Core DevOps technologies — detailed review#

Deep-dive pages covering concepts, internals, and 20 interview questions per topic.

• Kubernetes — container orchestration, Pods, RBAC, networking, autoscaling
• Docker and container runtimes — images, layers, containerd, Dockerfile
• Terraform — IaC, state, modules, providers
• Ansible — playbooks, roles, Vault, idempotency
• AWS & cloud concepts — EC2, EKS, IAM, VPC, Lambda
• Linux — processes, systemd, filesystem, networking
• Networking — TCP/IP, DNS, TLS, load balancing
• PostgreSQL & database concepts — MVCC, indexes, replication, tuning
• Kafka, NATS, and messaging — partitions, consumer groups, delivery semantics
• GitHub Actions — workflows, runners, secrets, CI/CD
• GitLab CI/CD — pipelines, stages, runners, environments