DevOps curriculum

CLI script — CPU, memory, disk, load average, and top processes.

Rotate and tarball logs with date stamps — cron-ready.

Parse access.log — top IPs, 5xx count, slow requests from CLI.

Static site workflow — build and publish with GitHub Actions.

Harden SSH — keys, disable password auth, firewall.

Install Nginx and serve a static site with TLS.

A, CNAME, MX — BIND or cloud DNS with dig verification.

Real-time CPU, RAM, disk with Netdata.

Unit file that logs to journal — enable on boot.

Multi-stage or slim image — build and run locally.

Launch instance, security group, SSH in, verify identity.

Playbook to harden a Linux server — packages, users, services.

VPC, compute, remote state — plan and apply safely.

GitHub Actions — test, build image, deploy to server or K8s.

App + database + cache — local prod-like stack.

Scheduled pg_dump / mysqldump to S3 with retention.

Jump box for private subnets — SSH hardening and audit.

SHA256 manifest — detect tampering on config and log dirs.

WireGuard tunnel for secure remote access to private infra.

Internal DHCP with reserved leases and DNS integration.

Export shares and mount from clients — lab or legacy apps.

Two identical envs — switch traffic with zero downtime.

Metrics collection, dashboards, and alert rules.

Register services, health checks, and DNS interface.

Sync cluster state from Git — deploy and rollback from repo.

External Secrets Operator — no plain secrets in git.

Hypervisor, VMs, storage, and live migration basics.