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servers.yml
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servers.yml
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Parameters:
EnvironmentName:
Description: An environment name that will be prefixed to resource names
Type: String
InstanceImageId:
Type: String
InstanceTypeParameter:
Type: String
Resources:
ProfileWithRolesForOurApp:
Type: AWS::IAM::InstanceProfile
Properties:
Roles:
- UdacityS3ReadOnlyEC2
LBSecGroup:
Type: AWS::EC2::SecurityGroup
Properties:
GroupDescription: Allow http to our load balancer
VpcId:
Fn::ImportValue:
!Sub "${EnvironmentName}-VPCID"
SecurityGroupIngress:
- IpProtocol: tcp
FromPort: 80
ToPort: 80
CidrIp: 0.0.0.0/0
SecurityGroupEgress:
- IpProtocol: tcp
FromPort: 80
ToPort: 80
CidrIp: 0.0.0.0/0
WebServerSecGroup:
Type: AWS::EC2::SecurityGroup
Properties:
GroupDescription: Allow http to our hosts and SSH from local only
VpcId:
Fn::ImportValue:
!Sub "${EnvironmentName}-VPCID"
SecurityGroupIngress:
- IpProtocol: tcp
FromPort: 80
ToPort: 80
CidrIp: 0.0.0.0/0
- IpProtocol: tcp
FromPort: 22
ToPort: 22
CidrIp: 0.0.0.0/0
SecurityGroupEgress:
- IpProtocol: tcp
FromPort: 0
ToPort: 65535
CidrIp: 0.0.0.0/0
WebAppLaunchConfig:
Type: AWS::AutoScaling::LaunchConfiguration
Properties:
UserData:
Fn::Base64: !Sub |
#!/bin/bash
apt-get update -y
apt-get install apache2 -y
systemctl start apache2.service
cd /var/www/html
echo "Udacity Demo Web Server Up and Running!" > index.html
ImageId: !Ref InstanceImageId
SecurityGroups:
- Ref: WebServerSecGroup
InstanceType: !Ref InstanceTypeParameter
BlockDeviceMappings:
- DeviceName: "/dev/sdk"
Ebs:
VolumeSize: '10'
WebAppGroup:
Type: AWS::AutoScaling::AutoScalingGroup
Properties:
VPCZoneIdentifier:
- Fn::ImportValue:
!Sub "${EnvironmentName}-PRIV-NETS"
LaunchConfigurationName:
Ref: WebAppLaunchConfig
MinSize: '4'
MaxSize: '4'
TargetGroupARNs:
- Ref: WebAppTargetGroup
WebAppLB:
Type: AWS::ElasticLoadBalancingV2::LoadBalancer
Properties:
Subnets:
- Fn::ImportValue: !Sub "${EnvironmentName}-PUB1-SN"
- Fn::ImportValue: !Sub "${EnvironmentName}-PUB2-SN"
SecurityGroups:
- Ref: LBSecGroup
Listener:
Type: AWS::ElasticLoadBalancingV2::Listener
Properties:
DefaultActions:
- Type: forward
TargetGroupArn:
Ref: WebAppTargetGroup
LoadBalancerArn:
Ref: WebAppLB
Port: '80'
Protocol: HTTP
ALBListenerRule:
Type: AWS::ElasticLoadBalancingV2::ListenerRule
Properties:
Actions:
- Type: forward
TargetGroupArn: !Ref 'WebAppTargetGroup'
Conditions:
- Field: path-pattern
Values: [/]
ListenerArn: !Ref 'Listener'
Priority: 1
WebAppTargetGroup:
Type: AWS::ElasticLoadBalancingV2::TargetGroup
Properties:
HealthCheckIntervalSeconds: 10
HealthCheckPath: /
HealthCheckProtocol: HTTP
HealthCheckTimeoutSeconds: 8
HealthyThresholdCount: 2
Port: 80
Protocol: HTTP
UnhealthyThresholdCount: 5
VpcId:
Fn::ImportValue:
Fn::Sub: "${EnvironmentName}-VPCID"
Outputs:
WebAppLBDNSName:
Description: add http:// to LB DNS Name
Value: !Join ["", ["http://", !GetAtt WebAppLB.DNSName]]
Export:
Name: !Sub ${EnvironmentName}-LB-DNSName