TASK: [prechecks | Checking LVM volume group exists for Cinder] ***************
skipping: [computenode]
fatal: [controllernode] => One or more undefined variables: 'cinder_volume_group' is undefined

TASK: [prechecks | Checking docker-py version] ********************************
ok: [computenode]

TASK: [prechecks | Checking Ansible version] **********************************
failed: [computenode -> 127.0.0.1] => {"failed": true}
msg: Current Ansible version 1.9.4 is less than 2.0.0

FATAL: all hosts have already failed -- aborting

PLAY RECAP ********************************************************************
           to retry, use: --limit @/root/prechecks.retry

computenode                : ok=10   changed=0    unreachable=0    failed=1
controllernode             : ok=79   changed=0    unreachable=1    failed=0