We are using Suse SLES 12 images on Azure in our deployments, out of the East US region. The images are of Suse SLES 12, no service pack, created from official Suse images.
In the last few weeks we keep running into problems with packages updates or checking.
We'd run zypper to search or check the status of a package, zypper would fail to access some repository (usually 'Valid metadata not found at specified URL').
Annoyingly, it also delete all repositories from /etc/zypp/repos.d after such failures. Forcing us to re-register the vm (using /usr/sbin/registercloudguest).
It happened again yesterday, and continues today.
Any idea to the cause? how to mitigate it?