Tag: devops

Understanding and Optimizing Docker’s daemon.json File

daemon.json controls how the Docker daemon behaves — logging drivers, storage drivers, registry mirrors, and the options worth tuning.

Optimize Ubuntu Logs: btmp Log Rotation

btmp logs failed logins and grows forever on internet-facing servers. Set up logrotate to keep it under control before your disk fills up.

Ansible: Task and Role Inclusions for Efficient Automation

Stop copy-pasting Ansible tasks across playbooks — use include_tasks, import_tasks, and roles to keep your automation DRY and maintainable.

Docker Networking Essential Guide for All Skill Levels

Bridge, host, overlay, macvlan, and none — every Docker network mode explained with real use cases from beginner to production.

Understanding CMD and ENTRYPOINT in Dockerfiles

CMD and ENTRYPOINT both define what runs in a container but work differently — exec vs shell form, and how they interact when combined.

Copying Files Between Docker Containers and Host Machines

Use docker cp to move files between running containers and your host machine — no volumes needed for one-off file transfers.

Multiple Actions with a Single docker exec Call

Run multiple commands in one docker exec call by piping a heredoc to the container shell — chain dependent steps and skip repeated container roundtrips.

Tmux for Streamlining Dev Workflow

Master tmux for dev work: sessions, windows, panes, layout scripting, hooks, and pane syncing — the commands that turn one terminal into many.

Ansible vs. Terraform: Cloud Infrastructure Management

Ansible configures servers; Terraform provisions infrastructure — learn when to use each, how they overlap, and why you probably need both.

WordPress, Docker, NGINX, and MySQL via Ansible

Automate a full WordPress stack deployment — Docker, nginx, and MySQL — using Ansible playbooks instead of clicking through wizards.

DevOps Tools: Ansible vs. Puppet vs. Salt vs. Chef

Ansible, Puppet, Salt, and Chef all do configuration management — but they're very different. Pick the right one before you commit.

Uptime Monitoring with Uptime Kuma

Uptime Kuma monitors your services and sends alerts when they go down — beautiful self-hosted alternative to UptimeRobot.