Is there any solution for the failed to start a high performance web server and a reverse proxy server error?

Question

I get an error

root@zabbix:/home/appliance# systemctl status nginx.service
 
 nginx.service - A high performance web server and a reverse proxy server
  Loaded: loaded (/lib/systemd/system/nginx.service; enabled; vendor preset: enabled)
  Active: failed (Result: exit-code) since Wed 2018-07-25 18:33:26 UTC; 1min 27s ago
  Process: 30040 ExecStart=/usr/sbin/nginx -g daemon on; master_process on; (code=exited, status=1/FAILURE)
  Process: 30037 ExecStartPre=/usr/sbin/nginx -t -q -g daemon on; master_process on; (code=exited, status=0/SUCCESS)
 
 Jul 25 18:33:25 zabbix nginx[30040]: nginx: [emerg] listen() to [::]:80, backlog 511 failed (98: Address already in use)
 Jul 25 18:33:25 zabbix nginx[30040]: nginx: [emerg] listen() to 0.0.0.0:80, backlog 511 failed (98: Address already in use)
 Jul 25 18:33:25 zabbix nginx[30040]: nginx: [emerg] listen() to [::]:80, backlog 511 failed (98: Address already in use)
 Jul 25 18:33:26 zabbix nginx[30040]: nginx: [emerg] listen() to 0.0.0.0:80, backlog 511 failed (98: Address already in use)
 Jul 25 18:33:26 zabbix nginx[30040]: nginx: [emerg] listen() to [::]:80, backlog 511 failed (98: Address already in use)
 Jul 25 18:33:26 zabbix nginx[30040]: nginx: [emerg] still could not bind()
 Jul 25 18:33:26 zabbix systemd[1]: nginx.service: Control process exited, code=exited status=1
 
 Jul 25 18:33:26 zabbix systemd[1]: *******Failed to start A high performance web server*** and a reverse proxy server.****
 
 Jul 25 18:33:26 zabbix systemd[1]: nginx.service: Unit entered failed state.
 Jul 25 18:33:26 zabbix systemd[1]: nginx.service: Failed with result 'exit-code'.

when trying to start nginx.service. How to fix the failed to start a high performance web server and a reverse proxy server. error? Please give me some advice.

hdtutoria · Accepted Answer

The cause: There could be a problem with the configuration file. The solution: To discover any issues in the configuration file, use the nginx -t -c /etc/nginx/nginx.conf command. If the bugs are fixed, restart nginx with sudo service nginx restart. It'll work out.

Emma Germain · Answer

A process is already bound to the HTTP Port . (Especially after upgrading systems!) It will automatically start apache2 by default

This is the first time you try it:

sudo service apache2 stop

To resolve the problem, run the sudo lsof -i:80 command to see a list all processes that use port 80. Next, disable server.

Stop the process that uses the port 80

sudo fuser -k 80/tcp

It could be a problem in the configuration file.

To find any missing configuration, you can use nginx -t -c /etc/nginx/nginx.conf command

This error can sometimes be caused by Nginx sites that are already running on port 80. If you don't have one, it is possible to remove default config.

sudo rm /etc/nginx/sites-enabled/default
sudo service nginx restart

Noelle Davies · Answer

There could be an issue in the configuration file. To find bugs in your configuration file, you can use the nginx -t -c /etc/nginx/nginx.confcommand. Run sudo service nginx restart again if you have found the bugs. It should work.

Please refer to

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Is there any solution for the failed to start a high performance web server and a reverse proxy server error?