Introduction Bosun is (description from official site) an open-source, MIT licensed, monitoring and alerting system by Stack Exchange. Bosun installation usually consists of: Bosun server (single static binary written in Go) Backend(s): Opentsdb, Graphite or ElasticSearch with Logstash schema scollector agent for gathering system metrics We’ll focus on installing Bosun with OpenTSDB backend as it’s currently best supported, although Bosun team tries it’s best not to be heavily dependent on it.