报错如下
ERROR org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Error getting localhost name. Using 'localhost'...
java.net.UnknownHostException: cyb: cyb: Name or service not known
java.lang.RuntimeException: Could not resolve Kerberos principal name: java.net.UnknownHostException: cyb: cyb: Name or service not known
把 /etc/hostname
内容注释掉或删掉
这样不行用
hostnamect set-hostname 改成你hosts的名字