Nginx 502 Bad Gateway with Node.js: An Inside-Out Checklist
Find the cause of an Nginx 502 after deploying Next.js, NestJS, or Node.js with curl, ss, systemd, PM2, Docker Compose, and logs.
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Find the cause of an Nginx 502 after deploying Next.js, NestJS, or Node.js with curl, ss, systemd, PM2, Docker Compose, and logs.
Read guide →Configure an Nginx server block for Node.js, Next.js, or NestJS with forwarded headers, WebSockets, HTTPS, timeouts, and safe reloads.
Read guide →Install a free Let's Encrypt certificate with Certbot and Nginx on Ubuntu, verify DNS and firewall access, renew automatically, and fix ACME challenge errors.
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