This is a collectd plugin to collect metrics of a ScaleIO cluster. It queries the ScaleIO cluster on the primary MDM by using the 'scli --query_properties' command.
A grafana dashboard that visualizes the metrics is available as well.

General requirements:

• The collectd plugin has to be installed on all MDM nodes, so that in case of a MDM switch, the data will be collectd from the new primary MDM.
• scli_wrap.sh is a required bash script that wraps the scli login/logout with a locking mechanism.
• This collectd plugin is written in Python and thus requires the collectd-python plugin.

Build a package (ie: RPM) for your distribution using the build_plugin.sh script.

Copy the files manually from the plugin folder to the module path, ie:

cp plugin/* /usr/share/collectd/python

The plugin needs to be configured in collectd as follows.

<LoadPlugin "python">
    Globals true
</LoadPlugin>
<Plugin "python">
    ModulePath "/usr/share/collectd/python"
    Import scaleio
    <Module scaleio>
        Debug true                      # default: false
        Verbose true                    # default: false
        Cluster myClusterNameToDisplay  # Cluster name will be reported as the collectd hostname, default: myCluster
        Scli_wrap "/usr/bin/scli_wrap"  # Location of wrapping script used for login/logout, default: /usr/share/collectd/python/scli_wrap.sh
        User admin                      # ScaleIO user for getting metrics (creating a read-only user makes sense), default: admin
        Password admin                  # Password of the ScaleIO user, default: admin
        Pools poolA poolB               # list of pools to be reported or ignored (see: IgnoreSelected), default: empty
        IgnoreSelected false            # ignore pools given in the pools list, default: false
    </Module>
</Plugin>

A grafana dashboard that visualizes the pool data can be found in the grafana directory. The dashboard is ready to be installed, which can done by either packaging it (build_grafana_dashboard.sh) or by importing the dashboard manually.
Make sure to replace MY_DATASOURCE_NAME with the name of your grafana datasource that contains the collectd data, before importing/installing it.

sed -i 's/__dsname__/MY_DATASOURCE_NAME/g' grafana/dashboard.json

The plugin collects the following data

• Per storage pool (capacity is divided by 2, to have the 'real' values a user understands)
  • raw bytes
  • useable bytes
  • available bytes
  • allocated bytes
  • unreachable unused bytes
  • degraded bytes
  • failed bytes
  • spare bytes
  • user read iops
  • user read throughput
  • user write iops
  • user write throughput
  • rebalance iops
  • rebalance throughput
  • rebuild iops
  • rebuild throughput

See the LICENSE file for license rights and limitations (MIT).