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DOC-1046: Add Cloudflare to Gcore DNS migration guide#2102

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DOC-1046
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DOC-1046: Add Cloudflare to Gcore DNS migration guide#2102
JojoVilloso wants to merge 2 commits into
mainfrom
DOC-1046

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Summary

Adds a new how-to guide covering the full DNS migration process from Cloudflare to Gcore Managed DNS.

Covers:

  • Pre-migration TTL lowering
  • Exporting DNS records from Cloudflare (BIND zone file)
  • Creating a DNS zone and importing records in Gcore
  • Updating nameservers at the domain registrar (with glue records explanation)
  • Propagation verification

Key callout: Includes a prominent warning that NS changes must be made at the registrar level — not inside Cloudflare — based on real support case from the original ticket thread.

Pending: Legal review required for third-party (Cloudflare) mentions per DOC-1233 policy.

Closes DOC-1046

Made with Cursor

Adds a new how-to doc covering the full migration process from Cloudflare
DNS to Gcore Managed DNS, including TTL prep, zone file export/import,
registrar-level nameserver update, and propagation verification.

Refs: DOC-1046
Co-authored-by: Cursor <cursoragent@cursor.com>
Add DNSSEC warning with correct disable-before-switch order
Rewrite proxied records warning to cover A, AAAA, and CNAME records
Add apex/root records note for CNAME flattening export behavior
Add what-is-not-migrated warning for CDN, WAF, Workers, SSL
Rewrite Step 4 warning to remove glue records terminology
Add rollback note to keep Cloudflare zone intact 48h after migration
Add reference to zone creation guide with screenshots in Step 2
Fix file extension: rename .txt to .zone before uploading
Remove all em dashes throughout article
Add ai-navigation frontmatter

Co-authored-by: Cursor <cursoragent@cursor.com>
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