improved autoscaling example

example-projects/tug-of-war-in-the-clouds/aws-boto3-standalone-db-autoscaling/start.py

@@ -70,7 +70,7 @@ print(response)
 reservations = response['Reservations']
 for reservation in reservations:
     for instance in reservation['Instances']:
-        if instance['State']['Name'] == "running" or instance['State']['Name'] == "pending":
+        if instance['State']['Name'] == "running":
             response = ec2Client.terminate_instances(InstanceIds=[instance['InstanceId']])
             print(response)
             instanceToTerminate = ec2Resource.Instance(instance['InstanceId'])
@@ -84,24 +84,38 @@ try:
     response = elbv2Client.describe_load_balancers(Names=['tug-of-war-asg-loadbalancer'])
     loadbalancer_arn = response.get('LoadBalancers', [{}])[0].get('LoadBalancerArn', '')
     response = elbv2Client.delete_load_balancer(LoadBalancerArn=loadbalancer_arn)
+
+    waiter = elbv2Client.get_waiter('load_balancers_deleted')
+    waiter.wait(LoadBalancerArns=[loadbalancer_arn])
 except ClientError as e:
     print(e)
 
-time.sleep(5)
-
 try:
     response = elbv2Client.describe_target_groups(Names=['tug-of-war-asg-targetgroup'])
-    targetgroup_arn = response.get('TargetGroups', [{}])[0].get('TargetGroupArn', '')
+    while len(response.get('TargetGroups', [{}])) > 0:
-    response = elbv2Client.delete_target_group(TargetGroupArn=targetgroup_arn)
+        targetgroup_arn = response.get('TargetGroups', [{}])[0].get('TargetGroupArn', '')
+        try:
+            response = elbv2Client.delete_target_group(TargetGroupArn=targetgroup_arn)
+        except ClientError as e:
+            print(e)
+        response = elbv2Client.describe_target_groups(Names=['tug-of-war-asg-targetgroup'])
+        time.sleep(5)
 except ClientError as e:
     print(e)
 
-
 print("Delete old security group...")
 print("------------------------------------")
 
 try:
-    response = ec2Client.delete_security_group(GroupName='tug-of-war-asg')
+    response = ec2Client.describe_security_groups(Filters=[{'Name': 'group-name', 'Values': ['tug-of-war-asg']}])
+    while len(response.get('SecurityGroups', [{}])) > 0:
+        security_group_id = response.get('SecurityGroups', [{}])[0].get('GroupId', '')
+        try:
+            response = ec2Client.delete_security_group(GroupName='tug-of-war-asg')
+        except ClientError as e:
+            print(e)
+        response = ec2Client.describe_security_groups(Filters=[{'Name': 'group-name', 'Values': ['tug-of-war-asg']}])
+        time.sleep(5)
 except ClientError as e:
     print(e)
 
@@ -288,7 +302,9 @@ response = asClient.create_auto_scaling_group(
     ],
 )
 
-print('app/tug-of-war-asg-loadbalancer/'+str(loadbalancer_arn).split('/')[2]+'/targetgroup/tug-of-war-asg-targetgroup/'+str(targetgroup_arn).split('/')[1]+'target-group-id')
+print(loadbalancer_arn)
+print(targetgroup_arn)
+print('app/tug-of-war-asg-loadbalancer/'+str(loadbalancer_arn).split('/')[3]+'/targetgroup/tug-of-war-asg-targetgroup/'+str(targetgroup_arn).split('/')[2])
 
 response = asClient.put_scaling_policy(
     AutoScalingGroupName='tug-of-war-asg-autoscalinggroup',
@@ -298,7 +314,7 @@ response = asClient.put_scaling_policy(
     TargetTrackingConfiguration={
         'PredefinedMetricSpecification': {
             'PredefinedMetricType': 'ALBRequestCountPerTarget',
-            'ResourceLabel': 'app/tug-of-war-asg-loadbalancer/'+str(loadbalancer_arn).split('/')[2]+'/targetgroup/tug-of-war-asg-targetgroup/'+str(targetgroup_arn).split('/')[1]+'target-group-id'
+            'ResourceLabel': 'app/tug-of-war-asg-loadbalancer/'+str(loadbalancer_arn).split('/')[3]+'/targetgroup/tug-of-war-asg-targetgroup/'+str(targetgroup_arn).split('/')[2]
         },
         'TargetValue': 5.0,
     }

example-projects/tug-of-war-in-the-clouds/aws-boto3-standalone-db-autoscaling/stop.py

@@ -0,0 +1,120 @@
+import time
+
+import boto3
+from botocore.exceptions import ClientError
+
+region = 'eu-central-1'
+availabilityZone = 'eu-central-1b'
+imageId = 'ami-0cc293023f983ed53'
+instanceType = 't3.nano'
+keyName = 'srieger-pub'
+subnet1 = 'subnet-41422b28'
+subnet2 = 'subnet-5c5f6d16'
+subnet3 = 'subnet-6f2ea214'
+
+userDataDB = ('#!/bin/bash\n'
+              '#!/bin/bash\n'
+              '# extra repo for RedHat rpms\n'
+              'yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm\n'
+              '# essential tools\n'
+              'yum install -y joe htop git\n'
+              '# mysql\n'
+              'yum install -y mariadb mariadb-server\n'
+              '\n'
+              'service mariadb start\n'
+              '\n'
+              'echo "create database cloud_tug_of_war" | mysql -u root\n'
+              '\n'
+              'echo "create table clouds ( cloud_id INT AUTO_INCREMENT, name VARCHAR(255) NOT NULL, value INT, max_value INT, PRIMARY KEY (cloud_id))" | mysql -u root cloud_tug_of_war\n'
+              '\n'
+              'echo "CREATE USER \'cloud_tug_of_war\'@\'%\' IDENTIFIED BY \'cloudpass\';" | mysql -u root\n'
+              'echo "GRANT ALL PRIVILEGES ON cloud_tug_of_war.* TO \'cloud_tug_of_war\'@\'%\';" | mysql -u root\n'
+              'echo "FLUSH PRIVILEGES" | mysql -u root\n'
+              )
+
+# convert with: cat install-mysql | sed "s/^/'/; s/$/\\\n'/"
+
+client = boto3.setup_default_session(region_name=region)
+ec2Client = boto3.client("ec2")
+ec2Resource = boto3.resource('ec2')
+
+response = ec2Client.describe_vpcs()
+vpc_id = response.get('Vpcs', [{}])[0].get('VpcId', '')
+
+elbv2Client = boto3.client('elbv2')
+asClient = boto3.client('autoscaling')
+
+print("Deleting auto scaling group...")
+print("------------------------------------")
+
+try:
+    response = asClient.delete_auto_scaling_group(AutoScalingGroupName='tug-of-war-asg-autoscalinggroup', ForceDelete=True)
+except ClientError as e:
+    print(e)
+
+print("Deleting launch configuration...")
+print("------------------------------------")
+
+try:
+    response = asClient.delete_launch_configuration(LaunchConfigurationName='tug-of-war-asg-launchconfig')
+except ClientError as e:
+    print(e)
+
+
+
+print("Deleting old instances...")
+print("------------------------------------")
+
+response = ec2Client.describe_instances(Filters=[{'Name': 'tag-key', 'Values': ['tug-of-war-asg']}])
+print(response)
+reservations = response['Reservations']
+for reservation in reservations:
+    for instance in reservation['Instances']:
+        if instance['State']['Name'] == "running":
+            response = ec2Client.terminate_instances(InstanceIds=[instance['InstanceId']])
+            print(response)
+            instanceToTerminate = ec2Resource.Instance(instance['InstanceId'])
+            instanceToTerminate.wait_until_terminated()
+
+
+print("Deleting load balancer and deps...")
+print("------------------------------------")
+
+try:
+    response = elbv2Client.describe_load_balancers(Names=['tug-of-war-asg-loadbalancer'])
+    loadbalancer_arn = response.get('LoadBalancers', [{}])[0].get('LoadBalancerArn', '')
+    response = elbv2Client.delete_load_balancer(LoadBalancerArn=loadbalancer_arn)
+
+    waiter = elbv2Client.get_waiter('load_balancers_deleted')
+    waiter.wait(LoadBalancerArns=[loadbalancer_arn])
+except ClientError as e:
+    print(e)
+
+try:
+    response = elbv2Client.describe_target_groups(Names=['tug-of-war-asg-targetgroup'])
+    while len(response.get('TargetGroups', [{}])) > 0:
+        targetgroup_arn = response.get('TargetGroups', [{}])[0].get('TargetGroupArn', '')
+        try:
+            response = elbv2Client.delete_target_group(TargetGroupArn=targetgroup_arn)
+        except ClientError as e:
+            print(e)
+        response = elbv2Client.describe_target_groups(Names=['tug-of-war-asg-targetgroup'])
+        time.sleep(5)
+except ClientError as e:
+    print(e)
+
+print("Delete old security group...")
+print("------------------------------------")
+
+try:
+    response = ec2Client.describe_security_groups(Filters=[{'Name': 'group-name', 'Values': ['tug-of-war-asg']}])
+    while len(response.get('SecurityGroups', [{}])) > 0:
+        security_group_id = response.get('SecurityGroups', [{}])[0].get('GroupId', '')
+        try:
+            response = ec2Client.delete_security_group(GroupName='tug-of-war-asg')
+        except ClientError as e:
+            print(e)
+        response = ec2Client.describe_security_groups(Filters=[{'Name': 'group-name', 'Values': ['tug-of-war-asg']}])
+        time.sleep(5)
+except ClientError as e:
+    print(e)