MetaCPAN is having issues (This is a 503 response).

We are tracking this https://github.com/metacpan/metacpan-k8s/issues/154

You can see our Public dashboard if that is of interest.

As a volunteer run service we are trying our best to find time to investigate further and add mitigations where we can.

Please wait 10 mins or so and try again as the outages seem to be mostly in bursts.