RocketMQ异常（一）

RocketMQ异常(一)

org.apache.rocketmq.client.exception.MQClientException: No route info for this topic, TopicTestjjj

• 根据官方文档配置的MQ，并且复制的示例代码，但是运行就报错了。

• 参考了很多博客得出以下三种结论

  1. Broker没有开启自动创建主题
  2. Broker 没有正确连接到 Name Server
  3. Producer 没有正确链接到Name Server

• 第一步 查看启动方式是否正确
  nohup sh bin/mqbroker -n localhost:9876 autoCreateTopicEnable=true &
  官方给的是
  nohup sh bin/mqbroker -n localhost:9876 &
  然后执行
  sh bin/mqbroker -m

  chenchenghao@cch:/soft/apache-rocketmq$ sh bin/mqbroker -m
  2018-09-03 23:10:27 INFO main - namesrvAddr=
  2018-09-03 23:10:27 INFO main - brokerIP1=192.168.0.111
  2018-09-03 23:10:27 INFO main - brokerName=cch
  2018-09-03 23:10:27 INFO main - brokerClusterName=DefaultCluster
  2018-09-03 23:10:27 INFO main - brokerId=0
  2018-09-03 23:10:27 INFO main - autoCreateTopicEnable=true
  2018-09-03 23:10:27 INFO main - autoCreateSubscriptionGroup=true
  2018-09-03 23:10:27 INFO main - rejectTransactionMessage=false
  2018-09-03 23:10:27 INFO main - fetchNamesrvAddrByAddressServer=false
  2018-09-03 23:10:27 INFO main - transactionTimeOut=3000
  2018-09-03 23:10:27 INFO main - transactionCheckMax=5
  2018-09-03 23:10:27 INFO main - transactionCheckInterval=60000
  2018-09-03 23:10:27 INFO main - storePathRootDir=/home/chenchenghao/store
  2018-09-03 23:10:27 INFO main - storePathCommitLog=/home/chenchenghao/store/commitlog
  2018-09-03 23:10:27 INFO main - flushIntervalCommitLog=500
  2018-09-03 23:10:27 INFO main - commitIntervalCommitLog=200
  2018-09-03 23:10:27 INFO main - flushCommitLogTimed=false
  2018-09-03 23:10:27 INFO main - deleteWhen=04
  2018-09-03 23:10:27 INFO main - fileReservedTime=72
  2018-09-03 23:10:27 INFO main - maxTransferBytesOnMessageInMemory=262144
  2018-09-03 23:10:27 INFO main - maxTransferCountOnMessageInMemory=32
  2018-09-03 23:10:27 INFO main - maxTransferBytesOnMessageInDisk=65536
  2018-09-03 23:10:27 INFO main - maxTransferCountOnMessageInDisk=8
  2018-09-03 23:10:27 INFO main - accessMessageInMemoryMaxRatio=40
  2018-09-03 23:10:27 INFO main - messageIndexEnable=true
  2018-09-03 23:10:27 INFO main - messageIndexSafe=false
  2018-09-03 23:10:27 INFO main - haMasterAddress=
  2018-09-03 23:10:27 INFO main - brokerRole=ASYNC_MASTER
  2018-09-03 23:10:27 INFO main - flushDiskType=ASYNC_FLUSH
  2018-09-03 23:10:27 INFO main - cleanFileForciblyEnable=true
  2018-09-03 23:10:27 INFO main - transientStorePoolEnable=false
  chenchenghao@cch:/soft/apache-rocketmq$ 
  

• 第二步 查看Broker 有没有正确连接到 Name Server
  Broker启动后，项目启动成功，看到add borker success 就是对的

• 第三步 查看是否有防火墙
  博主这里并没有开启防火墙 但是依然在报这个错，后来我就怀疑官方给的demo代码有问题
  最终发现没有配置NamesrvAddr。
  这个真心坑！！!
  修改代码新增producer.setNamesrvAddr(“localhost:9876”);

注意本文主要参考了以下博客https://blog.youkuaiyun.com/wangmx1993328/article/details/81588217