The outage in ticket#3252 was difficult to track down due to lack of logs and error checking.

Some things to do here:

Add to /usr/share/mirrormanager/server/generate-publiclist:

bandwidth = 0
for h in hosts:
    if type(h.bandwidth_int) is not type(3):
             h.bandwidth_int = 0
             print h
    bandwidth = bandwidth + h.bandwidth_int
bandwidth = bandwidth / 1024 # convert to Gb

We were hitting a case where h.bandwidth was null and it was messing up the updates.

Also, metalinks were returning simply:

Bad request, but the entire string was:

Bad Request unsupported operand type(s) for +=: 'int' and 'NoneType'

which might have told us more.