weixin_43697701的博客

这是 CM版本7.6.1的bug，这个版本cm对于event store不会进行删除，所以数据会越来越大。CM7.6.1 CHF (Cumulative Hotfix)8版本中进行了修复。

下面命令设置程序尽可能不使用swap，使用swap会影响性能。在cdp集群中，一般要关掉swap，如果没有关。原因：服务器没有关swap，服务使用了swap。修改后，重启服务就不会使用swap了。

WARN clients.NetworkClient: [Consumer clientId=consumer-console-consumer-52833-1, groupId=console-consumer-52833] Bootstrap broker xx.xx.xx.xx:9092 (id: -1 rack: null) disconnected

kafka告警 kafka topic offline

because threads quota is exceeded., reportedBlock move is failed

hdfs datanode节点间balance

hdfs disk balance

Unable to view the controller. Contact the system administrator

INFO org.apache.nifi.controller.repository.FileSystemRepository: Unable to write to container default due to archive file size constraints; waiting for archive cleanup

cm 组件功能

The hostname and canonical name for this host are not consistent when checked from a Java process.

CDH/CDP集群Failover Controller启动报错2022-04-18 14:49:17,895 ERROR org.apache.hadoop.ha.ZKFailoverController: Unable to start failover controller. Parent znode does not exist.Run with -formatZK flag to initialize ZooKeeper.2022-04-18 14:49:17,896 INFO org.ap