update leave

drip-deployer/docker_swarm.py

@@ -25,6 +25,8 @@ def install_manager(vm):
 		ssh = paramiko.SSHClient()
 		ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
 		ssh.connect(vm.ip, username=vm.user, key_filename=vm.key)
+		stdin, stdout, stderr = ssh.exec_command("sudo docker swarm leave --force")
+		stdout.read()
 		stdin, stdout, stderr = ssh.exec_command("sudo docker swarm init --advertise-addr eth0")
 		retstr = stdout.readlines()
 		print "%s: ========= Swarm Manager Installed =========" % (vm.ip)
@@ -40,6 +42,8 @@ def install_worker(join_cmd, vm):
 		ssh = paramiko.SSHClient()
 		ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
 		ssh.connect(vm.ip, username=vm.user, key_filename=vm.key)
+		stdin, stdout, stderr = ssh.exec_command("sudo docker swarm leave --force")
+		stdout.read()
 		stdin, stdout, stderr = ssh.exec_command("sudo %s" % (join_cmd))
 		stdout.read()
 		print "%s: ========= Swarm Worker Installed =========" % (vm.ip)