All my site are now showing 502 Bad Gateway nginx/1.20.2

Since à few sans, all my sites hosted on my cwp are shoping 502 Bad Gateway nginx/1.20.2.

Tried all classic stuff
- checked and fixer wordpress défaut rights
- rebuild webserver nginx

Please anyone have any hint?

+1  me too

Did you manage to solve it?

Need to see some error logs to nail it down...

I do have had this problem and believe it is related to the .sock file missing for the user.

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2023/04/11 06:59:29 [crit] 5018#5018: *113 connect() to unix:/opt/alt/php-fpm80/usr/var/sockets/whocalau.sock failed (13: Permission denied) while connecting to upstream, client: 103.154.154.179, server: whocalled.au, request: "GET /wp-admin/plugin-install.php?s=w3%2520total&tab=search&type=term HTTP/1.1", upstream: "fastcgi://unix:/opt/alt/php-fpm80/usr/var/sockets/whocalau.sock:", host: "whocalled.au", referrer: "https://whocalled.au/wp-admin/plugins.php"

I rectified it temporarily by modifying my website .conf file to change the socket file to nobody.sock but it just means I lose some functionality in the backend of the Wordpress site, like not being able to install plugins directly and getting some permissions errors.

This is NOT a permanent fix. I would love to have a better solution.

When compiling new php-fpm versions, you don't automatically get a user.conf file created (and therefore a user.sock file). You should copy over your existing user.conf from the previous PHP version, change the paths therein appropriately for that PHP version, and restart that version of php-fpm. Also, I see you are using php 8.0. Any specific reason you are not using 8.1 instead? If not, I would recommend compiling 8.1 and using that instead of 8.0.

When compiling new php-fpm versions, you don't automatically get a user.conf file created (and therefore a user.sock file). You should copy over your existing user.conf from the previous PHP version, change the paths therein appropriately for that PHP version, and restart that version of php-fpm.

But I don't have an existing sock file to copy from unless I missing something? Where should I be looking for an existing one?

restart that version of php-fpm.

How do you do this? I've tried multiple commands and Google's with 0 success.

Also, I see you are using php 8.0. Any specific reason you are not using 8.1 instead? If not, I would recommend compiling 8.1 and using that instead of 8.0.

Just what I have started off with and some of my WordPress plugins are not compatible with 8.1 yet.

Here's an example for moving from php-fpm 7.4 to 8.0:

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cp /opt/alt/php-fpm74/usr/etc/php-fpm.d/users/user.conf /opt/alt/php-fpm81/usr/etc/php-fpm.d/users/user.confThen edit the file (either manually or with a perl or sed substitution) to update it from 7.4 to 8.0:

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perl -pi -e 's/php-fpm74/php-fpm80/g' /opt/alt/php-fpm81/usr/etc/php-fpm.d/users/user.confThen restart php 8.0

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systemctl restart php-fpm80.serviceand confirm it made your .sock file:

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ls -l /opt/alt/php-fpm80/usr/var/sockets/yellowdeli.sockIf it's present, then restart nginx.