2 machines with same ip address after juju restore-backup ; deploy not possible

[Heather Lanigan]

juju 2.5.2 from 2.5/candidate snap
juju bootstrap localhost one --bootstrap-series xenial
juju enable-ha
juju switch controller
wait for juju show-controller | grep ha to show 3 ha-enabled
juju create backup

juju status

Model Controller Cloud/Region Version SLA Timestamp
controller one localhost/localhost 2.5.2 unsupported 12:52:09-05:00

Machine State DNS Inst id Series AZ Message
0 started 10.121.191.143 juju-adc312-0 xenial Running
1 started 10.121.191.161 juju-adc312-1 xenial Running
2 started 10.121.191.178 juju-adc312-2 xenial Running

juju remove-machine 1 2
wait for machines to disappear
juju restore-backup --file <from-above>

$ juju status
Model Controller Cloud/Region Version SLA Timestamp
controller one localhost/localhost 2.5.2 unsupported 12:57:38-05:00

Machine State DNS Inst id Series AZ Message
0 down 10.121.191.143 juju-adc312-0 xenial Running
1 started 10.121.191.143 juju-adc312-1 xenial Running
2 down 10.121.191.178 juju-adc312-2 xenial Running

from debug-log:
juju.worker.peergrouper cannot set replicaset: Found two member configurations with same _id field, members.0._id == members.1._id == 1

from syslog:
Mar 8 18:07:40 juju-adc312-0 mongod.37017[9415]: [conn4] replSetReconfig got BadValue: Found two member configurations with same _id field, members.0._id == members.1._id == 1 while validating { _id: "juju", version: 8, members: [ { _id: 1, host: "10.121.191.143:37017", priority: 1.0, tags: { juju-machine-id: "0" }, votes: 1 }, { _id: 1, host: "10.121.191.143:37017", priority: 0.0, tags: { juju-machine-id: "1" }, votes: 0 }, { _id: 3, host: "10.121.191.178:37017", priority: 0.0, tags: { juju-machine-id: "2" }, votes: 0 } ] }

$ juju-db.bash
MongoDB shell version: 3.2.15
connecting to: 127.0.0.1:37017/juju
2019-03-08T18:15:12.217+0000 W NETWORK [thread1] SSL peer certificate validation failed: unable to get local issuer certificate
2019-03-08T18:15:12.217+0000 W NETWORK [thread1] The server certificate does not match the host name 127.0.0.1
2019-03-08T18:15:12.248+0000 E QUERY [thread1] Error: Authentication failed. :
DB.prototype._authOrThrow@src/mongo/shell/db.js:1441:20
@(auth):6:1
@(auth):1:2

exception: login failed
Connection to 10.121.191.143 closed.

$ lxc list
+---------------+---------+-----------------------+------+------------+-----------+
| NAME | STATE | IPV4 | IPV6 | TYPE | SNAPSHOTS |
+---------------+---------+-----------------------+------+------------+-----------+
| juju-adc312-0 | RUNNING | 10.121.191.143 (eth0) | | PERSISTENT | |
+---------------+---------+-----------------------+------+------------+-----------+

http://people.canonical.com/~heather/juju-backup-20190308-175227.tar.gz

Unfortunately I haven't been able to reproduce this.

[Canonical Juju QA Bot (juju-qa-bot)]

This bug has not been updated in 2 years, so we're marking it Low importance. If you believe this is incorrect, please update the importance.