Kubernetes Series 20/Oct/2019

Running Docker and K8S Workloads on Cloud (AWS and Azure)

Docker

Docker in Azure

• Azure Container Registry:

  • This is Docker Registry on Azure Cloud

  • Creating the Registry From Portal

  • Creating the Registry From CLI

  • Other References

• Azure Container Services: No longer supported by Microsoft
• Azure App Services:
  • Developer will write code and we will have Dockerfile per Application/Service
  • You can Deploy applications in Azure App Services from Dockerfiles

Docker in AWS

• Elastic Container Services (ECS):
  • EC2 Machine Based:
    • Create a ec2 machine with particular ami
    • You can group ec2 machines with that image to a cluster
    • Create Task Definition with Docker Commands
    • These tasks can be executed as servcies
    • Paying bill for ec2 machines
  • Fargate:
    • Paying only for containers which you are running.
• Elastic Container Registry (ECR):
• Elastic BeanStalk

Kubernetes on Cloud

• Kubernetes has master and worker nodes.
• Cloud providers offerings such as AKS/EKS/GKE
  • master nodes are managed by Cloud provider
  • Authentications integrated with cloud authentications (AWS => IAM, Azure => AAD)
  • Monitoring and logging integrated with Cloud Solutions
  • Cloud provider storage options

Azure Kubernetes Services (AKS)

Creating AKS Cluster

• Portal
• CLI

Amazon Elastic Kubernetes Services (EKS)

Storage

• Even in the case of k8s we want the container lifecycle to be separated from Storage/Volume Life cycle

• K8s has majorly the following options

  • Volumes
  • Persistent Volumes

• Refer here for AKS

Docker & Kubernetes DevOps Workflow.

Important Activities

• Ansible
• Jenkins to AKS
• Persistent Volumes Azure Disk
• Azure AKS Tutorial

Exercise

• Create a Game of life Deployment with autoscaling enabled for pods if cpu utilization is greater that 80%. Tomcat webapps or logs folder should be persisted. Ensure your are storing docker image in DockerHub or ACR or ECR

• Create a Game of life Docker Container which takes service ip address as input while running the container. Prove this on Kubernetes

• How to Submit Exercise?

  • Write a mail to qtdevops@gmail.com with your git hub repository containing the YAML and Dockerfiles. You can also use attachments.
  • In the mail enter your gmail id & you will have a hangout call.