For developers, application logs are critical to figuring out what’s going on inside the apps we create.In this talk I will show Graylog as an open source log management tool, providing central storage, processing, and analysis of log messages powered by Java,MongoDB and ElasticSearch.

These could be the talking points:

1.GrayLog architecture

The Graylog log server is based on Java and offers a means for combining several server nodes in a cluster for high availability and scalability. Graylog uses Elasticsearch as database for the log messages as well as MongoDB for application data.

2.Searching and analyzing: Graylog Web Interface

Graylog also has a web interface for searching and viewing Graylog messages. Filters can be applied and saved into logical “streams”, allowing you to look at a slice of your data.

3.Use case:Configure graylog in java projects with maven

As a standard for log events, Graylog promotes usage of the Graylog Extended Log Format (GELF). I will show a use case configuring graylog inside Java project with the GELF appender.

4.Integrating GrayLog with LogStash

In order to create a full log solution it is suitable to combine Graylog with Logstash with a little modification of Logstash and a custom Graylog Plugin.