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I am running Plesk 18.0.44 on my Debian 9.13 server. It has multiple subscriptions and hence different users for these vhosts. I was always able to run /opt/plesk/php/7.4/bin/php -v as a vhost user (or rather some PHP commands for the applications hosted there, but php -v suffices for explaining purposes). Recently, this has stopped working with the following error message:

-su: /opt/plesk/php/7.4/bin/php: Permission denied

I don't understand that since I don't remember having changed anything about the permissions or running Plesk updates or similar. I tried adding the vhosts user group (user laravelapp in group psacln) to the php executable's permissions, so they look like this:

ls /opt/plesk/php/7.4/bin/php -al
-rwxrwxrwx 1 root psacln 5629184 Jun 16  2022 /opt/plesk/php/7.4/bin/php

I even tried setting the permissions to 777 but I just can't get it to work again. It works completely fine - as expected - when running it from root user.

What could be the possible causes for this issue and how could I troubleshoot this further?

Johnny
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  • Questions utilizing web management panels like Plesk are off topic; Debian 9 is end of life, also off topic. – Gerald Schneider May 24 '23 at 06:56
  • In how far does that affect permission issues? @GeraldSchneider – Johnny May 24 '23 at 07:35
  • Check all the parent folders. Also web panels are off-topic precisely because they mangle most of the system beyond recognition, including file permissions. – Ginnungagap May 27 '23 at 07:38
  • @Ginnungagap by parent folders you probably refer to `/opt/plesk/php/7.4`, correct? good point, I missed this one. – Johnny May 27 '23 at 08:15

1 Answers1

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I overlooked the permissions of the parent folders of the PHP executable as @Ginnungagap pointed out.

chmod 755 /opt/plesk/php

It works. I am still unsure as to why it happened in the first place.

Johnny
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