"We are purely hosted in AWS. Production just surpassed 12,000 nodes. Hardcoding hosts into flat files on disk and then having a bunch of Perl scripts read in a flat file from disk was really a bottleneck [with Nagios]. The automatic registration and deregistration of hosts [in Sensu] was essential to allowing us to be flexible in AWS. We looked at DataDog, various forks of Nagios, and Prometheus, but ultimately we landed on Sensu."
"Monitoring services in a dynamic world like this is a difficult challenge, Sensu is the only open-source monitoring tool I’ve seen that is up to this challenge."







