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servers.yml
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servers.yml
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Description: >
Network configuration for clouddevops project 2
Parameters:
EnvironmentName:
Description: An environment name that will be prefixed to resource name
Type: String
InstanceType:
Description: Udagram EC2 instance type
Type: String
Default: t2.medium
ConstraintDescription: must be a valid EC2 instance type.
S3Bucket:
Description: The bucket where the code is available to download
Type: String
Resources:
S3BucketRole:
Type: AWS::IAM::Role
Properties:
Path: /
AssumeRolePolicyDocument:
Statement:
- Effect: Allow
Principal:
Service:
- ec2.amazonaws.com
Action:
- sts:AssumeRole
UdagramInstanceProfile:
Type: AWS::IAM::InstanceProfile
Properties:
Roles: [!Ref 'S3BucketRole']
ReadOnlyS3BucketsPolicy:
Type: AWS::IAM::Policy
Properties:
PolicyName: download-zipfile-from-s3bucket
PolicyDocument:
Statement:
- Effect: Allow
Action:
- s3:GetObject
Resource:
- !Sub 'arn:aws:s3:::${S3Bucket}/*'
Roles:
- !Ref 'S3BucketRole'
LBSecGroup:
Type: AWS::EC2::SecurityGroup
Properties:
GroupDescription: Allow http to our load balancer
VpcId:
Fn::ImportValue:
!Sub "${EnvironmentName}-VPCID"
SecurityGroupIngress:
- IpProtocol: tcp
FromPort: 80
ToPort: 80
CidrIp: 0.0.0.0/0
SecurityGroupEgress:
- IpProtocol: tcp
FromPort: 80
ToPort: 80
CidrIp: 0.0.0.0/0
WebServerSecGroup:
Type: AWS::EC2::SecurityGroup
Properties:
GroupDescription: Allow http to our hosts
VpcId:
Fn::ImportValue:
!Sub "${EnvironmentName}-VPCID"
SecurityGroupIngress:
- IpProtocol: tcp
FromPort: 80
ToPort: 80
CidrIp: 0.0.0.0/0
SecurityGroupEgress:
- IpProtocol: tcp
FromPort: 0
ToPort: 65535
CidrIp: 0.0.0.0/0
UdagramLaunchConfig:
Type: AWS::AutoScaling::LaunchConfiguration
Properties:
UserData:
Fn::Base64: !Sub |
#!/bin/bash
apt-get update -y
apt-get install unzip awscli -y
apt-get install apache2 -y
systemctl start apache2.service
cd /var/www/html
aws s3 cp s3://${S3Bucket}/udacity.zip .
unzip -o udacity.zip
rm udacity.zip
ImageId: ami-0d1cd67c26f5fca19
SecurityGroups: [!Ref 'WebServerSecGroup']
InstanceType: !Ref 'InstanceType'
IamInstanceProfile: !Ref 'UdagramInstanceProfile'
BlockDeviceMappings:
- DeviceName: "/dev/sdk"
Ebs:
VolumeSize: '10'
UdagramGroup:
Type: AWS::AutoScaling::AutoScalingGroup
Properties:
VPCZoneIdentifier:
- Fn::ImportValue: !Sub "${EnvironmentName}-PRIVATE-NETS"
LaunchConfigurationName:
Ref: UdagramLaunchConfig
MinSize: '4'
MaxSize: '8'
TargetGroupARNs: [!Ref 'UdagramTargetGroup']
UdagramScaleUpPolicy:
Type: AWS::AutoScaling::ScalingPolicy
Properties:
AdjustmentType: ChangeInCapacity
AutoScalingGroupName: !Ref 'UdagramGroup'
Cooldown: '60'
ScalingAdjustment: 1
UdagramScaleDownPolicy:
Type: AWS::AutoScaling::ScalingPolicy
Properties:
AdjustmentType: ChangeInCapacity
AutoScalingGroupName: !Ref 'UdagramGroup'
Cooldown: '60'
ScalingAdjustment: -1
UdagramTargetGroup:
Type: AWS::ElasticLoadBalancingV2::TargetGroup
Properties:
HealthCheckIntervalSeconds: 15
HealthCheckPath: /
HealthCheckProtocol: HTTP
HealthCheckTimeoutSeconds: 8
HealthyThresholdCount: 2
Port: 80
Protocol: HTTP
UnhealthyThresholdCount: 5
VpcId:
Fn::ImportValue:
Fn::Sub: "${EnvironmentName}-VPCID"
UdagramLB:
Type: AWS::ElasticLoadBalancingV2::LoadBalancer
Properties:
Subnets:
- Fn::ImportValue: !Sub "${EnvironmentName}-PUBLIC1-SN"
- Fn::ImportValue: !Sub "${EnvironmentName}-PUBLIC2-SN"
SecurityGroups: [!Ref 'LBSecGroup']
Listener:
Type: AWS::ElasticLoadBalancingV2::Listener
Properties:
DefaultActions:
- Type: forward
TargetGroupArn: !Ref 'UdagramTargetGroup'
LoadBalancerArn: !Ref 'UdagramLB'
Port: '80'
Protocol: HTTP
ALBListenerRule:
Type: AWS::ElasticLoadBalancingV2::ListenerRule
Properties:
Actions:
- Type: forward
TargetGroupArn: !Ref 'UdagramTargetGroup'
Conditions:
- Field: path-pattern
Values: [/]
ListenerArn: !Ref 'Listener'
Priority: 1
Outputs:
UdagramUrl:
Description: Use the following URL in order to access Udagram
Value: !Join ['', ['http://', !GetAtt [UdagramLB, DNSName]]]
Export:
Name: !Sub "${EnvironmentName}-UdagramURL"