Nilesh Gule @nileshgule | www.HandsOnArchitect.com Scaling .Net Core Containers with Azure Kubernetes Service and Serverless ACI 

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@nileshgule Containerize .Net Core App Build & publish Docker images to private Azure Container Registry (ACR) Autoscale using k8s K8s deployment, KEDA autoscaling, extending to serverless Azure Container Instences (ACI) Application Overview Docker Images Container Registries Kubernetes deployment Autoscaling with KEDA Serverless container with ACI Agenda 

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@nileshgule RabbitMQ Demo – Producer & Consumer 1000 (configurable) messages Batch of 50 (configurable) messages https://github.com/NileshGule/pd-tech-fest-2019 

@nileshgule Docker – main features Security Process isolation, resource limits Portability Runs across multiple env with Docker runtime Performance Smaller footprint than VM, lightning fast Multi-cloud Deploy Docker images to multi-cloud environments Isolation Isolates multiple versions of dependencies Agility Integrates into CI CD pipelines 

Demo build & publish docker images 

@nileshgule RabbitMQ Demo – Docker Images https://github.com/NileshGule/pd-tech-fest-2019  Docker multi-stage builds  Docker-compose, build & publish multiple images  Azure Container Registry (ACR) private registry 

@nileshgule RabbitMQ Demo –Docker Container Registry 

@nileshgule Kubernetes – main features Self healing Restart / Replace / kill containers based on heath checks Service discovery & LB Expose container using DNS name or IP Secrets & Config Mgt Manage sensitive info (pwd / Oauth tokens / SSH keys etc) Auto bin packing Fits containers to nodes based on resource limits Storage Orchestration Mount storage from local, public cloud oro ther sources Auto rollout & rollback Desired state configuration to manage rollouts & upgrades 

@nileshgule 

Demo deploy application containers 

@nileshgule RabbitMQ Demo – Kubernetes deployment https://github.com/NileshGule/pd-tech-fest-2019  Manifest files describe Deployment and Service  Helm charts to deploy third-party apps / services  Octant – visualize k8s cluster  Kubectl to deploy Manifest 

AKS Managed Identity (aksmqcluster-agentpool) nileshgule/techtalksmqproducer nileshgule/techtalksmqconsumer ngACRRegistry aksmqCluster ngacrregistry.azurecr.io/nileshgule /techtalksmqproducer ngacrregistry.azurecr.io/nileshgule/ techtalksmqconsumer Acr pull acrResourceGroup demo-kedaSeriesRG docker push using azure user token Acr login using AAD No need to use Admin user 

@nileshgule Kubernetes Scaling Options 1 2 3 Horizontal Pod Autoscaler Cluster Autoscaler Manual scaling 

KEDA Architecture 

Azure Event Hub Azure Service Bus Queues and Topics Azure Storage Queues Kafka Prometheus RabbitMQ Redis Lists Liiklus NATS AWS CloudWatch AWS Simple Queue Service GCP PubSub Integrates with Azure functions 

@nileshgule RabbitMQ Demo – KEDA Event driven autoscaling  RabbitMQ event source  KEDA autoscaler to scale consumer deployment 1000 (configurable) messages Batch of 50 (configurable) messages https://github.com/NileshGule/pd-tech-fest-2019 

Demo deploy KEDA on AKS cluster 

apiVersion: keda.k8s.io/v1alpha1 kind: ScaledObject metadata: name: rabbitmq-consumer namespace: default labels: deploymentName: rabbitmq-consumer-deployment spec: scaleTargetRef: deploymentName: rabbitmq-consumer pollingInterval: 5 # Optional. Default: 30 seconds cooldownPeriod: 30 # Optional. Default: 300 seconds minReplicaCount: 1 # Optional. Default: 0 maxReplicaCount: 30 # Optional. Default: 100 triggers: - type: rabbitmq metadata: queueName: hello queueLength : ‘5’ authenticationRef: name: trigger-auth-rabbitmq-host 

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Pros Cons 

Scale RabbitMQ Consumer with Virtual Node kedaVNet kedaAKSSubnet kedaVirtualNodeSubnet Producer - .Net Core API Consumers - .Net Core exe 

Demo extend KEDA with Virtual Node 

Summary • Self contained application with all its dependencies Docker • Orchestrates containers • Self healing • Service discovery • Scaling Kubernetes • Extends Kubernetes with event driven capabilities KEDA 

Play with Docker Play with Kubernetes Kubernetes Learning Path : MSLearn Linux Academy learning paths 

AKS cluster-autoscalar Virtual Node Horizontal pod autoscale virtual kubelet KEDA https://azure.microsoft.com/mediahandler/files/resourcefiles/kubernetes-learning- path/Kubernetes%20Learning%20Path%20version%201.0.pdf 

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Azure Kubernetes Service Workshop References 

https://github.com/NileshGule/pd-tech-fest-2019 

Thank you very much Code with Passion and Strive for Excellence https://www.slideshare.net/nileshgule/presentations https://speakerdeck.com/nileshgule/ 

Nilesh Gule ARCHITECT | MICROSOFT MVP “Code with Passion and Strive for Excellence” nileshgule @nileshgule Nilesh Gule NileshGule www.handsonarchitect.com 

Q&A