Nginx不在CentOS中工作？

Question

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
[root@localhost bin]# nginx
nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] bind() to [::]: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 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] bind() to [::]: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 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] bind() to [::]: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 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] bind() to [::]: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 0.0.0.0:443 failed (98: Address already in use)
nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
nginx: [emerg] still could not bind()
[root@localhost bin]# systemctl status nginx.service
● 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 Mon 2018-04-09 16:35:28 IST; 6min ago
  Process: 22654 ExecStart=/usr/sbin/nginx (**code=exited, status=1/FAILURE**)
  Process: 22597 ExecStartPre=/usr/sbin/nginx -t (code=exited, status=0/SUCCESS)
  Process: 22595 ExecStartPre=/usr/bin/rm -f /run/nginx.pid (code=exited, status=0/SUCCESS)

Apr 09 16:35:27 localhost.localdomain nginx[22654]: nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)
Apr 09 16:35:27 localhost.localdomain nginx[22654]: nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
Apr 09 16:35:28 localhost.localdomain nginx[22654]: nginx: [emerg] bind() to 0.0.0.0:80 failed (98: Address already in use)
Apr 09 16:35:28 localhost.localdomain nginx[22654]: nginx: [emerg] bind() to 0.0.0.0:443 failed (98: Address already in use)
Apr 09 16:35:28 localhost.localdomain nginx[22654]: nginx: [emerg] bind() to [::]:80 failed (98: Address already in use)
Apr 09 16:35:28 localhost.localdomain systemd[1]: nginx.service: control process exited, code=exited status=1
Apr 09 16:35:28 localhost.localdomain nginx[22654]: nginx: [emerg] still could not bind()
Apr 09 16:35:28 localhost.localdomain systemd[1]: **Failed to start The nginx HTTP and reverse proxy server.**
Apr 09 16:35:28 localhost.localdomain systemd[1]: Unit nginx.service entered failed state.
Apr 09 16:35:28 localhost.localdomain systemd[1]: nginx.service failed.

错误：活动：自2018-04-09周一16:35:28 IST以来失败（结果：退出代码）；进程：22654 ExecStart=/usr/sbin/nginx（代码=退出，状态=1/失败）Apr 09 16:35:28 localhost。localdomain systemd[1]：无法启动nginx HTTP和反向代理服务器。

Answer 1

该错误基本上意味着其他应用程序正在使用这些默认端口。您可以使用以下方法检查：

sudo netstat-tulpn

获取已经使用该端口的进程的PID，并用杀死命令发送信号。

sudo杀死-2

在我的例子中，apache http运行在同一个端口上，我不想杀死这个进程，所以我将nginx的默认端口更改为其他端口。这就是我的nginx.conf现在的样子。

server {
    listen       3000 default_server;
    listen       [::]:3000 default_server;
    server_name  _;
    root         /usr/share/nginx/html;

    # Load configuration files for the default server block.
    include /etc/nginx/default.d/*.conf;

    location / {
    }

    error_page 404 /404.html;
        location = /40x.html {
    }

    error_page 500 502 503 504 /50x.html;
        location = /50x.html {
    }
}

此外，请确保在此文件中，user设置为您登录的用户（对于exroot）。

如果不是这样，您可以尝试此处提到的其他选项。

您可以使用nginx-t来测试文件nginx。conf的语法正确。