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Question

My site accidentally down and shows error in apache/error_log file like this "AH00169: caught SIGTERM, shutting down".

And I’m trying restart apache show error. And checking the apache status shows like this:

Aug 17 06:43:41 DIB-Web-Dev-Server systemd[1]: Starting The Apache HTTP Server...
Aug 17 06:43:41 DIB-Web-Dev-Server apachectl[29649]: apache2: Syntax error on line 226 of /etc/apache2/apache2.conf: Could not open configuration file
Aug 17 06:43:41 DIB-Web-Dev-Server apachectl[29649]: Action 'start' failed.
Aug 17 06:43:41 DIB-Web-Dev-Server apachectl[29649]: The Apache error log may have more information.
Aug 17 06:43:41 DIB-Web-Dev-Server systemd[1]: apache2.service: Control process exited, code=exited status=1
Aug 17 06:43:41 DIB-Web-Dev-Server systemd[1]: apache2.service: Failed with result 'exit-code'.
Aug 17 06:43:41 DIB-Web-Dev-Server systemd[1]: Failed to start The Apache HTTP Server.

I can’t find the issue. Please help me. Earlier it was working for me.

Answer 1

bobbyiliev August 17, 2020

Hi there @alanj,

As far as I can see from the output that you’ve shared, it looks like that the problem is on line 226 in /etc/apache2/apache2.conf.

I would recommend checking the /etc/apache2/apache2.conf file on line 226 for more information.

Feel free to share the line here as well so I could try to further advise you!

Regards,
Bobby

Reply Report

alanj August 17, 2020

Hi @bobbyiliev thanks for the reply.

Include /etc/phpmyadmin/apache.conf //this is line 226

But earlier phpmyadmin was uninstalled.But that time also working fine for me.
Reply Report
- bobbyiliev August 17, 2020
  
  Hi there @alanj,
  
  Ah I see, yes this would explain the problem then.
  
  You need to either delete that line or comment it out by adding a # sign at the beginning of the line.
  
  Then run another config test:
  
  sudo apachectl -t
  
  And if you get Syntax OK restart Apache:
  
  sudo systemctl restart apache2
  
  Let me know how it goes!
  Regards,
  Bobby
  
  Reply Report
  
  alanj August 17, 2020
  
  Thanks for the valid information.Now that error is solved and Apache restarted.And when I try to reload the page shows like this:
  
  This page isn’t working 68.183.35.129 is currently unable to handle this request.
  HTTP ERROR 500
  
  Reply Report
  
  bobbyiliev August 17, 2020
  
  Hi @alanj,
  
  That is good news, happy to hear that your Apache is running again.
  
  Regarding the 500 error please check your error log for more information rather than the generic 500 error:
  
  sudo tail -100 /var/log/apache2/error_log
  
  Also, I would recommend going through this answer here on how to troubleshoot common Apache problems:
  
  https://www.digitalocean.com/community/questions/how-to-troubleshoot-common-apache-issues-on-linux-server
  
  Let me know how it goes!
  Regards,
  Bobby
  
  Reply Report
  
  alanj August 17, 2020
  
  Hi @bobbyiliev Running any command shows “Cannot allocate memory”.I think its a memory issue related to droplet.Right?
  
  Reply Report
  
  bobbyiliev August 17, 2020
  
  Hi there @alanj,
  
  It means that your Apache service or PHP is trying to use more RAM that you actually have.
  
  You would need to reduce your PHP memory limit a little bit so that it does not exceed your available RAM on the Droplet.
  
  Regards,
  Bobby
  
  Reply Report
  
  alanj August 17, 2020
  
  Currently showing memory_limit 1500M in running phpinfo.php.How much I need to reduce.
  
  Reply Report
  
  bobbyiliev August 17, 2020
  
  Hi there @alanj,
  
  I could suggest first checking how much memory you have on your Droplet:
  
  free -m
  
  If you for example have 1GB of RAM, then I would recommend setting your PHP memory limit to 128MB.
  
  Note that you need to restart Apache after making your change.
  
  Let me know how it goes!
  Regards,
  Bobby
  
  Reply Report

Answer 2

alanj August 17, 2020

Hi @bobbyiliev thanks for the reply.

Include /etc/phpmyadmin/apache.conf //this is line 226

But earlier phpmyadmin was uninstalled.But that time also working fine for me.
Reply Report
- bobbyiliev August 17, 2020
  
  Hi there @alanj,
  
  Ah I see, yes this would explain the problem then.
  
  You need to either delete that line or comment it out by adding a # sign at the beginning of the line.
  
  Then run another config test:
  
  sudo apachectl -t
  
  And if you get Syntax OK restart Apache:
  
  sudo systemctl restart apache2
  
  Let me know how it goes!
  Regards,
  Bobby
  
  Reply Report
  
  alanj August 17, 2020
  
  Thanks for the valid information.Now that error is solved and Apache restarted.And when I try to reload the page shows like this:
  
  This page isn’t working 68.183.35.129 is currently unable to handle this request.
  HTTP ERROR 500
  
  Reply Report
  
  bobbyiliev August 17, 2020
  
  Hi @alanj,
  
  That is good news, happy to hear that your Apache is running again.
  
  Regarding the 500 error please check your error log for more information rather than the generic 500 error:
  
  sudo tail -100 /var/log/apache2/error_log
  
  Also, I would recommend going through this answer here on how to troubleshoot common Apache problems:
  
  https://www.digitalocean.com/community/questions/how-to-troubleshoot-common-apache-issues-on-linux-server
  
  Let me know how it goes!
  Regards,
  Bobby
  
  Reply Report
  
  alanj August 17, 2020
  
  Hi @bobbyiliev Running any command shows “Cannot allocate memory”.I think its a memory issue related to droplet.Right?
  
  Reply Report
  
  bobbyiliev August 17, 2020
  
  Hi there @alanj,
  
  It means that your Apache service or PHP is trying to use more RAM that you actually have.
  
  You would need to reduce your PHP memory limit a little bit so that it does not exceed your available RAM on the Droplet.
  
  Regards,
  Bobby
  
  Reply Report
  
  alanj August 17, 2020
  
  Currently showing memory_limit 1500M in running phpinfo.php.How much I need to reduce.
  
  Reply Report
  
  bobbyiliev August 17, 2020
  
  Hi there @alanj,
  
  I could suggest first checking how much memory you have on your Droplet:
  
  free -m
  
  If you for example have 1GB of RAM, then I would recommend setting your PHP memory limit to 128MB.
  
  Note that you need to restart Apache after making your change.
  
  Let me know how it goes!
  Regards,
  Bobby
  
  Reply Report

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