Devops/SRE Interview Questions & Answers

💡 💡 💡 💡 💡 In this video I have discussed about interview questions and answers Also recently I have uploaded video on CICD pipeline to deploy java based application, which might help in interviews - https://youtu.be/adG0vq5boL8 Below are the questions which I have discussed 💥 💥 Time-stamps 💥 💥 0:10 Intro 0:54 Linux Commands/Shell Scripting Questions ✔️ 00:56 Command to find empty files in a given directory? ✔️ 03:15 Commands you will use it for configuring ssh connectivity between 2 machines and what files will be present in .ssh folder? ✔️ 08:22 How to schedule a shell script in unix machines? ✔️ 10:40 Command to get load average ? ✔️ 11:18 Need to identify IP addresses in log file and count of ip addresses in log file? ( detailed video https://youtu.be/WDjbMucvEmk ) ✔️ 14:42 What is command for checking the running process? how to get PID of process? ✔️ 15:56 Command to get whether certain port is listing or not? ✔️ 18:47 How to identify the number of params that has been sent to shell script? ✔️ 20:32 Command to delete empty line in a file? ✔️ 22:06 What is exit status? ✔️ 23:50 Given machine, how will you identify which machine it is? 24:39 - Git/Github Questions ✔️ 24:41 What is git reset ? Types of reset ? ✔️ 33:29 How to delete local branch and remote branch in git ? ✔️ 36:44 Difference between git diff and git status ? ✔️ 38:45 What are hooks in git? ( datree video - https://youtu.be/lUQaA9hvEX4 ) ✔️ 48:38 What is the importance .git directory? ✔️ 49:47 What are the branches, diff between remote and local branches? ✔️ 54:44 What Branching strategy that you are familiar with? ✔️ 59:11 What PR (Pull request) is? what's the importance of PR? ✔️ 1:04:01 Which version of git you have used? ✔️ 1:04:45 What is git squash? ✔️ 1:11:00 Command to list all commits? 1:11:38 - Maven Questions ✔️ 1:11:40 What are things you need to set, if you want download dependency from private repository ? ✔️ 1:16:34 Command to skip the test cases in maven ✔️ 1:19:34 What is multi module project? ✔️ 1:23:57 What is the importance of dependency management? ✔️ 1:27:36 What is the default value of packaging tag? What other values for other artifact types? ✔️ 1:29:06 What are GAV’s? ✔️ 1:29:38 Is there way by which we can set local repository as some other custom directory, other than .m2? 1:32:24 - Docker Questions ✔️ 1:32:25 How to configure docker private registry? ✔️ 1:38:45 Types of network in docker? if you don't specify network to deploy on which network the container will be created? ✔️ 1:40:30 Explain a sample dockerfile that you have used in your project? ( detailed video - https://youtu.be/zNQmHfgw01Q ) ✔️ 1:48:08 Can we launch Linux containers windows and vice versa? ✔️ 1:50:19 What does ONBUILD instruction do in Dockerfile? ✔️ 1:52:46 What is the use of .dockerignore file? ✔️ 1:56:49 How to delete all stopped containers and unused images command for that? ✔️ 1:59:45 Is it good to use docker compose in production? ✔️ 2:00:50 How to parametrize base image tag? ✔️ 2:04:16 Building Dockerfile in directory which has large file is good practice? 2:05:08 - Ansible Questions ✔️ 2:05:09 Why ansible ? What makes ansible powerful than other tools like chef and puppet? ✔️ 2:11:17 5 modules that you have worked on? Can we create custom module ? ( doc - https://docs.ansible.com/ansible/2.3/dev_guide/developing_modules_general.html ) ✔️ 2:13:20 What is dynamic inventory in ansible? ✔️ 2:15:33 Lets say I have both Ubuntu and centos machines as nodes I want install application tree using same playbook, how would you approach this scenario? ✔️ 2:22:22 How to handle prompts with ansible playbook? ✔️ 2:29:19 What is ansible galaxy? ✔️ 2:30:40 What are adhoc commands? 2:33:14 - Jenkins Questions ✔️ 2:33:15 How to set Jenkins build to fail based specific word in console output ? ✔️ 2:39:35 What are active and reactive parameters (Dynamic parameterization) in Jenkins ? ✔️ 2:46:56 How to customize the build number display to something else in Jenkins job page? ✔️ 2:50:29 What are multi branch pipeline? ✔️ 2:53:50 What is shared library in Jenkins ? ✔️ 3:04:24 What type of Jenkinsfile you have worked on? ✔️ 3:05:08 In master slave setup if I want run job on specific node is is possible? ✔️ 3:06:25 what is the importance of Jenkins secrets? ✔️ 3:08:50 How do you take Jenkins backup? ✔️ 3:11:13 Importance of post block? ✔️ 3:13:31 Can we have job for pr and once merge is done the source branch should be deleted? ☎️📞If you want to book a call ( paid ) with me then you can refer below form📃📅 https://forms.gle/p7HLbuZAnYTEj13n7 📂Git Repositories Used In Interview📂 All the repo used video can be found in - https://github.com/DeekshithSN ⭐️If you like Datree, give it a star on GitHub!⭐ - https://github.com/datreeio/datree If you like the video like ✅, share 🔁 and subscribe 🔔 You can follow me on Telegram group - https://t.me/joinchat/0ypHTOfCX5QzZTA1 LinkedIn - https://www.linkedin.com/in/deekshith-sn-972532a1/