Hi Vaclav
What you’re looking for is $evm.root['vm'].operating_system.product_name
You might need to add a couple more associations to your walk_association_whitelist hash for object_walker to traverse what you’re after.
If you look at the object_walker_reader output you’ll probably see something that starts:
“*** not walking: ‘operating_system’ isn’t in the walk_association_whitelist hash for …”
Depending on your provider type the actual object name for your VM will be different, for example “MiqAeServiceManageIQ_Providers_Redhat_InfraManager_Vm” is the object name for a RHV virtual machine. You need to find the corresponding entry in the instance walk_association_whitelist attribute value and add ‘operating_system’, for example:
"MiqAeServiceManageIQ_Providers_Redhat_InfraManager_Vm":["operating_system"]
If you’re using the git imported version of object_walker then the instance is read-only, so you’d have to copy the instance to your own domain to edit it. Unfortunately editing a long attribute value in-place in the instance editor is fairly unwieldy. I find it easier to double-click the whitelist value, copy it, then paste into an editor to change. Then just paste your updated value back into the instance editor.
Hope this helps,
pemcg
