Capstone project for Udacity's Cloud DevOps Engineer

• /api/v0/multiply
• Usage: http://localhost:5001/api/v0/multiply?param1=12&param2=2

• 📁 Folders
  • 📄 pipelines - Definitions of the pipeline used by Jenkins
  • 📄 descriptors-k8s - Descriptors to deploy application in the Kubernetes
  • 📄 images - Evidences of pipeline operation
• 📄 Dockerfile - Docker descriptor
• 📄 main.py - Web application
• 📄 requirements.txt - Definitions of dependencies of the application
• 📄 run_docker.sh - Script to build docker image

• Java
  • $ sudo apt-get update
  • $ sudo apt install -y default-jdk
• Jenkins
  • $ wget -q -O - https://pkg.jenkins.io/debian/jenkins-ci.org.key | sudo apt-key add -
  • $ sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'
  • $ sudo apt-get update
  • $ sudo apt-get install jenkins
  • $ sudo systemctl start jenkins
  • $ sudo systemctl enable jenkins
  • $ sudo systemctl status jenkins
• Jenkins Plugins
  • Blue Ocean
  • Pipeline: AWS Steps
  • CloudBees AWS Credentials
• Python and other tools
  • $ sudo apt install python3
  • $ sudo apt install python3-pip
  • $ sudo apt install virtualenv
  • $ sudo pip install pylint && pip install pylint --upgrade
  • $sudo cp /home//.local/bin/pylint /usr/local/bin
• Pip for Python
  • $ sudo apt install python-pip
• AWS Client V2.0
  • $ curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
  • $ unzip awscliv2.zip
  • $ sudo ./aws/install
• EKSCTL
  • $ curl --silent --location "https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C /tmp
  • $ sudo mv /tmp/eksctl /usr/local/bin
• AWS-IAM-Authenticator
  • $ curl -o aws-iam-authenticator https://amazon-eks.s3.us-west-2.amazonaws.com/1.15.10/2020-02-22/bin/linux/amd64/aws-iam-authenticator
  • $ chmod +x ./aws-iam-authenticator
  • $ sudo mv aws-iam-authenticator /usr/local/bin
• Docker Engine
  • $ sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
  • $ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
  • $ sudo apt-get update
  • $ sudo apt-get install docker-ce docker-ce-cli containerd.io
  • $ sudo chmod 777 /var/run/docker.sock
• Hadolint
  • $ wget https://github.com/hadolint/hadolint/releases/download/v1.1/hadolint_linux_amd64
  • $ sudo chmod +x hadolint_linux_amd64
  • $ sudo mv hadolint_linux_amd64 hadolint
  • $ sudo mv hadolint /usr/local/bin
• Kubectl
  • $ curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.18.0/bin/linux/amd64/kubectl
  • $ chmod +x ./kubectl
  • $ sudo mv ./kubectl /usr/local/bin/kubectl
• Shopfy/krane
  • $ sudo apt install ruby-full
  • $ sudo gem install rake
  • $ sudo gem install rainbow -v '2.2.2'
  • $ sudo gem install krane

1 - Connect to EC2 instance and execute the command below to create a cluster with 3 nodes. This command can to take about 15 minutes to finish. Be patient!
$ eksctl create cluster --name <cluster-name> --region <region> --nodegroup-name standard-workers --node-type t3.medium --nodes 3 --nodes-min 1 --nodes-max 4 --managed
Image from Gyazo

2 - Next, we need to update ̃/.kube/config file, so that you can use the kubectl command.
$ aws eks update-kubeconfig --name <cluster-name> --region <region>
Image from Gyazo

3 - Now, we let's get information of the cluster using kubectl command.
$ kubectl cluster-info
Image from Gyazo

4 - Finally, delete cluster.
$ eksctl delete cluster cluster --name <cluster-name> --region <region>
Image from Gyazo

...
spec:
 replicas: 2
 strategy:
 type: RollingUpdate
 rollingUpdate:
 maxUnavailable: 50%
 maxSurge: 1
...

• Getting started with EKSCTL - https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html
• Launch a guest book application - https://docs.aws.amazon.com/eks/latest/userguide/eks-guestbook.html
• Create a SSH Key - https://eksworkshop.com/prerequisites/sshkey.html
• Install Jenkins on Ubuntu - https://wiki.jenkins.io/display/JENKINS/Installing+Jenkins+on+Ubuntu
• How to Install Pip on Ubuntu 18.04 - https://linuxize.com/post/how-to-install-pip-on-ubuntu-18.04/
• Install Docker Engine on Ubuntu - https://docs.docker.com/engine/install/ubuntu/
• Installing aws-iam-authenticator - https://docs.aws.amazon.com/eks/latest/userguide/install-aws-iam-authenticator.html
• Install and Set Up kubectl - https://kubernetes.io/docs/tasks/tools/install-kubectl/
• Shopfy/krane - https://github.com/Shopify/krane
• Hadolint v1.1 - https://github.com/hadolint/hadolint/releases/tag/v1.1