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Samenvatting Virtualization Methods 2
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Virtualization Methods2 – Cloud automationSamenvatting
,Inhoudsopgave
1 Cloud concepten ................................................................................................................................... 1
1.1 Cloud service models ..................................................................................................................... 1
1.2 Cloud allocation models ................................................................................................................. 2
2 Business Continuity ............................................................................................................................... 2
2.1 Cloud Governance ......................................................................................................................... 2
2.2 Business continuity ......................................................................................................................... 2
2.3 Disaster recovery ........................................................................................................................... 2
3 Configuration management ................................................................................................................... 3
4 Automated deployment .......................................................................................................................... 4
5 Resource management ......................................................................................................................... 4
6 Software defined ................................................................................................................................... 5
6.1 SDN-architectuurlagen ................................................................................................................... 5
6.1.1 SDN modellen ......................................................................................................................... 6
6.2 Software defined storage ................................................................................................................ 6
7 Containerization .................................................................................................................................... 7
7.1 Terminologie – image ..................................................................................................................... 7
8 Workflow management .......................................................................................................................... 8
8.1 Workflow automation ...................................................................................................................... 8
8.2 Workflow management ................................................................................................................... 8
8.3 Separation of Management and Execution ..................................................................................... 8
8.4 Workflow Enactment Service .......................................................................................................... 9
Pagina | ii
, Samenvatting Virtualization Methods 2 – Jurgen Kamp
1 Cloud concepten
Wat is cloud?
Cloud computing is een service die pooling van resources gebruikt om zo on-demand, (as a)
service complexe systemen uit te rollen. Voorbeeld is Microsoft Azure.
Cloud deployment models
- Private: gaat om wie de baas is van de hardware
- Public: AWS, dropbox, Microsoft Azure
- Hybrid: private cloud in combinatie met Office 365
- Cummunity: overheidsgebruik
Kenmerken van cloud:
- On-demand self-service
- Broad network access
- Resource pooling (multi-tenant)
- Rapid elasticity
- Measured service
1.1 Cloud service models
SPI model
- SaaS (software as a service): software/applicaties draaien op cloud infra
- PaaS (platform as a service): software/applicaties ontwikkelen
- IaaS (infrastructure as a service): zelf cloud infra beheersen
Andere service models:
- SeCaas (security as a service): Cloudflare
- HRaas (human resource as a service): Human resources
- DRaas (disaster recovery as a service): Backups
Wat is Cloud Automation?
Automatisering strekt zich uit tot de software laag, waar complexe systemen eenmaal kunnen
worden geconfigureerd en vervolgens on-the-fly worden uitgerold indien nodig, met behulp van
cloud automatiseringstools.
Wat is Cloud Orchestration?
Cloud orchestration beschrijft het arrangeren en coördineren van geautomatiseerde taken,
uiteindelijk resulterend in een geconsolideerd proces of workflow.
Waarom cloud automation/ Orchestration?
Huidige systemen zijn vaak:
- Complexity
- Inefficiency
- Inflexibility
Wat is Cloud Provisioning?
Cloud provisioning is het toewijzen van resources van een cloudprovider aan een klant.
- Automated provisioning (alles wordt geautomatiseerd aangevraagd)
- De-provisioning (intrekken van de resources)
- Over-provisioning (te veel resources -> te veel betaald)
- Under-provisioning (te weinig resources)
Pagina | 1
, Samenvatting Virtualization Methods 2 – Jurgen Kamp
1.2 Cloud allocation models
- Pay-as-you-go model: Is a payment method for cloud computing that charges based on
usage.
- Reservation-pool model: All the resources you allocate are immediately committed to the
organization virtual datacentre
- Allocation-pool model (A percentage of the resources you allocate from the provider virtual
datacenter are committed to the organization virtual datacenter).
Kijk vanuit verschillende invalshoeken
- Als provider wil je zoveel mogelijk verkopen
- Als klant wil je niet teveel betalen
2 Business Continuity
You can delegate authority but not responsibility
2.1 Cloud Governance
Cloud governance refers to the decision-making processes, criteria and policies involved in the
planning, architecture, acquisition, deployment, operation and management of a Cloud
computing capability.
Events that impact information availability
2.2 Business continuity
Business Continuity describes the processes and procedures an organization must put in
place to ensure that mission-critical functions can continue during and after a disaster.
5 stappen voor Business Continuity Planning
Step 1: Risk Assessment –Defining the probability of a risk occurring
Step 2: Business Impact Analysis (BIA) –RPO and RTO
Step 3: Plan Development –Get involved!
Step 4: Plan Implementation –Discuss, organise and educate
Step 5: Plan Testing & Maintenance –Test, Test, Test!
2.3 Disaster recovery
Disaster recovery refers to specific steps taken to resume operations in the aftermath of a
catastrophic disaster or emergency.
Pagina | 2
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