Matt Horan's Blog


Blackbox Monitoring with Prometheus

blackbox-monitoring monitoring prometheus google-cloud grafana gke

Prior to migrating from Cacti to Prometheus for infrastructure monitoring, I’d already been using Prometheus for blackbox monitoring. A couple of years ago I was looking for a way to monitor the health of various services I had deployed across virtual machines and containers running on my home network. I had used Pingdom for this in the past, but they killed their free plan in 2019. I had quite a few services to monitor, including multiple Web servers, a mail server, IRC server, and more. I surveyed the hosted service landscape but the available free options didn’t support the variety of services I needed to monitor; and the paid services cost as much as a single VPS at ARP Networks.


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