Comment 1 for bug 1818615

+1 to this.

The standard FCB bundle now has graylog-mongodb deployed in an lxd container on the graylog unit. This didn't used to be the case, which is why this bug has only recently surfaced.

We worked around this by changing the juju config for rest_transport_uri to the "real" primary IP of the graylog unit:

  juju config graylog rest_transport_uri=http://10.1.2.3:9001/api/

Another work-around would be to not put graylog-mongodb in a lxd container on the graylog unit.