Understanding PHP Memory Limit

[Stegan]

SYSTEM INFORMATION
OS type and version	Ubuntu Linux 22.04.3
Webmin version	2.105
Usermin version	2.005
Virtualmin version	7.8.2
Theme version	21.09.5
Package updates	All installed packages are up to date

I have been asked to setup an app on a client’s webserver.

The app is (by all info I have a pretty straightforward PHP one → LimeSurvey

The VS has been setup with a large enough chunk of memory (Quota)

The download and install seemed to work as expected yet the precheck fails on several points.

Now why does it say Too Low: 64MB when the Quota is set as 5GiB ?

And it is complaining about these PHP Modules not being installed.

[jimr1]

Did you set the php memory (ram) instance size ? For my cli php apps I tend to give it more than 64mb . Try setting this to 128mb or 240mb and of course install the modules the app needs . Btw what modules are missing ?

[Stegan]

Thanks for the response.
No I did not set specific php memory (just left as is) so no idea where?

I think I may have found this in Webmin -> PHP Configuration -> /etc/php/8.1/fpm/php.ini and set it to 240M, but that didn’t seem to alter anything on the precheck

As for the PHP modules: they are

• PHP GD library
• PHP LDAP library
• PHP imap library

[jimr1]

You did restart fpm ? If not restart it. The missing modules are really useful in a php environment but are not installed by virtualmin by default, but there is nothing nasty there

[stefan1959]

you can set per Virtual Server here

For the libraries try
apt-get install php8.1-{gd,ldap,imap}

[Stegan]

@jimr1

You did restart fpm ? If not restart it.

Oops! silly me! Done now and install passes that memory check.

@stefan1959

For the libraries try
apt-get install php8.1-{gd,ldap,imap}

@stefan1959 Thanks that fixed the rest. ticks all round now

[Joe]

I’ve re-titled your post, as the problem is unrelated to quotas. (Just to enable future searches by others with similar problems, not trying to be pedantic.)