vCenter Operations Manager

Each algorithm will start with different assumptions of about cycles.

Sigma DT uses fixed hourly cycle. The algorithm is based on hour-of-day, day-of-week.

CCPD (Common Candidate Partitioned Database) - makes no assumptions about cycles but it looks at the data and tries to interpret what the cycle would be. CCPD is looking for strong cycles. Its good at finding end of month cycle or quarter cycle when there is an upsurge of resource uses when you run monthly or quarterly reports or payroll functions. Read more »

vCenter Operations Manager shows different results for Health Score in the vSphere UI & Custom UI.

In the vSphere UI the Health Score is calculated as a combination of Workload, Anomalies and Faults score.

For the Custom UI (Enterprise Edition and above) it is calculated based on Anomalies only.

If vCenter Operations Manager can not connect to the vCenter Server it might be related to the vCenter Webservices no longer working.

You should restart the vCenter Webservices and then wait at least 3-4 collection cycles (up to 1 hour) unless it will show up again in green.

It happens that the Health Score on different objects (i.e. World and VirtualCenter, or VirtualCenter and DataStore).

Why can this happen? Here is an answer from Kit Colbert/VMware:
"You should think of the World as not just being composed of the VCs directly underneath it, but indeed every object in the inventory (it is the World, after all... :).

The world's Workload is the total demand divided by the total capacity across all objects. The world's Anomalies are rolled up from all objects' Anomalies in the inventory. And the world's Faults are based on all non-VM objects' Faults."

In vCenter Operations Manager Enterprise Edition or above you can setup specific active directory groups in the Custom UI for access. If you use a active directory groups for access restrictions you should ensure that AutoSync is enabled as well as that you give the system enough time to commit the changes (default: 1 hour).

If the Top-N widget does not allow timeframes under 30 days please ensure that you have at least vC Ops version 5.0.2 or higher installed and do not use the vC Ops for View adapter.

The Density Badge in the vSphere UI of vCenter Operations Manager shows a suggestion for the ideal vCPU:CPU Ratio.

This value reflects the maximum suggested number of virtual CPUs (vCPU) linked to one physical CPU core.

For a specific single metric you can define thresholds by modifying the package for the resource kind.

An alert can be defined either by using Dynamic Thresholds (DTs) KPIs or by opening the advanced config (double arrows down on the right hand side of the page) and the definition of a Hard Threshold (HT) to trigger of at a specific value.

Make sure you select the box to make it a KPI and set the criticality level that it will trigger off. Read more »

If you get the error message: "Update bundle Bad Request" when trying to upload the update .pak file to the vCenter Operations appliance you should check that you use a supported browser.

Especially if you use something like the newest Mac OS Firefox it might fail.

It is possible to run direct DB queries on the UI VM DB by connecting to

https://ui-vm-ip-or-dns/vcops-custom/dbAccessQuery.action