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ELK stack and application discovery Tony Messias

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what is a log?

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- https://en.wikipedia.org/wiki/Logfile “(...) records either events that occur in an operating system or other software runs, or messages (...)”

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the lifecycle of a log file Event Record Analyse Delete

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the lifecycle of a log file Event Analyse Record Delete

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your log can answer a lot of questions

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what are the most used browsers in our application?

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which countries we have more users from?

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how many users have signed up since the marketing campaign started?

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what is the best time for a deploy?

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which landing page have converted more users (A/B testing)?

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check the database, right?

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check your logs

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and I have scaled my application...

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ELK stack to the rescue!

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what does ELK mean?

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ELK stands for

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ELK architecture

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ELK architecture

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you can analyse old logs too

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not just for apache logs ● webserver ● application ● database ● businness (logging commands and events*)

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kibana is not only a dashboard

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that’s it! questions?

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references ● https://www.elastic.co/webinars/introduction-elk-stack ● https://www.digitalocean.com/community/tutorials/how-to-install-elasticsearch- logstash-and-kibana-4-on-ubuntu-14-04 ● https://speakerdeck.com/elasticsearch/introduction-to-the-elk-stack ● https://speakerdeck.com/peterskim12/introduction-to-the-elk-stack ● http://www.slideshare.net/GlobalLogicUkraine/the-elk-stack-get-to-know-logs- igor-rudyk ● http://www.slideshare.net/larrycai/learn-elk-in-docker ● https://speakerdeck.com/odolbeau/when-monolog-meet-elk