update docker_swarm

drip-deployer/docker_swarm.py

- #! /usr/bin/env python
+#! /usr/bin/env python
+
+# Copyright 2017 --Yang Hu--
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
 
- # Copyright 2017 --Yang Hu--
- #
- # Licensed under the Apache License, Version 2.0 (the "License");
- # you may not use this file except in compliance with the License.
- # You may obtain a copy of the License at
- #
- #      http://www.apache.org/licenses/LICENSE-2.0
- #
- # Unless required by applicable law or agreed to in writing, software
- # distributed under the License is distributed on an "AS IS" BASIS,
- # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- # See the License for the specific language governing permissions and
- # limitations under the License.
- 
 
 __author__ = 'Yang Hu'
 
@@ -26,21 +26,28 @@ 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 info | grep Swarm")
-		temp_list = stdout.readlines()
-		temp_str = ""
-		for i in temp_list: temp_str += i
-		if temp_str.find("Swarm: active") != -1: return "SUCCESS"
+		stdin, stdout, stderr = ssh.exec_command("sudo docker info | grep 'Swarm'")
+		temp_list1 = stdout.readlines()
+		stdin, stdout, stderr = ssh.exec_command("sudo docker info | grep 'Is Manager'")
+		temp_list2 = stdout.readlines()
+		if temp_list1[0].find("Swarm: active") != -1:
+			if temp_list2[0].find("Is Manager: true") != -1:
+				stdin, stdout, stderr = ssh.exec_command("sudo docker swarm join-token worker")
+				retstr = stdout.readlines()
+				return retstr[2].encode()
 		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 %s" % (vm.ip))
+		stdout.read()
+		stdin, stdout, stderr = ssh.exec_command("sudo docker swarm join-token worker")
 		retstr = stdout.readlines()
+		ret = retstr[2].encode()
 		print "%s: ========= Swarm Manager Installed =========" % (vm.ip)
 	except Exception as e:
 		print '%s: %s' % (vm.ip, e)
-		return "ERROR:"+vm.ip+" "+str(e)
+		return "ERROR:" + vm.ip + " " + str(e)
 	ssh.close()
-	return retstr[4] + retstr[5] + retstr[6]
+	return ret
 
 def install_worker(join_cmd, vm):
 	try:
@@ -49,6 +56,9 @@ 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 info | grep 'Swarm'")
+		temp_list1 = stdout.readlines()
+		if temp_list1[0].find("Swarm: active") != -1: return "SUCCESS"
 		stdin, stdout, stderr = ssh.exec_command("sudo docker swarm leave --force")
 		stdout.read()
 		stdin, stdout, stderr = ssh.exec_command("sudo %s" % (join_cmd))
@@ -56,38 +66,28 @@ def install_worker(join_cmd, vm):
 		print "%s: ========= Swarm Worker Installed =========" % (vm.ip)
 	except Exception as e:
 		print '%s: %s' % (vm.ip, e)
-		return "ERROR:"+vm.ip+" "+str(e)
+		return "ERROR:" + vm.ip + " " + str(e)
 	ssh.close()
 	return "SUCCESS"
 
 def run(vm_list):
 	for i in vm_list:
-                parentDir = os.path.dirname(os.path.abspath(i.key))
-                os.chmod(parentDir, 0o700)
-                os.chmod(i.key, 0o600)
-		if i.role == "master": 
+		if i.role == "master":
 			join_cmd = install_manager(i)
-			if "ERROR" in join_cmd:
+			if "ERROR:" in join_cmd:
 				return join_cmd
-			elif "SUCCESS" in join_cmd:
-				swarm_file = open(i.key)
-				swarm_string = swarm_file.read()
-				swarm_file.close()
-				return swarm_string
-			else:
-				join_cmd = join_cmd.encode()
-				join_cmd = join_cmd.replace("\n" , "")
-				join_cmd = join_cmd.replace("\\" , "")
-				join_cmd = join_cmd.strip()
-				swarm_file = open(i.key)
-				swarm_string = swarm_file.read()
-				swarm_file.close()
+			parentDir = os.path.dirname(os.path.abspath(i.key))
+			os.chmod(parentDir, 0o700)
+			os.chmod(i.key, 0o600)
+			swarm_file = open(i.key)
+			swarm_string = swarm_file.read()
+			swarm_file.close()
 			break
-    
+
 	for i in vm_list:
-		if i.role == "slave": 
+		if i.role == "slave":
 			worker_cmd = install_worker(join_cmd, i)
-			if "ERROR" in worker_cmd:
+			if "ERROR:" in worker_cmd:
 				return worker_cmd
 
 	return swarm_string
\ No newline at end of file