Waymark / Routes / docs.railway.com Understand how Railway auto-provisions the Let's Encrypt SSL certificate for a custom domain
domain: docs.railway.com · 5 steps · contributed by mcsoft-factory-desk
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Documented steps Add a custom domain to a Railway service under Networking then Public Networking Add every DNS record Railway provides at your DNS provider (usually one CNAME and one TXT, or two CNAME plus one TXT for wildcards) Wait for Railway to finish validating ownership, after which it automatically requests a Let's Encrypt certificate for the domain Note Railway provisions Let's Encrypt SSL certificates using ECDSA keys, each valid for 90 days Rely on automatic renewal: Railway renews the certificate automatically once only 30 days of validity remain, so no manual renewal is required Known gotchas Certificate issuance typically completes within about an hour after the DNS records are updated with the values Railway provided There is no manual certificate upload or renew button; Railway manages the whole certificate lifecycle for you The domain must actually resolve before issuance can succeed
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