I personally use CheckMK.
- Offer a free "Raw" version.
- Can be deployed with docker.
- OSS
One thing is that it can be a lot to take in at first and took me a while to get used to it.
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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I personally use CheckMK.
One thing is that it can be a lot to take in at first and took me a while to get used to it.
While I use LibreNMS as it uses SNMP for monitoring (which is pretty much available everywhere), I don't believe it has http alerts, but I know for a fact that it can send Telegram messages.
uptime-kuma