Why is the option 'Launch agent via Java Web Start' not available

Issue

  • When creating a new node, the option to “Launch agent via Java Web Start” is not available in the “Launch method” field:

Environment

Resolution

The option “Launch agent via Java Web Start” is only available if the JNLP agent port is enabled (i.e. the TcpSlaveAgentListener is running).

The JNLP Agent port can be enabled under Manage Jenkins > Configure Global Security > Agents > TCP port for JNLP agents. Once enabled, the option “Launch agent via Java Web Start” will be available in the configuration of the Jenkins Nodes.

Note: It is recommended to use a Fixed agent port for better manageability.

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