Chapter 3. Platform as a Service Flashcards
1
Q
What is Platform as a Service and what does it enable?
A
- cloud service model connecting a class of cloud computing services
- together they allow users to develop, run and manage applications while concealing the tasks involved with the management of the underlying infrastructure
2
Q
What kind of choice is available for PaaS solutions?
A
To choose between managed and self-managed PaaS solutions
3
Q
What are examples for managed PaaS solutions?
A
- Amazon AWS
- Microsoft Azure
- Google Cloud Platform (GCP)
- IBM Cloud
- Oracle Cloud
4
Q
What is the difference between managed and self-managed PaaS solutions?
A
- self-managed solutions can be deployed as on-premise
- using Platforms like Red Hat OpenShift
5
Q
Where and how can PaaS be deployed?
A
- can be deployed on top of IaaS
- or independently on VMs, bare-metal servers and containers
6
Q
What is Cloud Foundry?
A
Open Source Platform as a Service (PaaS) framework
7
Q
What characterizes Cloud Foundry?
A
- portable to any Cloud
- highly interoperable
- has an architecture supporting any programming language
- integrates easily with various cloud and on-premise tools
- provides means for applications to access external resources through application service gateways
8
Q
What are key characteristics of Cloud Foundry?
A
- Application portability
- application auto-scaling
- application isolation
- centralized platform management
- centralized logging
- dynamic routing
- Application Health management
- role-based application deployment
- Horizontal and vertical scaling
- security
- support for different IaaS platforms
9
Q
What are key benefits of Cloud Foundry?
A
- open source platform, but also many commercial Cloud Foundry providers
- offers centralized platform management
- enables horizontal and vertical scaling
- provides infrastructure security
- offers support for multiple IaaS providers
- leverages Kubernetes workload management capabilities to optimize application deployments in containers
- flexible solution, supported by an extensive community of developers
10
Q
What is Red Hat Open Shift?
A
- open source PaaS solution provided by Red Hat
- built on-top of Kubernetes
11
Q
What kind of products, categorized by Deployment models are offered by Red Hat?
A
- Red Hat OpenShift - Managed > Hosted OpenShift deployments on public cloud platforms
- Red Hat OpenShift Platform Plus - self-managed
- Red Hat OpenShift Container Platform - self-managed > hybrid cloud PaaS
- Red Hat OpenShift Kubernetes Engine - self-managed > entry-level solution
12
Q
What enables Red Hat OpenShift?
A
- allows developers to easily and quickly deploy containerized applications through application images and application templates enabled for one-click deployments
- working on Kubernetes receives all features offered by the container orchestration platform
- integrates well with** Continous Deployment tools **to deploy applications as part of CICD pipeline
- application management through CLI tools, web user interfaces and integrated development environment
13
Q
What are benefits of Red Hat OpenShift?
A
- open source PaaS solution
- uses Kubernetes for workload management
- scale applications easily and quickly
- provides integration CI/CD tools
- simple and flexible solution, supported by an active community of developers
- enables application portablity (created applications can run on any platform that supports Kubernetes)
- choice for deployment between physical or virtual infrastructure as well as hybid, private or public clouds
14
Q
What is Heroku?
A
- fully-managed container-based cloud platform with integrated data services and a strong ecosystem
15
Q
What is different about Heroku in comparison to other PaaS offerings?
A
- introduces a unique workflow, which users need to follow (Heroku-centric development and deployment)
- uses buildpacks for each supported language (pre-built image)
- encapsulates application in a virtualized UNIX container, each called dyno
- application configuration can be decoupled from application source code
