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Nginx 无法重新启动

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Nginx 无法重新启动

我知道这类似的问题，但我似乎无法通过阅读它解决我的问题。

背景

我正在努力奔跑计时表通过 Nginx。我已经运行了一些 Nginx 块。

对于这一点，我遵循以下示例这里，因此我在这个位置设置了以下文件/etc/nginx/sites-available/chronograf.baseurl.com：：

server {
  server_name chronograf.baseurl.com www.chronograf.baseurl.com;

  location / {
   proxy_pass http://localhost:8888/;
   proxy_set_header Host $host;
   proxy_set_header X-Real-IP $remote_addr;
   proxy_set_header X-Forwarded-Host $host;
   proxy_set_header X-Forwarded-Server $host;
   proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
  }
}

然后我检查语法sudo nginx -t并发现一切正常：

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

最后我运行sudo systemctl restart nginx并失败了：

Job for nginx.service failed because the control process exited with error code.
See "systemctl status nginx.service" and "journalctl -xe" for details.

帖子/var/log/nginx/error.log：

2020/05/27 02:22:27 [info] 4740#4740: Using 32768KiB of shared memory for nchan in /etc/nginx/nginx.conf:63
2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:80 failed (98: Address already in use)
2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:443 failed (98: Address already in use)
2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:80 failed (98: Address already in use)
2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:443 failed (98: Address already in use)
2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:80 failed (98: Address already in use)
2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:443 failed (98: Address already in use)
2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:80 failed (98: Address already in use)
2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:443 failed (98: Address already in use)
2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:80 failed (98: Address already in use)
2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:443 failed (98: Address already in use)
2020/05/27 02:22:27 [emerg] 4751#4751: still could not bind()

有人可以帮我调试这个吗？

更新 1

根据@Pandurang 的建议：

  1. 我停下nginx来跑步sudo systemctl stop nginx。
  2. 然后我运行ps -ef | grep nginx命令。

它返回以下输出：

root       846   821  0 Apr13 ?        00:45:11 runsv nginx
root       870   846  0 Apr13 ?        00:47:39 svlogd -tt /var/log/gitlab/nginx
stelian   3028  2943  0 15:47 pts/0    00:00:00 grep --color=auto nginx
root     32462   846  0 01:47 ?        00:00:00 nginx: master process /opt/gitlab/embedded/sbin/nginx -p /var/opt/gitlab/nginx
gitlab-+ 32493 32462  0 01:47 ?        00:00:00 nginx: worker process
gitlab-+ 32494 32462  0 01:47 ?        00:00:00 nginx: worker process
gitlab-+ 32495 32462  0 01:47 ?        00:00:00 nginx: worker process
gitlab-+ 32496 32462  0 01:47 ?        00:01:18 nginx: worker process
gitlab-+ 32497 32462  0 01:47 ?        00:00:00 nginx: cache manager process

我怀疑 nginx 和 GitLab 之间存在冲突？

答案1

2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:80 failed (98: Address already in use)
2020/05/27 02:22:27 [emerg] 4751#4751: bind() to 0.0.0.0:443 failed (98: Address already in use)

问题是端口 80 和 443 已在某些地方被使用：Address already in use

调试的下一步是使用netstat和来确定哪个进程正在监听（或“绑定到”）相关端口egrep：

sudo netstat -nap | egrep ':(80|443)\s.*LISTEN'

（需要 root 权限netstat -p，打印相关进程信息）

以下是 nginx 正在监听的一个例子：

$ sudo netstat -nap | egrep ':(80|443)\s.*LISTEN'
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN      4498/nginx: worker  
tcp        0      0 0.0.0.0:443             0.0.0.0:*               LISTEN      4498/nginx: worker  
tcp6       0      0 :::80                   :::*                    LISTEN      4498/nginx: worker  
tcp6       0      0 :::443                  :::*                    LISTEN      4498/nginx: worker  
$

答案2

使用netstat -an | grep :80命令检查该端口是否被其他服务使用。

答案3

我最近遇到了这个错误，对我来说，解决方案是 apache 也同时运行。您可以通过以下方式检查

sudo systemctl status apache2

如果它正在运行，此命令将停止它

sudo systemctl stop apache2

这将阻止 apache 运行

sudo systemctl disable apache2

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