Ansible jenkins pipeline 2

pipeline2.groovy

		stage( 'Switch to master' ) {
			agent {
				node {
					label 'ansible'
				}
			}
			when {
				environment name: "SERVER", value: "master"
			}
			steps {
				withEnv(["INSTANCE_ID_TO_REGISTER=${env.JENKINS_MASTER_ID}", "INSTANCE_ID_TO_DEREGISTER=${env.JENKINS_BACKUP_ID}"]) {
					ansiblePlaybook("${env.WORKSPACE}/switch.yml") {
						forks(5) //Equivalent to 'Number of parallel processes'
						unbufferedOutput(true)
						hostKeyChecking(false)
						additionalParameters("-e 'ansible_python_interpreter=/usr/bin/python2.7' -c paramiko")
					}
				}
			}
		}