PeoplesGeek

Monitoring services like www.siteuptime.com or www.montastic.com require a page on your website to monitor.
This plugin provides a virtual target for your monitoring services that does not invoke other plugins (specifically avoiding the Google analytics plugins so that your statistics are not skewed by monitoring calls) 
The two targets provided for the monitoring service are:
<ul>
<li>monitor.htm – via .htaccess and does not use WordPress (but does use PHP)</li>
<li>monitorWP.htm – via WP and so tests the Database etc is working</li>
</ul>

PG Monitor

A virtual target file to be read by monitoring services instead of using a static HTML page.

Jon Otaegi

This simple plugin creates a <code>/health</code> endpoint to let you monitor the status of your WordPress website. The endpoint tests the status of your database connection and returns a <code>200 OK</code> HTTP status code while your page is healthy. You can read more on HTTP status codes at the <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes" rel="nofollow ugc">Wikipedia article</a>.
External tools such as website monitoring services can access the exposed endpoint at regular intervals. This can help you verify that your WordPress website is performing correctly.
You can find more information about the <a href="https://docs.microsoft.com/en-us/azure/architecture/patterns/health-endpoint-monitoring" rel="nofollow ugc">Health Endpoint Monitoring Pattern</a> at the <a href="https://docs.microsoft.com/en-us/azure/architecture/patterns/" rel="nofollow ugc">Microsoft Azure Documentation</a> website.
<h4>Development</h4>
This plugin is being developed on <a href="https://github.com/jonotaegi/wordpress-health-endpoint" rel="nofollow ugc">GitHub</a>. If you want to collaborate, feel free to submit pull requests or report bugs on the issue tracker.

Health Endpoint


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Creates a /health endpoint that returns a 200 OK HTTP status code while WordPress is performing correctly.

PG Monitor vs Health Endpoint