devops, microservices, and azure container service

Microsoft Developer Conference A Container Journey

David Tesar Senior Technical Evangelist@dtzar

March, 2017 | Cairo, Egypt

Extreme Sport Christians – Monolith Architecture (on PaaS)

SQL Azure

Microsoft Azure

Azure App Services WebsiteApp Insights

Internet

.NET 4.6 front-end code with tight-couplingto out of box InstantForum product

The Monolithic Application

Pros

Simple at firstIn-process latenciesSingle codebase, deploy unitResource-efficient at small scale

Cons

Complex to understandDifficult to TestCoordination overhead as team growsDevOps Practices harder to implementPoor scaling (vertical only)All-or-nothing deploy (downtime, failures)Long build timesLonger / Harder to update

Microservices Design Pattern

A

C D EBC

BA E

F

GD

Microservices

API-Auth

API-User

API-Comms

API-Tags

Action Sports Community - Architecture

DocDB

Mobile Apps React.JS / Cordova iOS/Android/Windows

User CollectionComms CollectionAuth CollectionTags Collection

Node.JSExpressSwagger

Microsoft Azure

React.JS Website

APIGatewa

y

Internet

Microservices on top ACS+K8s

MongoContain

er

MongoContain

er

Container

ContainersHow do they differ from virtual machines?Dependencies: Each virtualized app includes the app itself, required binaries and libraries and a guest OS, which may consist of multiple GB of dataIndependent OS: Each VM can have a different OS from other VMs, along with a different OS to the host itselfFlexible: VMs can be migrated to other hosts to balance resource usage and for host maintenance without downtime

Secure: High levels of resource and security isolation for key virtualized workloads

App A

Host OSw/Container

support

Server / Hypervisor

Bins/libraries

Container

Bins/libraries

App B

Virtual Machine

Host OSw/Container

support

SemanticsWhat’s the difference between a Docker File, Image and Container?

Docker File: Defines source image and commands to execute to build a Docker ImageCreates image to build… ‘docker build’

Docker Image: Images are stored in a registry and are a immutable copy of the applicationCreates instance of image… ‘docker run’

Docker Container: This is the running instance of a Docker Image

Lists running instances… ‘docker ps’

Demo

Docker Fundamentals withAction Sports Community Front-End React.JS & API-Comms Microservice

React.JS Website

API-Comms

DevOps Practices with VSTS + Azure

Local Dev

Source Repo

Build Docker Image

Azure Container Registry (ACR)

Microsoft Azure

Master Node1 Node2

VSTS

Docker-Compose up

CI

Demo

Sharing Docker Images via Azure Container Registry

Docker Compose

React.JS Website

“Continuous automatedscheduling, coordination, andmanagement of complex systemsof containerized components andthe resources they consume.”@karlkfi

Application

Infrastructure

Azure Container Service

ARM Templat

e

Orchestrator

DemoDeploying an ACS Cluster with Kubernetes OrchestratorUsing AZ cli script

Create Cluster

Master Node1 Node2

App Marketplaces

http://kubeapps.com http://mesosphere.github.io/universe/

DevOps Practices with VSTS + Azure

Local Dev

Source Repo

Build Docker Image

Azure Container Registry (ACR)

Microsoft Azure

Master Node1 Node2ACS / K8s Cluster

Deploy to Cluster(Stage)

Deploy to Cluster(Prod)

Automated Tests

VSTS

Docker-Compose up

CI

CD RM

DemoDeployment Using Helm to ACS+K8s Cluster

Continuous Delivery to ACS+K8s with VSTS

Resources• DevOps Fundamental Video Series

http://aka.ms/DevOpsFundamentals • Continuous Delivery to ACS+K8s with VSTS

http://wp.me/p355zy-6h• MVA Courses on Microservices

https://mva.microsoft.com/search/SearchResults.aspx#!q=microservice&lang=1033

• VSTS Kubernetes Taskhttps://github.com/TsuyoshiUshio/KubernetesTask

• ACS – Kubernetes Walkthroughhttps://docs.microsoft.com/en-us/azure/container-service/container-service-kubernetes-walkthrough

• ACS – DCOS CI/CD https://docs.microsoft.com/en-us/azure/container-service/container-service-setup-ci-cd

• Microsoft DevOps Case Studieshttps://microsoft.github.io/techcasestudies/

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