I maintain a small group of machines for personal use - minecraft servers, email servers, and so on. I recently undertook the task of implementing monitoring for them, and had an excellent experience using Sensu as opposed to some of the older monitoring solutions I've used in the past like Nagios.
I'm now looking for something in that similar vein for metric graphing. I've used cacti, ganglia, and this morning set up munin, but they all feel pretty crufty and lack some of the niceties I came to like when using Sensu over nagios like a native REST api, modern language for plugins, excellent and active community ecosystem, etc.
Does anybody have any recommendations for a metric/graphing system that fits that description? I understand rrdtool is probably still the king of metric graphing even when using modern frontends, but I'd still like to find some solution that feels as sleek and refreshing as moving to Sensu from Nagios was.
tl;dr I want some modern replacement for ganglia/cacti/munin.
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