WAN failover review and log question

Hi folks,

We had an outage today on our primary link and failover didn't work as expected. The load-balance watchdog shows:

Group WAN_FAILOVER
  eth0.10
  status: Running 
  pings: 6276
  fails: 7
  run fails: 0/3
  route drops: 1
  ping gateway: 8.8.8.8 - REACHABLE
  last route drop   : Tue Nov 22 19:25:09 2016
  last route recover: Tue Nov 22 19:25:30 2016

  pppoe1
  status: Running 
  failover-only mode
  pings: 16533
  fails: 0
  run fails: 0/3
  route drops: 0
  ping gateway: 8.8.8.8 - REACHABLE

The failure was a complete outage that occurred at 09:35 and lasted 20 mins, so clearly it hasn't picked it up.

I have 2 questions:

1. Where can I see the logs for the watchdog service? I looked at /var/log/messages and couldn't find anything in that file that looked right
2. Can someone please check the configuration below, specifically should we be using the ethX (eth0, etc.) interfaces or the VLAN's (eth0.10, etc.)?

load-balance {
    group WAN_FAILOVER {
        interface eth0.10 {
            route-test {
                count {
                    failure 3
                    success 3
                }
                type {
                    ping {
                        target 8.8.8.8
                    }
                }
            }
        }
        interface pppoe1 {
            failover-only
            route-test {
                count {
                    failure 3
                    success 3
                }
                type {
                    ping {
                        target 8.8.8.8
                    }
                }
            }
        }
        lb-local disable
        sticky {
            dest-addr enable
            dest-port enable
            source-addr enable
        }
    }
}