SVILUPPARE E GESTIRE ARCHITETTURE A MICROSERVIZI SU AZURE

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Sviluppare e gestire architetture a microservizi su Azure

Vito Flavio [email protected] - @vflorussohttps://github.com/vflorusso/

mailto:[email protected]

https://github.com/vflorusso/

https://github.com/vflorusso/

Chi sono e cosa faccio

Obiettivi e takeaway

Architetture

Cloud

Stato della

tecnologia

Azure

Docker

Service

Fabric

Un po’ di contesto

80s 90s 2000s oggi

Architetture

Computing style

Ciclo di vita

PC o Mainframe Desktop e browser Web e smart client Mobile, web, desktop

«fat client»«fat server»

Client - Server SOA Distribuite

Waterfall Waterfall + Agile Agile + ScrumScrum + LeanContinuous delivery

Ieri

Le sfide

Oggi

Uno store dati

Un sistema operativo prevalente

Un client

Una tecnologia di sviluppo

ER, NoSQL, Hadoop

Windows + Linux

Mobile, Web, TV

.NET, Javascript, NodeJS, Xamarin, Java

Abbiamo bisogno di un nuovo stile di architettura

L’evoluzione dell’architettura software

Desktop

Client

Server

Browser

Web Server

Db Server

Any Device

microservices

API Proxy

Cosa è un «Microservice»

• Funzionalità specializzata• «loosely coupled» da altre funzionalità“Autonomo”

• Sviluppato, testato e aggiornato autonomamente“Isolato”

• Può avere o non avere stato• scalare in maniera indipendente“Elastico”

• “fault tolerant”• altamente disponibile“Resiliente”

• Risponde in tempi rapidi e “predicibili”“Responsivo”

Architettura logica

Microservice

• “Any client” UX

• SDK per accedere al servizioSDK

• Protocollo di comunicazione standard (in genere REST/HTTP)

Protocol

• Modelli datiModels

• Logia e regole di businessService

• Strato di accesso ai datiDAC

• Store di dati persistenteStore

• “Continuous Delivery”Automation

Protocol

Protocol

DAC

Store

Any Client

Models

Service

SDK

Auto

mati

on

Le soluzioni disponibili su Azure

VMs and VM Scale Sets

Azure Public CloudAzure-Consistent Private Cloud

VM Extensions

SCALR, RightScale, Mesos, Swarm

Service Fabric (VMs and Containers)

BatchApp Service

MediaWeb Apps

MobileApps

Apprenda, CloudFoundryJelastic, Marathon

Infrastructure

IaaS and IaaS+

General Compute

PaaS

Vertical compute

PaaS

Cluster Orchestratio

n

Docker: VM vs Container

AppA

Hypervisor (Type 2)

Host OS

Server

GuestOS

Bins/Libs

AppA’

GuestOS

Bins/Libs

AppB

GuestOS

Bins/Libs

VM

GuestOS

GuestOS

App A’Host OS

Server

Bins/Libs

App A

Bins/LibsApp B

App B’

App B’

App B’Container

I Container sono isolati,ma condividono il kernel del sistema operativo e i binari/librerie

Docker Engine

Picture Source: www.docker.com

Portabilità, agilità e cost-saving

Docker: portabilità dei container

Docker: Ecosistema

Docker Host

Docker Client

Docker Hub

Container A

Container B

…Source Code Repo

Create

Delete

List

Push

Pull

Private Repositories

Private Repositories

Docker: continuous integration

Container«app»

Container«cache»

Container«data»

Docker Host #1 Docker Host #2 Docker Host #3

Applicazione

Ambiente di runtime

a c dc a d d d d d c c

Docker: continuous integration (contd.)

Container«app»

Container«cache»

Container«data»

Docker Host #1 Docker Host #2 Docker Host #3

Applicazione

Ambiente di runtime

a c dc a d d d d d c c

Machine

Compose

Swarm

Docker Compose: YAML filewordpress.ymlname: counterwordpress: image: wordpress links: - mysql ports: - "80:80" environment: - WORDPRESS_DB_NAME=wordpress - WORDPRESS_DB_USER=wordpress - WORDPRESS_DB_PASSWORD=wordpresspwd mysql: image: mysql volumes: - /home/docker/mysql:/var/lib/mysql environment: - MYSQL_ROOT_PASSWORD=wordpressdocker - MYSQL_DATABASE=wordpress - MYSQL_USER=wordpress - MYSQL_PASSWORD=wordpresspwd

group.ymlname: countercontainers:

web:build: .command: python app.pyports:- "5000:5000"volumes:- .:/codelinks:- redis

redis:image: redis:latest

Azure PaaS – App Service / Data Stores

Doc DB

Web App

Azure CacheSQL DB

Microservice A

API App

Microservice B

Batch

Azure PaaS – Continuous Deployment

Doc DB

Web App

Azure CacheSQL DB

Microservice A

API App

Microservice B

Batch

RESOURCE GROUP

Azure Resource Manager

json json

Esempi di file JSON

https://azure.microsoft.com/en-us/documentation/articles/app-service-deploy-complex-application-predictably/

Esempi di file JSON


Esempi di file JSON


Service Fabric

Azure

WindowsServer Linux

Hosted Clouds

WindowsServer Linux

Service Fabric

Private Clouds

WindowsServer Linux

High Availability

Hyper-Scale

Hybrid Operations

High Density

Microservices

Rolling Upgrades Stateful

services

Low LatencyFast startup & shutdown

Container Orchestration & lifecycle management Replication &

Failover

Simple programming models

Load balancing

Self-healingData Partitioning

Automated Rollback

Health Monitoring

Placement Constraints

Service Fabric: modelli di programmazione

Reliable Actors APIReliable Services API

Azure Private Clouds

Applications composed of microservices

High Availability

Hyper-Scale

Hybrid Operations

High Density

Rolling Upgrades Stateful

services

Low LatencyFast startup & shutdown

Container Orchestration & lifecycle management Replication &

Failover

Simple programming models

Load balancing

Self-healingData Partitioning

Automated Rollback

Health Monitoring

Placement Constraints

Service Fabric

A set of independent machines; physical or virtual

Service Fabric: Typical datacenter

A set of machines that Service Fabric stitches together to form a cluster

Clusters can scale to1000s of machines

Service Fabric Cluster: A federation of machines

Node

Node

Node

Node

Node

Node

Service Fabric: Machine failure detection

Time = t1

8376 50

46

64 New Node arrived61

Time = t2

8361

5046

Failures Detected

cluster reconfigured

8376

6450

46

Time = t0

Nodes failed

Controllo o «servizi PaaS»

Ultimate Control

Rapid Development

VMs /VM Scale Sets

VM ExtensionsService Fabric /

BatchWeb Apps/ App Service

IaaS PaaS

Introduzione alla next-gen computing platform su Azure:

http://channel9.msdn.com/Events/Build/2015/3-618

Microservizi e Docker su Azure (corso MVA):

http://channel9.msdn.com/Series/Exploring-Microservices-in-Docker-and-Microsoft-Azure

Service Fabric:

http://azure.microsoft.com/en-us/documentation/articles/service-fabric-get-started/

https://github.com/azure/servicefabric-samples





Link e approfondimenti

















Domande?

Grazie a tutti per la partecipazione

Riceverete il link per il download a slide e demo via email nei prossimi giorni

Per contattarmi

su Twitter: @vflorusso

via e-mail: [email protected]

Grazie

SVILUPPARE E GESTIRE ARCHITETTURE A MICROSERVIZI SU AZURE

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