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Last active January 7, 2016 02:32
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Prometheus monitoring system overview
Raw
prometheus.md

Prometheus Server

demo url: http://10.103.1.62:9090

Client

demo url: http://10.103.1.62:9100/metrics

Prometheus is based on a 'pull' mechanism, that scrapes metrics from the configured targets (like passive agent check in Zabbix). However, for short-lived jobs, it provides an intermediary push gateway for scraping metrics.

Client can be written in:

  • Go, Python, Java, Ruby
  • Bash, NodeJS, .Net (Unofficial support libraries)

Client format

...
# HELP node_memory_MemAvailable MemAvailable from /proc/meminfo.
# TYPE node_memory_MemAvailable gauge
node_memory_MemAvailable 5.65276672e+08
# HELP node_memory_MemFree MemFree from /proc/meminfo.
# TYPE node_memory_MemFree gauge
node_memory_MemFree 8.0564224e+07
# HELP node_memory_MemTotal MemTotal from /proc/meminfo.
# TYPE node_memory_MemTotal gauge
node_memory_MemTotal 1.027239936e+09
...

Storage

Prometheus stores data in a local storage and uses LevelDB for indexes. It also can export the data to remote stores like influxDB and OpenTSDB

Alert

Prometheus supports sending alerts to following channels

  • Email
  • Pushover
  • Pagerduty
  • Hipchat
  • Slack
  • Flowdock

Screenshots

An example of Prometheus graph. Prometheus Simple Graph

An example of graphs from PromDash Promdash

An example of sending Prometheus metrics to InfluxDB InfluxDB

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