Removal of /etc/apache2/sites-available/aodh-api.conf causes dpkg postinst to fail

[Christian Rohmann]

On Ubuntu 22.04 LTS (Jammy) the aodh-api package contains a default config for the apache vhost at /etc/apache2/sites-available/aodh-api.conf (see https://packages.ubuntu.com/jammy-updates/all/aodh-api/filelist).

This file is then referenced in the /var/lib/dpkg/info/aodh-api.postinst script which tries to enable this vhost via:

a2ensite -m -q aodh-api.conf

This fails as the Puppet code actively removes the file /etc/apache2/sites-available/aodh-api.conf altogether.

I suggest to simply empty the file as that allows the package and postinst script to work without errors, but still "removes" the vhost.

[Takashi Kajinami (kajinamit)]

In the past We resolved this "problem" in puppet-keystone by leaving a dummy file. However IMHO this is a bug in ubuntu/debian package and they should consider the case where the file can be removed. They insisted they won't change their script in the past but I don't understand what is the actual technical blocker rather than they don't want to be bothered to get the debian helper fixed.

https://bugs.launchpad.net/ubuntu/+source/keystone/+bug/1737697

Note that puppetlabs-apache by default purge all vhost config files. The current behavior is aligned with it.