What is DevOps? Introduction to DevOps 8
Q142) Can you make DevOps without agile?
DevOps is one about some key elements to assist you to achieve this. Can you do agile software evolution without doing DevOps But managing agile software development and being agile are a couple really different things.
Q143) What exactly defined is DevOps?
DevOps is all of bringing commonly the structure also process of traditional operations, so being support deployment, including any tools, also practices of traditional construction methods so as source control also versioning.
Q144) Need for Continuous Integration:
Improves the quality of software.
Reduction in time taken to delivery
Allows dev team to detect and locate problems early
Q145) Success factor for the Continuous Integration
Automate the build
Perform daily checkin and commits to baseline
Test in clone environment
Keep the build fast
Make it easy to get the newest deliverables
Q146) Can we copy Jenkins job from one server to other server?
Yes, we can do that using one of the following ways
We can copy the Jenkins jobs from one server to other server by copying the corresponding jobs folder.
We can make a copy of the existing job by making clone of a job directory with different names
Rename the existing job by renaming the directory
Q147) How can we create the backup and copy in Jenkins?
We can copy or backup, we need to backup JENKINS_HOME directory which contains the details of all the job configurations, build details etc.
Poll SCM will trigger the build only if it detects the change in SCM, whereas Build Periodically will trigger the build once the given time period is elapsed.
Q149) What is difference between docker image and docker container?
Docker image is a readonly template that contains the instructions for a container to start.
Docker container is a runnable instance of a docker image
It is a process of OS Level virtualization technique used to deploy the application without launching the entire VM for each application where multiple isolated applications or services can access the same Host and run on the same OS.
Q154) What is Puppet?
Puppet is a Configuration Management tool, Puppet is used to automate administration tasks.
Q155) What is Configuration Management?
Configuration Management is the System engineering process. Configuration Management applied over the life cycle of a system provides visibility and control of its performance, functional, and physical attributesrecording their status and in support of Change Management.
Q156) List the Software Configuration Management Features.
Version Control Friendly
Enable Change Control Processes
Q157) List out the 5 Best Software Configuration Management Tools.
CFEngine Configuration Tool.
CHEF Configuration Tool
Ansible Configuration Tool
Puppet Configuration Tool.
SALTSTACK Configuration Tool.
Q158) Why should Puppet be chosen?
It has good community support
Easy to Learn Programming Language DSL
It is open source
Q159) What is Saltstack?
SaltStack is based on Python programming & Scripiting language. Its also a configuration tool.Saltstack works on a non-centralized model or a master-client setup model. it provides a push and SSH methods to communicate with clients.
Q160) Why should Puppet to be chosen?
There are Some Reason puppet to be chosen.
Puppet is open source
Easy to Learn Programming Language DSL
Puppet has good community support
Q161) Advantages of VCS
- Multiple people can work on the same project and it helps us to keep track of the files and documents and their changes.
- We can merge the changes from multiple developers to single stream.
- Helps us to revert to the earlier version if the current version is broke.
- Helps us to maintain multiple version of the software at the same location without rewriting.
Q162) Advantages of DevOps
Below are the major advantages
- Continuous software delivery
- Less Complexity
- Faster Resolution
- Faster delivery of the features
- More stable operating environment
- Improved communication and collaboration between various teams
Q163) Use cases where we can use DevOps
- Explain the legacy / old procedures that are followed to develop and deploy software
- Problems of that approach
- How can we solve the above issues using DevOps.
For the 1st and 2nd points, development of the application, problems in build and deployment,
problems in operations, problems in debugging and fixing the issues
For 3rd point explain various technologies we can use to ease the deployments, for development, explain about taking small features and development, how it helps for testing and issue fixing.
Q164) Major difference between Agile and DevOps
Agile is the set of rules/principles and guidelines about how to develop a software. There are
software to public consumption and deploy in production environment, we will use the DevOps tools and Techniques for the operation of that software.
In a nutshell, Agile is the set of rules for the development of a software, but DevOps focus more on Development as well as Operation of the Developed software in various environments.
Q165) What Are the Benefits Of Nosql?
Non-relationals and schema-less data models
Low latency and high performance
Q166) What Are Adoptions Of Devops In Industry?
Use of the agile and other development processes and methods.
Demand for an increased rate of the production releases from application and business.
Wide availability of virtuals and cloud infrastructure from both internal and external providers;
Increased usage of the data center ,automation and configuration management tools;
Increased focus on the test automation and continuous integration methods;
Best practices on the critical issues.
Q167) How Is the Chef Used As a Cm Tool ?
Chef is the considered to be one of the preferred industry-wide CM tools. Facebook migrated its
an infrastructure and backend IT to the Chef platform, for example. Explain how to the Chef helps you to avoid delays by automating processes. The scripts are written in Ruby. It can integrate with a cloud-based platforms and configure new systems. It provides many libraries for the infrastructure development that can later to be deployed within a software. Thanks to its centralized management system, one of the Chef server is enough to be used as the center for deploying various policies.
Q168) Why Are the Configuration Management Processes And Tools Important ?
Talk about to multiple software builds, releases, revisions, and versions for each other software or testware that is being developed. Move on to explain the need for storing and maintaining data,
that key CM tools that can be used to the achieve these objectives. Talk about how to tools like Puppet, Ansible, and Chef help in automating software deployment and configuration on several servers.
Q169) Which Are the Some Of the Most Popular Devops Tools ?
The most popular DevOps tools included`
Q170) What Are the Vagrant And Its Uses?
Vagrant used to virtual box as the hypervisor for virtual environments and in current scenario it is also supporting the KVM. Kernel-based Virtual Machine.
Vagrant is a tool that can created and managed environments for the testing and developing
software. Devops Training Free Demo
Q171) How to Devops Is Helpful To Developers ?
To fix the bug and implements new features of the quickly. It provides to the clarity of communications among team members.
Q172) Name of The Popular Scripting Language Of the Devops ?
Q173) List of The Agile Methodology Of the Devops?
DevOps is a process
Agile is the same as DevOps.
Separate group are framed.
It is problem solving.
Developers managing production
DevOps is the development-driven release management
Q174) Which Are The Areas of Devops Are Implemented?
Creation of the productions feedback and its development
IT Operations development
Q175) The Scope For SSH ?
SSH is a Secure Shell which provides users with a secure, encrypted mechanism to log into systems and transfer files.
To log out the remote machine and worked on command line.
To secure encrypted of the communications between two hosts over an insecure network.
Q176) What Are The Advantages Of Devops With Respect To the Technical And Business Perspective?
Software delivery is continuous.
Reduces Complexity in problems.
Faster approach to resolve problems
Manpower is reduced.
High rate of delivering its features
Stable operating environments
More time gained to Add values.
Enabling faster feature time to market
Q177) What Are The Core Operations Of the Devops In Terms Of the Development And Infrastructure ?
The core operations of DevOps
Deployment With infrastructure
Q178) What Are The Anti-patterns Of Devops?
A pattern is common usage usually followed. If a pattern of thecommonly adopted by others does not work for your organization and you continue to blindly follow it, you are essentially adopting an anti-pattern. There are myths about DevOps.
Some of them include
DevOps is a process
Agile equals DevOps
We need a separate DevOps group
Devops will solve all our problems
DevOps means Developers Managing Production
DevOps is Development-driven release management
DevOps is not development driven.
DevOps is not IT Operations driven.
Q179) What are The Most Important Thing Devops Helps Us Achieve?
The most important thing that the DevOps helps us achieve is to get the changes into production as quickly as possible while that minimizing risks in software quality assurance and compliance. This is the primary objective of DevOps.
For example clear communication and better working relationships between teams i.e. both of the
Ops team and Dev team collaborate together to deliver good quality software which in turn leads to higher customer satisfaction.
Q180) How Can Make a Sure New Service Is Ready For The Products Launched?
Q181) How to All These Tools Work for Together?
Given below is a generic logical of the flow where everything gets are automated for seamless delivery. However, its flow may vary from organization to the organization as per the requirement.
Developers develop the code and this source code is managed by Version Control System of the tools like Git etc.
Developers send to this code of the Git repository and any changes made in the code is committed to this Repository.
Jenkins pulls this code from the repository using the Git plugin and build it using tools like Ant or Maven.
Configuration managements tools like puppet deploys & provisions testing environment and then Jenkins releases this code on the test to environment on which testing is done using tools like selenium.
Once the code are tested, Jenkins send it for the deployment on production to the server (even production server are provisioned & maintained by tools like puppet).
After deployment Its continuously monitored by tools like Nagios.
Docker containers provides testing environment to the test the build features.
Q182) Which Are The Top Devops Tools?
The most popular DevOps tools are mentioned below
Git Version Control System tool
Jenkins Continuous Integration tool
Selenium Continuous Testing tool
Puppet, Chef, Ansible are Configuration Management and Deployment tools
Nagios Continuous Monitoring tool
Docker Containerization tool
Q183) How to Devops Different From the Agile / Sdlc?
Agile are the set of the values and principles about how to produce i.e. develop software.
Example if you have some ideas and you want to the turn those ideas into the working software, you can use the Agile values are principles as a way to do that. But, that software might only be
repeatably move that software into the production infrastructure, in a safe and simple way. To do that you needs are DevOps tools and techniques.
You can summarize by saying Agile of the software development methodology focuses on the development for software but DevOps on the other hand is responsible for the development as
blog that will give you more information of the evolutions of the DevOps.
Q184) What Is The Need For Devops?
According to me, this should start by explaining the general market trend. Instead of the releasing big sets of the features, companies are trying to see if small features can be transported to their customers through a series of the release trains. This have many advantages like quick feedback from the customers, better quality of the software etc. which in turn leads to the high customer satisfaction.
achieve this, companies are required to
Increase deployment frequency
Lower failure rate of new releases
Shortened lead time between fixes
Faster mean time to recovery of the event of new release crashing
Q185) What is meant by Continuous Integration?
several times a day. Each check-in then verified by an automated build, allowing teams to the
detect problems early.
Q186) Mention some of the useful plugins in Jenkins.
Below, I have mentioned some important are Plugins:
Maven 2 project
Q187) What is Version control?
Its the system that records changes are the file or set of the files over time so that you can recall specific versions later.
Q188) What are the uses of Version control ?
Revert files back to a previous state. Revert to the entire project back to a previous state.
Compare changes over time.
See who last modified the something that might to be causing a problem.
Who introduced an issue and when.
Q189) What are the containers?
They provide isolation among processes
Q190) What is meant by Continuous Integration?
It is a development practice that requires are developers to integrate code into the shared repository several times a day.
Pointer (PTR) record to used for the revers DNS (Domain Name System) lookup.