At the time the problem happened, there is this in the regiond logs:
2015-05-22 01:01:21 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-5b9f-4701-8366-eeda2c09d14e)
2015-05-22 01:01:21 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-5b9f-4701-8366-eeda2c09d14e)
2015-05-22 01:01:21 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-5b9f-4701-8366-eeda2c09d14e)
2015-05-22 01:01:21 [-] 127.0.0.1 - - [22/May/2015:01:01:20 +0000] "POST /MAAS/api/1.0/nodes/node-95167f62-12b6-11e4-9a15-00163eca07b6/?op=start HTTP/1.1" 400 230 "-" "Go 1.1 package http"
2015-05-22 01:01:22 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-5b9f-4701-8366-eeda2c09d14e)
2015-05-22 01:01:22 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-5b9f-4701-8366-eeda2c09d14e)
2015-05-22 01:01:22 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-5b9f-4701-8366-eeda2c09d14e)
2015-05-22 01:01:22 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-5b9f-4701-8366-eeda2c09d14e)
At the time the problem happened, there is this in the regiond logs: 5b9f-4701- 8366-eeda2c09d1 4e) 5b9f-4701- 8366-eeda2c09d1 4e) 5b9f-4701- 8366-eeda2c09d1 4e) 2015:01: 01:20 +0000] "POST /MAAS/api/ 1.0/nodes/ node-95167f62- 12b6-11e4- 9a15-00163eca07 b6/?op= start HTTP/1.1" 400 230 "-" "Go 1.1 package http" 5b9f-4701- 8366-eeda2c09d1 4e) 5b9f-4701- 8366-eeda2c09d1 4e) 5b9f-4701- 8366-eeda2c09d1 4e) 5b9f-4701- 8366-eeda2c09d1 4e)
2015-05-22 01:01:21 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-
2015-05-22 01:01:21 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-
2015-05-22 01:01:21 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-
2015-05-22 01:01:21 [-] 127.0.0.1 - - [22/May/
2015-05-22 01:01:22 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-
2015-05-22 01:01:22 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-
2015-05-22 01:01:22 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-
2015-05-22 01:01:22 [maasserver] ERROR: Unable to get RPC connection for cluster 'OIL Cluster' (037c960b-