What is Hudson?
Hudson monitors executions of repeated jobs, such as building a software project or jobs run by cron. Among those things, current Hudson focuses on the following two jobs:
- Building/testing software projects continuously, just like CruiseControl or DamageControl. In a nutshell, Hudson provides an easy-to-use so-called continuous integration system, making it easier for developers to integrate changes to the project, and making it easier for users to obtain a fresh build. The automated, continuous build increases the productivity.
- Monitoring executions of externally-run jobs, such as cron jobs and procmail jobs, even those that are run on a remote machine. For example, with cron, all you receive is regular e-mails that capture the output, and it is up to you to look at them diligently and notice when it broke. Hudson keeps those outputs and makes it easy for you to notice when something is wrong.
Features
Hudson offers the following features:
- Easy installation: Just java -jar hudson.war, or deploy it in a servlet container. No additional install, no database.
- Easy configuration: Hudson can be configured entirely from its friendly web GUI with extensive on-the-fly error checks and inline help. There's no need to tweak XML manually anymore, although if you'd like to do so, you can do that, too.
- Change set support: Hudson can generate a list of changes made into the build from CVS/Subversion. This is also done in a fairly efficient fashion, to reduce the load on the repository.
- Permanent links: Hudson gives you clean readable URLs for most of its pages, including some permalinks like "latest build"/"latest successful build", so that they can be easily linked from elsewhere.
- RSS/E-mail/IM Integration: Monitor build results by RSS or e-mail to get real-time notifications on failures.
- After-the-fact tagging: Builds can be tagged long after builds are completed
- JUnit/TestNG test reporting: JUnit test reports can be tabulated, summarized, and displayed with history information, such as when it started breaking, etc. History trend is plotted into a graph.
- Distributed builds: Hudson can distribute build/test loads to multiple computers. This lets you get the most out of those idle workstations sitting beneath developers' desks.
- File fingerprinting: Hudson can keep track of which build produced which jars, and which build is using which version of jars, and so on. This works even for jars that are produced outside Hudson, and is ideal for projects to track dependency.
- Plugin Support: Hudson can be extended via . You can write plugins to make Hudson support tools/processes that your team uses.
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