一、环境说明

ip地址 主机名 操作系统版本 RocketMQ版本 JDK版本 maven版本 备注
172.16.7.91 nameserver01 centos 7.6 4.8.0 1.8.0_291 3.6 Name Server集群
172.16.7.92 nameserver03 centos 7.6 4.8.0 1.8.0_291 3.6 Name Server集群
172.16.7.93 master01 centos 7.6 4.8.0 1.8.0_291 3.6 Broker集群1
172.16.7.94 slave01 centos 7.6 4.8.0 1.8.0_291 3.6 Broker集群1
172.16.7.95 master02 centos 7.6 4.8.0 1.8.0_291 3.6 Broker集群2
172.16.7.96 slave02 centos 7.6 4.8.0 1.8.0_291 3.6 Broker集群2

二、部署概况

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

三、消息正常发送

1.Producer代码

package com.my.maven.rocketmq;

import org.apache.rocketmq.client.producer.DefaultMQProducer;
import org.apache.rocketmq.client.producer.SendResult;
import org.apache.rocketmq.common.message.Message;
import org.apache.rocketmq.remoting.common.RemotingHelper;

public class Producer {
  public static void main(String[] args) throws Exception {
      //Instantiate with a producer group name.
      DefaultMQProducer producer = new
          DefaultMQProducer("group_test_123");
      // Specify name server addresses.
      producer.setNamesrvAddr("172.16.7.91:9876;172.16.7.92:9876");
      producer.setRetryTimesWhenSendAsyncFailed(2);
      //Launch the instance.
      producer.start();
       for (int i = 0; i < 100; i++) {
          //Create a message instance, specifying topic, tag and message body.
          Message msg = new Message("topic_test_123" /* Topic */,
               "TagA" /* Tag */,
              ("NameServer Test" +
                  i).getBytes(RemotingHelper.DEFAULT_CHARSET) /* Message body */
          );
          //Call send message to deliver message to one of brokers.
          SendResult sendResult = producer.send(msg);
          System.out.printf("%s%n", sendResult);
      }
      //Shut down once the producer instance is not longer in use.
      producer.shutdown();
  }
}

发送消息NameServer Test0--NameServer Test99

2.运行Producer

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

3.发送查看

日志:

SendResult [sendStatus=SEND_OK, msgId=AC1B09F602B873D16E936A4028160000, offsetMsgId=AC10075D00002A9F0000000000000000, messageQueue=MessageQueue [topic=topic_test_123, brokerName=broker-a, queueId=8], queueOffset=0]
SendResult [sendStatus=SEND_OK, msgId=AC1B09F602B873D16E936A4028470001, offsetMsgId=AC10075D00002A9F00000000000000CA, messageQueue=MessageQueue [topic=topic_test_123, brokerName=broker-a, queueId=9], queueOffset=0]
SendResult [sendStatus=SEND_OK, msgId=AC1B09F602B873D16E936A40284C0002, offsetMsgId=AC10075D00002A9F0000000000000194, messageQueue=MessageQueue [topic=topic_test_123, brokerName=broker-a, queueId=10], queueOffset=0]
SendResult [sendStatus=SEND_OK, msgId=AC1B09F602B873D16E936A4028520003, offsetMsgId=AC10075D00002A9F000000000000025E, messageQueue=MessageQueue [topic=topic_test_123, brokerName=broker-a, queueId=11], queueOffset=0]
SendResult [sendStatus=SEND_OK, msgId=AC1B09F602B873D16E936A4028550004, offsetMsgId=AC10075D00002A9F0000000000000328, messageQueue=MessageQueue [topic=topic_test_123, brokerName=broker-a, queueId=12], queueOffset=0]
SendResult [sendStatus=SEND_OK, msgId=AC1B09F602B873D16E936A4028590005, offsetMsgId=AC10075D00002A9F00000000000003F2, messageQueue=MessageQueue [topic=topic_test_123, brokerName=broker-a, queueId=13], queueOffset=0]
……

一共100条发送记录

console查看

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

broker-a和broker-b两个分片各发送了52和48条消息

4.Consumer代码

package com.my.maven.rocketmq;

import java.util.List;

import org.apache.rocketmq.client.consumer.DefaultMQPushConsumer;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyContext;
import org.apache.rocketmq.client.consumer.listener.ConsumeConcurrentlyStatus;
import org.apache.rocketmq.client.consumer.listener.MessageListenerConcurrently;
import org.apache.rocketmq.client.exception.MQClientException;
import org.apache.rocketmq.common.consumer.ConsumeFromWhere;
import org.apache.rocketmq.common.message.MessageExt;

public class Consumer {

  public static void main(String[] args) throws InterruptedException,
          MQClientException {

      DefaultMQPushConsumer consumer = new DefaultMQPushConsumer(
               "group_test_123");
      consumer.setNamesrvAddr("172.16.7.91:9876;172.16.7.92:9876");

      consumer.subscribe("topic_test_123", "TagA || TagB");
      consumer.setConsumeFromWhere(ConsumeFromWhere.CONSUME_FROM_FIRST_OFFSET);
      consumer.registerMessageListener(new MessageListenerConcurrently() {

          public ConsumeConcurrentlyStatus consumeMessage(
                  List<MessageExt> msgs, ConsumeConcurrentlyContext context) {
              System.out.println(Thread.currentThread().getName()
                       + " Receive New Messages: " + msgs);
              MessageExt msg = msgs.get(0);
               if (msg.getTopic().equals("topic_test_123")) {
                   if (msg.getTags() != null && msg.getTags().equals("TagA")) {
                      // 获取消息体
                      String message = new String(msg.getBody());
                      System.out.println("receive TagA message:" + message);
                  } else if (msg.getTags() != null
                          && msg.getTags().equals("TagB")) {
                      // 获取消息体
                      String message = new String(msg.getBody());
                      System.out.println("receive TagB message:" + message);
                  }

              }
              // 成功
              return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
          }
      });
      consumer.start();
      System.out.println("Consumer Started.");
  }

}

5.运行Consumer

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

6.消费查看

消费日志:

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

Consumer Started.
ConsumeMessageThread_6 Receive New Messages: [MessageExt [queueId=13, storeSize=203, queueOffset=2, sysFlag=0, bornTimestamp=1626851390760, bornHost=/172.16.7.1:49540, storeTimestamp=1626851374215, storeHost=/172.16.7.95:10911, msgId=AC10075F00002A9F00000000000023AD, commitLogOffset=9133, bodyCRC=938317384, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='topic_test_123', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=3, CONSUME_START_TIME=1626851850431, UNIQ_KEY=AC1B09F602B873D16E936A402D280055, CLUSTER=MyRocketmq, WAIT=true, TAGS=TagA}, body=[78, 97, 109, 101, 83, 101, 114, 118, 101, 114, 32, 84, 101, 115, 116, 56, 53], transactionId='null'}]]
receive TagA message:NameServer Test85
ConsumeMessageThread_1 Receive New Messages: [MessageExt [queueId=13, storeSize=203, queueOffset=0, sysFlag=0, bornTimestamp=1626851390103, bornHost=/172.16.7.1:49540, storeTimestamp=1626851373560, storeHost=/172.16.7.95:10911, msgId=AC10075F00002A9F0000000000000A4D, commitLogOffset=2637, bodyCRC=1248836315, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='topic_test_123', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=3, CONSUME_START_TIME=1626851850427, UNIQ_KEY=AC1B09F602B873D16E936A402A970015, CLUSTER=MyRocketmq, WAIT=true, TAGS=TagA}, body=[78, 97, 109, 101, 83, 101, 114, 118, 101, 114, 32, 84, 101, 115, 116, 50, 49], transactionId='null'}]]
receive TagA message:NameServer Test21
ConsumeMessageThread_9 Receive New Messages: [MessageExt [queueId=5, storeSize=203, queueOffset=1, sysFlag=0, bornTimestamp=1626851390599, bornHost=/172.16.7.1:49540, storeTimestamp=1626851374054, storeHost=/172.16.7.95:10911, msgId=AC10075F00002A9F00000000000010A5, commitLogOffset=4261, bodyCRC=458807620, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='topic_test_123', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=3, CONSUME_START_TIME=1626851850434, UNIQ_KEY=AC1B09F602B873D16E936A402C87002D, CLUSTER=MyRocketmq, WAIT=true, TAGS=TagA}, body=[78, 97, 109, 101, 83, 101, 114, 118, 101, 114, 32, 84, 101, 115, 116, 52, 53], transactionId='null'}]]
receive TagA message:NameServer Test45
ConsumeMessageThread_13 Receive New Messages: [MessageExt [queueId=9, storeSize=203, queueOffset=2, sysFlag=0, bornTimestamp=1626851390743, bornHost=/172.16.7.1:49540, storeTimestamp=1626851374198, storeHost=/172.16.7.95:10911, msgId=AC10075F00002A9F0000000000002081, commitLogOffset=8321, bodyCRC=813716049, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='topic_test_123', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=3, CONSUME_START_TIME=1626851850435, UNIQ_KEY=AC1B09F602B873D16E936A402D170051, CLUSTER=MyRocketmq, WAIT=true, TAGS=TagA}, body=[78, 97, 109, 101, 83, 101, 114, 118, 101, 114, 32, 84, 101, 115, 116, 56, 49], transactionId='null'}]]
receive TagA message:NameServer Test81
ConsumeMessageThread_4 Receive New Messages: [MessageExt [queueId=5, storeSize=203, queueOffset=0, sysFlag=0, bornTimestamp=1626851389767, bornHost=/172.16.7.1:49540, storeTimestamp=1626851373464, storeHost=/172.16.7.95:10911, msgId=AC10075F00002A9F00000000000003F5, commitLogOffset=1013, bodyCRC=256673844, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='topic_test_123', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=3, CONSUME_START_TIME=1626851850433, UNIQ_KEY=AC1B09F602B873D16E936A402947000D, CLUSTER=MyRocketmq, WAIT=true, TAGS=TagA}, body=[78, 97, 109, 101, 83, 101, 114, 118, 101, 114, 32, 84, 101, 115, 116, 49, 51], transactionId='null'}]]
receive TagA message:NameServer Test13
ConsumeMessageThread_13 Receive New Messages: [MessageExt [queueId=12, storeSize=203, queueOffset=1, sysFlag=0, bornTimestamp=1626851390629, bornHost=/172.16.7.1:49540, storeTimestamp=1626851374084, storeHost=/172.16.7.95:10911, msgId=AC10075F00002A9F0000000000001632, commitLogOffset=5682, bodyCRC=472350118, reconsumeTimes=0, preparedTransactionOffset=0, toString()=Message{topic='topic_test_123', flag=0, properties={MIN_OFFSET=0, MAX_OFFSET=3, CONSUME_START_TIME=1626851850436, UNIQ_KEY=AC1B09F602B873D16E936A402CA50034, CLUSTER=MyRocketmq, WAIT=true, TAGS=TagA}, body=[78, 97, 109, 101, 83, 101, 114, 118, 101, 114, 32, 84, 101, 115, 116, 53, 50], transactionId='null'}]]
receive TagA message:NameServer Test52
……

一共消费了100条消息

console查看

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

发现消息消费一共也是100条

四、关闭一台nameserver节点

1.关闭nameserver02

[root@nameserver02 ~]# init 0

2.发送消息

再次发送100条消息

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

查看日志和console,发现新增消息100条

3.消息消费

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

消息消费也新增100条

4.结论

结论一:当一个nameserver节点宕机时,不影响消息发送和消费。

五、关闭所有nameserver节点

1.消息发送

继续发送10000条消息,发送的同时继续关闭nameserver01

[root@nameserver01 ~]# init 0

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

发送10000条消息,发送的同时关闭nameserver01,发现消息只发送了367条

2.消息消费

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

发现无法消费,无消费记录

3.结论

结论二:当所有nameserver宕机时,消息发送和接收都会无法进行。

六、开启nameserver01

1.nameserver01开机

消息发送和消费会恢复,但是会丢消息

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

 

watermark,size_14,text_QDUxQ1RP5Y2a5a6i,color_FFFFFF,t_100,g_se,x_10,y_10,shadow_20,type_ZmFuZ3poZW5naGVpdGk=

2.结论

结论三:当nameserver集群恢复时,部分消息会恢复发送和消费,同时出现部分消息丢失情况。

七、总结

总结:为保证RocketMQ集群能正常对外提供服务,需至少保证有一台nameserver服务器处于运行状态;当所有nameserver服务器宕机时,消息无法发送和消费。

 

本文所有代码和配置文件已上传github:RocketMQ_NameServer_HA_Test

单机版RocketMQ搭建详见:Centos7.6搭建RocketMQ4.8全纪录

集群版RocketMQ搭建详见:RocketMQ4.8集群搭建全纪录

集群启停详见:RocketMQ集群启停手册

集群消息收发测试:RocketMQ集群消息收发测试全纪录