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committedSep 17, 2020
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‎CloudFormation/amazon-eks-nodegroup-params.json

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[
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{
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"ParameterKey": "EnvironmentName",
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"ParameterValue": "UdacityCapstoneProject"
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},
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{
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"ParameterKey": "KeyPairName",
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"ParameterValue": "custom-key-pair"
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},
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{
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"ParameterKey": "DesiredInstances",
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"ParameterValue": "3"
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},
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{
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"ParameterKey": "ImageID",
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"ParameterValue": "ami-0d1cd67c26f5fca19"
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},
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{
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"ParameterKey": "MinSize",
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"ParameterValue": "1"
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},
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{
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"ParameterKey": "MaxSize",
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"ParameterValue": "4"
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}
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]

‎CloudFormation/amazon-eks-nodegroup.yml

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Description: >
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Arnab / Udacity Cloud DevOps
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Capstone project for Cloud DevOps Nanodegree Program
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Parameters:
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EnvironmentName:
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Description: An Environment name that will be prefixed to resources
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Type: String
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ImageID:
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Description: An image ID for EC2 Instance
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Type: String
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KeyPairName:
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Description: The EC2 Key Pair to allow SSH access to the instances
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Type: AWS::EC2::KeyPair::KeyName
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DesiredInstances:
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Description: How many instances should be created.
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Type: Number
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MinSize:
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Description: Minimum number of web application servers
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Type: String
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MaxSize:
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Description: Maximum number of web application servers
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Type: String
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Resources:
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InstanceProfile:
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Type: AWS::IAM::InstanceProfile
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Properties:
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Path: "/"
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Roles:
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- !Ref InstanceRole
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InstanceRole:
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Type: AWS::IAM::Role
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Properties:
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AssumeRolePolicyDocument:
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Version: "2012-10-17"
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Statement:
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- Effect: Allow
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Principal:
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Service:
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- ec2.amazonaws.com
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Action:
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- sts:AssumeRole
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Path: "/"
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ManagedPolicyArns:
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- arn:aws:iam::aws:policy/AmazonEKSWorkerNodePolicy
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- arn:aws:iam::aws:policy/AmazonEKS_CNI_Policy
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- arn:aws:iam::aws:policy/AmazonEC2ContainerRegistryReadOnly
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NodesSecurityGroup:
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Type: AWS::EC2::SecurityGroup
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Properties:
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GroupDescription: Security group for the nodes.
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VpcId:
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Fn::ImportValue: !Sub "${EnvironmentName}-VPCID"
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SecurityGroupIngress:
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- IpProtocol: tcp
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FromPort: 0
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ToPort: 65535
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CidrIp: 0.0.0.0/0
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- IpProtocol: tcp
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FromPort: 1025
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ToPort: 65535
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CidrIp: 0.0.0.0/0
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- IpProtocol: tcp
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FromPort: 443
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ToPort: 443
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CidrIp: 0.0.0.0/0
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SecurityGroupEgress:
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- IpProtocol: tcp
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FromPort: 0
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ToPort: 65535
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CidrIp: 0.0.0.0/0
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- IpProtocol: tcp
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FromPort: 1025
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ToPort: 65535
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CidrIp: 0.0.0.0/0
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- IpProtocol: tcp
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FromPort: 443
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ToPort: 443
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CidrIp: 0.0.0.0/0
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Tags:
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- Key: !Sub
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- "kubernetes.io/cluster/${EksId}"
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- EksId:
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Fn::ImportValue: !Sub "${EnvironmentName}-EKS"
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Value: "owned"
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NodesAutoScalingGroup:
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Type: AWS::AutoScaling::AutoScalingGroup
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Properties:
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DesiredCapacity: !Sub ${DesiredInstances}
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LaunchConfigurationName: !Ref LaunchConfiguration
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MinSize: !Ref MinSize
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MaxSize: !Ref MaxSize
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VPCZoneIdentifier:
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Fn::Split:
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- ","
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- Fn::ImportValue:
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Fn::Sub: ${EnvironmentName}-PUB-NETS
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Tags:
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- Key: Name
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Value: !Sub
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- "${EksId}-CapstoneNodesGroup-Node"
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- EksId:
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Fn::ImportValue: !Sub "${EnvironmentName}-EKS"
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PropagateAtLaunch: "true"
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- Key: !Sub
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- "kubernetes.io/cluster/${EksId}"
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- EksId:
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Fn::ImportValue: !Sub "${EnvironmentName}-EKS"
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Value: "owned"
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PropagateAtLaunch: "true"
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UpdatePolicy:
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AutoScalingRollingUpdate:
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MaxBatchSize: "1"
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MinInstancesInService: 3
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PauseTime: "PT5M"
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LaunchConfiguration:
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Type: AWS::AutoScaling::LaunchConfiguration
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Properties:
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AssociatePublicIpAddress: "true"
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IamInstanceProfile: !Ref InstanceProfile
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ImageId: !Ref ImageID
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InstanceType: t2.medium
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KeyName: !Ref KeyPairName
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SecurityGroups:
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- !Ref NodesSecurityGroup
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BlockDeviceMappings:
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- DeviceName: /dev/xvda
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Ebs:
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VolumeSize: 10
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VolumeType: gp2
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DeleteOnTermination: true
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UserData:
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Fn::Base64: !Sub
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- |
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#!/bin/bash
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set -o xtrace
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/etc/eks/bootstrap.sh ${EksId}
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/opt/aws/bin/cfn-signal --exit-code $? \
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--stack ${AWS::StackName} \
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--resource NodesAutoScalingGroup \
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--region ${AWS::Region}
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- EksId:
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Fn::ImportValue: !Sub "${EnvironmentName}-EKS"
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Outputs:
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InstanceRole:
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Description: The node instance role
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Value: !GetAtt InstanceRole.Arn
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Export:
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Name: !Sub ${EnvironmentName}-IR
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NodesSecurityGroup:
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Description: The security group for the nodes.
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Value: !Ref NodesSecurityGroup
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Export:
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Name: !Sub ${EnvironmentName}-NSG

‎CloudFormation/aws-auth-cm.yaml

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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: aws-auth
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namespace: kube-system
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data:
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mapRoles: |
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- rolearn: arn:aws:iam::988212813982:role/nodegroup-InstanceRole-1NRDD0R220DDT
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username: system:node:{{EC2PrivateDNSName}}
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groups:
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- system:bootstrappers
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- system:nodes

‎CloudFormation/eks-cluster-params.json

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[
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{
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"ParameterKey": "EnvironmentName",
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"ParameterValue": "UdacityCapstoneProject"
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}
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]

‎CloudFormation/eks-cluster.yml

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Description: >
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Arnab / Udacity Cloud DevOps
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Capstone project for Cloud DevOps Nanodegree Program
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5+
Parameters:
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EnvironmentName:
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Description: An Environment name that will be prefixed to resources
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Type: String
9+
10+
Resources:
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ClusterInstanceProfile:
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Type: AWS::IAM::InstanceProfile
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Properties:
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Path: "/"
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Roles:
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- !Ref ClusterRole
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ClusterRole:
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Type: AWS::IAM::Role
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Properties:
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AssumeRolePolicyDocument:
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Version: "2012-10-17"
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Statement:
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- Effect: Allow
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Principal:
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Service:
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- eks.amazonaws.com
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Action:
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- sts:AssumeRole
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Path: "/"
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ManagedPolicyArns:
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- arn:aws:iam::aws:policy/AmazonEKSClusterPolicy
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- arn:aws:iam::aws:policy/AmazonEKSServicePolicy
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- arn:aws:iam::aws:policy/ElasticLoadBalancingFullAccess
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CapstoneEKS:
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Type: AWS::EKS::Cluster
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Properties:
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Version: "1.13"
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RoleArn: !GetAtt ClusterRole.Arn
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ResourcesVpcConfig:
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SecurityGroupIds:
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- Fn::ImportValue: !Sub "${EnvironmentName}-SCG"
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SubnetIds:
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Fn::Split:
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- ","
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- Fn::ImportValue:
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Fn::Sub: ${EnvironmentName}-PUB-NETS
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Outputs:
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EksId:
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Description: The EKS id.
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Value: !Ref CapstoneEKS
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Export:
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Name: !Sub ${EnvironmentName}-EKS
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EKSRoleArn:
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Description: The role that Amazon EKS will use to create AWS resources for Kubernetes clusters
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Value: !GetAtt ClusterRole.Arn
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Export:
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Name: !Sub "${EnvironmentName}-EKSRoleArn"

‎CloudFormation/network-params.json

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[
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{
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"ParameterKey": "EnvironmentName",
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"ParameterValue": "UdacityCapstoneProject"
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},
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{
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"ParameterKey": "VpcCIDR",
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"ParameterValue": "192.168.0.0/16"
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},
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{
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"ParameterKey": "PublicSubnet1CIDR",
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"ParameterValue": "192.168.64.0/18"
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},
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{
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"ParameterKey": "PublicSubnet2CIDR",
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"ParameterValue": "192.168.128.0/18"
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},
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{
19+
"ParameterKey": "PublicSubnet3CIDR",
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"ParameterValue": "192.168.192.0/18"
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}
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]

‎CloudFormation/network.yml

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Description: >
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Arnab / Udacity Cloud DevOps
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Capstone project for Cloud DevOps Nanodegree Program
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5+
Parameters:
6+
EnvironmentName:
7+
Description: An environment name that will be prefixed to resource names
8+
Type: String
9+
10+
VpcCIDR:
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Description: Please enter the IP range (CIDR notation) for this VPC
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Type: String
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Default: 192.168.0.0/16
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15+
PublicSubnet1CIDR:
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Description: Please enter the IP range (CIDR notation) for the public subnet in the first Availability Zone
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Type: String
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Default: 192.168.0.0/16
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PublicSubnet2CIDR:
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Description: Please enter the IP range (CIDR notation) for the public subnet in the second Availability Zone
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Type: String
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Default: 192.168.128.0/18
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PublicSubnet3CIDR:
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Description: Please enter the IP range (CIDR notation) for the public subnet in the second Availability Zone
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Type: String
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Default: 192.168.192.0/18
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Resources:
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VPC:
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Type: AWS::EC2::VPC
33+
Properties:
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CidrBlock: !Ref VpcCIDR
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EnableDnsHostnames: true
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Tags:
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- Key: Name
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Value: !Ref EnvironmentName
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InternetGateway:
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Type: AWS::EC2::InternetGateway
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Properties:
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Tags:
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- Key: Name
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Value: !Ref EnvironmentName
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InternetGatewayAttachment:
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Type: AWS::EC2::VPCGatewayAttachment
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Properties:
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InternetGatewayId: !Ref InternetGateway
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VpcId: !Ref VPC
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PublicSubnet1:
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Type: AWS::EC2::Subnet
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Properties:
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MapPublicIpOnLaunch: true
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VpcId: !Ref VPC
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AvailabilityZone: !Select [0, !GetAZs ""]
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CidrBlock: !Ref PublicSubnet1CIDR
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MapPublicIpOnLaunch: true
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Tags:
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- Key: Name
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Value: !Sub ${EnvironmentName} Public Subnet (AZ1)
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PublicSubnet2:
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Type: AWS::EC2::Subnet
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Properties:
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MapPublicIpOnLaunch: true
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VpcId: !Ref VPC
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AvailabilityZone: !Select [1, !GetAZs ""]
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CidrBlock: !Ref PublicSubnet2CIDR
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MapPublicIpOnLaunch: true
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Tags:
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- Key: Name
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Value: !Sub ${EnvironmentName} Public Subnet (AZ2)
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PublicSubnet3:
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Type: AWS::EC2::Subnet
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Properties:
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MapPublicIpOnLaunch: true
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VpcId: !Ref VPC
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AvailabilityZone: !Select [2, !GetAZs ""]
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CidrBlock: !Ref PublicSubnet3CIDR
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MapPublicIpOnLaunch: true
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Tags:
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- Key: Name
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Value: !Sub ${EnvironmentName} Public Subnet (AZ3)
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PublicRouteTable:
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Type: AWS::EC2::RouteTable
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Properties:
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VpcId: !Ref VPC
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Tags:
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- Key: Name
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Value: !Sub ${EnvironmentName} Public Routes
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DefaultPublicRoute:
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Type: AWS::EC2::Route
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DependsOn: InternetGatewayAttachment
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Properties:
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RouteTableId: !Ref PublicRouteTable
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DestinationCidrBlock: 0.0.0.0/0
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GatewayId: !Ref InternetGateway
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PublicSubnet1RouteTableAssociation:
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Type: AWS::EC2::SubnetRouteTableAssociation
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Properties:
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RouteTableId: !Ref PublicRouteTable
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SubnetId: !Ref PublicSubnet1
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PublicSubnet2RouteTableAssociation:
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Type: AWS::EC2::SubnetRouteTableAssociation
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Properties:
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RouteTableId: !Ref PublicRouteTable
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SubnetId: !Ref PublicSubnet2
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PublicSubnet3RouteTableAssociation:
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Type: AWS::EC2::SubnetRouteTableAssociation
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Properties:
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RouteTableId: !Ref PublicRouteTable
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SubnetId: !Ref PublicSubnet3
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DefaultSecurityGroup:
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Type: AWS::EC2::SecurityGroup
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Properties:
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VpcId: !Ref VPC
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GroupDescription: Default security group for EKS.
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SecurityGroupIngress:
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- IpProtocol: tcp
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FromPort: 1025
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ToPort: 65535
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CidrIp: 0.0.0.0/0
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- IpProtocol: tcp
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FromPort: 443
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ToPort: 443
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CidrIp: 0.0.0.0/0
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SecurityGroupEgress:
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- IpProtocol: tcp
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FromPort: 1025
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ToPort: 65535
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CidrIp: 0.0.0.0/0
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Outputs:
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VPC:
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Description: A reference to the created VPC
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Value: !Ref VPC
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Export:
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Name: !Sub ${EnvironmentName}-VPCID
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150+
VPCPublicRouteTable:
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Description: Public Routing
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Value: !Ref PublicRouteTable
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Export:
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Name: !Sub ${EnvironmentName}-PUB-RT
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PublicSubnets:
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Description: A list of the public subnets
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Value:
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!Join [",", [!Ref PublicSubnet1, !Ref PublicSubnet2, !Ref PublicSubnet3]]
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Export:
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Name: !Sub ${EnvironmentName}-PUB-NETS
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SecurityGroup:
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Description: Cluster security group.
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Value: !Ref DefaultSecurityGroup
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Export:
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Name: !Sub ${EnvironmentName}-SCG
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PublicSubnet1:
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Description: A reference to the public subnet in the 1st Availability Zone
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Value: !Ref PublicSubnet1
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Export:
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Name: !Sub ${EnvironmentName}-PUB1-SN
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PublicSubnet2:
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Description: A reference to the public subnet in the 2nd Availability Zone
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Value: !Ref PublicSubnet2
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Export:
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Name: !Sub ${EnvironmentName}-PUB2-SN
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PublicSubnet3:
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Description: A reference to the public subnet in the 2nd Availability Zone
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Value: !Ref PublicSubnet2
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Export:
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Name: !Sub ${EnvironmentName}-PUB3-SN

‎Dockerfile

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FROM nginx:latest
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# Copy source code to working directory
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COPY index.html /usr/share/nginx/html
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# Expose port 80
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EXPOSE 80

‎Jenkinsfile

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pipeline {
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agent any
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stages {
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stage('Build') {
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steps {
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sh 'echo Building...'
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}
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}
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stage('Lint HTML') {
10+
steps {
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sh 'tidy -q -e *.html'
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}
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}
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stage('Build Docker Image') {
15+
steps {
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sh 'docker build -t udacity-cloud-devops-capstone .'
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}
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}
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stage('Push Docker Image') {
20+
steps {
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withDockerRegistry([url: "", credentialsId: "docker-hub"]) {
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sh "docker tag udacity-cloud-devops-capstone mydocker49/udacity-cloud-devops-capstone"
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sh 'docker push mydocker49/udacity-cloud-devops-capstone'
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}
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}
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}
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stage('Deploying') {
28+
steps{
29+
echo 'Deploying to AWS...'
30+
withAWS(credentials: 'aws', region: 'ap-south-1') {
31+
sh "aws eks --region ap-south-1 update-kubeconfig --name jenkinscapstone"
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sh "kubectl config use-context arn:aws:eks:ap-south-1:527375347403:cluster/jenkinscapstone"
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sh "kubectl set image deployments/udacity-cloud-devops-capstone udacity-cloud-devops-capstone=mydocker49/udacity-cloud-devops-capstone:latest"
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sh "kubectl apply -f deployment/deployment.yml"
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sh "kubectl get nodes"
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sh "kubectl get deployment"
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sh "kubectl get pod -o wide"
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sh "kubectl get service/udacity-cloud-devops-capstone"
39+
}
40+
}
41+
}
42+
stage("Cleaning up") {
43+
steps{
44+
echo 'Cleaning up...'
45+
sh "docker system prune"
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}
47+
}
48+
}
49+
}

‎Makefile

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## The Makefile includes instructions on running the commands
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# create stack
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# update stack
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# delete stack
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# Dockerfile should pass hadolint
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# index.html should pass lint
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# (Optional) Build a simple integration test
8+
9+
docker-build: docker build --tag=udacity-capstone-app .
10+
11+
# docker-upload:
12+
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# run-kube:
14+
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lint:
16+
# See local hadolint install instructions: https://github.com/hadolint/hadolint
17+
# This is linter for Dockerfiles
18+
hadolint Dockerfile
19+
# This is a linter for Python source code linter: https://www.pylint.org/
20+
# This should be run from inside a virtualenv
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# pylint --disable=R,C,W1203 app.py
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23+
all: install lint test

‎README.md

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# udacity-cloud-devops-capstone
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3+
<h2>Project Overview</h2>
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<p> In this project, I applied the skills and knowledge which was developed throughout the Cloud DevOps Nanodegree program. These include:</p>
6+
7+
<ul>
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<li>Working in AWS</li>
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<li>Using Jenkins to implement Continuous Integration and Continuous Deployment</li>
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<li>Building pipelines</li>
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<li>Working with Ansible and CloudFormation to deploy clusters</li>
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<li>Building Kubernetes clusters</li>
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<li>Building Docker containers in pipelines</li>
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</ul>
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16+
***
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18+
<p>I developed a CI/CD pipeline for microservices applications with rolling deployment. I developed Continuous Integration steps, such as typographical checking (aka “linting”). I also developed Contiguous Deployment steps. These includes:</p>
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<ul>
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<li>Pushing the built Docker containers to the Docker repository</li>
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<li>Deploying these Docker containers to a small Kubernetes cluster. For Kubernetes cluster I used AWS EKS. To deploy my Kubernetes cluster using Cloudformation. I ran these from Jenkins as an independent pipeline.</li>
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</ul>
24+
25+
***
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27+
<h2>Environment Setup</h2>
28+
29+
<ul>
30+
<li>Create a <code>Makefile</code></li>
31+
<li>Create a <code>Dockerfile</code></li>
32+
<li>Create a <code>Jenkinsfile</code> including all the necessary steps</li>
33+
<li>Create CloudFormation Script using <code>create-stack.sh</code> command</li>
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<li>Install Jenkins and all the necessary plugins in the EC2 Instance</li>
35+
</ul>
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37+
<h2>Linting App</h2>
38+
39+
<ul>
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<li>Run <code>make lint</code> to lint the app locally</li>
41+
</ul>
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<h2>Running App</h2>
44+
45+
<ul>
46+
<li>Run Docker: <code>./run_docker.sh</code></li>
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<li>Run Kubernetes: <code>./run_kubernetes.sh</code></li>
48+
</ul>
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50+
<h2>Uploading to the Docker Hub</h2>
51+
52+
<ul>
53+
<li>Run <code>./upload_docker.sh</code> to upload the api to the Docker Hub</li>
54+
</ul>
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<h2>Deploying App to AWS</h2>
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58+
<pre>
59+
<code>
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aws eks --region ap-south-1 update-kubeconfig --name EKS-Name
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kubectl apply -f aws/aws-auth-cm.yaml
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kubectl apply -f deployment/deployment.yml
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kubectl get nodes
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kubectl get pods -o wide
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</code>
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</pre>
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<h2>Cleaning App</h2>
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<ul>
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<li>Run <code>docker system prune</code> to clean up </li>
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</ul>

‎deployment/deployment.yml

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apiVersion: apps/v1
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kind: Deployment
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metadata:
4+
name: udacity-cloud-devops-capstone
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labels:
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app: udacity-cloud-devops-capstone
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namespace: default
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spec:
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replicas: 3
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selector:
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matchLabels:
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app: udacity-cloud-devops-capstone
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strategy:
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rollingUpdate:
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maxSurge: 25%
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maxUnavailable: 25%
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type: RollingUpdate
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template:
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metadata:
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labels:
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app: udacity-cloud-devops-capstone
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spec:
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containers:
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- image: mydocker49/udacity-cloud-devops-capstone
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imagePullPolicy: Always
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name: udacity-cloud-devops-capstone
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ports:
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- containerPort: 80
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---
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apiVersion: v1
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kind: Service
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metadata:
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name: udacity-cloud-devops-capstone
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labels:
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app: udacity-cloud-devops-capstone
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spec:
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type: LoadBalancer
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selector:
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app: udacity-cloud-devops-capstone
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ports:
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- port: 80
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targetPort: 80
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nodePort: 30000
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protocol: TCP

‎deployment/load-balancer.yml

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apiVersion: v1
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kind: Service
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metadata:
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name: udacity-cloud-devops-capstone
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labels:
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app: udacity-cloud-devops-capstone
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spec:
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type: LoadBalancer
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selector:
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app: udacity-cloud-devops-capstone
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ports:
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- port: 80
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targetPort: 80

‎index.html

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<!DOCTYPE html>
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<html lang="en">
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4+
<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<title>Welcome to my Capstone<title>
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</head>
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<body>
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Hello, Welcome to Arnab's udacity cloud devops capstone project! 🚀
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</body>
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</html>

‎scripts/create-kubeconfig.sh

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aws eks \
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--region ap-south-1 \
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update-kubeconfig \
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--name $1 \

‎scripts/create-stack.sh

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aws cloudformation create-stack \
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--stack-name $1 \
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--template-body file://$2 \
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--parameters file://$3 \
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--region ap-south-1 \
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--capabilities CAPABILITY_NAMED_IAM

‎scripts/delete-stack.sh

+2
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@@ -0,0 +1,2 @@
1+
aws cloudformation delete-stack \
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--stack-name $1

‎scripts/run-docker.sh

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@@ -0,0 +1,15 @@
1+
#!/usr/bin/env bash
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3+
## Complete the following steps to get Docker running locally
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5+
# Step 1:
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# Build image and add a descriptive tag
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docker build -t udacity-capstone-app .
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# Step 2:
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# List docker images
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docker images
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# Step 3:
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# Run app
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docker run -p 80:80 udacity-capstone-app

‎scripts/run-kubernetes.sh

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1+
#!/usr/bin/env bash
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3+
# This tags and uploads an image to Docker Hub
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5+
# Step 1:
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# This is your Docker ID/path
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dockerpath="mydocker49/udacity-capstone-app"
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# Step 2
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# Run the Docker Hub container with kubernetes
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kubectl run udacity-capstone-app --image=$dockerpath --port=80
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# Step 3:
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# List kubernetes pods
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kubectl get pods
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# Step 4:
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# Forward the container port to a host
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kubectl expose deployment udacity-capstone-app --type=LoadBalancer --port=80
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# Open the service
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# minikube service udacity-capstone-app

‎scripts/update-stack.sh

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@@ -0,0 +1,6 @@
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aws cloudformation update-stack \
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--stack-name $1 \
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--template-body file://$2 \
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--parameters file://$3 \
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--region ap-south-1 \
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--capabilities CAPABILITY_NAMED_IAM

‎scripts/upload-docker.sh

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@@ -0,0 +1,20 @@
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#!/usr/bin/env bash
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# This file tags and uploads an image to Docker Hub
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4+
# Assumes that an image is built via `run_docker.sh`
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# Step 1:
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# Create dockerpath
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dockerpath="mydocker49/udacity-capstone-app"
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# Step 2:
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# Authenticate & tag
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docker login --username "mydocker49" &&\
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docker image tag cloudDevops-capstone $dockerpath
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echo "Docker ID and Image: $dockerpath"
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# Step 3:
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# Push image to a docker repository
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docker image push $dockerpath

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