maG66

Install the plugin and check the Status URL Link. You can submit it to observo-monitoring.com to monitor it 24/7. 
– shell_exec must be available for cpu and memory 
– The plugin will install an open rest api 
– External servers can access this api to get performance stats 
– Services like observo-monitoring.com can give you an added value
<h3>Credits</h3>
<a href="https://www.observo-monitoring.com" title="Observo Monitoring" rel="nofollow ugc">Observo Monitoring</a>

Observo Monitoring

Monitor your Server Memory, Disk and CPU from external server

Gaucho Plugins

alpipego

The Version Info plugin helps you track essential version information for your WordPress install by displaying key system details such as WordPress version, PHP version, Web Server type, and MySQL version. This can be displayed in three areas:
<ul>
<li>Admin footer – Displays WordPress, PHP, MySQL, and Web Server versions in the footer for quick reference.</li>
<li>WP-Admin Bar – Optionally add version details to the top WP-Admin bar for instant visibility while navigating the admin area.</li>
<li>Dashboard Widget – Activate the dashboard widget via the Screen Options to quickly view your site’s version information.</li>
</ul>
Key features of this plugin include:
<ul>
<li>Shows the current WordPress version. If a new version is available, it will display the current version alongside the latest available version in the footer, with a link to update.</li>
<li>Displays the PHP version running on your server, making it easy to verify if your site meets compatibility requirements for plugins and themes.</li>
<li>Shows the Web Server type and version, whether you’re using Apache, Nginx, or another server setup.</li>
<li>Includes the MySQL version to help you track the database version your WordPress site uses.</li>
</ul>
<h4>Why use this Plugin?</h4>
Ever wondered which version of WordPress or PHP your site is running? This plugin ensures you have that critical information at a glance.
Whether you’re a site administrator, developer, or someone managing a WordPress site, knowing your software versions is crucial for troubleshooting, compatibility checks, and ensuring optimal performance.
For developers, this plugin is an invaluable tool. When clients report an issue, they can quickly send you the version details of their setup by simply sharing a screenshot of their admin footer or copying the information. This makes diagnosing issues easier, as you’ll immediately know which version of WordPress, PHP, and MySQL they are using, along with the web server information.

Version Info | Show WP, PHP, MySQL & Web Server Versions in Admin Dashboard

This plugin is just as much as it has to be. Couldn't have written it better ;)

Simple, but very useful

Easily display the current WP, PHP, Web Server, and MySQL versions in the WP-Admin Footer, Admin bar, or as a widget in screen options.

Observo Monitoring vs Version Info | Show WP, PHP, MySQL & Web Server Versions in Admin Dashboard