DevOps
How to Use Prometheus and node exporter for Server Metrics
Install node exporter as a systemd service, scrape it with Prometheus, write PromQL for CPU, memory and disk, and keep the port private.
6 min read
Tag
deployment
11 posts
Tooling
How to Use GitHub Releases for Script Distribution
Distribute a script with GitHub Releases: tags, notes, attached files and checksums, the gh CLI, an installer that verifies and update checks.
6 min read
CI/CD
How to Create Releases and Changelogs in CI With Examples
Automate releases and changelogs in CI from a git tag: trigger on tags, generate notes with gh or git-cliff, attach artifacts and keep it reproducible.
6 min read
DevOps
How to Do Capacity Checks With Shell Commands the Right Way
Run capacity checks from the shell: disk and inode use, memory available, load against core count, a growth estimate and a simple CSV log for trends.
6 min read
DevOps
How to Write a Runbook for Common Server Problems Easily
Write a runbook for common server problems: a fixed template with symptom, check, fix and verify, copy-paste commands, an owner and a way to test it.
6 min read
Git
How to Use git tags for Releases and Versions With Examples
Use git tag for releases: lightweight versus annotated tags, signing, pushing to a remote, listing and deleting, and naming versions with semantic versioning.
6 min read
CI/CD
How to Deploy From CI Over SSH and Avoid the Pitfalls
Deploy from CI over SSH with a dedicated key limited by authorized_keys options, a pinned host key, a single deploy command and no StrictHostKeyChecking off.
6 min read
DevOps
How to Use Helm From the Command Line With Real Output
Use Helm from the command line: add repos, install and upgrade releases, values files, template and diff before applying, history, rollback and uninstall.
6 min read
DevOps
How to Use Makefile Targets for Deploy Tasks With Examples
Use Makefile deploy targets to wrap build, test, release and rollback commands, with phony targets, variables, a production guard and a self-documenting help.
6 min read
DevOps
What Is GitOps and Do Small Teams Need It Step by Step
What is GitOps: infrastructure described in Git and applied by an agent. See the pull model, the tools, how a small team can start, and when it is overkill.
6 min read
DevOps
How to Use Feature Flags With Simple Shell and Config Tools
Use simple feature flags with environment variables, a config file and a small script, roll out gradually, remove old flags, and know when to use a service.
6 min read