The host view in the Platform Management Console gives you all the information you need to keep an eye on your entire cluster and to quickly and easily spot those hosts that are experiencing any difficulties. Use Filter Settings to customize the view of your hosts. For example, you can filter hosts by state to display only unavailable or closed hosts.
You can also select Hosts (List View) and customize the metrics you see in the table with Preferences.
Healthy hosts mean that your workload is running optimally and you are making the best possible use of your resources. If your hosts are closed or unavailable, your workload suffers. The more hosts you have available to run workload units, the more robust your cluster becomes. The first step in keeping your cluster healthy is to monitor the health of your hosts.
For details about the performance of a specific host, rest your cursor on the icon (when using the Icon View). In either the Icon View or the List View, click on the icon or host name to get host properties.
Your cluster only works as well as your hosts are performing. But how do you know when hosts are not working as well as possible? Use the hints below to get an idea of how you can use the Platform Management Console to monitor your host health.
Use the icon view to display your hosts and their health visually. It is the pattern of the health of the hosts that is important to maintaining a healthy cluster. There should be few hosts Unavailable or Closed compared to OK hosts.
The color height of the icons in the icon view gives you the CPU utilization of that host. Generally, in a healthy cluster, most hosts have between 7 and 9 bars in height, meaning they are using between 70% and 90% CPU utilization. Depending on the workload you are running, these thresholds may not be correct for you; they are general guidelines only.
Keep an eye on your master host at the bottom of the Host View. It should not be overloaded. Candidates are designed to back up your cluster should a master host become unavailable for any reason, but it is recommended that you safeguard the health of your master host as much as possible.