Jenkins - Deletes nodes that are idle with matching prefix

delete-idle-nodes.groovy

String agentList = ""
String agentPrefix = "Ubuntu"
Integer total = 0
Integer oftype = 0
Integer deleted = 0

// Go through nodes and build a list of agents matching the supplied online/offline booleans
Jenkins.instance.nodes.each {
    //println "Checking agent: $it.nodeName"
  if (it.nodeName.contains(agentPrefix)){
    if (it.computer.isIdle()) {
      agentList += it.nodeName + "\n"
	  it.computer.doDoDelete()
      deleted += 1
    }
    oftype += 1
  }
  total += 1
}

println "Deleted Agent list: \n" + agentList
println "Total: ${total} Type Total: ${oftype} Deleted: ${deleted}"