[Bug 1623144] Re: Not collecting ceilometer volume data

[OpenStack Infra]

Reviewed:  https://review.openstack.org/370325
Committed: https://git.openstack.org/cgit/openstack/charm-cinder/commit/?id=07ae3acbb49368c58b0ad3d119ff21db39fb31c2
Submitter: Jenkins
Branch:    master

commit 07ae3acbb49368c58b0ad3d119ff21db39fb31c2
Author: Jorge Niedbalski <jorge.niedbalski at canonical.com>
Date:   Wed Sep 14 13:25:26 2016 -0300

    Adds volume-usage-audit-period config directive >= kilo.
    
    This change adds the config directive called
    volume-usage-audit-period for versions >= kilo.
    
    Also, According to the doc change I90dff1b5c2a7dd2943cfa7ff25bb63c08eb7986d,
    messagingv2 should be the default for anything > Icehouse.
    
    So, this change also sets the following configuration section for
    versions >= mitaka.
    
    [oslo_messaging_notifications]
    driver = messagingv2
    
    This change adds a specific configuration context that installs
    a crontab entry for running the cinder-volume-usage-audit recurrently.
    
    Change-Id: I0056edaac55210a1a1f509ec908ae61c0ea887df
    Closes-Bug: #1623144
    Signed-off-by: Jorge Niedbalski <jorge.niedbalski at canonical.com>


** Changed in: cinder (Juju Charms Collection)
       Status: In Progress => Fix Committed

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https://bugs.launchpad.net/bugs/1623144

Title:
  Not collecting ceilometer volume data

Status in cinder package in Juju Charms Collection:
  Fix Committed

Bug description:
  [Environment]

  Trusty-Mitaka
  Charms 16.07

  [Description]

  Some installations require to gather usage metrics from volumes.

  By default those metrics are not enabled:

  buntu at niedbalski-sec-bastion:~/openstack-charm-testing$ curl -H X-Auth-Token:$TOKEN http://$CEILOMETER:8777/v2/meters | python -m json.tool|grep -i vol
    % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed
  100  2902  100  2902    0     0   133k      0 --:--:-- --:--:-- --:--:--  134k

  
  In order to enable this, it is required to set some configuration variables in cinder.conf

  control_exchange = cinder 
  volume_usage_audit_period = hour 

  AND enable the messaging version 2 notifications:

  [oslo_messaging_notifications]
  driver = messagingv2

  Also, it is required to set a recurring cronjob for gathering the
  data:

  0 * * * * (PYTHONIOENCODING=utf-8 /usr/bin/cinder-volume-usage-audit
  1>> /var/log/cinder/cinder_audit_hourly_`date +\%Y\%m\%d`.log 2>&1)

  After enabling these configuration directives:

  ubuntu at niedbalski-sec-bastion:~/openstack-charm-testing$ curl -H X-Auth-Token:$TOKEN http://$CEILOMETER:8777/v2/meters | python -m json.tool| grep vol                                                                                 
    % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed
  100  8582  100  8582    0     0  38184      0 --:--:-- --:--:-- --:--:-- 38312
          "name": "volume.size",
          "name": "volume",
          "unit": "volume",
          "name": "volume.exists",
          "unit": "volume",
          "name": "volume.size",
          "name": "volume",
          "unit": "volume",
          "name": "volume.exists",
          "unit": "volume",
          "name": "volume.size",
          "name": "volume",
          "unit": "volume",
          "name": "volume.exists",
          "unit": "volume",

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