Azure kubernetes service (aks)

1. Azure Kubernetes Service
(AKS)
Akash Agrawal | 09-11-2019

2. Agenda
● Containers Overview
● Kubernetes Overview
● Containerized Application deployment in Azure Cloud
● AKS Overview & Architecture
● Interacting with AKS
● AKS Features

3. About Me
● Having 11+ years of experience in IT Industry
● Previously I worked with various clients like Sabre Travel Technologies /
Citi Bank / Goldman Sachs / L&T Infotech etc.
● From last couple of years, I work as Independent Consultant:
○ I work with different startups helping them to design/improve their solutions
around Kubernetes & Cloud (as Technical Adviser / Architect)
○ Trainer around Cloud & Kubernetes Ecosystem
● Developer Community: https://www.meetup.com/Technology-Cafe-Bengaluru/

4. Containers Overview
● Kind of Sandbox
● Package your application & it’s dependencies (application dependencies)
● Built around Linux features like namespace, shared kernel etc.
● Container Runtimes: Docker, Rkt etc.

5. Docker Overview
● Docker is a open source platform for developers and sysadmins to
develop, deploy and run applications with containers (called containerized
applications)
● It works on the principle of Build/Ship/Run:
○ Build: Build Container Images on local Laptop or automate it through Continuous
Integration Pipeline
○ Ship: Ship Container Images through Container Registry e.g. DockerHub, DTR, GCR, ECR
etc.
○ Run: Run anywhere on Cloud/On-Prem etc.

6. Kubernetes Overview
● Kubernetes is an Open Source system for Container Orchestration
(Deployment/Management/Scaling)
● Focused around:
○ Scheduling
○ Scaling (Manual/Auto)
○ Self Healing / Auto Repairing

7. Kubernetes Flow
Source: https://software.danielwatrous.com/wp-content/uploads/2017/02/kubernetes-overview.png

8. Kubernetes Components
● Control Plane (Master Node) Components:
○ API Server
○ Scheduler
○ Controller Manager
○ Etcd
● Data Plane (Worker Node) Components:
○ Kubelet
○ Kube-Proxy
○ Others
■ Container Runtime

9. Kubernetes Components
Source: https://carltsuis-blog.readthedocs.io/en/latest/kubernetes/components-of-k8s.png

10. Kubernetes Resources/Objects
● Pods (Single & Multi-Container Pods)
● Controllers:
○ Deployment / Replication Controller / ReplicaSet
○ StatefulSet
○ DaemonSet
○ Job
○ …
● Services
○ ClusterIP/NodePort/Load Balancer
○ Headless Services

11. Kubernetes Resources/Objects
● Namespaces
● ConfigMap
● Secret

12. Kubernetes Resources/Objects
● Volumes (Kubernetes Volumes) & Volume Types/Plugins
● Persistent Volumes (PVs)
● Persistent Volume Claims (PVCs)
● Persistent Volume Types/Plugins
● Storage Classes

13. Containerized Application deployment in
Azure Cloud
● ACI
● AKS
● AKS-Engine

14. AKS Overview
● Managed Kubernetes Service (means it lets you quickly deploy and
manage kubernetes clusters in Azure)
● Kubernetes master nodes are managed by Azure, while worker nodes are
managed by Customers
● It reduces the Setup & Operational Complexity of Kubernetes for
Production workloads

15. AKS Cluster Architecture

16. Thinking about Production
● Applications:
○ Microservices based Applications
○ ML/DL Workloads
● Operations:
○ DevOps Process
● Developers

17. Interacting with AKS
● Azure Portal UI
● CLI:
○ Azure CLI
○ Azure Cloud Shell
● Template Driven Approach:
○ Azure Resource Manager (ARM) Templates
○ Terraform

18. Azure Dev Spaces
● Interactively develop, test & debug microservices in AKS
● Reduces the burden and complexity of collaborating with your team in a
shared AKS cluster
● Explore:
○ https://docs.microsoft.com/en-gb/azure/dev-spaces/

19. AKS Features
● Managed Kubernetes Control Plane
● Different Machine or Cluster Configurations:
○ Different Machine Configurations: CPU, Memory, Size, Type of Storage, OS etc
○ Node Pools
○ Accelerator Support like GPUs
○ Windows Server Containers (in preview)
● Workloads

20. AKS Features
● Identity, Access Control & Security:
○ Azure Active Directory
○ Kubernetes RBAC
○ Virtual Networks, Subnets
○ Kubernetes Version Upgrades, OS Security Patches
● Elasticity
○ Cluster/Node Pools Scaling (Out & In)
○ Application Scaling (Out & In)

21. AKS Features
● Monitoring & Logging
○ Azure Monitor
○ Azure Log Analytics
● Storage:
○ Azure Disks
○ Azure Files
● Kubernetes Conformant:
○ CNCF certified Kubernetes Conformant solution
● Regulatory Compliance:
○ Compliant with SOC, ISO, PCI DSS, HIPAA etc.

22. AKS Pricing
● AKS is free
● You only pay for cloud resources:
○ Worker nodes (not Master nodes)
○ Other cloud resources e.g. Load Balancers etc.

23. Akash Agrawal
LinkedIn : akash-agrawal-58a97813
Twitter : @akkiagrawal29
Thanks