SOP: Add a New myfoodfast.co.uk Subdomain (Cloudflare → Firebase → Edge)

Goal

Bring SUBDOMAIN.myfoodfast.co.uk live via Cloudflare edge with Firebase Hosting, no downtime.

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1) Verify & Provision on Firebase (grey-cloud first)

1. In Firebase Hosting → Sites → Domains, click Add custom domain → enter SUBDOMAIN.myfoodfast.co.uk.
2. In Cloudflare → DNS, create one record (temporary for verification):

• Type: CNAME
• Name: SUBDOMAIN
• Target: mff-live.web.app
• Proxy status: DNS only (grey cloud)

3. Back in Firebase, click Verify and wait until the domain shows Connected / SSL: Provisioned.

Pitfalls to check

• Remove any existing A/AAAA records for this host.
• Keep exactly one CNAME during verification and make sure it’s DNS only.

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2) Flip to the Cloudflare Edge

Edit the same DNS record in Cloudflare:

• Target: edge.myfoodfast.co.uk
• Proxy status: Proxied (orange cloud)

(No changes needed in Firebase at this step.)

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3) Set Edge Behaviour (once per zone; confirm exists)

• Origin Rule (Cloudflare → Rules → Origin Rules): If Hostname matches *.myfoodfast.co.uk → Origin hostname: mff-live.web.app (HTTP Host Header: mff-live.web.app or “pass through” if already working)

• Cache Rules:

• If Accept contains text/html → Bypass cache

• If path matches *.js,*.css,*.png,*.jpg,*.svg,*.woff2 → Cache: Cache Everything (long TTL; rely on filename versioning)

• Security:

• SSL/TLS mode Full (strict)

• Do not enable “Under Attack Mode” or global JS challenges on public paths

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4) Validate & Hand-off

Verify

• Browser: open https://SUBDOMAIN.myfoodfast.co.uk (check lock icon is valid)
• Header check:

  curl -I https://SUBDOMAIN.myfoodfast.co.uk

Confirm you see cf-ray/cf-cache-status headers and a 200/301/302 as expected.

If someone still sees “Site Not Found”

• Ask them to clear Chrome host cache: chrome://net-internals/#dns → Clear; then #sockets → Flush.

Record the change

• Note: date/time, subdomain, who verified, and screenshot of Firebase SSL: Provisioned.

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Rollback (if needed)

• In Cloudflare DNS, change Target back to mff-live.web.app and set DNS only.
• Clear Cloudflare cache for the host (optional).

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Quick Template (replace SUBDOMAIN)

• DNS record (verify phase)

  Name: SUBDOMAIN
  Type: CNAME
  Target: mff-live.web.app
  Proxy: DNS only

• DNS record (live edge)

  Name: SUBDOMAIN
  Type: CNAME
  Target: edge.myfoodfast.co.uk
  Proxy: Proxied