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import boto3
from botocore.exceptions import ClientError
region = 'eu-central-1'
availabilityZone = 'eu-central-1b'
imageId = 'ami-0cc293023f983ed53'
instanceType = 't3.nano'
keyName = 'srieger-pub'
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')
response = ec2Client.describe_security_groups(Filters=[{'Name': 'group-name', 'Values': ['tug-of-war']}])
security_group_id = response.get('SecurityGroups', [{}])[0].get('GroupId', '')
print("Getting DB IP...")
print("------------------------------------")
response = ec2Client.describe_instances(Filters=[{'Name': 'tag:tug-of-war', 'Values': ['db']}])
print(response)
reservations = response['Reservations']
for reservation in reservations:
for instance in reservation['Instances']:
if instance['State']['Name'] == "running" or instance['State']['Name'] == "pending":
instanceDB = ec2Resource.Instance(instance['InstanceId'])
privateIpDB = instanceDB.private_ip_address
userDataWebServer = ('#!/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 httpd php php-mysql\n'
'\n'
'service httpd start\n'
'service httpd start\n'
'\n'
# 'wget http://mmnet.informatik.hs-fulda.de/cloudcomp/tug-of-war-in-the-clouds.tar.gz\n'
# 'cp tug-of-war-in-the-clouds.tar.gz /var/www/html/\n'
# 'tar zxvf tug-of-war-in-the-clouds.tar.gz\n'
'cd /var/www/html\n'
'wget https://gogs.informatik.hs-fulda.de/srieger/cloud-computing-msc-ai-examples/raw/master/example-projects/tug-of-war-in-the-clouds/web-content/index.php\n'
'wget https://gogs.informatik.hs-fulda.de/srieger/cloud-computing-msc-ai-examples/raw/master/example-projects/tug-of-war-in-the-clouds/web-content/cloud.php\n'
'wget https://gogs.informatik.hs-fulda.de/srieger/cloud-computing-msc-ai-examples/raw/master/example-projects/tug-of-war-in-the-clouds/web-content/config.php\n'
'\n'
'# change hostname of db connection\n'
'sed -i s/localhost/' + privateIpDB + '/g /var/www/html/config.php\n'
)
for i in range(3, 4):
print("Running new Web Server instance...")
print("------------------------------------")
response = ec2Client.run_instances(
ImageId=imageId,
InstanceType=instanceType,
Placement={'AvailabilityZone': availabilityZone, },
KeyName=keyName,
MinCount=1,
MaxCount=1,
UserData=userDataWebServer,
SecurityGroupIds=[
security_group_id,
],
TagSpecifications=[
{
'ResourceType': 'instance',
'Tags': [
{'Key': 'Name', 'Value': 'tug-of-war-webserver' + str(i)},
{'Key': 'tug-of-war', 'Value': 'webserver'}
],
}
],
)
instanceIdWeb = response['Instances'][0]['InstanceId']
instance = ec2Resource.Instance(instanceIdWeb)
instance.wait_until_running()
instance.load()
print("tug-of-war-in-the-clouds can be accessed at: " + instance.public_ip_address)
try:
response = elbv2Client.describe_target_groups(Names=['tug-of-war-targetgroup'])
targetgroup_arn = response.get('TargetGroups', [{}])[0].get('TargetGroupArn', '')
except ClientError as e:
print(e)
print("Registering instance...")
print("------------------------------------")
response = elbv2Client.register_targets(
TargetGroupArn=targetgroup_arn,
Targets=[
{
'Id': instanceIdWeb,
},
],
)