Network service checks allow you to monitor external access to your servers and webpages.
To add a network service check to an existing server
Go to an instance's Instance Details page.
Select the Monitoring Config tab.
The Add Services and Applications to Monitor modal is displayed. This modal shows you the checks you already have configured, the services detected on the server that are available to be monitored, and the rest of the catalog of available checks and plugins.
Choose the check type you would like to add by selecting Add.
For specific instructions on how to add, see the catalog of available checks and plugins.