NGINX 502 Bad Gateway: Causes and Fixes
Why NGINX returns 502 Bad Gateway — upstream timeouts, wrong upstream addresses, FastCGI/PHP-FPM failures, plus SELinux gotchas, with fixes.
All articles
Displaying posts 13 - 24 of 352 in total
Dockerize a Node.js App: A Production‑Ready Walkthrough
Dockerize a Node.js app with a production-ready multi-stage Dockerfile — non-root user, proper signal handling, layer caching, and deploy integration.
Essential Linux Server Commands for Deployment
Disk space, memory, processes, logs — the Linux server commands you reach for before, during, and after every deployment, plus a health-check script.
How to Check Your Ubuntu (or Any Linux) Version from the Command Line
Check your Ubuntu or Linux version from the command line with lsb_release, /etc/os-release, or hostnamectl. Reference + when to use each.
Choosing a Linux Distro for Production Deployments: Ubuntu, Debian, AlmaLinux, RHEL
Ubuntu, Debian, AlmaLinux, or RHEL? Pick the right Linux distribution for production servers based on support windows, packages, and deployability.
Self-Host n8n on a VPS: Docker, HTTPS, and Git‑Based Updates
Self-host n8n on a VPS with Docker, Postgres, and HTTPS — then version your workflows in Git and push updates with one-click rollback.
Tie every Honeybadger error to the DeployHQ deploy that caused it
Every error in Honeybadger should tell you which DeployHQ release caused it. Wire deploy markers, regression detection, and one-click rollback.
Heroku alternatives in 2026: DeployHQ + your VPS vs Render vs Railway vs Fly.io
Heroku is in sustaining mode. Compare Render, Railway, Fly.io, and DeployHQ + your own VPS — pricing, lock-in, and when each one wins.
Spec-Kit and Copilot Workspaces: Where Deployment Fits in Spec‑Driven AI Development
Spec-Kit and Copilot Workspaces stop at the PR. Here is what spec-driven AI development looks like end to end — and where DeployHQ closes the loop.
DeployHQ CLI: Deploy From Your Terminal (or Let Your AI Agent Do It)
Install the DeployHQ CLI (dhq) once and ship from your terminal — or wire it into Claude Code, Cursor, and Codex so your AI agent can deploy for you.
New DeployHQ integrations: Linear, Google Chat, Telegram, and signed webhooks
Five new DeployHQ integrations push deploy status to GitHub, GitLab, Bitbucket, Linear releases, Google Chat, Telegram, and signed HTTP webhooks.
Deploy Hermes Agent on a VPS: DeployHQ Workflow + How It Differs from OpenClaw
Walk through deploying Hermes Agent on a VPS with DeployHQ, plus how its self-improving skills differ from OpenClaw's lighter gateway model.