Add global cluster disaster recovery documentation

[chinameok]

Introduces a new guide (global_dr.mdx) detailing disaster recovery for the global cluster, including setup, synchronization, and failover procedures. Also updates prerequisites to reference the new disaster recovery documentation for users planning to implement this feature.

Summary by CodeRabbit

• Documentation
  • Added a comprehensive guide for global Cluster Disaster Recovery, including setup, failover procedures, and maintenance best practices.
  • Updated installation prerequisites to highlight the importance of reviewing disaster recovery documentation for users planning to implement global Cluster Disaster Recovery.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

A new documentation file was added detailing the setup and operation of global Cluster Disaster Recovery, including architecture, supported scenarios, installation, failover, and maintenance procedures. Additionally, the prerequisites documentation was updated to reference the new disaster recovery documentation and clarify installation requirements.

Changes

Cohort / File(s)	Change Summary
Global Cluster Disaster Recovery Documentation docs/en/install/global_dr.mdx	Added comprehensive documentation for global Cluster Disaster Recovery, covering architecture, setup, failover, and maintenance.
Prerequisites Documentation Update docs/en/install/prepare/prerequisites.mdx	Updated to a numbered list; added a reference and recommendation to consult the new global Cluster Disaster Recovery documentation.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~6 minutes

Suggested reviewers

• fanzy618

Poem

In docs we trust, for clusters to last,
Disaster recovery—now written, steadfast.
From primary to standby, the sync flows anew,
With steps and commands, clear guidance for you.
So hop along, dear admin, and follow the guide—
Your global cluster’s safe, with CodeRabbit by your side! 🐇✨

Note

⚡️ Unit Test Generation is now available in beta!

Learn more here, or try it out under "Finishing Touches" below.

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 8f70504 and f4f7ab9.

📒 Files selected for processing (2)

• docs/en/install/global_dr.mdx (1 hunks)
• docs/en/install/prepare/prerequisites.mdx (1 hunks)

✨ Finishing Touches

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch global-dr/AIT-59492

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