SOLVED!
Solved it by adding the line RewriteCond %{REQUEST_URI} !^/utils to the VirtualHost block at /etc/httpd/conf.d/fog.conf so it looks like this now:
<VirtualHost *:80> <FilesMatch "\.php$"> SetHandler "proxy:fcgi://127.0.0.1:9000/" </FilesMatch> ServerName 10.0.0.1 ServerAlias fog.servers.domain.io DocumentRoot /var/www/html/ RewriteEngine On RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK) RewriteRule .* - [F] RewriteRule /management/other/ca.cert.der$ - [L] RewriteCond %{HTTPS} off RewriteCond %{REQUEST_URI} !^/utils RewriteRule (.*) https://%{HTTP_HOST}/$1 [R,L] </VirtualHost>@george1421 hi and once again let me thank you for your time.
I just managed to get over the problem and disabled the HTTPS redirect for the /utils path.
SystemRescue loaded just fine.
I would suggest, maybe, adding this rule by default when we enable SSL on the fog server, and having therefor a specific path to put boot files that could be blocked by curl’s certificate check.