The blackbox_exporter allows for a variety of network checks to be performed, with many common modules available out of the box.
Reliable Insights
A blog on monitoring, scale and operational Sanity
Prometheus offers integrations with systems like PagerDuty, Email and Hipchat for alert notifications - but what if you want do something that's not supported out of the box? The Alertmanager's generic web hook has got you covered.
The most common way to learn about the expiry date of your website's SSL certificate is after it has expired. The blackbox exporter combined with Prometheus can let you know well in advance, letting you renew your certificate before users complain.
