A thread with 20+ mid-level to advanced Docker interview questions and answers π³
1/ What is a Docker Compose, and why is it useful? π’
A. Docker Compose is a tool for defining and running multi-container Docker applications. It's useful for managing complex applications with multiple services, enabling easy orchestration. #Docker #Interview
2/ What is Docker Swarm, & how does it differ from Kubernetes? π
A. Docker Swarm is Docker's native orchestration tool for managing clusters of Docker hosts. Kubernetes is a more robust orchestration system that can manage containers from different providers. #Docker #Interview
A thread with 20+ mid-level to advanced Kubernetes interview questions with concise answers π’π· π·π
1/ π Q: What is Kubernetes and why is it essential for container orchestration?
A: Kubernetes is an open-source container orchestration platform that automates the deployment, scaling, and management of containerized applications, ensuring high availability and reliability.
2/ π οΈ Q: Name the key components of a Kubernetes cluster.
A: A Kubernetes cluster consists of the Master (API Server, Controller Manager, Scheduler, etcd) and Nodes (where containers run). #Kubernetes #Interview
𧡠How to Start Learning Linux for DevOps Aspirants ππ§
From newbie to pro in no time!
Letβs make Linux your ultimate superpower. π¦ΈββοΈπ¦ΈββοΈ
1/ Start with the Basics π οΈβ¨
β’ Discover Linux distros: Ubuntu π£, CentOS π΅, Red Hat π΄.
β’ Set up Linux in a VM (VirtualBox/VMware π»).
β’ Get cozy with the terminal β your new BFF! π₯οΈπ
1/ Whatβs the difference? π€
All these roles focus on improving software delivery and reliability but have different goals. Hereβs a quick breakdown:
2/ Platform Engineer π·
π Goal: Make life easier for developers.
β’ Build tools & platforms (e.g. CI/CD pipelines, Kubernetes)
β’ Standardize workflows for efficiency
β’ Create self-service systems so developers can work faster
π οΈ They focus on improving developer productivity.
A List of critical #AWS services and their limitations π
1. EC2 β Instance limits by region, instance type restrictions. 2. RDS β Max database storage limits, instance size restrictions. 3. S3 β Max object size is 5TB, bucket policies can limit access. 4. EBS β Volume size max of 64TB, 20,000 IOPS for io1/io2 volumes.
5. IAM β Max 5,000 roles per account, policy size limits. 6. Lambda β Max execution timeout of 15 minutes, memory max 10GB. 7. DynamoDB β Partition throughput limits, item size max of 400KB. 8. CloudFormation β 200 resources limit per stack.