add cluster network design to concepts

[jklare]

No description provided.

[github-actions]

✅⚠️MegaLinter analysis: Success with warnings

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ ACTION	actionlint	5		0	0	0.03s
✅ JSON	jsonlint	4		0	0	0.07s
✅ JSON	prettier	4		0	0	0.29s
✅ JSON	v8r	4		0	0	6.24s
✅ MARKDOWN	markdownlint	155		0	0	1.46s
✅ MARKDOWN	markdown-table-formatter	155		0	0	0.27s
✅ REPOSITORY	betterleaks	yes		no	no	1.14s
✅ REPOSITORY	checkov	yes		no	no	21.88s
✅ REPOSITORY	git_diff	yes		no	no	0.05s
✅ REPOSITORY	secretlint	yes		no	no	1.24s
✅ REPOSITORY	trufflehog	yes		no	no	3.55s
✅ SPELL	codespell	165		0	0	0.4s
⚠️ SPELL	lychee	165		3	0	14.56s
✅ YAML	prettier	6		0	0	0.27s
✅ YAML	v8r	6		0	0	4.94s
✅ YAML	yamllint	6		0	0	1.05s

Detailed Issues

⚠️ SPELL / lychee - 3 errors

📝 Summary
---------------------
🔍 Total..........852
🔗 Unique.........701
✅ Successful.....803
⏳ Timeouts.........0
🔀 Redirected......49
👻 Excluded........46
❓ Unknown..........0
🚫 Errors...........3
⛔ Unsupported......3

Errors in docs/guides/configuration-guide/openstack/index.md
[404] https://github.com/openstack/kolla/blob/master/docker/base/set_configs.py (at 370:30) | Rejected status code: 404 Not Found
[404] https://github.com/openstack/kolla/blob/master/docker/base/start.sh (at 369:37) | Rejected status code: 404 Not Found

Errors in docs/release-notes/index.md
[ERROR] https://release.osism.tech/ (at 11:1) | Connection failed. Check network connectivity and firewall settings

Hint: Followed 49 redirects. You might want to consider replacing redirecting URLs with the resolved URLs. Use verbose mode (`-v`/`-vv`) to see redirection details.

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[jklare]

I marked multiple reviewers here to get views from different perspectives and see if this is useful for everybody or if there are relevant basics missing allowing the reader to understand the concept.

[ideaship]

FWIW, the diagram doesn't render properly on Firefox on Linux (Firefox 152.0.4 on Fedora and 140.12.0esr on Debian), but it looks perfect on Linux/Chrome and macOS/Firefox. Not suggesting that should be fixed, but may be worth knowing.

[jklare]

FWIW, the diagram doesn't render properly on Firefox on Linux (Firefox 152.0.4 on Fedora and 140.12.0esr on Debian), but it looks perfect on Linux/Chrome and macOS/Firefox. Not suggesting that should be fixed, but may be worth knowing.

How can I fix that?