Agreed about Zabbix (even tho Zabbix is itself massive).
We use UptimeRobot for external monitoring and Observium for internal monitoring. I remember the days of cacti and we used it. I knew people who use nagios, but haven't given it a good try personally.I so much want to change from our old nagios monitoring server to something newer. But just cannot seem to get myself to as I understand nagios so well and it "just works".
Maybe one day I will force myself to do it on a weekend.
+1 for both internal as well as external monitoring. Uptime Robot is good, as is Pingdom.We use UptimeRobot for external monitoring and Observium for internal monitoring. I remember the days of cacti and we used it. I knew people who use nagios, but haven't given it a good try personally.
Used Pingdom for over 10 years, all the way till 2019. We switched to UptimeRobot and never looked back. Pingdom was great, but they got away from the basic 'PING' and started charging more and more while their product/service went downhill.+1 for both internal as well as external monitoring. Uptime Robot is good, as is Pingdom.