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Would one of them work for your needs>The plugin allows you to monitor the following:
Cluster_CPU_Usage
Cluster_DRS_Status
Cluster_EVC_Status
Cluster_HA_Status
Cluster_Memory_Usage
Cluster_Resource_Info
Cluster_Swapfile_Status
Cluster_Time_Drift
Cluster_vMotion_Info
Datastore_Cluster_Status
Datastore_Cluster_Usage
Datastore_Performance
Datastore_Performance_Overall
Datastore_Usage
Guest_CPU_Info
Guest_CPU_Usage
Guest_Disk_Performance
Guest_Disk_Usage
Guest_Host
Guest_Memory_Info
Guest_Memory_Usage
Guest_NIC_Usage
Guest_Snapshot
Guest_Status
Host_CPU_Info
Host_CPU_Usage
Host_License_Status
Host_Memory_Usage
Host_OS_Name_Version
Host_pNIC_Status
Host_pNIC_Usage
Host_Service
Host_Status
Host_Storage_Adapter_Info
Host_Storage_Adapter_Performance
Host_Switch_Status
Host_Up_Down_State
Host_vNIC_Status
Tasks_Events
vCenter_License_Status
vCenter_Name_Version