解决：Job for nginx.service failed because the control process exited with error code

解决启动nginx时报错“Job for nginx.service failed because the control process exited with error code”

• 在安装完nginx时启动

[root@qmfz nginx]# systemctl start nginx
Job for nginx.service failed because the control process exited with error code. See "systemctl status nginx.service" and "journalctl -xe" for details.
[root@qmfz nginx]# nginx
nginx: [emerg] 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)
nginx: [emerg] 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)
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] still could not bind()

• 我们先查看一下nginx服务情况

[root@qmfz nginx]# systemctl status nginx.service
● nginx.service
   Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since 三 2021-01-20 12:22:58 CST; 1min 12s ago
  Process: 13931 ExecStart=/usr/local/nginx/sbin/nginx (code=exited, status=1/FAILURE)

1月 20 12:22:56 qmfz nginx[13931]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Add...se)
1月 20 12:22:56 qmfz nginx[13931]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Add...se)
1月 20 12:22:57 qmfz nginx[13931]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Add...se)
1月 20 12:22:57 qmfz nginx[13931]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Add...se)
1月 20 12:22:58 qmfz nginx[13931]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Add...se)
1月 20 12:22:58 qmfz nginx[13931]: nginx: [emerg] still could not bind()
1月 20 12:22:58 qmfz systemd[1]: nginx.service: control process exited, code=exited status=1
1月 20 12:22:58 qmfz systemd[1]: Failed to start nginx.service.
1月 20 12:22:58 qmfz systemd[1]: Unit nginx.service entered failed state.
1月 20 12:22:58 qmfz systemd[1]: nginx.service failed.
Hint: Some lines were ellipsized, use -l to show in full.

• (98: Add…se)端口已被占用，我们看看是被什么占用了

[root@qmfz nginx]# netstat -apn|grep :80
tcp        0      0 192.168.10.140:53002    14.17.102.87:80         TIME_WAIT   -            
tcp6       0      0 127.0.0.1:8005          :::*                    LISTEN      2450/java    
tcp6       0      0 :::8009                 :::*                    LISTEN      2450/java    
tcp6       0      0 :::8080                 :::*                    LISTEN      2450/java    
tcp6       0      0 :::80                   :::*                    LISTEN      987/httpd    

PS:没有netstat这个命令，可以使用yum install net-tools安装。

• 我们可以看出是被httpd占用了80端口，可以停止该服务或者更改nginx的端口。

[root@qmfz nginx]# service httpd stop
Redirecting to /bin/systemctl stop httpd.service

• 最后启动nginx就可以了