The appliance health interface provides several queries that you can use to monitor the condition of different appliance components. The interface reports summary status of the following services.

To use these reports, issue periodic queries to spot trouble areas. You can use the information to guide corrective actions before the condition compromises the function of the appliance.

For instance, if the appliance reports that its database health is yellow, consider increasing the virtual storage available to the appliance. Or, if the software packages health condition is red, initiate prompt installation of security updates.

To minimize the amount of request traffic needed to check health, query the overall health indicator. If the overall health becomes orange or red, query the individual subsystem health indicators to identify the problem areas that may need corrective actions.

For more information about using the appliance monitoring interface, see Monitoring the vCenter Server Appliance.