05 December 2020

#Openshift

#Openshift
Define labels.
Define source-to-image strategy.
Define custom build strategy.
Define the terms "blue" and "green" deployments.
Define Authentication In Openshift?
What are the benefits of using DevOps tools?
What are the most common OpenShift build strategies?
What are Init containers used for?
What are the different Red Hat Enterprise Linux CoreOS (RHCOS) tasks that you can perform as a cluster administrator?
What is the OpenShift Container Platform by Red Hat?
What exactly do you mean when you say "rolling deployments"?
What exactly do you mean when you say "canary deployment"?
What are cartridges in OpenShift?
What is the OpenShift Command Line Interface (CLI)?
What distinguishes Docker from OpenShift?
What are Red Hat OpenShift Pipelines?
What OpenShift Virtualization can do for you?
What are the features provided by Red Hat OpenShift?
What is the use of admission plug-ins?
What are the multiple identity providers supported by the OpenShift Container?
What is a route and how can you create a simple HTTP-based route to a web application?
What is HTTP strict transport security?
What is the web console for the OpenShift Container Platform?
What are services in OpenShift?
What is the procedure for adding secrets with a web console?
What systems are running on AWS in the OpenShift environment?
What is the procedure followed in Red Hat when dealing with a new incident?
What are the advantages of using OpenShift?
What do you mean by autoscaling in OpenShift?
What do you know about OpenShift Kubernetes Engine?
What are OAuth?s Identity Providers?
What is Volume Security and how does it work?
What are the toggles for the features?
What distinguishes OpenShift from Kubernetes in terms of its components?
What is a build configuration?
What Is Openshift's Downward API?
What do you understand by service mesh?
What are platform operators?
What are the benefits of using Docker And Kubernetes in Openshift?
What is HAProxy?
What are the security-related features in OpenShift Container Platform that are based on Kubernetes?
What is the average salary in OpenShift?
What is the programming language required for OpenShift coding?
What do you know about virtualisation?
What are the different virualizations?
What is the latest version of OpenShift?
What is a cartridge?
What is the concept of the OpenShift container?
What are the main components of OpenShift?
What will be the syntax for inserting multiple images in a single container?
What is the function of build-in OpenShift?
What is an OAuth server?
What do you think about Docker Strategy?
What is supposed with the aid of using pods in Openshift?
What is meant by application scaling in Openshift?
What do you know about Canary Deployments?
What is the deployment of Pod Resources?
What Is Gear In Openshift?
What is the Source-to-Image (S2I) approach?
What are Annotations in Open‐Shift?
What is SSH authentication?
What security controls does OpenShift provide for containers?
What are the benefits of Openshift?
What is the Downward API in OpenShift?
What is the difference between gear and container?
What is Gear ?
What is Container ?
What is the Source-to-Image (S2I) strategy?
What is the difference between OpenShift and OpenStack?
What is Volume Security?
What is Cloud Computing?
What is OpenShift deployment?
What is rolling strategy in OpenShift?
What is Containerization ?
What is OpenShift ?
What Is Openshift Pipeline?
What Is Application Scaling?
What Is Downward Api In Openshift?
What Is Haproxy On Openshift?
What Is Blue/green Deployments?
What Is Deployment Pod Resources?
What Is Canary Deployments?
What Is Rolling Strategy?
What Is Pod ?
What Is Automation ?
What Is Openshift Container ?
What Is Source-to-image Strategy?
What Is Routes In Openshift?
What are the features of OpenShift?
What are deployment strategies?
What are rolling deployments?
What are the feature toggles?
What are the build strategies in OpenShift?
What are Build configurations?
What are the unique components you can find in OpenShift as compared to Kubernetes?
What are different types of Cloud?
What are gears in OpenShift?
What Are Labels In Open‐shift?
What Are The Identity Providers In Oauth ?
What Are Feature Toggles?
What Are Stateful Pods?
What do you know about the OpenShift pipeline?
What the systems on the OpenShift environment running on AWS?
What type of security controls can you find on OpenShift?
What is OpenShift Container Platform?
What is OpenShift Online?
What is OpenShift Dedicated?
What is OpenShift CLI?
What is OpenShift Web Console?
What are Pods in OpenShift?
What is OpenShift Origin?
What are the features of OpenShift Origin?
What can you run on OpenShift?
What are the security controls does OpenShift provide for containers?
What is Source-to-Image (S2I)?
What are the benefits of OpenShift Origin?
What are the new features introduced in OpenShift Container Platform 3.7?
What is OpenShift Cartridges?
What is Cartridge vs Image?
What is Project vs Domain?
What is Gear vs Container?
What is Master vs Broker?
What are the features of OpenShift v3?
What Are the Layers in OpenShift?
What Is the OpenShift Origin Architecture?
What are Masters?
What are Nodes?
What is Kubelet?
What are Init Containers?
What is Image Version Tag Policy?
Name some identity providers in OAUTH.
Name the network plugin for providing connectivity for pods across an entire cluster.
Write down the difference between Openstack and Openshift?
Explain the use of triggers in Red Hat OpenShift Pipelines.
Explain the concept of pods in OpenShift.
Explain OpenShift.
Explain Online OpenShift.
Explain Routes.
Explain Custom Strategy
Explain rolling deployments.
Explain how Docker and Kubernetes work with Openshift?
Explain Volume Security?
Explain about Haproxy on Openshift?
Explain Green deployment.
Explain about OpenShift CLI
Explain Autoscaling in Openshift?
Explain container Orchestration in Kubernetes?
Explain Openshift architecture?Can we have two accounts on OpenShift platform?
Explain Openshift Architecture ?
Why should you use OpenShift?
Why do we need DevOps tools?
Which tasks can declare a Persistent Volume (PV) object?
Which projects can claim a Persistent Volume (PV) object?
How is OpenStack different from OpenShift?
How much time will it take to learn OpenShift?
How can I become Openshif certified?
How many enterprise editions are available in Openshift?
How to manage Openshift security?
How OpenShift uses Docker and Kubernetes?
How OpenShift works with Docker and Kubernetes?
Openshift
  • Multi-Environment support.
  • One-click deployment.
  • Responsive web console.
  • Remote application debugging.
  • Standardized workflow for developers.
  • Rest API support.
  • Support for remote SSH login to the application.
  • In-built database services.
  • Automatic application scaling.
  • The facility of support for release management and continuous integration.
  • IDE integration.
Build strategies
  • Custom Strategy
  • Source to image Strategy
  • Docker Strategy
  • Pipeline Strategy
  • Pods
  • Rolling deployment & Canary Deployments
  • Toggles
  • OpenShift Origin
  • OpenShift cartridges
  • Gear and Container
  • Gear - Isolated groups are called Gears
  • Source-to-Image (S2I) strategy
  • OpenShift Online
  • Persistent Volume
  • Volume Security
  • OpenShift pipeline
Master Components
  • API Server: The central control point for managing, configuring, and monitoring OpenShift clusters.
  • Controller Manager: Ensures the desired state of the system by running various controller processes.
  • Scheduler: Assigns workloads to nodes based on resource availability and other constraints.
  • etcd: A key-value store used as a data store for Kubernetes, storing all cluster data.
Node Components
  • Kubelet: An agent running on each node that ensures containers are running in pods.
  • Kube-proxy: Manages network rules on nodes, allowing communication between pods and services.
  • CRI-O: A lightweight container runtime specifically for Kubernetes, supporting Open Container Initiative (OCI) standards.
Networking
  • OpenShift SDN: Manages pod networking, providing a Software-Defined Network to connect containers.
  • Service Mesh: Uses Istio to manage microservice traffic with advanced routing, monitoring, and security features.
  • Ingress Controllers: Manage external access to services within the cluster, typically using HAProxy or NGINX.
Storage
  • Persistent Volumes (PVs): Abstractions for storage resources in the cluster, supporting dynamic provisioning.
  • Storage Classes: Define different types of storage (e.g., SSDs, network storage) for use in the cluster.
Monitoring and Logging
  • Prometheus: Monitoring and alerting toolkit used for collecting and querying metrics.
  • Grafana: A tool for visualizing metrics collected by Prometheus.
  • EFK Stack (Elasticsearch, Fluentd, Kibana): Used for logging and log analysis.
Monitoring and Logging
  • Prometheus: Monitoring and alerting toolkit used for collecting and querying metrics.
  • Grafana: A tool for visualizing metrics collected by Prometheus.
  • EFK Stack (Elasticsearch, Fluentd, Kibana): Used for logging and log analysis.
Developer Tools
  • Source-to-Image (S2I): A framework for building reproducible Docker images from source code.
  • OpenShift Pipelines (Tekton): CI/CD pipelines for automating application deployments.
  • Developer Console: A web-based interface providing tools and dashboards for developers to build, deploy, and manage applications.
Management and Automation
  • Operators: Kubernetes-native applications that manage complex applications and automate routine tasks.
  • OpenShift Web Console: A graphical interface for managing the cluster, applications, and monitoring resources.
  • OperatorHub: A marketplace for discovering and deploying Kubernetes Operators.
Security
  • RBAC (Role-Based Access Control): Manages user permissions and access controls.
  • Pod Security Policies: Define security settings for pods to ensure compliance with security standards.
  • Service Mesh Security: Provides features like mutual TLS for secure service-to-service communication.
Service Mesh
  • Istio: Integrates with OpenShift to provide traffic management, security, and observability for microservices.
What does OpenShift use to provide high availability and scaling of applications?
Load Balancers
Auto-scaling groups
Horizontal Pod Autoscaler*
Vertical Pod Autoscaler
What cloud platform OpenShift is?
IaaS
PaaS*
MaaS
SaaS
In comparison to Kubernetes, what features are exclusive to OpenShift?
Node
Internal Registry*
Master
None
Select one valid Openshift registry type from among the following.
Personal Registry
Private Registry*
Security Registry
None
Which Openshift component is the Kubernetes Ingress equivalent?
Pod
Node
Router*
Proxy
The ReadWriteMany access mode is supported by which one of the following OpenShift storage plugins?
GlusterFS*
Azure Disk
Openstack Cinder
None
Your Openshift cluster requires a monitoring solution. Because you're primarily interested in metrics, you'll need a sophisticated query language, alerting, and notification capabilities, as well as improved graphing and alerting availability and uptime. Which option is your first pick?
InfluxDB
OpenTSDB
Prometheus*
Nagios
For your Openshift cluster, you'll need a monitoring solution. Given the need for long-term data persistence and, ideally, a consistent presentation of data across copies. Which option is your first pick?
InfluxDB*
OpenTSDB
Nagios
Prometheus
Kubernetes Ingress and Openshift Routes are very comparable. You must, however, employ Openshift Routes if you require:
External access to services
TLS passthrough for improved security*
Load-balancing strategies (e.g. round robin)
Persistent (sticky) sessions
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