Jenkins JNLP Agent Docker image
This is an image for Jenkins agent (FKA "slave") using JNLP to establish connection.
This agent is powered by the Jenkins Remoting library, which version is being taken from the base Docker Agent image.
See Jenkins Distributed builds for more info.
To run a Docker container
docker run jenkinsci/jnlp-slave -url http://jenkins-server:port <secret> <agent name>
Optional environment variables:
JENKINS_URL: url for the Jenkins server, can be used as a replacement to
-urloption, or to set alternate jenkins URL
HOST:PORT) connect to this agent host and port instead of Jenkins server, assuming this one do route TCP traffic to Jenkins master. Useful when when Jenkins runs behind a load balancer, reverse proxy, etc.
JENKINS_SECRET: agent secret, if not set as an argument
JENKINS_AGENT_NAME: agent name, if not set as an argument
Enabled JNLP protocols
By default, the JNLP3-connect is disabled due to the known stability and scalability issues.
You can enable this protocol on your own risk using the
JNLP_PROTOCOL_OPTS=-Dorg.jenkinsci.remoting.engine.JnlpProtocol3.disabled=false property (the protocol should be enabled on the master side as well).
In Jenkins versions starting from
2.27 there is a JNLP4-connect protocol.
If you use Jenkins
2.32.x LTS, it is recommended to enable the protocol on your instance.