Solution to Linux Centos7 system port occupancy problem

  • 2020-06-23 02:35:15
  • OfStack

preface

The server is ES3en-Centos7 system. A very strange situation happened yesterday. Even when tomcat is closed, it still shows that its port 8080 is occupied.

1. View the process netstat-lnp |grep 8080 occupying the port


[root@izbp109iqt20o2h63tpcuvz java]# netstat -lnp|grep 8080
tcp6  0  0 :::8080     :::*     LISTEN  4486/java 

As you can see, one java process of 4486 occupies port 8080.

2. View process information ps 4486


[root@izbp109iqt20o2h63tpcuvz java]# ps 4486
 PID TTY  STAT TIME COMMAND
 4486 ?  Sl  1:16 /usr/local/java/jdk1.8.0_152/jre/bin/java -Djava.util.logging.config.file=/usr/local/j

Log related programs

3. Kill process ES23en-9 4486


[root@izbp109iqt20o2h63tpcuvz java]# kill -9 4486
[root@izbp109iqt20o2h63tpcuvz java]# netstat -lnp|grep 8080
[root@izbp109iqt20o2h63tpcuvz java]# 

After killing the process, look again at the port occupancy and find that there is no port occupancy. Problem resolved.

The complete operation record is as follows:


[root@izbp109iqt20o2h63tpcuvz java]# netstat -lnp|grep 8080
tcp6  0  0 :::8080     :::*     LISTEN  4486/java   
[root@izbp109iqt20o2h63tpcuvz java]# ps 4486
 PID TTY  STAT TIME COMMAND
 4486 ?  Sl  1:16 /usr/local/java/jdk1.8.0_152/jre/bin/java -Djava.util.logging.config.file=/usr/local/j
[root@izbp109iqt20o2h63tpcuvz java]# kill -9 4486
[root@izbp109iqt20o2h63tpcuvz java]# netstat -lnp|grep 8080
[root@izbp109iqt20o2h63tpcuvz java]# 

conclusion


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