Beta Version
This plugin implements an agents on demand approach for jenkins. It creates jenkins agents on the fly for labels that don't have an agent yet.
The on the fly created agents have a new launch type called JobComputerLauncher. This launcher just trigger configured jenkins job with pre defined parameters the provisioning of the agent itself is in the reasonability of the triggered Job.
The plugin support two different types of jobs for the agent lifecycle.
- provisioning
- decommissioning
The motivation and inspiration came from the following jenkins plugin docker-plugin. It provides jenkins agents based on Dockerfile templates that can be provided for specific labels. But it has a couple of limitations that lead to the decision to implement an different plugin.
The main differences between this plugin and the docker-plugin are:
- the jenkins don't need a connection to the docker daemon (support jenkins as docker)
- the agents are created on the fly (no need to preconfigure them)
- the agents are launched by trigger a configured jenkins job
For example when a jenkins job is started and requested an node with the label golang.
node("golang") {
sh("go --version")
}
If no agents exists with that assigned label then it will create a new agent
with a random name like golang-h234k and assign the golang label to it.
The agent use the job launcher to call the configured jenkins job with couple of predefined parameters like
- label
golang - node
golang-h234k.
- setup travis build
- provide full documentation
- upload to the jenkins plugin registry