Sample Game App Deployment on EKS cluster

 https://padmakshi.medium.com/setting-up-an-eks-cluster-and-deploying-a-game-application-a-step-by-step-guide-08790e0be117

Minikube Setup on AWS EC2 instance

Create AWS EC2 instance and execute below commands as a root.

Instance Type: t2.medium

     1  yum update -y

    2  yum install docker -y

    3  systemctl enable docker

    4  systemctl start docker

    5  docker ps

    6   curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl

    7   chmod +x ./kubectl

    8   sudo mv ./kubectl /usr/local/bin/kubectl

    9  kubectl

    10  curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64

    11  sudo install minikube-linux-amd64 /usr/local/bin/minikube && rm minikube-linux-amd64

    12  ls -lrt

    13  minikube

    14  minikube start --force --driver=docker

    [root@ip-172-31-29-80 ~]# kubectl run mywebapp --image=nginx

    pod/mywebapp created

DevOps GitHub Repo gfg

 DevOps Basic:

https://github.com/mathesh-me/gfg-devops/tree/main

Ansible:

https://github.com/mathesh-me/ansible-study-guide

Jenkins:

https://github.com/mathesh-me/jenkins-learning/tree/main

Docker:

https://github.com/mathesh-me/docker-learning

K8s:

https://github.com/mathesh-me/cka-prep-documentation

Best Youtube Course: https://www.youtube.com/@AbhishekVeeramalla

Git Commands

 1. 𝗴𝗶𝘁 𝗶𝗻𝗶𝘁: Initializes a new Git repository in the current directory.

2. 𝗴𝗶𝘁 𝗰𝗹𝗼𝗻𝗲 [𝘂𝗿𝗹]: Clones a repository into a new directory.

3. 𝗴𝗶𝘁 𝗮𝗱𝗱 [𝗳𝗶𝗹𝗲]: Adds a file or changes in a file to the staging area.

4. 𝗴𝗶𝘁 𝗰𝗼𝗺𝗺𝗶𝘁 -𝗺 "[𝗺𝗲𝘀𝘀𝗮𝗴𝗲]": Records changes to the repository with a descriptive message.

5. 𝗴𝗶𝘁 𝗽𝘂𝘀𝗵: Uploads local repository content to a remote repository.

6. 𝗴𝗶𝘁 𝗽𝘂𝗹𝗹: Fetches changes from the remote repository and merges them into the local branch.

7. 𝗴𝗶𝘁 𝘀𝘁𝗮𝘁𝘂𝘀: Displays the status of the working directory and staging area.

8. 𝗴𝗶𝘁 𝗯𝗿𝗮𝗻𝗰𝗵: Lists all local branches in the current repository.

9. 𝗴𝗶𝘁 𝗰𝗵𝗲𝗰𝗸𝗼𝘂𝘁 [𝗯𝗿𝗮𝗻𝗰𝗵]: Switches to the specified branch.

10. 𝗴𝗶𝘁 𝗺𝗲𝗿𝗴𝗲 [𝗯𝗿𝗮𝗻𝗰𝗵]: Merges the specified branch's history into the current branch.

11. 𝗴𝗶𝘁 𝗿𝗲𝗺𝗼𝘁𝗲 -𝘃: Lists the remote repositories along with their URLs.

12. 𝗴𝗶𝘁 𝗹𝗼𝗴: Displays commit logs.

13. 𝗴𝗶𝘁 𝗿𝗲𝘀𝗲𝘁 [𝗳𝗶𝗹𝗲]: Unstages the file, but preserves its contents.

14. 𝗴𝗶𝘁 𝗿𝗺 [𝗳𝗶𝗹𝗲]: Deletes the file from the working directory and stages the deletion.

15. 𝗴𝗶𝘁 𝘀𝘁𝗮𝘀𝗵: Temporarily shelves (or stashes) changes that haven't been committed.

16. 𝗴𝗶𝘁 𝘁𝗮𝗴 [𝘁𝗮𝗴𝗻𝗮𝗺𝗲]: Creates a lightweight tag pointing to the current commit.

17. 𝗴𝗶𝘁 𝗳𝗲𝘁𝗰𝗵 [𝗿𝗲𝗺𝗼𝘁𝗲]: Downloads objects and refs from another repository.

18. 𝗴𝗶𝘁 𝗺𝗲𝗿𝗴𝗲 --𝗮𝗯𝗼𝗿𝘁: Aborts the current conflict resolution process, and tries to reconstruct the pre-merge state.

19. 𝗴𝗶𝘁 𝗿𝗲𝗯𝗮𝘀𝗲 [𝗯𝗿𝗮𝗻𝗰𝗵]: Reapplies commits on top of another base tip, often used to integrate changes from one branch onto another cleanly.

20. 𝗴𝗶𝘁 𝗰𝗼𝗻𝗳𝗶𝗴 --𝗴𝗹𝗼𝗯𝗮𝗹 𝘂𝘀𝗲𝗿.𝗻𝗮𝗺𝗲 "[𝗻𝗮𝗺𝗲]" 𝗮𝗻𝗱 𝗴𝗶𝘁 𝗰𝗼𝗻𝗳𝗶𝗴 --𝗴𝗹𝗼𝗯𝗮𝗹 𝘂𝘀𝗲𝗿.𝗲𝗺𝗮𝗶𝗹 "[𝗲𝗺𝗮𝗶𝗹]": Sets the name and email to be used with your commits.

21. 𝗴𝗶𝘁 𝗱𝗶𝗳𝗳: Shows changes between commits, commit and working tree, etc.

22. 𝗴𝗶𝘁 𝗿𝗲𝗺𝗼𝘁𝗲 𝗮𝗱𝗱 [𝗻𝗮𝗺𝗲] [𝘂𝗿𝗹]: Adds a new remote repository.

23. 𝗴𝗶𝘁 𝗿𝗲𝗺𝗼𝘁𝗲 𝗿𝗲𝗺𝗼𝘃𝗲 [𝗻𝗮𝗺𝗲]: Removes a remote repository.

24. 𝗴𝗶𝘁 𝗰𝗵𝗲𝗰𝗸𝗼𝘂𝘁 -𝗯 [𝗯𝗿𝗮𝗻𝗰𝗵]: Creates a new branch and switches to it.

25. 𝗴𝗶𝘁 𝗯𝗿𝗮𝗻𝗰𝗵 -𝗱 [𝗯𝗿𝗮𝗻𝗰𝗵]: Deletes the specified branch.

26. 𝗴𝗶𝘁 𝗽𝘂𝘀𝗵 --𝘁𝗮𝗴𝘀: Pushes all tags to the remote repository.

27. 𝗴𝗶𝘁 𝗰𝗵𝗲𝗿𝗿𝘆-𝗽𝗶𝗰𝗸 [𝗰𝗼𝗺𝗺𝗶𝘁]: Picks a commit from another branch and applies it to the current branch.

28. 𝗴𝗶𝘁 𝗳𝗲𝘁𝗰𝗵 --𝗽𝗿𝘂𝗻𝗲: Prunes remote tracking branches no longer on the remote.

29. 𝗴𝗶𝘁 𝗰𝗹𝗲𝗮𝗻 -𝗱𝗳: Removes untracked files and directories from the working directory.

Linux Troubleshooting

 

 https://github.com/mismailzz/Linux-Troubleshooting-Scenarios-with-solutions

 

Section 1 - System Access Troubleshooting

•        Server is Not Reachable

•        Cannot Connect to a Website or an Application

•        Cannot SSH as root or a Specific User

•        Firewall Issue

•        Terminal Client is not working

•        Cannot Connect using Putty to a VirutalBox VM

 

Section 2 - FileSystem Troubleshooting

•        Cannot cd into a Directory

•        Cannot Open a File or Run a Script

•        Having Trouble Finding Files and Directories

•        Cannot Create Links

•        Cannot Write to a File

•        Cannot Delete, Copy, Move or Rename a File

•        Cannot Change File Permissions or View Other Users Files

•        Disk Space Full or Add More Disk Space

•        Add Disk and Create Standard Partition

•        Add Disk and Create Standard Partition

•        Add Disk and Create LVM Partition

•        Extend Disk with LVM

•        How to Delete Old Files

•        FileSystem is Corruption

•        Corruption in /etc/fstab

•        Script to Delete Old Files

•        Handouts

 

Section 3- System Administration Troubleshooting

•        Running Out of Memory

•        Add Swap Space

•        System Rebooted or Process Restarted

•        Unable to get IP Address

•        IP Assigned but not Reachable

•        Having Trouble using vi Editor

•        Cannot Run Certain Commands

•        Cannot Change Password

•        User Account has no Home Directory

•        How to Change Every Instance of a Word in a File

•        How to Use sed Command

•        How to Kill a User Terminal or Process

•        Recover Root Password

•        SOS Report

•        List of Users Logged in by Date

•        System is Running Slow

 

 

 

Ansible Playbooks Practise

 https://github.com/do-community/ansible-practice/blob/main/playbook-01.yml

Important Link for Terraform Project

 https://www.linkedin.com/pulse/create-vpcsubnetsec2-instance-using-terraform-srini-b-dcjuc/

https://www.linkedin.com/pulse/day-66-terraform-hands-on-project-build-your-own-aws-sayali-shewale/

https://medium.com/@saurabhdahibhate50/terraform-hands-on-project-d2105bbc0c62

https://helenchukwukelu.hashnode.dev/terraform-project-for-bbeginners

https://blog.softup.co/how-we-structure-our-terraform-code/

https://blog.devops.dev/devops-project-12-infrastructure-as-code-with-terraform-in-aws-407165d3d801

=========

Important Project:

https://medium.com/@e-miguel/project-1-host-a-dynamic-ecommerce-website-on-aws-with-terraform-ea93ef2ba15f

https://medium.com/@faisalkuzhan/day-55-90-terraform-interview-questions-e8ff859220d5

==========

Manual AWS PRoject:

https://medium.com/@e-miguel/host-a-dynamic-car-rental-web-application-on-aws-f4f5ed700feb