解决Linux主机tomcat的80端口被占用导致网站无法访问的问题

停止tomcat进程shutdown.sh，停止tomcat后telnet 127.0.0.1 80,发现80端口依然可用。netstat -an|grep 80 查看发现有许多80端口进程在里面，使用kill pid命令终止进程，无用。使用lsof -i :80|grep -v "PID"|awk '{print "kill -9",$2}'命令后所有80端口进程删除。重新启动tomcat，系统正常运行。不过为什么tomcat在关闭时却不能将80端口的进程一并关闭的原因需要分析一下。

[root@gzcourt bin]# netstat -an |grep 80
tcp 0 0 ::ffff:127.0.0.1:8005 :::* LIST
EN
tcp 0 0 :::8009 :::* LIST
EN
tcp 0 0 :::80 :::* LIST
EN
tcp 0 0 :::8080 :::* LIST
EN
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:202.160.179.12:36057 TIME
_WAIT
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:202.160.178.15:39176 TIME
_WAIT
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:218.20.57.173:55001 ESTA
BLISHED
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:218.20.57.173:3516 ESTA
BLISHED
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:218.20.57.173:55037 ESTA
BLISHED
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:218.20.57.173:3518 ESTA
BLISHED
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:61.135.162.208:57893 TIME
_WAIT
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:210.72.4.122:39196 ESTA
BLISHED
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:59.32.124.136:22529 ESTA
BLISHED
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:218.20.57.173:55222 ESTA
BLISHED
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:218.20.57.173:3510 ESTA
BLISHED
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:59.32.124.136:22530 ESTA
BLISHED
tcp 0 0 ::ffff:172.16.1.153:80 ::ffff:210.72.4.122:39198 ESTA
BLISHED
unix 3 [ ] STREAM CONNECTED 6880 /tmp/.X11-unix/X0
# lsof -i :80|grep -v "PID"|awk '{print "kill -9",$2}'|sh

以上脚本可以清除80端口的进程

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