Interviews are tough and the stress that you gain out of this is quite difficult to handle. If you want to take this stress out of your life, then follow our DevOps Interview questions that are created by the best individuals who are not only talented but also are skilled enough to determine the best questions and answers for you. This makes your life much easier and smoother wherein you will get to know what kind of questions are generally asked in the interviews and how to answer them efficiently so that you crack the interview.
DevOps is a complete set of software that is used to develop practices that are a combination of software development (Dev) and IT operations (Ops) to reduce the time it takes to process all the requests in the system. It helps in shortening the life cycle of the system development applications while delivering fixes, updates, as well as features often that abides by your business objectives. It was developed by a Belgian consultant named Patrick Debois, who is also a prominent project manager and an agile practitioner. If you are well versed in coding, building, testing, packaging, releasing, configuring, and monitoring, then you will definitely have the best career in this specific field.
|Basic premise||A collaboration of development and operations teams. It is more of a cultural shift.|
|Related to||Agile methodology|
|Priorities||Resource management, communication, and teamwork|
|Benefits||Speed, functionality, stability, and innovation|
2. Mention what the key aspects or principles behind DevOps are?
The key aspect or principle behind DevOps is
The core operations of DevOps are
A simpler scripting language will be better for a DevOps engineer. Python seems to be very popular.
DevOps can be helpful to developers to fix the bug and implement new features quickly. It also helps for clearer communication between the team members.
Some of the popular tools for DevOps are
I have used SSH to log into a remote machine and work on the command line. Besides this, I have also used it to tunnel into the system to facilitate secure encrypted communications between two untrusted hosts over an insecure network.
My approach to handling revision control would be to post the code on SourceForge or GitHub so everyone can view it. Also, I will post the checklist from the last revision to make sure that any unsolved issues are resolved.
The types of HTTP requests are
If a Linux-build-server suddenly starts getting slow, you will check for the following three things
|RAM-related issues, Disk I/O read-write issues, Disk Space-related Issues, etc.|
|Check for Application log file OR application server log file, system performance issues, Web Server Log – check HTTP, tomcat lo, JBoss, or WebLogic logs to see if the application server response/receive time is the issues for slowness, Memory Leak of any application|
|Antivirus-related issues, Firewall related issues, Network issues, SMTP server response time issues, etc.|
The most important components of DevOps are:
Popular Cloud computing platforms used for DevOps implementation are:
A build is a method in which the source code is put together to check whether it works as a single unit. In the build creation process, the source code will undergo compilation, inspection, testing, and deployment.
Puppet is a useful project management tool. It helps you to automate administration tasks.
Two-factor authentication is a security method in which the user provides two ways of identification from separate categories.
A canary release is a pattern that reduces the risk of introducing a new version of software into the production environment. It is done by making it available in a controlled manner to a subset of the user. Before making it available to the complete user set.
You need to conduct continuous testing to ensure that the new service is ready for production.
Selenium can be used to execute the same or different test scripts on multiple platforms and browsers concurrently to achieve distributed test execution. Selenium allows testing under different environments, saving the execution time remarkably.
The driver.close command closes the focused Browser window. But, the driver.quit calls the driver.dispose method which closes all browser windows and also ends the WebDriver session.
Yes, it is. With the help of a Jenkins plugin, we can build projects one after the other. If one parent job is carried out, then automatically other jobs are also run. We also have the option to use Jenkins Pipeline jobs for the same.
The way to secure Jenkins is mentioned below.
To create a backup, all we need to do is to periodically back up our JENKINS_HOME directory. This contains all of the build configurations of our job, our slave node configurations, and our build history. To create a backup of our Jenkins setup, just copy this directory. We can also copy a job directory to clone or replicate a job or rename the directory.
Jenkins Pipeline can be defined as a suite of plugins supporting both implementation and integration of Jenkins continuous delivery pipeline.
Continuous integration or continuous delivery pipeline consists of build, deploy, test, and release. The pipeline feature is very time-saving. In other words, a pipeline is a group of build jobs that are chained and integrated with a sequence.
Every Puppet node or Puppet agent has got its configuration details in Puppet Master, written in the native Puppet language. These details are written in a language that Puppet can understand and are termed Puppet Manifests. These manifests are composed of Puppet codes, and their filenames use the .pp extension.
For instance, we can write a manifest in Puppet Master that creates a file and installs Apache on all Puppet agents or slaves that are connected to the Puppet Master.
To configure systems with Puppet in a client or server architecture, we have to use the Puppet agent and the Puppet master applications. In a stand-alone architecture, we have to use the Puppet apply application.
It is the main directory for code and data in Puppet. It consists of environments (containing the manifests and modules), a global modules directory for all the environments, and your Hiera data.
With the enhancements taking place in this industry, it has become easier for you to apply for jobs in this particular sector. If you want to have a better future in your life, then this is the best field for you that you can choose and enjoy the benefits offered by various companies. Choosing a career in this specific field won’t disappoint you when it comes to gaining knowledge and earning money. For a fresher, you can earn up to 70,000 to 80,000 dollars per annum working in this field, and with experience, you can earn up to 140,000 dollars per annum based on the skills and talent you have.
If you want to see yourself in a better place in the future, then choosing this field to grow is definitely not a bad option for you. You can crack the interviews easily with the help of our DevOps interview questions and answers, and earn yourself a designation in a reputed company.