Comment 1 for bug 1849578

It turns out that on every config change on nagios charm,
/etc/apache2/sites-available/default-ssl.conf is completely re-written. interestingly enough thruk does a nice job on it's install to place the /usr/share/thruk/thruk_cookie_auth.include into the VirtualHost files, however this full rewrite in nagios doesn't take into account this inserted line.

I was able to have success without having to change /etc/thruk/thruk_local.conf