Microservices mit ASP.NET Core 1.0 und dem Docker Ökosystem

Alexander Zeitler

Solution Architect und Entwickler bei PDMLab

Microsoft MVP für ASP.NET

ASP.NET Web API / Microsoft Azure Advisor

http://alexanderzeitler.com

alexander.zeitler@pdmlab.com

@alexzeitler_

Agenda

  • Microservices
  • Herausforderungen
  • Wie hilft Docker?
  • ASP.NET Core mit Docker deployen

 

Microservices

In computing, microservices is a software architecture style, in which complex applications are composed of small, independent processes communicating with each other using language-agnostic APIs.

 

These services are small, highly decoupled and focus on doing a small task.

http://en.wikipedia.org/wiki/Microservices

Beispiel: E-Commerce

  • Web Front-End
  • Product Data Management (PDM)
  • Lager
  • Einkauf
  • Versand
  • Payment-Dienstleister
  • Rechnungs- und Mahnwesen
  • Identity

Vorteile

  • Verschiedene Plattformen für verschiedene Services
  • Austausch / Refactoring von Services einfacher
  • Entkopplung beim Deployment
  • "Two-Pizza"-Regel umsetzbar
  • (Code) Ownership einfacher

Herausforderung: 

Komplexität

Komplexität

  • Significant Operations Overhead
  • Substantial DevOps Skills Required
  • Implicit Interfaces
  • Duplication Of Effort
  • Distributed System Complexity
  • Asynchronicity Is Difficult!
  • Testability Challenges

http://highscalability.com/blog/2014/4/8/microservices-not-a-free-lunch.html

Anforderungen an Deployment

  • Schnell
  • Zuverlässig
  • Reproduzierbar

Deployment automatisieren!

Wie hilft Docker?

Build, ship and run any application anywhere

http://upload.wikimedia.org/wikipedia/commons/c/c5/Britain_Delivers_the_Goods_in_Wartime-_Dock_Workers_in_Bristol,_England,_1940_D1224.jpga

http://i1.wp.com/www.chinasmack.com/wp-content/uploads/2013/09/historical-shanghai-photos-early-20th-century-14.jpg

vs...

https://homefaraway.files.wordpress.com/2012/04/april-24-2012-026.jpg

Put it in a Container

Build

Package application in a container image

Ship

Move container image to another machine

Run

Execute container based on that image

Any Application

All applications running on Linux

Anywhere

VM on-premises, cloud, bare metal

Build

Dockerfile

FROM ubuntu:14.04
MAINTAINER Docker Team <education@docker.com>
RUN apt-get update
RUN apt-get install -y nginx
RUN echo 'Hi, I am your father...erm in your container' \
>/usr/share/nginx/html/index.html
CMD [ "nginx", "-g", "daemon off;" ]
EXPOSE 80

Ship

Docker Hub

Image name <username>/<reponame>
z.B. microsoft/dotnet


docker push
docker pull

https://hub.docker.com/

Run

  • Leichtgewichtig
  • Schnell

Wie schnell?

Benchmark

$ time docker run ubuntu echo hello world

Docker Footprint

$ docker images

$ docker history <CID>

Any application

  • Web apps
  • API backends
  • Datenbanken (SQL, NoSQL)
  • Big data
  • Message queues
  • ...

Runs on Linux == Runs in Docker

Windows Container?

Nano Server

Getting started

http://www.docker.com/tryit/

https://www.docker.com/products/docker-toolbox

curl -fsSL https://get.docker.com/ | sh

Try

On OS X / Windows

On Linux

Install

https://beta.docker.com/

ASP.NET /.NET Core

in Docker

microsoft/aspnet (< RC2)

microsoft/dotnet (>= RC2)

Docker ecosystem

Docker engine

Docker Machine

Docker Compose

Docker Cloud

Docker Hub

Docker Registry

Docker Swarm

Next Steps

  • Docker Machine
  • Docker Compose
  • Docker Swarm

Docker Machine

$ docker-machine create --driver virtualbox dev

Docker Compose

version: "2"

services:
    web:
      build: .
      links:
       - db
      ports:
       - "8000:8000"
    db:
      image: postgres

Demo

ASP.NET Core 1.0 RC2

in Docker

Fragen?

Danke!

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