You can use the vCenter Server Management Interface to view the overall health status of vCenter Server and health messages.
The overall health status of vCenter Server is based on the status of the hardware components such as CPU, memory, database, and storage. It is also based on the update component, which shows whether the software packages are up to date according to the last check for available patches.
Important: If you do not perform regular checks for available patches, the health status of the update component might become out-of-date. For information about how to check for
vCenter Server patches and enable automatic checks for
vCenter Server patches, see
vSphere Upgrade.
Prerequisites
Log in to the vCenter Server Management Interface as root.
Procedure
- In the Health Status pane, view the Overall Health badge.
Table 1. Health Status Badge Icon Description 
Good. All components are healthy. 
Warning. One or more components might become overloaded soon. View the details in the Health Messages pane.
Alert. One or more components might be degraded. Nonsecurity patches might be available. View the details in the Health Messages pane.
Critical. One or more components might be in an unusable status and vCenter Server might become unresponsive soon. Security patches might be available. View the details in the Health Messages pane.
Unknown. No data is available.
