Comment 6 for bug 1582463

I have come across a similar phenomenon. I've added nrpe subordinates to a number of applications. On most applications this worked fine, except for a rabbitmq-server unit where nrpe subord got stuck in

waiting allocating x.x.x.x installing agent

I tried to remove the nrpe application subsequently. The subordinates for other units are gone; the stuck subordinate is still present though.

Full status

  nrpe-lxd:
    charm: local:xenial/nrpe-0
    series: xenial
    os: ubuntu
    charm-origin: local
    charm-name: nrpe
    charm-rev: 0
    exposed: false
    life: dying
    application-status:
      current: waiting
      message: installing agent

There are no agents in error state. The containers' machine log has no errors either.

Version
juju-2.0 1:2.1.3-0ubuntu1~16.04.1~juju1

Please shout if there's any logs you need