after updating os, including php, 500 err on ispconfig

But like @ahrasis wrote, when Sury repo is enabled doing

Code:

apt upgrade

install PHP 8.

 

Agreed that default php will be fixed when you run update-alternatives as this is the same command everybody use. However, my actual point is, on Ondrej Sury repo php update it will, most of the time, change back to latest php (which is currently php8.0) and the only way to avoid manual fix on every update is to monitor default php and automatically restore it whenever it changed again. I noted ISPConfig does not cover this though requires default php, so we are on our own i.e. either fix it manually or use monitoring software and fix it automatically.

 

i believe it's only required to set it once. (at least for ondrej/php repo on ubuntu) as by default the update-alternatives --config php is set as auto, so it will change to the newer php version on update, when set to manual, for a specific php version it should no longer change the default version when there's an update.
unfortunately i don't think it's possible to pre-empt this and set it to manual in advance, as it claims there is no alternative version available, so it seems the default version can only be after an additional php version has been installed.

 

I don't know about other people experiences but I will play safe and keep monitoring default php on my servers since I already am monitoring other things as well.