YARN Registry DNS启动提示“53端口被占用”错误的解决方法

错误提示：

ERROR dns.PrivilegedRegistryDNSStarter (PrivilegedRegistryDNSStarter.java:init(61)) - Error initializing Registry DNS
java.net.BindException: Problem binding to [xxx:53] java.net.BindException: Address already in use; For more details see: http://wiki.apache.org/hadoop/BindException

或

resource_management.core.exceptions.ExecutionFailed: Execution of 'ambari-sudo.sh  -H -E /usr/hdp/xxx/hadoop-yarn/bin/yarn --config /usr/hdp/xxx/hadoop/conf --daemon start registrydns' returned 1. ERROR: Cannot set priority of registrydns process xxx

 

原因：YARN Registry DNS的默认端口53本其它进程占用了。

 

方案一：

1.查询占用53端口的进程/服务

lsof -i:53

查询到PID和User，这里的User一般是systemd-resolved

 

2.停止占用53端口的进程/服务

systemctl stop systemd-resolved

 

3.在Ambari界面启动YARN Registry DNS，成功。

 

 

方案二：

直接在Ambari界面，YARN -> configs -> advanced -> RegistryDNS Bind Port，修改端口后保存。

 

转载于:https://www.cnblogs.com/maluscalc/p/11138665.html