Determine if the WildFire Cluster is in a Split-Brain Condition

1. (WildFire appliance CLI only) On a WildFire appliance controller, run:

   admin@WF-500>show cluster membership

   The affected WildFire cluster node displays Cluster:splitbrain next to Service Summary.
   The following example shows a node in a 2-node WildFire cluster in a split-brain condition:

   Service Summary:  Cluster:splitbrain
   Cluster name:     WF_Cluster_1
   Address:          2.2.2.114
   Host name:        wf1
   Node name:        wfpc-009707000380-internal
   Serial number:    009707000380
   Node mode:        controller
   Server role:      True
   HA priority:      secondary
   Last changed:     Tue, 24 Oct 2017 15:13:18 -0700
   Services:         wfcore signature wfpc infra
   Monitor status:
                     Serf Health Status: passing
                         Agent alive and reachable
                     Service 'infra' check: passing
   Application status:
                     global-db-service: ReadyLeader
                     wildfire-apps-service: Ready
                     global-queue-service: ReadyLeader
                     wildfire-management-service: Done
                     siggen-db: ReadyMaster
   Work queue status:
                     sample anaysis queued: 0
                     sample anaysis running: 0
                     sample copy queued: 0
                     sample copy running: 0
   
   Diag report:
                     2.2.2.114: reported leader '2.2.2.114', age 0.
                     2.2.2.114: local node passed sanity check.

2. (Panorama only) On the Panorama appliance that is managing the WildFire cluster:
   1. Select Panorama > Managed WildFire Clusters.
   2. In the Cluster Status column, check for the presence of cluster [splitbrain]. This indicates that the appliance is in split-brain mode.