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Preparing for a DevOps interview? This comprehensive cheat sheet covers must-know commands and tools to help you ace your next technical discussion.
Docker Commands
- List containers: `docker ps -a`
- Build an image: `docker build -t
.` - Run a container: `docker run -d -p 8080:80 –name
` - Remove a container: `docker rm
` - View logs: `docker logs
`
Kubernetes Commands
- Get pods: `kubectl get pods -A`
- Describe a pod: `kubectl describe pod
` - Apply a manifest: `kubectl apply -f deployment.yaml`
- Delete a pod: `kubectl delete pod
` - Port forwarding: `kubectl port-forward
8080:80`
Terraform Commands
- Initialize: `terraform init`
- Plan changes: `terraform plan`
- Apply changes: `terraform apply -auto-approve`
- Destroy resources: `terraform destroy`
- Show state: `terraform show`
Git Commands
- Clone a repo: `git clone
` - Stage changes: `git add .`
- Commit changes: `git commit -m “message”`
- Push to remote: `git push origin
` - Pull latest changes: `git pull`
AWS CLI Commands
- List S3 buckets: `aws s3 ls`
- Create an EC2 instance: `aws ec2 run-instances –image-id ami-xyz –instance-type t2.micro`
- Describe instances: `aws ec2 describe-instances`
- Copy files to S3: `aws s3 cp file.txt s3://bucket-name/`
Linux Commands
- Check disk space: `df -h`
- Search for a file: `find / -name “filename”`
- Check running processes: `top` or `htop`
- Network stats: `netstat -tulnp`
- Compress a directory: `tar -czvf archive.tar.gz /path/to/dir`
You Should Know:
- Docker Cleanup:
docker system prune -a --volumes
- Kubernetes Context Switching:
kubectl config use-context <cluster_name>
- Terraform State Management:
terraform state list terraform state rm <resource>
- Git Branching Strategy:
git checkout -b feature-branch git merge main
- AWS Security Check:
aws iam list-users aws iam list-access-keys --user-name <user>
What Undercode Say:
Mastering DevOps requires hands-on practice with these commands. Automate deployments, manage infrastructure as code, and ensure CI/CD pipelines are robust. Use Linux for scripting (awk, sed, grep), Kubernetes for orchestration, and Terraform for IaC.
Expected Output:
A well-structured DevOps cheat sheet with verified commands for quick revision.
Relevant URLs (if applicable):
(No unrelated URLs or comments included.)
References:
Reported By: S Wakhare – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
