What is DevOps? Introduction to DevOps 7

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

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Q145) Success factor for the Continuous Integration

Maintain Code Repository

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

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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

Q150) What is Application Containerization?

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.

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Q151) syntax for building docker image

Q152) running docker image

<hostvolume>:<containervolume> imagename:version

Q153) How to log into a container

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.

Enforcement

Cooperating Enablement

Version Control Friendly

Enable Change Control Processes

Q157) List out the 5 Best Software Configuration Management Tools.

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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

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Q161) Advantages of VCS

  1. Multiple people can work on the same project and it helps us to keep track of the files and documents and their changes.
  2. We can merge the changes from multiple developers to single stream.
  3. Helps us to revert to the earlier version if the current version is broke.
  4. Helps us to maintain multiple version of the software at the same location without rewriting.

Q162) Advantages of DevOps

Below are the major advantages

Technical:

  1. Continuous software delivery
  2. Less Complexity
  3. Faster Resolution

Business:

  1. Faster delivery of the features
  2. More stable operating environment
  3. Improved communication and collaboration between various teams
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Q163) Use cases where we can use DevOps

  1. Explain the legacy / old procedures that are followed to develop and deploy software
  2. Problems of that approach
  3. 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

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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

Highly scalable

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.

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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.

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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`

Selenium

Puppet

Chef

Git

Jenkins

Ansible

Q170) What Are the Vagrant And Its Uses?

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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

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