Create plugin to monitor Resource Pools about check-vmware HOT 3 CLOSED

The original version of this plugin made the assumption (as the name might imply) that it was intended specifically for monitoring Resource Pools. From what I recall, I intended the plugin to not only perform memory use monitoring, but also vCPU usage (likely in GHz) and other useful Resource Pool-specific attributes.

As I write this, the original plugin is still only performing combined memory usage monitoring across a specified list of Resource Pools. The default Resources pool is excluded, omitting any VMs outside of Resource Pools.

We can take the original path and keep that behavior, or we can expand the scope and allow this plugin to monitor memory usage for all resources visible to the service account executing the plugin. If Resource Pools are specified, then only Resource Pools are used for the evaluation. If no Resource Pools are given, then all visible VMs are used for evaluation.

Looking again at the old plugin, these values were evaluated:

            $poolDetails = @{
                "name" = $_.Name;
                "cpuActive" = ($_.Runtime.Cpu.OverallUsage / 1000);
                "memoryConsumed" = ($_.Runtime.Memory.OverallUsage / 1GB)
                "memoryTotal" = ($_.Runtime.Memory.MaxUsage / 1GB)
            }

We never did anything with the vCPU usage details, but they were collected in case we eventually did.

Again, this puts the focus specifically on Resource Pools. We could alter the scope and create a plugin that handles both cases. Or, we could create two plugins, one that mirrors the exposed functionality from the old plugin (with the potential to extend it to monitor, and another that monitors memory .

I'm leaning towards two plugins, with the potential outcome of rearranging them later. I'll start with the first plugin as originally planned. I'll skip mention of vCPU usage (GHz) for now, potentially even moving that to a separate plugin (one purpose, one plugin).

from check-vmware.

https://vdc-download.vmware.com/vmwb-repository/dcr-public/a5f4000f-1ea8-48a9-9221-586adff3c557/7ff50256-2cf2-45ea-aacd-87d231ab1ac7/vim.ResourcePool.ResourceUsage.html

Well then.

https://vdc-download.vmware.com/vmwb-repository/dcr-public/a5f4000f-1ea8-48a9-9221-586adff3c557/7ff50256-2cf2-45ea-aacd-87d231ab1ac7/vim.ResourcePool.Summary.QuickStats.html#hostMemoryUsage

from check-vmware.

Draft 1 of the plugin uses the older, deprecated overallUsage field. Once that draft lands I'll update the plugin to use hostMemoryUsage instead.

from check-vmware.