Please attach an sos report on the failed node and confirm what firewalling (if any) is in place, and what proxy configuration (if any) is in place.
The telltale error from the logs is
request to http://127.0.0.1:5240/MAAS/metadata/2012-03-01/ failed. sleeping 1.: HTTP Error 502: cannotconnect
Can you confirm if that URL is accessible from the region controller in question?
Please attach an sos report on the failed node and confirm what firewalling (if any) is in place, and what proxy configuration (if any) is in place.
The telltale error from the logs is
request to http:// 127.0.0. 1:5240/ MAAS/metadata/ 2012-03- 01/ failed. sleeping 1.: HTTP Error 502: cannotconnect
Can you confirm if that URL is accessible from the region controller in question?