MS Azure Kubernetes Service explaining containers and challenges
- 2. What is a container? Containers = operating system virtualization Traditional virtual machines = hardware virtualization OS Kernel Applications Container Container Container Hardware Hardware OS Application VM VM VM App OS App OS App OS
- 3. Virtualization versus containerization? Virtualization Containerization Type 1 Hardware Hypervisor 1 VM VM VM Hardware Type 2 Host OS Hypervisor 2 VM VM VM Virtual machine Guest OS Dependencies Application Hardware Host OS Docker Engine Dependency 1 Dependency 2 C C C C C Container App dependencies Application XYZ Image
- 4. How Container are Launched ?
- 5. Docker Docker is a Open-Source computer program that performs operating-system-level virtualization, also known as "containerization". It was first released in 2013 and is developed by Docker, Inc. Docker is used to run software packages called "containers". In a typical example use case, one container runs a web server and web application, while a second container runs a database server that is used by the web application. • Launched in March 2013 • Over 37 billion+ Downloads • Over 3,5million+ Docker-ized applications • 100+ Case Studies worldwide https://en.wikipedia.org/wiki/Docker_(software)
- 6. The benefits of using containers Agility Ship apps faster Portability Easily move workloads Rapid scale Scale easily to meet demand Density Achieve resource efficiency On-premises Cloud Anywhere Monolith Microservice Any app .Net Java Python Node Any language Linux Windows Any OS
- 7. Choice of developer tools and clients Azure Container Registry Docker Hub App Service Deploy web apps or APIs using containers in a PaaS environment Service Fabric Modernize .NET applications to microservices using Windows Server containers Kubernetes Service Container Instance Scale and orchestrate Linux containers using Kubernetes Ecosystem Bring your Partner solutions that run great on Azure Elastically burst from your Azure Kubernetes Service (AKS) cluster Containers in Azure
- 9. VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers VM Host Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Container Application Dependencies App code Environmental Variables Files Libraries Drivers Things can get complicated very quickly
- 10. Container Management at Scale Load Balancing: evenly distribute traffic Lifecycle and Health: keep containers running despite failure Cluster Management: deploy and manage cluster resources Scheduling: where containers run Naming and Discovery: where are my containers Logging and Monitoring: track what’s happening in containers and cluster Image repository: centralized, secure Docker container images Storage volumes: persistent data for containers Scaling: make sets of containers elastic in number Continuous Delivery: CI/CD pipeline and workflow At the end of the day we need something to help us with all the orchestration.. An orchestrator!
- 11. Kubernetes
- 12. k8s κυβερνήτης Most discussed repo in GitHub last year. Over 1,700 authors and releases every three month To learn more about the ideas behind Kubernetes: read the Large-scale cluster management at Google with Borg paper
- 14. Kubernetes Architecture Kubernetes control API server replication, namespace, serviceaccounts, etc. -controller- manager -scheduler etcd Master node Worker node kubelet kube-proxy Docker Prod Prod Containers Containers Worker node kubelet kube-proxy Docker Prod Prod Containers Containers Internet master components node components
- 15. Recap – K8s Components api-server controller-manager etcd scheduler kubelet kube-proxy docker dns master components node components
- 17. Kubernetes in Azure (AKS) Managed k8s service
- 18. Kubernetes on its own is not enough Unlock the agility for containerized applications using: • Infrastructure automation that simplifies provisioning, patching, and upgrading • Tools for containerized app development and CI/CD workflows • Services that support security, governance, and identity and access management Save time from infrastructure management and roll out updates faster without compromising security IDE container support Registry supporting Helm CI/CD Monitoring Microservice debugging Networking Virtual machines Security Governance Identity Source code repository <> Kubernetes Storage Data Infrastructure automation
- 19. Deploy, manage, and monitor Kubernetes with ease Scale applications on the fly Roll out new features seamlessly (CI/CD) Accelerate containerized app development Secure your environment with layers of isolation Ship-faster Focus on your containers not the infrastructure Extensible Modular, pluggable, hookable, composable Self-healing Auto-placement, auto-restart, auto-replication, auto-scaling
- 20. Azure Kubernetes Service (AKS) A fully managed Kubernetes cluster Managed Azure infrastructure services Container Runtime Engine Kubernetes Application architect Infrastructure architect Applications Operations
- 21. Managed Kubernetes Kubernetes control API server replication, namespace, serviceaccounts, etc. -controller- manager -scheduler etcd Master node Worker node kubelet kube-proxy Docker Pod Pod Containers Containers Worker node kubelet kube-proxy Docker Pod Pod Containers Containers Internet master components node components Azure managed control plane
- 22. API server Controller Manager Scheduler etcd Store Cloud Controller Self-managed master node(s) How managed Kubernetes on Azure works • Automated upgrades, patches • High reliability, availability • Easy, secure cluster scaling • Self-healing • API server monitoring • At no charge • Auto Scaling of Nodes Customer Worker Node VMs App/ workload definition User Docker Pods Docker Pods Docker Pods Docker Pods Docker Pods Schedule pods over private tunnel Kubernetes API endpoint Azure managed control plane Visible to the users/administrators
- 23. Deploy and manage Kubernetes with ease Task The old way With Azure Create a cluster Provision network and VMs Install dozens of system components including etcd Create and install certificates Register agent nodes with control plane az aks create Upgrade a cluster Upgrade your master nodes Cordon/drain and upgrade worker nodes individually az aks upgrade Scale a cluster Provision new VMs Install system components Register nodes with API server az aks scale Azure makes Kubernetes easy
- 24. Get started easily > az aks create > az aks install-cli > az aks get-credentials > kubectl get nodes Azure makes Kubernetes easy
- 25. Manage an AKS cluster > az aks list ➢ az aks upgrade ➢ az aks scale Azure makes Kubernetes easy
- 26. Cluster Upgrade Upgrade to version 1.11.4 $ az aks upgrade --name myAKSCluster --resource-group myResourceGroup -- kubernetes-version 1.11.4 • The Kubernetes community releases minor versions roughly every three months • AKS supports *4* minor versions of Kubernetes • The latest stable version upstream and the previous 3 • Each supported minor version also supports *2* stable patches. Azure makes Kubernetes easy
- 27. AKS – Portal Experience Azure Portal Experience
- 28. Azure Container Instances (ACI)
- 29. Increase agility with containers on demand Secure applications with isolation Run containers without managing servers Azure Container Instances (ACI) Easily run containers on Azure without managing servers
- 30. Release automation tools Simplifying the Kubernetes experience Streamlined Kubernetes development Event-driven scripting for Kubernetes The package manager for Kubernetes
- 31. helm.sh Looking for sample charts? Visit the Chart Directory at kubeapps.com to explore and use community charts. Helm
- 32. Resources AKS Workshop MS Learn – AKS Workshop AKS on GitHub AKS Issues and feature Tracking k8s on Azure Kubernetes on Azure AKS DevOps labs Deploying multi-container apps in AKS AKS Azure Kubernetes Services
- 33. Thank You