTag();
channel.basicAck(deliveryTag, false);
}
}
3.6 Controller
@RestController
@RequestMapping("/provider")
public class ProviderController {
@Autowired
private RabbitTemplate rabbitTemplate;
@GetMapping("/send")
public String send() {
String message = "Hello SpringBoot RabbitMq";
rabbitTemplate.convertAndSend(RabbitMqConsts.DIRECT_EXCHANGE_NAME, RabbitMqConsts.ROUTING_KEY, message);
return "发送成功";
}
}
3.7 启动类
@SpringBootApplication
public class RoshSerucityApplication {
public static void main(String[] args) {
SpringApplication.run(RoshSerucityApplication.class);
}
}
3.8 启动
描述: 查看队列。
测试: 发送消息。
4 挂掉node1节点测试
4.1 停掉node1
docker stop rabbitMq
4.2 查看node2 控制台
4.3 发送消息
4.4 node1重启
4.5 查看node2控制台
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