Nginx启动的坑: nginx: [error] open() “/run/nginx.pid“ failed (2: No such file or directory)

原创已于 2022-09-23 17:23:05 修改 · 1k 阅读

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#nginx #服务器 #运维

于 2022-09-23 17:16:01 首次发布

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用什么命令启动的，就需要使用什么工具去管理

使用nginx 启动，使用systemctl管理，之后使用nginx stop关闭会导致报错，反之一样

# 使用nginx命令启动nginx
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# nginx

# 查看启动状态
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# ps -aux | grep nginx
root      905155  0.0  0.0 121288  2184 ?        Ss   15:32   0:00 nginx: master process nginx
nginx     905156  0.0  0.2 151824  8208 ?        S    15:32   0:00 nginx: worker process
nginx     905157  0.0  0.2 151824  8212 ?        S    15:32   0:00 nginx: worker process
root      905436  0.0  0.0   9208  1112 pts/0    S+   15:32   0:00 grep --color=auto nginx

# 使用nginx启动的，但是使用systemctl管理，之后会导致命令报错
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# systemctl status nginx
● nginx.service - The nginx HTTP and reverse proxy server
   Loaded: loaded (/usr/lib/systemd/system/nginx.service; disabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since Wed 2022-09-21 17:20:16 CST; 1 day 22h ago

Sep 21 17:20:16 iZ2ze58f53sxjm9z7mgn5xZ systemd[1]: Starting The nginx HTTP and reverse proxy server...
Sep 21 17:20:16 iZ2ze58f53sxjm9z7mgn5xZ systemd[1]: nginx.service: Control process exited, code=exited status=203
Sep 21 17:20:16 iZ2ze58f53sxjm9z7mgn5xZ systemd[1]: nginx.service: Failed with result 'exit-code'.
Sep 21 17:20:16 iZ2ze58f53sxjm9z7mgn5xZ systemd[1]: Failed to start The nginx HTTP and reverse proxy server.

# 报错
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# systemctl restart nginx
Job for nginx.service failed because the control process exited with error code.
See "systemctl status nginx.service" and "journalctl -xe" for details.

# 重新加载也报错
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# nginx -s reload
nginx: [error] open() "/run/nginx.pid" failed (2: No such file or directory)

# 停止也会报错
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# nginx -s stop
nginx: [error] open() "/run/nginx.pid" failed (2: No such file or directory)

# 查看对应的进程文件nginx.pid文件不存，这是因为不是使用systemctl启动的，但是使用systemctl去管理导致的错误
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# cat /run/nginx.pid
cat: /run/nginx.pid: No such file or directory

# 解决， 查询出nginx的master进程pid
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# ps -aux | grep nginx | grep master
root      905155  0.0  0.0 121288  2184 ?        Ss   15:32   0:00 nginx: master process nginx

# 将进程pid写入进程管理文件，之后就可以正常停止nginx
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# echo 905155 > /run/nginx.pid 
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# nginx -s stop
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# ps -aux | grep nginx
root      921991  0.0  0.0   9208  1072 pts/0    S+   15:40   0:00 grep --color=auto nginx

# 使用systemctl管理nginx
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# systemctl start nginx

# 查看状态正常运行
[root@iZ2ze58f53sxjm9z7mgn5xZ ~]# systemctl status nginx
● nginx.service - The nginx HTTP and reverse proxy server
   Loaded: loaded (/usr/lib/systemd/system/nginx.service; disabled; vendor preset: disabled)
   Active: active (running) since Fri 2022-09-23 15:40:36 CST; 6s ago
  Process: 922707 ExecStart=/usr/sbin/nginx (code=exited, status=0/SUCCESS)
  Process: 922705 ExecStartPre=/usr/sbin/nginx -t (code=exited, status=0/SUCCESS)
  Process: 922703 ExecStartPre=/usr/bin/rm -f /run/nginx.pid (code=exited, status=0/SUCCESS)
 Main PID: 922708 (nginx)
    Tasks: 3 (limit: 22997)
   Memory: 4.9M
   CGroup: /system.slice/nginx.service
           ├─922708 nginx: master process /usr/sbin/nginx
           ├─922709 nginx: worker process
           └─922710 nginx: worker process

Sep 23 15:40:36 iZ2ze58f53sxjm9z7mgn5xZ systemd[1]: Starting The nginx HTTP and reverse proxy server...
Sep 23 15:40:36 iZ2ze58f53sxjm9z7mgn5xZ nginx[922705]: nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
Sep 23 15:40:36 iZ2ze58f53sxjm9z7mgn5xZ nginx[922705]: nginx: configuration file /etc/nginx/nginx.conf test is successful
Sep 23 15:40:36 iZ2ze58f53sxjm9z7mgn5xZ systemd[1]: Started The nginx HTTP and reverse proxy server.