Failed Deploy 'mongodb' service, failed: not running with --replSet, hook "replica-set-relation-changed" failed

This occurs on Xenial (and perhaps earlier) because the charm takes the simple approach of replacing the string "--" with "-- --replSet $set" to add the replSet option in. Unfortunately in Xenial, this is no longer sufficient - it changes the options to numactl, which doesn't know anything about this option, and doesn't pass it down to mongodb.

So it appears that the mongodb charm will either set the master = True or slave = True in /etc/mongodb.conf file. Starting with mongodb 2.6, this commit (https://github.com/mongodb/mongo/commit/f9841e0136d9f7a667662581cda9ce9ddfbf20d8) makes the master or slave option incompatible with the replication.replSet option.

This bug is also affecting me. (xenial, systemd)

I notice the sytemd unit file is not populated with any data/config pertaining to replicasets etc.

This is being fixed in trusty, and will work in xenial too. The --replSet is removed from the upstart script and put into the mongod.conf (where it belongs).

This appears to also error on replica-set-relation-broken. For some reason this hook is run even if the charm was never part of a replica-set, when removing the charm.

The patched charm can be found in charmstore, in my personal namespace:

https://jujucharms.com/u/mariosplivalo/mongodb

Use this with word of caution as sharding support is non functional currently.

The 'proper' xenial charm is being developend, and the progress can be tracked here:

https://github.com/marcoceppi/layer-mongodb/

2016-11-17 18:36:46 INFO juju-log replica-set:5: replica_set_relation_broken-start
2016-11-17 18:36:46 DEBUG juju-log replica-set:5: am_i_primary: OperationError: command SON([('replSetGetStatus', 1)]) failed: not running with --replSet
2016-11-17 18:36:48 INFO replica-set-relation-broken Traceback (most recent call last):
2016-11-17 18:36:48 INFO replica-set-relation-broken File "/var/lib/juju/agents/unit-mongodb-1/charm/hooks/replica-set-relation-broken", line 1684, in <module>
2016-11-17 18:36:48 INFO replica-set-relation-broken hooks.execute(sys.argv)
2016-11-17 18:36:48 INFO replica-set-relation-broken File "/var/lib/juju/agents/unit-mongodb-1/charm/hooks/charmhelpers/core/hookenv.py", line 717, in execute
2016-11-17 18:36:48 INFO replica-set-relation-broken self._hooks[hook_name]()
2016-11-17 18:36:48 INFO replica-set-relation-broken File "/var/lib/juju/agents/unit-mongodb-1/charm/hooks/replica-set-relation-broken", line 1266, in replica_set_relation_broken
2016-11-17 18:36:48 INFO replica-set-relation-broken if am_i_primary():
2016-11-17 18:36:48 INFO replica-set-relation-broken File "/var/lib/juju/agents/unit-mongodb-1/charm/hooks/replica-set-relation-broken", line 1176, in am_i_primary
2016-11-17 18:36:48 INFO replica-set-relation-broken r = run_admin_command(c, 'replSetGetStatus')
2016-11-17 18:36:48 INFO replica-set-relation-broken File "/var/lib/juju/agents/unit-mongodb-1/charm/hooks/replica-set-relation-broken", line 506, in run_admin_command
2016-11-17 18:36:48 INFO replica-set-relation-broken return client.admin.command(cmdstr)
2016-11-17 18:36:48 INFO replica-set-relation-broken File "/usr/lib/python2.7/dist-packages/pymongo/database.py", line 396, in command
2016-11-17 18:36:48 INFO replica-set-relation-broken msg, allowable_errors)
2016-11-17 18:36:48 INFO replica-set-relation-broken File "/usr/lib/python2.7/dist-packages/pymongo/helpers.py", line 147, in _check_command_response
2016-11-17 18:36:48 INFO replica-set-relation-broken raise OperationFailure(msg % errmsg, code)
2016-11-17 18:36:48 INFO replica-set-relation-broken pymongo.errors.OperationFailure: command SON([('replSetGetStatus', 1)]) failed: not running with --replSet
2016-11-17 18:36:48 ERROR juju.worker.uniter.operation runhook.go:107 hook "replica-set-relation-broken" failed: exit status 1

The xenial charm has been released into the charmstore.

Please let me know if you still experience this issue.