Devops Interview Preparation Tips | DevOps Interview Tips | Top 8 Devops Interview Prep Tips

Let us quickly review the steps needed for successful interview experience after Devops course is done. This is based on my personal experience and also my ex-students feedback who had gone through coaching program and successfully placed at various customers all over US.

1. Preparation, preparation and preparation..

• Plan how you will prepare for the interview. Click here to see the popular DevOps tools list.
• Have a good resume and review with coach first.. 

• Start using Devops interview notes...You need to daily refresh all the questions and answers from this document.

2. Apply out of state or out of city positions first
Do not apply local positions at least for your first 5 interviews. You need to get familiar with attending interviews first..So you don't want to loose local opportunity.

3. Do not wait for the perfect time to apply for the job 
Time is now! Sometimes people think that once I am done with this and that, I will start applying for a job. Believe me, that perfect time will never come again..

4. Go extra mile
Prepare outside besides what was given during coaching sessions... You need to master all the interview questions and then start looking at google search or youtube for more on devops interview questions.

5. Share and Network  
Collaborate. Always share interview questions to the group every time you attend interviews. Also try to find answers for every question you don't know answer for. Discuss lab exercises with friends and Collaboration is the key.

6. Be open minded and learn every day
You need to learn new things every day....Always have the willingness to learn new things. You can subscribe to LinuxAcademy for Devops courses.

7. Believe that you are true DevOps champion
If you don't believe, who else can believe? You need to talk DevOps, walk DevOps and sleep DevOps.. You have done all the lab exercises. Not many people out there in the Market know all these tools.

8. Make more mistakes now
Always attend more interviews, face more failures in the beginning. Failures are stepping stone of the success. Learn how to fail in the interview..Then you will always do better job after a few interviews...DO NOT GIVE UP!!!

AWS/Azure DevOps Training August 2020

Are you in IT? Tired of your work? Not able to make a progress? 

Are you not having a job? Looking for a break in IT? No Worries.. 

Are you interesting in learning about DevOps? 

DevOps is THE hot skill in US. Currently almost all the employers are struggling to get a right resource in their teams who can do the DevOps and automation work..You could be that person by attending my coaching program.

DevOps Training In-Person Batches at Frisco, Plano, Dallas and Fort Worth Areas

Weekend online batch from Aug 9th on Saturdays 09:45 AM to 11:15 AM & Sundays 10:30 AM to 12:00 PM 

Weekday Online batch -  August 11th on Every Tuesdays and Thursdays 06:00 pm CST to 07:30 pm CST

DevOps Training highlights:

- Comprehensive hands on knowledge on Git, Jenkins, TeamCity, Maven, SonarQube, Nexus, Terraform, Ansible, Puppet, Docker on AWS and Azure.

- 20+ yrs IT exp, 5+ Yrs in DevOps/Cloud/Automation.

- Many students already placed in reputed companies from my coaching program successfully.

- Working as a Sr.DevOps Coach/Architect in a one of the top IT services companies in USA.

- Unique program...less theory, more hands on lab exercises...in Person class room training

- Resume preparation will be done with candidates personally.

- One-to-one Interview coaching.

- Coaching is purely hands on with 101% job relevant.

- 100% Job assistance.

- Both weekday(on-line) & weekend batches available.

- Coached about  620+ people successfully for past 2+ years and many of my students got placed with many large enterprises in DFW, Chicago, Florida, Seattle, Bay area, Ohio and NY areas..

Contact no: 469-733-5248
Email - devops.coaching@gmail.com
Contact: AK

How to back up Jenkins Jobs and Configurations

As you all know Jenkins does not use a database to store its configuration, It uses XMLs files to store. It is very important to take back up all jobs, configs, logs and plug-ins.

Jenkins thin backup plug-in is what we will be using for taking backups of Jenkins data.

Install plug-in:
It backs up all the data based on your schedule and it handles the backup retention as well.
To get started, first install the plugin.
1. Go to Manage Jenkins –> Manage Plugins
2. Click the Available tab and search for “Thin backup”

3. install plug-in and restart Jenkins.

How to take backups?

As plug-in is installed, we need to configure how we will be doing backups in Jenkins.

1. Go to manage Jenkins->ThinBack

 

2. Click on settings. Enter info as needed for the backup.

3. after saving, click Backup Now link to run the back up to make sure it is creating data where needed.

4. Now you should see the back up folder.

Welcome To DevSecOps Coaching | Coaching pre-requisites and some Agile and DevOps concepts basics links

Welcome to DevOps Coaching Program! Thanks for showing interest in joining the program. Please go through the useful links before joining the coaching sessions live with Coach.

Please click the below link to learn more about How the coaching program works.

https://www.coachdevops.com/2019/04/devops-coaching-model-information.html

Pre-requisites:
https://www.coachdevops.com/2019/01/pre-requisites-before-starting-devops.html

Once you create AWS account, GitHub and Bitbucket account using the above links, do the following to secure your AWS account:

https://www.cidevops.com/2018/09/how-to-enable-multi-factor.html

Learn more about AWS cloud in less than10 mins..
https://www.youtube.com/watch?v=r4YIdn2eTm4

Basic concepts to go through before you attend classes:

Why we need DevOps? Why companies are migrating to Cloud/DevOps?
https://www.cidevops.com/2019/05/why-we-need-devops-why-devops-is.html

If you are new to IT, please learn more about Agile, DevOps from the below links:

https://www.tutorialspoint.com/agile/index.htm
https://www.edureka.co/blog/what-is-devops/
https://www.edureka.co/blog/devops-tutorial - nice read on DevOps

What is DevOps

https://www.youtube.com/watch?v=_I94-tJlovg&t=2s

Difference between Waterfall and Scrum 

https://www.youtube.com/watch?v=9TycLR0TqFA

 

Top 10 DevOps tools to learn in 2025

https://www.coachdevops.com/2020/04/top-10-devops-popular-tools-popular.html

Top DevOps Skills for 2025 | Skills required to become a DevOps engineer

https://www.coachdevops.com/2021/02/top-devops-skills-for-2021-skills.html

How to setup SSH keys | How to setup Repo in GitHub and Setup Java Project in GitHub | How to add a Java Web App in GitHub using Maven

GitHub is one of the popular git-based version control systems. GitHub is very good example for Software-as-a-service, hosted on cloud for storing and sharing code. 

We will learn how to create a Java Project using Maven and push Java Project into GitHub from Ec2 instance. Let us learn how to create SSH keys and securely connect to gitHub from EC2 instance. 

Git is a purely distributed version control system. Click here to learn more about Git and its advantages over other SCMs.

Pre-requisites:

1. GitHub account

2. Git client installed

3. Connect to your Jenkins EC2 instance

Step # 1 - Create private repository in GitHub

Go to https://github.com/

Click on New to create a new repo 

Also choose initialize with repository with a README option.

Step # 2 Create SSH keys from your Jenkins EC2 machine

Login to your Jenkins EC2 instance using Git bash. (make sure you are connected to Jenkins instance)

make sure you are connected to EC2 instance by ssh url. 

Type ssh-keygen (and then click on enter four button times, do not give any password). 

ssh-keygen command will generate two keys - public keys and private keys. We need to upload only the public keys into GitHub.

If you already have keys generated, you can use the existing key, you don't have to overwrite the existing key. 

Now copy the content of public key by executing below command in Git bash:

sudo cat ~/.ssh/id_ed25519.pub

Step # 3 - Upload SSH Keys into GitHub

Go to GitHub, click on Settings.

Copy SSH keys Key section and then click on Add SSH key.

Step # 4 - Clone Repo locally

Now click on the Cat icon on your top left to go back to repo you just created.
Click on the repo you created in step # 1, click on Code, under SSH

 

Copy the SSH url and go to your EC2 instance using git bash and perform below command:

git clone <paste the ssh url >

type yes to connect

After you clone, you should see something below:

type below command to list the directory
ls -al
The above command should list the directory you have cloned.

Now go into repo folder (red circled like above) you have cloned.

cd <replace_your_repo_folder_name>

Step # 5 - Create Java Web App using Maven

use below maven command to create Java Web App using Maven. Maven is the build for creating and building java projects. Click here to know more about Maven.

mvn archetype:generate -DgroupId=com.dept.app -DartifactId=MyWebApp -DarchetypeArtifactId=maven-archetype-webapp -DinteractiveMode=false

Step # 6 - Push Java Web App using Git commands into GitHub

type below command to see the new folder called MyWebApp
ls -al

type  below command to see the newly created project in red color

git status

Now add the newly created folder by executing below command:

git add  *

Now make sure all the files are moved to staging area, when you execute below command:
git status

git config --global user.name "your github user_id"

git config --global user.email "youremailid"

Perform below command to commit the changes to local repository first.

git commit -m "my first project check-in to GitHub"

Now perform below command to push from local repository to remote repository. 

git push

 

Verify code changes in GitHub

Now to GitHub and click on the repo, you will see your commits.

You can also watch the videos of the above lab exercise in my YouTube channel given below:

How to connect to an EC2 instance from Windows or IMac?

Pre-requisites:

1. SSH keys(for e.g., myEc2Jenkins.pem) already downloaded in your local machine, preferably in downloads folder.
2. Your EC2 instance is up and running in AWS
3. For windows laptop, you need to use Git bash. You can install Git by downloading from this URL - https://git-scm.com/downloads

Steps to connect to EC2 instance:

1. Go to AWS console.
2. Click on EC2, click on running instances link

3. Select the checkbox of EC2 you would like to connect to.
4. Click on Action. Copy the url from SSH which looks like below:
For e.g.
ssh -i "mykey.pem" ubuntu@dns_name.compute.amazonaws.com



For windows machine(and also for iMac))

1. Open Git bash
2. type pwd
It may print your directory in git bash
3. Now type cd downloads
4. make sure you have keys in the downloads directory by typing the below command:
  dir  *.pem

The above command should list all the pem files in the downloads directory.

only for Macbook pro laptops, you need to perform additional step
chmod 400 myJenkinsEc2KKey.pem

5. Now paste the url from step # 4 above
ssh -i "mykey.pem" ubuntu@dns_name.compute.amazonaws.com

type yes

6. now you should be in AWS cloud, screen should tell you something like this:

Last login: Sun month 18 19:01:21 2018 from 64.183.186.78
ubuntu@ip-172-31-26-96:~$