DevOps Daily Tips

Bite-sized, actionable DevOps tips you can apply immediately. One new tip every day.

All Tips

🐳Day 23Intermediate

Add Health Checks to Your Dockerfiles

A running container isn't necessarily a healthy container β€” health checks let Docker tell the difference.

Feb 23, 20261 min read
dockermonitoringreliability
πŸ—οΈDay 22Beginner

Always Run Terraform Plan Before Apply

A quick terraform plan can save you from accidentally destroying production resources.

Feb 22, 20261 min read
terraformsafetyworkflow
πŸ”„Day 21Intermediate

DRY Your Pipelines with Reusable Workflows

Reusable workflows eliminate copy-paste duplication across repos and keep your CI/CD consistent.

Feb 21, 20261 min read
cicdgithub-actionsbest-practices
πŸ’»Day 20Beginner

Set Up SSH Keys the Right Way

SSH keys replace passwords with cryptographic authentication β€” more secure and no typing passwords every time.

Feb 20, 20261 min read
linuxsshsecurity
☸️Day 19Beginner

Master Kubernetes Labels and Selectors

Labels and selectors are how Kubernetes connects everything β€” get them wrong and nothing talks to anything.

Feb 19, 20261 min read
kuberneteslabelsfundamentals
πŸ”€Day 18Advanced

Work on Multiple Branches Simultaneously with Git Worktrees

Git worktrees let you work on multiple branches at once without stashing or cloning.

Feb 18, 20261 min read
gitproductivityadvanced
🐳Day 17Intermediate

Never Run Containers as Root

Running as root inside a container means a breakout may give an attacker elevated privileges on your host.

Feb 17, 20261 min read
dockersecuritybest-practices
πŸ—οΈDay 16Beginner

Why You Should Commit Your Terraform Lock File

Committing .terraform.lock.hcl ensures your entire team uses the exact same provider versions every time.

Feb 16, 20261 min read
terraformbest-practicesversion-control
πŸ”„Day 15Intermediate

Test Across Multiple Versions with Matrix Builds

Matrix builds catch compatibility issues early by testing every version and OS combo in parallel.

Feb 15, 20261 min read
cicdgithub-actionstesting
πŸ’»Day 14Beginner

Automate Anything with Cron Jobs

Cron lets you automate repetitive tasks so you never have to remember to run them manually again.

Feb 14, 20261 min read
linuxautomationscheduling
☸️Day 13Beginner

Switch Between Clusters with kubectl Contexts

One wrong context means running production commands on the wrong cluster.

Feb 13, 20261 min read
kuberneteskubectlconfiguration
πŸ”€Day 12Intermediate

Recover Lost Commits with Git Reflog

Git reflog is your undo button β€” it can recover commits you thought were gone forever.

Feb 12, 20261 min read
gitrecoverydebugging