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