Node exporter, Prometheus and grafana

I use my family. It has a simple volume based alert for when services are offline.

Beszel. Probably the easiest tool of all the mentioned in this thread.

https://github.com/henrygd/beszel

uptime-kuma is what I use

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.

• Base ansible role installs Prometheus node exporter, configured with the text file collector
• VM automations push DNS records so that the Prometheus dns-sd automatically discovers them
• Ansible roles for add Cron jobs that generate metrics for specific systems and dump them for the text file collector
• Grafana for dashboards
• Karma as a UI in front of Prometheus alert manager

Zabbix is pretty quick and easy. Many different services built in for sending notifications, along with your own custom (including webhooks). Fully customizable dashboard as well so you can add whatever you want/need at a glance.

We just recently started using zabbix. Open source and has a web interface to get a central view that can be accessed from wherever we allow it.

So far it's been great but er have had little time and so far have used only 1% of what it can do

Still, I'd recommend it. Super easy to install, seems light weight, has clients for any os you'd need, can send out alerts (we currently use pushover for that)

Cockpit.

Netdata is exactly what you're looking for. It's basically an all in one monitoring and and alerting suite that collects and analyzes data, and provides a gorgeous web dashboard for you to view.

You can also manually replicate this using Prometheus, Grafana and other tools, but that requires a much bigger effort to set up.

Edit: There's a public demo instance where you can try everything out: https://frankfurt.netdata.rocks/

Check out Netdata or Zabbix.

Nagios. It does depend on what you mean by monitor though. Nagios is good at telling you that "service A on host B" is down" but less useful for looking at things like performance trends. I particularly like being able to setup dependencies between services, so I get the alert for the root cause, and not all of the services that have gone down because of it.

send alerts via http request

On this specifically you might want to check ntfy as it's quite easy to setup and can give you notifications on pretty much any device (including iOS) via your own infrastructure all the way down to basics e.g. SSE. That mean you can subscribe to a topic, e.g. servers per physical location, alert level, etc and only get the ones you need.

I just see if it works when I need it. If I’m at home it works. If I’m at work it may work. If I’ve left to travel it’s 95% definitely down and cannot be fixed. This works well!

telegraf, influxdb, grafana, and gatus

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.

Serverbox. https://github.com/lollipopkit/flutter_server_box

Zabbix

I remember liking Sensu. We used it a little bit at my previous job, but I didn't get a chance to work with it much. I can't remember what we specifically used it for though. Sorry, wish I had more info for you.

Hello,

I'm still using Nagios here. And for the availability of the services I'm using uptime-kuma (in a docker).

Telegraf+influxdb+grafana is what I use at work, it is a multi purpose tool though, can be used to monitor EVERYTHING though

https://en.m.wikipedia.org/wiki/Nagios

Not exactly what you're looking for, but I like using proxmox