Add Hybrid Mesh Platform sandbox pattern

[maximilianoPizarro]

Summary

• Adds Hybrid Mesh Platform as a new sandbox-tier pattern under content/patterns/hybrid-mesh-platform/.
• Documents hub-spoke multi-cluster GitOps (ACM, Argo CD ApplicationSet, Service Mesh ambient, Skupper, Hub Gateway, observability) on OpenShift 4.20.
• Extends the existing Industrial Edge pattern for east/west spoke deployment (does not duplicate maintained-pattern content).
• Includes architecture diagrams in static/images/hybrid-mesh-platform/ and spellcheck entries in .wordlist.txt.

Contributor: Maximiliano Pizarro (Specialist Solution Architect at Red Hat)
Pattern repo: https://github.com/maximilianopizarro/platform-hub-spoke-config

Pages added

Page	Weight
_index.md	Landing
getting-started.md	10
architecture.md	20
hub-gateway.md	30
observability.md	40
industrial-edge.md	50
scaffolding.md	60
ideas-for-customization.md	70

Test plan

• CI / Super-Linter passes
• Spellcheck passes (.wordlist.txt updated)
• Site build succeeds (make build in container)
• Pattern renders at /patterns/hybrid-mesh-platform/
• Images load from /images/hybrid-mesh-platform/
• Links to maintained Industrial Edge and Multicloud GitOps patterns resolve

Made with Cursor

[openshift-ci]

Hi @maximilianoPizarro. Thanks for your PR.

I'm waiting for a validatedpatterns member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work.

Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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[maximilianoPizarro]

Hi @mbaldessari and team,

I have opened this Pull Request to propose adding the Hybrid Mesh Platform architecture blueprint to the Validated Patterns documentation.

This architecture provides a GitOps-first, hub-spoke reference design to scale fleet governance across multiple OpenShift clusters. The stack is validated using an Industrial Edge factory IoT scenario as the proof workload.

Key highlights of the platform architecture include:

• Centralized Fleet GitOps: Leverages Advanced Cluster Management (ACM) for fleet inventory and OpenShift GitOps (Argo CD) with ApplicationSets for automated multi-cluster delivery.
• Service Mesh Without Sidecars: Uses Red Hat OpenShift Service Mesh 3 (OSSM3) in ambient mode, utilizing per-node ztunnels for L4 connectivity and optional waypoints for L7 policies.
• Cross-Cluster Connectivity Without VPN: Implements Red Hat Service Interconnect (Skupper) to create a Virtual Application Network via outbound-only mTLS, avoiding complex inbound firewall rules.
• Data Pipeline Validation: Integrates AMQ Streams (Kafka), Apache Camel K, and MQTT ingestion to demonstrate a fully functional, stateful edge pipeline.

The underlying repository and full implementation details can be found at: github.com/maximilianoPizarro/platform-hub-spoke-config.

I would highly appreciate your review, feedback, or any guidance on required adjustments to ensure this aligns perfectly with the Validated Patterns standards.

Thank you for your time and support!