I have used terraform as an Infrastructure as code (IaC) tool to provision my infrasctructure on AWS. Provisioned infrastructure inlude; VPCs, EKS Clusters, Private and Public subnets, Iinternet Gateway, Routing Tables, SECURITY GROUP, etc.
This is the full configuration from https://www.terraform.io/docs/providers/aws/guides/eks-getting-started.html
See that guide for additional information.
NOTE: This full configuration utilizes the Terraform http provider to call out to icanhazip.com to determine your local workstation external IP for easily configuring EC2 Security Group access to the Kubernetes servers.
terraform init terraform plan terraform apply terraform destory
Jenkins will enable us to achieve Continuos Integration and Continuous Deployment. Our Jenkins pipeline-script will ensure once the application is developed or modified it is automatically build using maven, tested using selenium, validated using SonarQube. The build artifacts will be uploaded to Nexus Private aritifact repository.
#sudo apt update -y sudo apt install openjdk-8-jdk -y 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 -y sudo apt-get install jenkins -y sudo systemctl status jenkins sudo curl -fsSL get.docker.com | /bin/bash #Add jenkins user to docker group sudo usermod -aG docker jenkins #Restart jenkins to reflect docker permisions sudo systemctl restart jenkins #Use below commands if you want to switch to jenkins user. sudo -i -u jenkins sudo su -s /bin/bash jenkins
The scripts used for this project can be cloned from https://github.com/ajanidev/unity-project. I also configured a github-webhook so that once the source code is modified, Jenkins will trigger a build.
we are also using the created package (artifacts) to create a docker image for our application. Here, docker is used for containerisation.
docker build -t codestein/springboot-app .
This files will deploy a "Spring-boot-app" with a MongoDB. Our application and database is deployed using Replicat Set, ConFigMap, Ingress Controller, Secrets, PVC, StorageClass, HPA, and Cluster-Auto-Scaling. We have also deployed Grafana and Prometheus using Helm Charts. This will monitor our applications, send alerts and as such we are going to achieve high availability.
kubectl create deployment autoscaler-demo --image=nginx
kubectl get pods --all-namespaces | grep Running | wc -l
kubectl get nodes -o yaml | grep pods
kubectl scale deployment autoscaler-demo --replicas=20Maven is java based build tool to generate executable packages(jar, ear,war) for java based projects.
mvn clean packageDocker is a continerization tool.Using docker we can deploy our applications as containers using docker images. Containers contains application code and also the softwares, config files whatever is required for our application to run.
Create docker image using Dockerfile
docker build -t codestein/springboot-app .
kubectl apply -f springboot-app-deployment.yml
docker ps -a