Automation of code build and deployment (Continuous Integration & Deployment)

 I have been working on code build and deployment automation for a couple of days. Have gone through many tools that are good and can help in this case. Below is a table that that lists down the applications that help at different stages of the cycle. Below table shows movement of the code (source to binary form).

Tools/ Stage	Version Contol	Checkout	Compile & build	Run unit tests	Configuration of deployment environments	Deployment of build to various environments	Deployment of DB changes to various environments
Tools	Git	Cruise Control	Cruise Control (ANT, MAVEN, Make, Scripts, etc)	Junit	cfEngine	Control Tier	Liquibase
	SVN	Jenkins	Jenkins (ANT, MAVEN, Make, Scripts, etc)	Nunit	Smartfrog	Capistrano	Scripts
	CVS		Hudson(ANT, MAVEN, Make, Scripts, etc)	Scripts	Bcfg2	Fabric	dbdeploy
	Clearcase	More tools				Smartfrog
	More Tools		More Tools	More unit testing frameworks

I was looking only at the open source tools, thus commercial tools are not found in this list. I found Jenkins to be amazingly simple and powerful. With a rich set of plugins and super easy interface and configuration its a breeze. In fact I was able to use it for the entire cycle right from checkout to deploy. It checks out the code, builds the war file (using ANT) transfers it to a windows or unix machine and deploy it.

While other tools might provide extra functionality but they will also add the overhead of managing multiple tools. Using a single tool for the entire cycle reduces the complexity of entire system.

Am currently exploring it for continuous integration and deployment for one of our legacy systems built on COBOL. Theoretically it would work. Just need to iron out a couple of issues on the legacy system front and it would be good to go.

Cruise control was a bit buggy (perhaps the windows build had an issue) and a lot more difficult to configure compared to Jenkins.

Also tried Beebox, but could not get to to work.

Did not try Luntbuild as the last release was somewhere in 2010. Not sure if it is still being maintained.

My verdict is Jenkins. The way to go...