This skill provides expert guidance for Azure Red Hat OpenShift. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.
How to Use This Skill
IMPORTANT for Agent: Use the Category Index below to locate relevant sections. For categories with line ranges (e.g.,
L35-L120), useread_filewith the specified lines. For categories with file links (e.g.,[security.md](security.md)), useread_fileon the linked reference file
IMPORTANT for Agent: If
metadata.generated_atis more than 3 months old, suggest the user pull the latest version from the repository. Ifmcp_microsoftdocstools are not available, suggest the user install it: Installation Guide
This skill requires network access to fetch documentation content:
- Preferred: Use
mcp_microsoftdocs:microsoft_docs_fetchwith query stringfrom=learn-agent-skill. Returns Markdown. - Fallback: Use
fetch_webpagewith query stringfrom=learn-agent-skill&accept=text/markdown. Returns Markdown.
Category Index
| Category | Lines | Description |
|---|---|---|
| Troubleshooting | L37-L43 | Fixing common ARO cluster issues, restoring cluster access, and manually updating or troubleshooting cluster certificates and connectivity via CLI |
| Best Practices | L44-L51 | Best practices for sizing and deploying ARO clusters and infra nodes, optimizing OpenShift Virtualization VMs, and staying within supported configurations and policies. |
| Decision Making | L52-L58 | Guidance on choosing ARO architectures and immutable settings, planning networking for hosted control planes, and understanding shared responsibilities between Microsoft, Red Hat, and customers. |
| Architecture & Design Patterns | L59-L63 | Planning network topology for ARO HCP clusters, including VNet design, subnets, private endpoints, connectivity options, and required ports and dependencies. |
| Limits & Quotas | L64-L69 | Scaling ARO clusters with multiple load balancer IPs and understanding built‑in service limits, quotas, and standard service definitions for Azure Red Hat OpenShift. |
| Security | L70-L89 | Identity, access, and data protection for ARO: Entra auth, managed identities/SPs, workload identity, NSGs/egress control, disk/etcd encryption, FIPS, Front Door security, and support access control. |
| Configuration | L90-L117 | Configuring ARO and ARO HCP clusters: networking (DNS, proxy, MTU), registries and pull secrets, storage classes, autoscaling/node pools, identities, logging, alerts, and resource policies. |
| Integrations & Coding Patterns | L118-L127 | Patterns for connecting ARO apps to Azure services: workload identity, ACR, Key Vault, NetApp Files, GPU workloads, and exporting Prometheus metrics to Azure Monitor. |
| Deployment | L128-L139 | Deploying and upgrading ARO clusters and apps: private/standard clusters, ARM/Bicep, WebSphere, S2I and serverless, Velero backup/restore, SDN-to-OVN migration, and HCP control plane/node pool upgrades. |
Troubleshooting
| Topic | URL |
|---|---|
| Regain ARO cluster access using Admin Kubeconfig | https://learn.microsoft.com/en-us/azure/openshift/howto-kubeconfig |
| Manually update ARO cluster certificates via CLI | https://learn.microsoft.com/en-us/azure/openshift/howto-update-certificates |
| Troubleshoot common Azure Red Hat OpenShift cluster issues | https://learn.microsoft.com/en-us/azure/openshift/troubleshoot |
Best Practices
| Topic | URL |
|---|---|
| Optimize VM deployments on OpenShift Virtualization in ARO | https://learn.microsoft.com/en-us/azure/openshift/best-practices-openshift-virtualization |
| Deploy and size infrastructure nodes in ARO | https://learn.microsoft.com/en-us/azure/openshift/howto-infrastructure-nodes |
| Deploy and manage large OpenShift clusters on Azure | https://learn.microsoft.com/en-us/azure/openshift/howto-large-clusters |
| Follow support policies for standard OpenShift clusters | https://learn.microsoft.com/en-us/azure/openshift/support-policies-v4 |
Decision Making
| Topic | URL |
|---|---|
| Choose between standard and hosted OpenShift architectures | https://learn.microsoft.com/en-us/azure/openshift/concepts-classic-hosted-control-planes-comparison |
| Choose immutable settings for ARO HCP clusters | https://learn.microsoft.com/en-us/azure/openshift/howto-choose-cluster-configuration |
| Understand responsibility matrix for ARO operations | https://learn.microsoft.com/en-us/azure/openshift/responsibility-matrix |
Architecture & Design Patterns
| Topic | URL |
|---|---|
| Plan networking for Azure Red Hat OpenShift HCP clusters | https://learn.microsoft.com/en-us/azure/openshift/howto-plan-cluster-network |
Limits & Quotas
| Topic | URL |
|---|---|
| Configure multiple load balancer IPs to scale ARO clusters | https://learn.microsoft.com/en-us/azure/openshift/howto-multiple-ips |
| Understand Azure Red Hat OpenShift standard service definitions | https://learn.microsoft.com/en-us/azure/openshift/openshift-service-definitions |
Security
Configuration
Integrations & Coding Patterns
| Topic | URL |
|---|---|
| Use Azure Workload Identity in ARO HCP applications | https://learn.microsoft.com/en-us/azure/openshift/howto-deploy-configure-application-with-workload-identity |
| Run NVIDIA GPU workloads on Azure Red Hat OpenShift | https://learn.microsoft.com/en-us/azure/openshift/howto-gpu-workloads |
| Configure Azure NetApp Files storage for ARO | https://learn.microsoft.com/en-us/azure/openshift/howto-netapp-files |
| Send ARO Prometheus metrics to Azure Monitor via remote write | https://learn.microsoft.com/en-us/azure/openshift/howto-remotewrite-prometheus |
| Integrate Azure Container Registry with Azure Red Hat OpenShift | https://learn.microsoft.com/en-us/azure/openshift/howto-use-acr-with-aro |
| Integrate Azure Key Vault secrets with Azure Red Hat OpenShift | https://learn.microsoft.com/en-us/azure/openshift/howto-use-key-vault-secrets |