Deploy cert-manager on Google Kubernetes Engine Tutorial - remove google domains

[sethmccombs]

Fixes #2061

Removing google domains in favor of

• another registrar
• removing the domain section entirely and keeping it general

Will make changes once discussion on above issue pans out one way or another

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[sethmccombs]

Will squash and sign off once I've got this completed

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[wallrj-cyberark]

Thank you for flagging this — the Google Domains references in the GKE tutorial are indeed broken since the service was sold to Squarespace in 2023.

The current state of this PR only removes the Google Domains mention from the prerequisites line (line 41), but Section 4 ("Create a domain name for your website") still contains the bulk of the Google Domains content: step-by-step instructions pointing at domains.google.com, three Google Domains screenshots, and references to the Google Domains cart and DNS management UI.

The "Last Verified" date was also bumped to 14 April 2026, but the tutorial was not actually re-verified — the Google Domains content that immediately follows is broken.

As you noted in the PR description, this needs a decision on whether to:

1. Replace Google Domains with a different registrar, or
2. Make the domain section generic (remove registrar-specific steps and screenshots, keep the general A-record instruction)

I would suggest option 2 — making it generic. Registrar-specific screenshots and step-by-step instructions become stale when the registrar changes its UI, and the important concept for readers is "create an A record pointing to your ingress IP", not "click this button in this registrar's dashboard." The three Google Domains screenshots in static/images/getting-started/ should be removed as part of this change.

The "Last Verified" date should only be bumped when the tutorial is actually walked through end-to-end.

Are you still planning to complete this work? If so, I am happy to review a follow-up. If not, please let us know and we can either pick it up or close the PR.