Ensure-availability fails with ' failed to find any voting machines' after backup/restore.

[Jorge Niedbalski]

[Versions]

ubuntu@niedbalski2-bastion:~$ juju --version
1.21.1-trusty-amd64
ubuntu@niedbalski2-bastion:~$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04.1 LTS
Release: 14.04
Codename: trusty

[Description]

ubuntu@niedbalski2-bastion:~$ juju status -v
environment: niedbalski2
machines:
  "0":
    agent-state: started
    agent-version: 1.21.1
    dns-name: 10.5.0.61
    instance-id: 225fbf72-f753-4fa0-bbf4-e925dd6581a9
    instance-state: ACTIVE
    series: trusty
    hardware: arch=amd64 cpu-cores=1 mem=1024M root-disk=20480M
    state-server-member-status: has-vote
  "1":
    agent-state: started
    agent-version: 1.21.1
    dns-name: 10.5.0.62
    instance-id: 3c75f984-7282-4913-9d20-00332af5464f
    instance-state: ACTIVE
    series: trusty
    hardware: arch=amd64 cpu-cores=1 mem=1024M root-disk=20480M
    state-server-member-status: has-vote
  "2":
    agent-state: started
    agent-version: 1.21.1
    dns-name: 10.5.0.63
    instance-id: e483e28c-de0c-407f-be6c-f4363fe57edf
    instance-state: ACTIVE
    series: trusty
    hardware: arch=amd64 cpu-cores=1 mem=1024M root-disk=20480M
    state-server-member-status: has-vote
services: {}

ubuntu@niedbalski2-bastion:~$ nova delete 225fbf72-f753-4fa0-bbf4-e925dd6581a9
ubuntu@niedbalski2-bastion:~$ nova delete 3c75f984-7282-4913-9d20-00332af5464f
ubuntu@niedbalski2-bastion:~$ nova delete e483e28c-de0c-407f-be6c-f4363fe57edf
ubuntu@niedbalski2-bastion:~$ juju status

Hangs..

ubuntu@niedbalski2-bastion:~$ juju restore -e niedbalski2 juju-backup-20150210-1352.tgz
extracted credentials from backup file
re-bootstrapping environment
Bootstrapping environment "niedbalski2"
Starting new instance for initial state server
Launching instance
 - 7642836a-571e-4c7e-8a11-e6d2645bc7c8
Installing Juju agent on bootstrap instance
Waiting for address
Attempting to connect to 10.5.0.64:22
Warning: Permanently added '10.5.0.64' (ECDSA) to the list of known hosts.
Logging to /var/log/cloud-init-output.log on remote host
Running apt-get update
Running apt-get upgrade
Installing package: curl
Installing package: cpu-checker
Installing package: bridge-utils
Installing package: rsyslog-gnutls
Fetching tools: curl -sSfw 'tools from %{url_effective} downloaded: HTTP %{http_code}; time %{time_total}s; size %{size_download} bytes; speed %{speed_download} bytes/s ' --retry 10 -o $bin/tools.tar.gz <[https://streams.canonical.com/juju/tools/releases/juju-1.21.1-trusty-amd64.tgz]>
Bootstrapping Juju machine agent

Starting Juju machine agent (jujud-machine-0)
Bootstrap complete
connecting to newly bootstrapped instance
restoring bootstrap machine
copying backup file to bootstrap host
updating bootstrap machine
restored bootstrap machine
opening state
updating all machines
ubuntu@niedbalski2-bastion:~$ juju status
WARNING ignoring invalid cached API endpoint environment UUID
environment: niedbalski2
machines:
  "0":
    agent-state: started
    agent-version: 1.21.1
    dns-name: 10.5.0.61
    instance-id: 225fbf72-f753-4fa0-bbf4-e925dd6581a9
    instance-state: ACTIVE
    series: trusty
    hardware: arch=amd64 cpu-cores=1 mem=1024M root-disk=20480M
    state-server-member-status: has-vote
services: {}
ubuntu@niedbalski2-bastion:~$ juju ensure-availability
ERROR internal error, failed to find any voting machines
ubuntu@niedbalski2-bastion:~$
ubuntu@niedbalski2-bastion:~$ juju ensure-availability -n 3
ERROR internal error, failed to find any voting machines

[Jorge Niedbalski (niedbalski)]

Seems that setting the votingmachineids[0] to string(0) works as a workaround until the patch arrives.

juju:PRIMARY> db.stateServers.update({"_id":"e"}, {$set:{"machineids" : ["0"]}})
juju:PRIMARY> db.stateServers.update({"_id":"e"}, {$set:{"votingmachineids" : ["0"]}})

Thanks.