释放占用端口

目录

1. 找到系统当前所有的端口

2. 找到对应端口在系统中的进程 ID(PID)

3. 使用 kill -9 [PID] 命令结束进程

---

1. 找到系统当前所有的端口

使用 netstat 命令查找本机各端口的网络连接情况

~]netstat -nulpt#结果如下 Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 127.0.0.1:6379 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:1997 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN tcp 0 0 127.0.0.1:9000 0.0.0.0:* LISTEN tcp6 0 0 :::80 :::* LISTEN tcp6 0 0 :::22 :::* LISTEN tcp6 0 0 ::1:25 :::* LISTEN tcp6 0 0 :::3306 :::* LISTEN

这里我们要找的是 80与443 端口

2. 找到对应端口在系统中的进程 ID(PID)

依据查找到的 1997 端口找到对应进程, lsof -i :1997, 注意 : 冒号不要漏掉了

lsof -i:80#结果如下 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME tke-gatew 6360 root 10u IPv6 6410452 0t0 TCP *:http (LISTEN) [root@VM-0-114-centos ~]# lsof -i:443 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME tke-gatew 7627 root 9u IPv6 7717644 0t0 TCP *:https (LISTEN) ......... ->172.80.31.2:https (ESTABLISHED) galaxy 25638 root 8u IPv4 6276795 0t0 TCP <机密省略>:57802- ..........

3. 使用 kill -9 [PID] 命令结束进程

通过 lsof 命令我们找到了进程的 PID: 29416,接下来就是使用 kill -9 [PID] 把进程结束就好了

kill -9 6360 kill -9 25638 kill -9 7627

到这里就 OK 了，不过为了保险起见，再次执行 netstat -tln 确认是否结束了端口占用

 前情提要

在布置k8s的时候发现容器报错如

~]kubectl get pods -A -o wide ..... pot   nginx-ingress-nginx-ingress-85d747cfb4-9hk72   0/1   CrashLoopBackOff .....

然后想describe查看了一下报错如下

~]kubectl describe pod -n pot nginx-ingress-nginx-ingress-85d747cfb4-9hk72 .........Warning  BackOff  3m14s (x613 over 137m)  kubelet  Back-off restarting failed container

最后logs查看发现端口被占用

~]# kubectl logs pods -n pot nginx-ingress-nginx-ingress-85d747cfb4-9hk72 Error from server (NotFound): pods "pods" not found [root@VM-0-114-centos ~]# kubectl logs -n pot nginx-ingress-nginx-ingress-85d747cfb4-9hk72 I1104 10:51:46.738108 1 main.go:169] Starting NGINX Ingress controller Version=1.6.3 GitCommit=b9378d56 2021/11/04 10:51:46 [emerg] 19#19: bind() to 0.0.0.0:80 failed (98: Address already in use) nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use) 2021/11/04 10:51:46 [emerg] 19#19: bind() to 0.0.0.0:443 failed (98: Address already in use) ....... 2021/11/04 10:51:46 [notice] 19#19: try again to bind() after 500ms 2021/11/04 10:51:46 [emerg] 19#19: still could not bind() nginx: [emerg] still could not bind()

运用了以上步骤之后回复正常

pot nginx-ingress-nginx-ingress-85d747cfb4-9hk72 1/1 Running

总结

以上是生活随笔为你收集整理的释放占用端口的全部内容，希望文章能够帮你解决所遇到的问题。

如果觉得生活随笔网站内容还不错，欢迎将生活随笔推荐给好友。