记一次查询端口占用被哪个程序占用

确实占用

[frf@hadoop102 logs]$ netstat -tunlp | grep 8080
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)tcp6       0      0 :::8080                 :::*                    LISTEN      12211/java

查看被谁占用

[frf@hadoop102 logs]$ jps -ml | grep 12211
12211 org.apache.zookeeper.server.quorum.QuorumPeerMain /opt/module/zookeeper/bin/../conf/zoo.cfg

喵的是zookeeper