volumeGroups relationships are missing

[Hemie143]

The volumeGroups relationships are missing from a zenpacklib.device.

[ethirolle]

As explained in https://zenoss.zendesk.com/agent/#/tickets/156400:

I think what you are describing is not a defect in zenpacklib, but rather its expected behavior:

• as described in https://zenpack-sdk.zenoss.com/en/latest/, the intent of zenpacklib is to allow you to build new ZenPacks entirely in YAML, with no need (in most cases) to write any Python code.

• As shown in https://zenpack-sdk.zenoss.com/en/latest/yaml-classes-and-relationships.html#standard-classes, zenpacklib only provides a very basic set of classes/components.

• Thus, by design, the "zenpacklib.Device" device class does not know anything about LVM components: these components are not defined in zenpacklib, they are defined in the Linux device class.

If your ActiveMQ devices are always Linux devices, and you always want to include all the relations and datasources of a normal Linux (SSH) device... then I think you can accomplish that by how you define the base class. I..e., by defining a new device class (e.g., "ActiveMQDevice"?), and setting its base to the Linux device class, I think you inherit all the Linux device relations/datasources/etc... and then you can use the YAML to add any additional relations, etc.

So for example, if you wish to create a new ActiveMQ device class (named "ActiveMQDevice") that "inherits" all the relations of a Linux device, I think you could do something like:

classes:
  ActiveMQDevice:
    base: [zenpacklib.Device, ZenPacks.zenoss.LinuxMonitor.LinuxDevice.LinuxDevice]