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Add architecture and deployment flow documentation#28

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senolcolak wants to merge 4 commits intocobaltcore-dev:mainfrom
senolcolak:docs/architecture-diagrams
Open

Add architecture and deployment flow documentation#28
senolcolak wants to merge 4 commits intocobaltcore-dev:mainfrom
senolcolak:docs/architecture-diagrams

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Summary

This PR adds comprehensive documentation for the external-arbiter-operator project.

Changes

  • ✨ Add docs/ARCHITECTURE.md - Detailed architecture diagrams and technical design
  • ✨ Add docs/DEPLOYMENT-FLOW.md - Step-by-step deployment guide with visual timeline
  • ✨ Add docs/README.md - Documentation index and navigation guide

Documentation Contents

ARCHITECTURE.md (668 lines)

  • High-level architecture across source and remote clusters
  • RemoteCluster and RemoteArbiter reconciliation flows
  • Component interaction sequences
  • Ceph configuration data flow
  • Permission model and RBAC requirements
  • State machines and design patterns

DEPLOYMENT-FLOW.md (915 lines)

  • 8 deployment phases from prerequisites to production
  • Operator installation procedures
  • Resource creation flows with complete manifests
  • Pod startup logs and Ceph quorum formation
  • Quick deployment reference commands
  • Troubleshooting decision trees

README.md (52 lines)

  • Documentation index and navigation guide
  • Quick start references
  • Links to related resources

All diagrams use ASCII art for maximum compatibility and can be viewed in any text editor, terminal, or GitHub web interface.

Total Changes

  • 3 files changed
  • 1,635 lines added

- Add ARCHITECTURE.md with detailed component diagrams
  - High-level architecture showing source and remote clusters
  - RemoteCluster and RemoteArbiter reconciliation flows
  - Component interaction sequences
  - Ceph configuration data flow
  - Permission model and RBAC requirements
  - State machines for both controllers
  - Key design patterns

- Add DEPLOYMENT-FLOW.md with step-by-step deployment guide
  - 8 deployment phases from prerequisites to steady state
  - Detailed operator installation steps
  - RemoteCluster and RemoteArbiter creation flows
  - Arbiter resource deployment with complete manifests
  - Pod startup logs and Ceph quorum formation
  - Quick deployment reference commands
  - Troubleshooting decision trees

Both documents use ASCII diagrams for maximum compatibility.
- Add missing commas after .helmignore and *.tpl entries
- Add docs/** path to license annotations for new documentation files
- Fixes REUSE compliance check failure
This fixes REUSE compliance check by covering all files in the contrib directory including:
- contrib/charts/external-arbiter-operator/.helmignore
- contrib/charts/external-arbiter-operator/templates/_helpers.tpl
- contrib/k8s/examples/*.yaml
- contrib/k8s/test/*.yaml

All these files will now be covered by the Apache-2.0 license annotation.
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