多个服务可以在同一个端口上侦听。 这个问题通常来自于在同一台机器上混合使用Apache和NGINX。

检查:

Sudo netstat -plant | grep 80

停止Apache并重启NGINX:

Sudo systemctl stop apache2 && Sudo systemctl restart nginx && Sudo systemctl status nginx

我在AWS光帆上有这个错误，使用上面的顶部答案

from

listen [::]:80;

to

listen [::]:80 ipv6only=on default_server;

然后在我的AWS帐户中点击“重启”按钮，我有主服务器Apache和Nginx作为代理。

我用nginx运行Varnish服务器。我的varnish服务器运行在端口80上，因此，我的nginx服务器没有启动。我在所有nginx配置文件中将端口更改为8088，但我的default.conf文件在/etc/nginx/conf中。d目录下的Ubuntu服务器。

由于我的conf.d目录包含在主/etc/nginx.conf文件中，nginx没有启动。

将“/etc/nginx/conf.d/default.conf”重命名为“/etc/nginx/conf.d/default.conf”。/etc/nginx/conf.d/*.conf;从我的nginx.conf文件。

问题——我有这个问题。基本上，我所做的就是用正常的nginx命令启动nginx，然后尝试用service nginx reload / restart重新启动nginx，然后我得到这个错误

解决方案-使用nginx -s stop停止nginx，然后重新启动nginx服务器使用服务nginx重启问题解决。

我在letsencrypt (certbot)和nginx中遇到了同样的问题，

裁判:https://github.com/certbot/certbot/issues/5486

此错误还没有解决方案

因此，a更改了一个cron为renew(在renew后重新加载)(使用certbot的建议)

-- in /etc/cron.d/certbot
from
0 */12 * * * root test -x /usr/bin/certbot -a \! -d /run/systemd/system && perl -e 'sleep int(rand(3600))' && certbot -q renew 
to
0 */12 * * * root test -x /usr/bin/certbot -a \! -d /run/systemd/system && perl -e 'sleep int(rand(3600))' && certbot -q renew --pre-hook "service nginx stop" --post-hook "service nginx start"

日志(短):

-- in /var/log/syslog
Jun 10 00:14:25 localhost systemd[1]: Starting Certbot...
Jun 10 00:14:38 localhost certbot[22222]: nginx: [error] open() "/run/nginx.pid$
Jun 10 00:14:41 localhost certbot[22222]: Hook command "nginx" returned error c$
Jun 10 00:14:41 localhost certbot[22222]: Error output from nginx:
Jun 10 00:14:41 localhost certbot[22222]: nginx: [emerg] bind() to 0.0.0.0:443 $
Jun 10 00:14:41 localhost certbot[22222]: nginx: [emerg] bind() to 0.0.0.0:80 f$
Jun 10 00:14:41 localhost certbot[22222]: nginx: [emerg] bind() to 0.0.0.0:443 $
Jun 10 00:14:41 localhost certbot[22222]: nginx: [emerg] bind() to 0.0.0.0:80 f$
Jun 10 00:14:41 localhost certbot[22222]: nginx: [emerg] bind() to 0.0.0.0:443 $
Jun 10 00:14:41 localhost certbot[22222]: nginx: [emerg] bind() to 0.0.0.0:80 f$
Jun 10 00:14:41 localhost certbot[22222]: nginx: [emerg] bind() to 0.0.0.0:443 $
Jun 10 00:14:41 localhost certbot[22222]: nginx: [emerg] bind() to 0.0.0.0:80 f$
Jun 10 00:14:41 localhost certbot[22222]: nginx: [emerg] bind() to 0.0.0.0:443 $
Jun 10 00:14:41 localhost certbot[22222]: nginx: [emerg] bind() to 0.0.0.0:80 f$
Jun 10 00:14:41 localhost certbot[22222]: nginx: [emerg] still could not bind()
Jun 10 00:14:41 localhost systemd[1]: Started Certbot.


-- in /var/log/nginx/error.log
2018/06/10 00:14:27 [notice] 22233#22233: signal process started
2018/06/10 00:14:31 [notice] 22237#22237: signal process started
2018/06/10 00:14:33 [notice] 22240#22240: signal process started
2018/06/10 00:14:34 [notice] 22245#22245: signal process started
2018/06/10 00:14:38 [notice] 22255#22255: signal process started
2018/06/10 00:14:38 [error] 22255#22255: open() "/run/nginx.pid" failed (2: No $
2018/06/10 00:14:39 [emerg] 22261#22261: bind() to 0.0.0.0:443 failed (98: Addr$
2018/06/10 00:14:39 [emerg] 22261#22261: bind() to 0.0.0.0:80 failed (98: Addre$
2018/06/10 00:14:39 [emerg] 22261#22261: bind() to 0.0.0.0:443 failed (98: Addr$
2018/06/10 00:14:39 [emerg] 22261#22261: bind() to 0.0.0.0:80 failed (98: Addre$
2018/06/10 00:14:39 [emerg] 22261#22261: bind() to 0.0.0.0:443 failed (98: Addr$
2018/06/10 00:14:39 [emerg] 22261#22261: bind() to 0.0.0.0:80 failed (98: Addre$
2018/06/10 00:14:39 [emerg] 22261#22261: bind() to 0.0.0.0:443 failed (98: Addr$
2018/06/10 00:14:39 [emerg] 22261#22261: bind() to 0.0.0.0:80 failed (98: Addre$
2018/06/10 00:14:39 [emerg] 22261#22261: bind() to 0.0.0.0:443 failed (98: Addr$
2018/06/10 00:14:39 [emerg] 22261#22261: bind() to 0.0.0.0:80 failed (98: Addre$
2018/06/10 00:14:39 [emerg] 22261#22261: still could not bind()

对我来说，问题是我在用Supervisor和Systemd运行一个应用程序。在应用程序与Supervisor运行时，我有一个配置文件来处理Nginx。我停止了这个过程，重新启动了监督者。

现在Nginx由Systemd推出，我不再有这个问题了。