Versions Node Monitors Plugin

This plugin offers two node monitors:

• Remoting Version

• JVM Version

Plugin tutorial

Remoting Version Node Monitor

Note	The remoting module handles the network connection between the Jenkins controller and agents.

This monitor will disconnect an agent if it is not running the same version of remoting library as the version on the Jenkins controller.

JVM Version Node Monitor

This monitor offers 3 levels of monitoring:

Level	Description & Examples
Default	Agent must run a JVM whose feature-release counter (e.g., 11 or 17) is greater than or equal to that of the controller (strongly recommended minimum). Even without this plugin, it is critical to the health of your Jenkins cluster that the feature-release counter of the agent JVM match that of the controller. Examples: Java 11.0.21 agent will not be disconnected from a Java 11.0.22 controller Java 11.0.22 agent will not be disconnected from a Java 11.0.21 controller Java 11.0.22 agent will not be disconnected from a Java 11.0.22 controller Java 17.0.8 agent will not be disconnected from a Java 11.0.22 controller Java 11.0.22 agent will be disconnected from a Java 17.0.8 controller Java 17.0.8 agent will not be disconnected from a Java 17.0.8 controller Java 17.0.8 agent will not be disconnected from a Java 17.0.8.1 controller Java 17.0.8.1 agent will not be disconnected from a Java 17.0.8 controller Java 17.0.8.1 agent will not be disconnected from a Java 17.0.8.1 controller Java 17.0.9+9 agent will not be disconnected from a Java 17.0.9+7 controller Java 17.0.9+7 agent will not be disconnected from a Java 17.0.9+9 controller Java 17.0.8 agent will be disconnected from a Java 21.0.2 controller Java 21.0.2 agent will not be disconnected from a Java 17.0.8 controller Java 21.0.1 agent will not be disconnected from a Java 21.0.2 controller Java 21.0.2 agent will not be disconnected from a Java 21.0.1 controller Java 21.0.2 agent will not be disconnected from a Java 21.0.2 controller
Paranoid	Agent must run a JVM whose version number — including feature-release counter, interim-release counter, update-release counter, and patch-release counter (e.g., 11.0.22 or 17.0.8.1) but not including pre-release and build information (for example, 11.0.22+7, 17.0.10+7, or 21.0.2+13) — is greater than or equal to that of the controller. Examples: Java 11.0.21 agent will be disconnected from a Java 11.0.22 controller Java 11.0.22 agent will not be disconnected from a Java 11.0.21 controller Java 11.0.22 agent will not be disconnected from a Java 11.0.22 controller Java 17.0.8 agent will not be disconnected from a Java 11.0.22 controller Java 11.0.22 agent will be disconnected from a Java 17.0.8 controller Java 17.0.8 agent will not be disconnected from a Java 17.0.8 controller Java 17.0.8 agent will be disconnected from a Java 17.0.8.1 controller Java 17.0.8.1 agent will not be disconnected from a Java 17.0.8 controller Java 17.0.8.1 agent will not be disconnected from a Java 17.0.8.1 controller Java 17.0.9+9 agent will not be disconnected from a Java 17.0.9+7 controller Java 17.0.9+7 agent will not be disconnected from a Java 17.0.9+9 controller Java 17.0.8 agent will be disconnected from a Java 21.0.2 controller Java 21.0.2 agent will not be disconnected from a Java 17.0.8 controller Java 21.0.1 agent will be disconnected from a Java 21.0.2 controller Java 21.0.2 agent will not be disconnected from a Java 21.0.1 controller Java 21.0.2 agent will not be disconnected from a Java 21.0.2 controller
Paranoid++	Agent must run a JVM whose version number — including feature-release counter, interim-release counter, update-release counter, and patch-release counter (e.g., 11.0.22 or 17.0.8.1) but not including pre-release and build information (for example, 11.0.22+7, 17.0.10+7, or 21.0.2+13) — is equal to that of the controller. Examples: Java 11.0.21 agent will be disconnected from a Java 11.0.22 controller Java 11.0.22 agent will be disconnected from a Java 11.0.21 controller Java 11.0.22 agent will not be disconnected from a Java 11.0.22 controller Java 17.0.8 agent will be disconnected from a Java 11.0.22 controller Java 11.0.22 agent will be disconnected from a Java 17.0.8 controller Java 17.0.8 agent will not be disconnected from a Java 17.0.8 controller Java 17.0.8 agent will be disconnected from a Java 17.0.8.1 controller Java 17.0.8.1 agent will be disconnected from a Java 17.0.8 controller Java 17.0.8.1 agent will not be disconnected from a Java 17.0.8.1 controller Java 17.0.9+9 agent will not be disconnected from a Java 17.0.9+7 controller Java 17.0.9+7 agent will not be disconnected from a Java 17.0.9+9 controller Java 17.0.8 agent will be disconnected from a Java 21.0.2 controller Java 21.0.2 agent will be disconnected from a Java 17.0.8 controller Java 21.0.1 agent will be disconnected from a Java 21.0.2 controller Java 21.0.2 agent will be disconnected from a Java 21.0.1 controller Java 21.0.2 agent will not be disconnected from a Java 21.0.2 controller

Configuration Page

Configuration as code

The node monitors can be configured automatically with the following configuration as code example:

jenkins:
  nodeMonitors:
  - jvmVersion:
      comparisonMode: RUNTIME_GREATER_OR_EQUAL_MASTER_BYTECODE
      ignored: true
  - remotingVersion:
      ignored: true