504 Gateway Timeout. Bitnami Wordpress, Lightsail, PHP Workers issue

kirankolli 2019-11-06 09:31:27 UTC #1

The users in the front end are getting 504 Gateway Timeout error.
I see the below errors in the php_fpm log. I tried to change the settings but it still doesn't work.

[06-Nov-2019 06:03:50] WARNING: [pool wordpress] seems busy (you may need to increase pm.st
art_servers, or pm.min/max_spare_servers), spawning 32 children, there are 0 idle, and 24 t
otal children
[06-Nov-2019 06:03:51] WARNING: [pool wordpress] server reached pm.max_children setting (25
), consider raising it
[06-Nov-2019 06:06:05] WARNING: [pool wordpress] server reached pm.max_children setting (25
), consider raising it

Bitnami Support Tool id: c0dc533d-cddd-897a-0ea8-bf3604830219

AWS Lightsail, Bitnami Wordpress - Website is down

kirankolli 2019-11-06 09:27:25 UTC #2

@shishir.insane
I have the same issue and I see errors in php_fpm log. Do you see the same? I have changed the settings and it still doesn't work

@jota Could your team help us look into this?

shishir.insane 2019-11-06 10:22:21 UTC #3

Thanks for the topic organization. It would be really helpful if you provide a path for the resolution.

Thanks,
Shishir.

kirankolli 2019-11-06 11:04:23 UTC #4

This error log is after upgrading the server to 4Gb RAM. Before that it was 512MB RAM

gongomgra 2019-11-06 13:17:42 UTC #5

Hi @kirankolli,

I see in your Apache error log the next messages

[Tue Nov 05 08:12:02.825342 2019] [proxy_fcgi:error] [pid 29541:tid 140415281780480] [client 52.8.215.203:33162] AH01071: Got error 'PHP message: PHP Fatal error:  Uncaught Error: Call to undefined function get_header() in /opt/bitnami/apps/wordpress/htdocs/wp-content/themes/Divi/index.php:1\nStack trace:\n#0 {main}\n  thrown in /opt/bitnami/apps/wordpress/htdocs/wp-content/themes/Divi/index.php on line 1\n'
[Tue Nov 05 14:59:29.873327 2019] [proxy_fcgi:error] [pid 30499:tid 140415063570176] (70007)The timeout specified has expired: [client 203.133.170.221:32922] AH01075: Error dispatching request to : (polling)

It looks like one of your themes had an error and some hours later your connection between Apache and PHP-FPM stopped working or it took too long. Can you ensure that PHP-FPM is running? Can you check the error with the theme? I have not being able to reproduce your issue in a fresh new Bitnami WordPress instance.

sudo /opt/bitnami/ctlscript.sh status

If you find that any process is not running, start them with

sudo /opt/bitnami/ctlscript.sh start

Regards,
Gonzalo

jota 2019-11-07 07:45:35 UTC #6

Hi @kirankolli,

This other user has a similar issue and he said that renaming the themes folder worked for him (he could access the admin dashboard), can you try to do the same?

https://community.bitnami.com/t/website-doesnt-load-gateway-timeout-504-again/71631/3?u=jota

sudo mv /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins.bck
sudo mv /opt/bitnami/apps/wordpress/htdocs/wp-content/themes /opt/bitnami/apps/wordpress/htdocs/wp-content/themes.bck
sudo /opt/bitnami/ctlscript.sh restart

Can you check if that works for you?

Thanks

jota 2019-11-07 08:38:39 UTC #7

Hi @kirankolli,

This other user provided a different solution

https://community.bitnami.com/t/error-502-bad-gateway/71614/6?u=jota

Can you confirm you have those requests to code.php in the access.log file?

sudo cat /opt/bitnami/apache2/logs/access_log | grep code.php

If that's the case, can you check if the file exists

sudo ls -la /opt/bitnami/apps/wordpress/htdocs/code.php

and create it in the WordPress' directory if it doesn't exist?

sudo mv /opt/bitnami/apps/wordpress/htdocs/code.php /opt/bitnami/apps/wordpress/htdocs/code.php.back
sudo touch /opt/bitnami/apps/wordpress/htdocs/code.php
sudo chown bitnami:daemon /opt/bitnami/apps/wordpress/htdocs/code.php
sudo chmod g+w /opt/bitnami/apps/wordpress/htdocs/code.php

Thanks

moochdt003 2019-11-07 10:05:26 UTC #8

So this actually working. Adding the code.php file in the wordpress/htdocs/ folder. But you need to restart apache afterwards for it to take effect.

Is this a WordPress bug? I find it strange because I don't allow auto-updates for WP or Plugins so how did this suddenly stop my site from working? I went as far as recreating the site from my repository and experienced same issue.

I have quite a number of WP websites on lightsail and they have not been affected yet. Just trying to figure out how we avoid this in future. If you have any more information.

Unable to access the website using GCP + Bitnami + Wordpress

jota 2019-11-07 10:26:40 UTC #9

Hi @moochdt003,

As far as I know, WordPress has enabled the security updates by default. Maybe there was a "fake" security update that broke the installations.

I think the issue might be related to this one

https://wordpress.org/support/topic/get-code-php-http-1-0/

Can you ask the WordPress' developers to know more about it?

jota 2019-11-11 07:46:22 UTC #10

Hi again,

It seems that malicious code may have been included in your site via "nulled" themes and plugins in WordPress. We published a security notice in our documentation to let the users know about it.

https://docs.bitnami.com/general/security/security-2019-11-08/

I suggest you follow the WordPress' security practices to keep your site secure and up-to-date. If you have any questions, do not hesitate to ask.

Regards

kirankolli 2019-11-11 14:40:39 UTC #11

Thanks @jota for all your help and forwarding the articles to me. It looks like it's the malware attack as pointed out in the articles. I clean up the code and now monitoring the website.

I did not create the file code.php, I just removed the malware code from functions.php.

May be I should create code.php also as a fallback?

Best,
Kiran

jota 2019-11-12 09:52:21 UTC #12

Hi @kirankolli,

The malware was trying to execute code in your site and that's why your site went down (it created many requests). I do not think you need to create the code.php file because it's not included in the WordPress' core files.

I'm glad to hear that your site is working correctly now

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