Deployment Automation Plarform
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GLU is a deployment automation platform. It has been built and deployed at LinkedIn in early 2010 and then released as open source in November 2010. The goal is to be able to automate the deployment of any kind of applications accross many nodes. Although written in groovy/java, the type of applications that can be deployed through GLU is not limited to java applications. GLU is a platform and the way it was architected and designed allows you to pick and choose which part you want to use... Check the docs folder (and soon the wiki) for more documentation on GLU.


In order to compile the code you need

Before doing anything go to


and issue:

grails upgrade

At the top simply run

gradle test

which should compile and run all the tests.

Note: if you do not run the 'grails upgrade' command, you may see this messages:

Plugin [shiro-1.1-SNAPSHOT] not installed. ...
Plugin [yui-] not installed. ...
Plugin [hibernate-1.3.5] not installed. ...
Plugin [tomcat-1.3.5] not installed. ...

IDE Support

You can issue the command (at the top)

gradle idea

which will use the gradle IDEA plugin to create the right set of modules in order to open the project in IntelliJ IDEA.

Directory structure

  • agent/org.linkedin.glu.agent-api: Agent api (like Agent class)

  • agent/org.linkedin.glu.agent-impl: Implementation of the agent

  • agent/org.linkedin.glu.agent-rest-resources: REST resources (endpoint) (used in the agent)

  • agent/org.linkedin.glu.agent-rest-client: REST client (which talks to the resources) (used in both agent-cli and console-webapp)

  • agent/org.linkedin.glu.agent-cli: The command line which can talk to the agent directly

      gradle package // to create the package
      gradle package-install // to install locally (for dev)
  • agent/org.linkedin.glu.agent-tracker Listens to ZooKeeper events to track the agent writes (used in console-webapp).

  • agent/org.linkedin.glu.agent-server-impl: Contains the implementation of the agent server cli.

  • agent/org.linkedin.glu.agent-server-upgrade: Create the upgrade package (to be used when uprading an already installed agent).

      gradle package // create the upgrade package
  • agent/org.linkedin.glu.agent-server: The actual server

      gradle package // create the package
      gradle package-install // to install locally (for dev)
      gradle setup // setup dev fabric and keys in zookeeper (used in conjunction with gradle install)
      gradle setup-x-y // setup x agents in y fabrics: automatically setup zookeeper with the right set of
                          data and create x agents package with a wrapper shell script to start them all
      gradle clean-setup // to delete the setup
  • console/org.linkedin.glu.console-webapp: The console webapp (grails application).

      gradle lib // compile all the dependencies and put them in the lib folder
      grails run-app // after running gradle lib, you can simply run grails directly as it will use the
                     // libraries in lib to boot the app

Installing/Running locally

Check the document followed by the for a quick walkthrough the console.

Build configuration

The project uses the org.linkedin.userConfig plugin and as such can be configured



Check the wiki