Clamscan will not shut down

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Nextcloud version (eg, 20.0.5): 27.1.3
Operating system and version (eg, Ubuntu 20.04): Ubuntu 20.04
Apache or nginx version (eg, Apache 2.4.25): Apache
PHP version (eg, 7.4): 8.1.2

The issue you are facing:
Clamscan is maxing out my processors on Nextcloud server. I turned off the Antivirus app in Nextcloud but that didn’t affect it. I turned the app back on, but now it is running a second instance of clamscan. Not sure how I can disable it from running or if there is a way to control it better.

You could simply uninstall clamav:

sudo apt-get remove *clamav* clamdscan

or if you prefer to keep it on your server, you can stop the services running on your server:

sudo systemctl stop clamav-daemon clamav-freshclam

… this will stop the services but they will be started after next reboot. You can disable the services so that they do not start automatically:

sudo systemctl disable clamav-daemon clamav-freshclam

If you later at one point want to reenable the clamav services:

sudo systemctl enable clamav-daemon clamav-freshclam

Much luck,

Thanks I just needed to do the shut down for now but this helped me do that.

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