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Cloud Ready? Migration von Anwendungen in die Cloud

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Fachposter, 2016: Erstellt von QAware in Zusammenarbeit mit FZI Forschungszentrum Informatik und ObjektSpektrum (Verlag: SIGS DATACOM).

Bestellbar unter https://www.sigs-datacom.de/order/poster/Cloud-Migration-Poster-2016.php

(Dokument bitte herunterladen für bessere Lesbarkeit)

Published in: Data & Analytics
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Cloud Ready? Migration von Anwendungen in die Cloud

  1. 1. Cloud Ready? Migration von Anwendungen in die Cloud supported by Inhaltliche Entwicklung: Oliver Denninger FZI Forschungszentrum Informatik, denninger@fzi.de FZI Forschungszentrum Informatik www.fzi.de/se MigrierenMigrierenEntscheidenEntscheidenVorbereitenVorbereiten DevOps: Entwicklung, Deployment und Betrieb verzahnen Klar definierte und strukturierte Deployment Prozesse, die m�glichst weitgehend automati- siert werden Absicherung der Cloud-Anwendung DevOps: Entwicklung, Deployment und Betrieb verzahnen Klar definierte und strukturierte Deployment Prozesse, die m�glichst weitgehend automati- siert werden Absicherung der Cloud-Anwendung Cloud-Anwendungen erm�glichen die schnelle Auslieferung neuer Features, wenn DevOps Prinzipien ber�cksichtigt werden. B etrieb & �ber wachung Ent wicklung Typen Private Cloud: Die Cloud-Infrastruktur wird f�r einen einzigen Kunden bereitgestellt (nicht zwingend durch ihn selbst und nicht zwin- gend on-�site). Public Cloud: Die Cloud-Infrastruktur wird durch einen speziali- sierten Cloud-Anbieter betrieben und steht vielen unterschiedlichen Kunden offen. Hybrid Cloud: Zusammenschluss von Private und Public Clouds um unterschiedliche Anwendungsanforderungen abzudecken. Multi Cloud: Zusammenschluss mehrerer Clouds f�r erh�hte Verf�gbarkeit und Kostenoptimierung. Bereitstellungsschichten Software as a Service: Bei SaaS stellt der Anbieter fertige, direkt einsetzbare Anwendungen wie E-Mail oder CRM bereit und wartet diese. Platform as a Service: Bei PaaS stellt der Anbieter grund- legende Dienste wie Webserver, Application Server oder Datenbanken bereit die durch mehrere Kunden geteilt werden. Infrastructure as a Service: Bei IaaS stellt der Anbieter virtualisierte Hardware sowie Werkzeuge zum Provisioning bereit. Der Kunde betreibt darauf Virtuelle Maschinen ohne ex- klusiven Hardware-�Zugriff. Cloud-Merkmale On-�demand self-service: Schneller und einfacher Einstieg in die Cloud, da Kunden jederzeit selbst�ndig Dienste buchen und anpassen k�nnen. Broad network access: Der Zugriff auf Cloud-Dienste ist �ber das Internet von �berall m�glich. Standardisierte Zugriffsmechanismen vereinfachen die Unterst�tzung mobiler Ger�te. Durch die breite Verf�gbarkeit sind Cloud-Dienste anf�lliger f�r Sicherheitsl�cken. Resource pooling: Cloud-Anbieter nutzen dynamische Ressourcen Einteilung. Oft nutzen mehrere Kunden die gleichen Ressourcen und erhalten somit schwankende Leistung. Meist haben Kunden keine genaue Kenntnisse wo ihre Anwendungen laufen und Daten gespeichert werden. Rapid elasticity: Provisioning von Ressourcen ist schnell und mit einem gro�en Spielraum m�glich. Entsprechend k�nnen Kosten meist auf die tats�chlich notwendige Ressourcen beschr�nkt werden. Measured service: Da Cloud-Anbieter ihre Infrastruktur permanent �berwachen und Ressourcen dynamisch umverteilen, stehen auch den Kunden umfangreiche Monitoring Funktionen zur Verf�gung. Diese sind jedoch wie die Funktionen zum selbstst�ndigen Provisioning anbieter- spezifisch und erschweren den Anbieterwechsel. Cloud-Taxonomy (nach NIST, National Institute of Standards and Technology) De ployment SaaS PaaS IaaS private public hybrid Fundierte Entscheidung f�r oder gegen Cloud-Migration auf Basis der aufbereiteten Informationen Welche Komponenten werden migriert? Vendor Lock-in bez�glich Dienstanbieter m�glich? In welcher Reihenfolge werden Komponenten migriert? Ist Re-Engineering oder Re-Factoring einzelner Komponenten sinnvoll? Ziel-Architektur definieren Lassen sich komplexe Komponenten z.B. in Microservices zerlegen? Kleine Kompo- nenten lassen sich einfacher auf nicht-exklusiv genutzte und somit kosteng�nstige Cloud-Ressourcen verteilen Lassen sich Komponenten refaktorisieren? Komponenten mit einem serviceorien- tierten Ansatz lassen sich einfacher in der Cloud nutzen Unterst�tzende Werkzeuge f�r Architekturanalyse: Enterprise Architect, Rational System Architect f�r Modellierung und structure101, Lattix oder Sotoarc f�r Abh�ngig- keitsanalyse Cloud-Angebote pr�fen Welche Cloud-Infrastruktur soll genutzt werden? Cluster-Scheduler, Cluster-Orchestrierer, Dienste f�r verteilte Anwendungen (mehr siehe http://www.qaware.de/news/cloudnative) Analyse der zu erwartenden Performance der Migrationsvarianten Skalierbarkeit, Latenz, Transfervolumen, Antwortzeiten, Ziel-KPIs definieren. Simulation auf Architekturbasis mit Werkzeugen wie Palladio Kostenmatrix erstellen Betriebs- und Migrationskosten pro Komponente, Migrationsvariante und Cloud-Anbieter Planung der Reihenfolge der Migration Migration aller Komponenten in einem Schritt oder schrittweise Migration einzelner Komponenten Bei schrittweiser Migration ist eventuell zus�tzlicher Integrationsaufwand zwischen on-site und bereits migrierten Komponenten notwendig Performance 1. 2. 3. Erfassung existierender Anwendungslandschaft Enterprise Architecture Gesch�ftsprozesse Softwarearchitektur und Technologien Einarbeitung in Cloud-Thematik Cloud-Typen Cloud Bereitstellungsschichten Cloud-Merkmale Rechtliche Aspekte mit Fokus auf Deutschland z.B. Trusted Cloud-Initiative http://www.trusted-cloud.de/ Aufbau von Cloud-Kompetenzen (Pilotprojekt, PoC) Aufsetzen der Cloud-Umgebung Provisioning und Management Deployment Datentransfer in und aus der Cloud Integration der Cloud-Anwendung Identifikation ungeeigneter Komponenten Legacy Technology (z.B. alte Datenbanken) Nicht-funktionale Anforderungen, bspw. Echtzeitanforderungen, Bandbreite, Speicherbedarf Anforderungen bzgl. Sicherheit, Datenschutz, Regulatorisches Recherche der Kostens�tze verschiedener Cloud-Anbieter Daten�bertragung Datenspeicherung Betriebszeit Softwarelizenzen Vorbereitung notwendiger Informationen Erfassung der existierenden Anwendungslandschaft, sofern nicht bereits verf�gbar Einarbeitung in die Cloud-Thematik Analyse von Komponenten die f�r den Cloud-Einsatz ungeeignet sind Recherche der Kostens�tze verschiedener Cloud-Anbieter Monitoring der Verf�gbarkeit und User Experience Monitoring der Sicherheit Monitoring der Auslastung, da Over Provisioning der Cloud-Infrastruktur vermeidbare Kosten verursacht Monitoring der Verf�gbarkeit und User Experience Monitoring der Sicherheit Monitoring der Auslastung, da Over Provisioning der Cloud-Infrastruktur vermeidbare Kosten verursacht IT-Probleme l�sen. Digitale Zukunft gestalten.

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