I think the Salt key format slightly changed:

• https://github.com/saltstack/salt/issues/52289
• https://github.com/saltstack/salt/issues/66126

Hi,

I upgraded Salt to version 3006.23 across all machines.

After the upgrade, test.ping no longer worked. I regenerated the Salt keys for all client machines and communication started working again. However, I later realized that I had also killed the Salt processes on complector and started the services again, so it is possible that restarting Salt on all client machines was enough and that regenerating the keys was not actually required.

That said, regenerating the key was necessary for windriver, as its key was in a denied state, likely due to a compatibility issue between Salt 3006.8 and 3006.23.