Examine the status of your objects in the views and heatmaps so that you can identify the trends and spikes that are occurring with the resources on your cluster and objects. To determine whether any deviations have occurred, you can display overall summaries for an object, such as for the cluster disk space usage breakdown.
Before you begin
Use the Troubleshooting tabs to look for root causes. See Troubleshoot Problems with a Host System.
About this task
To examine the problems with your USA-Cluster further, use the Details views to display the metrics and collected capacity data for your cluster. Each view includes specific metrics data collected from your objects. For example, trend views use data collected from objects over time to generate trends and forecasts for resources such as memory, CPU, disk space, and so on.
Use the heatmaps to examine the capacity levels on the cluster, host systems, and virtual machines. The block sizes and colors are based on the metrics selected in the heatmap configuration. For example, the heatmap that shows the most abnormal workload for virtual machines is sized by the Badge|Workload (%) metric, and is colored by the Badge|Anomaly metric.
- Click .
- Examine the detailed information about USA-Cluster in the views.
- Click the Details tab and click Views.
The views provide multiple ways to look at different types of collected data by using trends, lists, distributions, and summaries.
- In the search text box, enter capacity.
The list filters and displays the capacity views for clusters and other objects.
- Click the view named Cluster Capacity Risk Forecast, and examine the number of virtual machines for USA-Cluster in the lower pane.
Even though the USA-Cluster has two host systems and 30 virtual machines, no capacity exists.
- Click the Details tab and click Views.
- Examine the host systems in the cluster, and reclaim capacity from the descendant virtual machines.
- Click the Analysis tab, and click Capacity Remaining.
- In the inventory tree, expand USA-Cluster, and click each of the host systems.
The host system named w2-vcopsqe2-009 is in a critical state, with no capacity remaining.
- In the lower pane, expand Memory, and expand Allocation.
The stress free value is zero, and the amount of memory available is zero, which indicates that the capacity of the host system has been depleted.
- Click the Details tab, and click Views, and click the Virtual Machine Reclaimable Capacity view.
- In the lower pane, click the title of the Reclaimable Memory column to sort the list of virtual machines so that the largest amount of reclaimable capacity is on top.
- To reclaim capacity from several virtual machines, click to the right of the first virtual machine name, then press Shift and click to the right of the last virtual machine that has capacity to reclaim.
The virtual machines that have reclaimable capacity are highlighted.
- Click the gear icon, and select Set CPU Count and Memory for VM.
- Click the Current CPU column title to sort the list according to the highest number of CPUs.
Based on the actual use of the virtual machines listed, the New CPU column recommends fewer CPUs for each virtual machine.
- Click the check box next to each virtual machine that has a recommended lower CPU count, and click OK.
By reducing the number of CPUs for each virtual machine, you free up capacity on your host system, and improve the USA-Cluster capacity and workload.
- Examine the heatmaps for the host system and virtual machine objects in USA-Cluster.
- In the inventory tree, click USA-Cluster.
- Click Details, click Heatmaps, and click through the list of heatmap views.
- Click Which VMs currently have the highest CPU demand and contention?
The heatmap displays blocks that represent the objects in USA-Cluster. The block for a virtual machine appears in red, which indicates that it has a critical problem.
- Hover over the red block and examine the details.
The cluster, host system, and virtual machine names appear, with links to more information about the object.
- Click Show Sparkline to display the activity trend on the virtual machine.
- Click each of the Details links to display more information.
To verify that freeing up memory on the virtual machines has improved the workload of the host system and the cluster, you can now examine the status of the host system and cluster.
You used views and heatmaps to evaluate the status of your objects and identify trends and spikes, and free up capacity for your host system and USA-Cluster. To further narrow in on problems, you can examine the other views and heatmaps. You can also create your own views and heatmaps.
What to do next
Examine the badge status for the objects in your environment hierarchy to determine which objects are in a critical state, and examine the object relationships to determine whether a problem on one object is affecting one or more other objects.