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Date Thu 06 September 2012

I’ve recently started casual work on a side-project to collect, store, and analyze apache logs from a bunch of servers - for the initial implementation, I’m looking to handle about 15M access_log lines per day (that works out to 173 lines/second assuming an even distribution, which there certainly isn’t). Here is a selection of links that I’ve been using for ideas and inspiration, both for the technical side (data collection, transport, storage and analysis) and visualization:

  • RRDtool - RRDtool Gallery - I’m starting a graphing/log analysis project, and looked here for some inspiration for my proof-of-concept code
  • Creating pretty graphs with RRDTOOL from Girish Venkatachalam.
  • There’s some good information on RRDtool’s “Abberant Behavior Detection” (Holt-Winters prediction, deviation and failure detection) on the rrdtool, rrdgraph_examples and rrdcreate documentation pages, but unfortunately no anchors to link directly to.
  • Cube - “Cube is a system for collecting timestamped events and deriving metrics. By collecting events rather than metrics, Cube lets you compute aggregate statistics post hoc. It also enables richer analysis, such as quantiles and histograms of arbitrary event sets. Cube is built on MongoDB and available under the Apache License on GitHub.”
  • Cubism.js - “Cubism.js is a D3 plugin for visualizing time series. Use Cubism to construct better realtime dashboards, pulling data from Graphite, Cube and other sources. Cubism is available under the Apache License on GitHub.” The demo on that page looks pretty cool.
  • Highcharts Demo Gallery - JS chart/graph library. It requires a paid license for commercial use (though it’s a bit unclear to me whether an internal ops dashboard would fall under this license provision) so I probably wouldn’t go with this one. They have some cool charts, including a dynamic line chart updating every second, a scatter plot and a nice zoomable time-series graph, though IMHO it’s not as nice as the Google Chart Tools (formerly Google Visualization) annotated timeline.
  • [ HOWTO ] Graphing Holt-Winters Predictive Analysis - Cacti forums
  • dygraphs - an impressive permissive-license JS chart library dedicated to visualizing dense time-series data. Developed by Google and now used by them (Google Correlate, Google Latitude) as well as NASA, 10gen and others. There are some very cool demos on that main page, and also on the tests page.
  • Graphite, JMXTrans, Ganglia, Logster, Collectd, say what ? « Planet DevOps
  • Visage
  • kgorman/mongo_graph - a tool to pull data from MongoDB and put it in RRD files
  • drraw - a perl-based graphing frontend (web UI) for RRDtool
  • etsy/logster · GitHub - Etsy’s Python tool to maintain a pointer on a log file, and parse at a regular rate feeding the data into a tool like Graphite or Ganglia.
  • cebailey59/charcoal - a Sinatra app that allows creation of dashboards from Graphite, collectd, or any other service that creates images from URL calls.
  • etsy/dashboard - some examples of how Etsy builds monitoring dashboards.
  • GDash – Graphite Dashboard | R.I.Pienaar
    • a Sinatra dashboard app for Graphite, using Twitter bootstrap for visualization.
  • paperlesspost/graphiti
    • a Ruby and JavaScript front-end for Graphite.
  • Graphite Screenshots - just two, but they get the idea across pretty well.
  • Graylog2 - a centralized log management application with a powerful web interface. Stores logs in ElasticSearch (which is built on Lucene, a Java-based index and search server) and statistics/graphs in MongoDB. It does analytics, alerting, monitoring/graphing and searching all through a web interface, and accepts log data via syslog, AMQP and GELF (its own log format). Java server and Ruby on Rails web UI.
  • Logstash - another centralized log project that stores and indexes logs, with search via a web UI. “Ship any event to anywhere over any protocol.” Takes many inputs including files, syslog, AMQP, Flume, STOMP, HTTP and even twitter, performs a number of filters including timestamp checks, parsing, dropping, joins, etc, and then sends logs back on an output including AMQP, Graylog2 GELF, STOMP, MongoDB, ElasticSearch, syslog, WebSockets and to Nagios. One particularly cool feature is its “file” input, which continuously tails a file and claims to be log rotation safe. Just cool.
  • jordansissel’s Logstash intro slides.
  • Kibana - an alternative interface for Logstash and ElasticSearch that allows searching, graphing and analysis of log data stored in Logstash.
  • Pivotal Labs: Talks - Metrics Metrics Everywhere (Coda Hale)
  • PaperlessPost - @quirkey’s talk on metrics
    • very good high level stuff, but slides only
  • paperlesspost/graphiti
    • graphiti, a JS/Ruby frontend for Graphite that does graphs, dashboards, and point-in-time snapshots of graphs. Lots of functionality.
  • Redis - a distributed key/value store that’s really popular with the cool kids. Another Redis Use Case: Centralized Logging • myNoSQL
  • Charcoal - a Sinatra (Ruby) dashboard app (ready for use on Heroku but usable anywhere). Graphite-oriented but will work with any tool that generates images from URLs.
  • etsy/logster - etsy’s Logster tool, which keeps a tail on log files, parses them, and ships metrics to Graphite or Ganglia.


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