virtualmin/webmin后台打不开，service webmin restart也没有用，怎么办？首先我们要确定原因。
检查webmin是否在运行：
[root@www.654z.com]# service webmin status
Webmin is stopped =》 webmin没有启动
找原因：
[root@www.654z.com]# tail -f /var/webmin/miniserv.error
[13/Jul/2010:21:48:46 +0800] Restarting
Failed to bind to port 10000 : Address already in use
Could not listen on any ports at /usr/libexec/webmin/miniserv.pl line 456.
Error: Webmin server did not write new PID file
Failed to bind to port 10000 : Address already in use
Could not listen on any ports at /usr/libexec/webmin/miniserv.pl line 456.
Failed to bind to port 10000 : Address already in use
Could not listen on any ports at /usr/libexec/webmin/miniserv.pl line 456.
Failed to bind to port 10000 : Address already in use
Could not listen on any ports at /usr/libexec/webmin/miniserv.pl line 456.
webmin的10000的端口被占用。我们首先怀疑是webmin没有正常退出，强制关闭试一试：
[root@www.654z.com]# pkill webmin
[root@www.654z.com]# service webmin start
[root@www.654z.com]# service webmin status
Webmin is stopped =》 还是不行
看看哪个进程占用了10000端口
[root@www.654z.com]# netstat -anp |grep 10000
tcp 0 0 0.0.0.0:10000 0.0.0.0:* LISTEN 28655/perl
tcp 71 0 67.23.234.100:10000 59.35.148.206:4733 CLOSE_WAIT -
tcp 0 0 67.23.234.100:10000 58.33.74.228:1405 ESTABLISHED 29698/perl
tcp 0 0 67.23.234.100:10000 58.33.74.228:1404 ESTABLISHED 28655/perl
tcp 613 0 67.23.234.100:10000 58.215.75.62:37174 CLOSE_WAIT -
tcp 641 0 67.23.234.100:10000 72.55.174.135:45419 CLOSE_WAIT -
tcp 71 0 67.23.234.100:10000 218.18.130.31:27706 CLOSE_WAIT -
我654z.com杀：
kill 28655
kill 29698
核查下：
[root@www.654z.com]# lsof -i:10000
[root@www.654z.com]# netstat -anp |grep 10000
tcp 0 1 67.23.234.100:10000 58.33.74.228:1405 FIN_WAIT1 -
tcp 0 1 67.23.234.100:10000 58.33.74.228:1404 FIN_WAIT1 -
再重启 webmin试一试：
[root@www.654z.com]# service webmin start
[root@www.654z.com]# service webmin status
Webmin (pid 3983) is running
搞定，收工！ 更加简单的办法就是重启vps或者服务器（如果你不在乎网站暂停的话）。