azure-kubernetes
Plan, create, and configure production-ready Azure Kubernetes Service (AKS) clusters. Covers Day-0 checklist, SKU selection (Automatic vs Standard), networking options (private API server, Azure CNI Overlay, egress configuration), security, and operations (autoscaling, upgrade strategy, cost analysis). WHEN: create AKS environment, provision AKS, enable AKS observability, design AKS networking, choose AKS SKU, secure AKS, optimize AKS, AKS spot nodes, AKS cluster-autoscaler, rightsize AKS pod, pod rightsizing, over-provisioned AKS pod, pod resource requests and limits, Vertical Pod Autoscaler, VPA recommendations.
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Install
Works with every agent the skills CLI supports.
npx skills add https://github.com/microsoft/azure-skills --skill azure-kubernetes- 01
Install
Run the command in your project. The CLI asks which agents to install for.
- 02
Describe the task
Ask your agent for something this skill covers. It loads azure-kubernetes automatically when relevant.
- 03
Review the result
The agent follows the SKILL.md steps, scripts and references bundled with the skill.
Security audits
Independent scans of the skill's instructions and bundled files.
SKILL.md
The instructions your agent reads when the skill is triggered.
Azure Kubernetes Service
AUTHORITATIVE GUIDANCE — MANDATORY COMPLIANCE
This skill produces a recommended AKS cluster configuration based on user requirements, distinguishing Day-0 decisions (networking, API server — hard to change later) from Day-1 features (can enable post-creation). See CLI reference for commands.
Quick Reference
| Property | Value |
|---|---|
| Best for | AKS cluster planning and Day-0 decisions |
| MCP Tools | mcp_azure_mcp_aks |
| CLI | az aks create, az aks show, kubectl get, kubectl describe |
| Related skills | azure-kubernetes-app-deploy (deploy an app to an existing cluster), azure-diagnostics (baseline AKS troubleshooting), azure-validate (readiness checks), azure-kubernetes-automatic-readiness (migrate existing cluster to AKS Automatic), optional aks-skills operations add-on (focused incident, exact-signature, packet-capture, and GPU Day-2 workflows) |
When to Use This Skill
Activate this skill when user wants to:
- Create a new AKS cluster
- Plan AKS cluster configuration for production workloads
- Design AKS networking (API server access, pod IP model, egress)
- Set up AKS identity and secrets management
- Configure AKS governance (Azure Policy, Deployment Safeguards)
- Enable AKS observability (Container Insights, Managed Prometheus, Grafana)
- Define AKS upgrade and patching strategy
- Understand AKS Automatic vs Standard SKU differences
- Get a Day-0 checklist for AKS cluster setup and configuration
Deploying an application to an existing cluster? This skill provisions and configures the cluster. To containerize an app and deploy it to a cluster that already exists (Dockerfile + manifests + Deployment Safeguards), use the
azure-kubernetes-app-deploysub-skill instead.
Deeper operational task? Keep Day-0 planning and basic operations in this base skill. Load optional-aks-operations.md only when a focused optional AKS operational skill could improve the current task.
Rules
- Start with the user's requirements for provisioning compute, networking, security, and other settings.
- Use the
azureMCP server and selectmcp_azure_mcp_aksfirst to discover the exact AKS-specific MCP tools surfaced by the client. Choose the smallest discovered AKS tool that fits the task, and fall back to Azure CLI (az aks) only when the needed functionality is not exposed through the AKS MCP surface. - Determine if AKS Automatic or Standard SKU is more appropriate based on the user's need for control vs convenience. Default to AKS Automatic unless specific customizations are required.
- Document decisions and rationale for cluster configuration choices, especially for Day-0 decisions that are hard to change later (networking, API server access).
Required Inputs (Ask only what’s needed)
If the user is unsure, use safe defaults.
- AKS environment type: dev/test or production
- Region(s), availability zones, preferred node VM sizes
- Expected scale (node/cluster count, workload size)
- Networking requirements (API server access, pod IP model, ingress/egress control)
- Security and identity requirements, including image registry
- Upgrade and observability preferences
- Cost constraints
Workflow
1. Cluster Type
- AKS Automatic (default): Best for most production workloads, provides a curated experience with pre-configured best practices for security, reliability, and performance. Use unless you have specific custom requirements for networking, autoscaling, or node pool configurations not supported by Node Auto-Provisioning (NAP).
- AKS Standard: Use if you need full control over environment configuration, which requires additional overhead to set up and manage.
2. Networking (Pod IP, Egress, Ingress, Dataplane)
Pod IP Model (Key Day-0 decision):
- Azure CNI Overlay (recommended): pod IPs from private overlay range, not VNet-routable, scales to large environments and good for most workloads
- Azure CNI (VNet-routable): pod IPs directly from VNet (pod subnet or node subnet), use when pods must be directly addressable from VNet or on-prem
Dataplane & Network Policy:
- Azure CNI powered by Cilium (recommended): eBPF-based for high-performance packet processing, network policies, and observability
Egress:
- Static Egress Gateway for stable, predictable outbound IPs
- For restricted egress: UDR + Azure Firewall or NVA
Ingress:
- App Routing addon with Gateway API — recommended default for HTTP/HTTPS workloads
- Istio service mesh with Gateway API - for advanced traffic management, mTLS, canary releases
- Application Gateway for Containers — for L7 load balancing with WAF integration
DNS:
- Enable LocalDNS on all node pools for reliable, performant DNS resolution
3. Security
- Use Microsoft Entra ID everywhere (control plane, Workload Identity for pods, node access). Avoid static credentials.
- Azure Key Vault via Secrets Store CSI Driver for secrets
- Enable Azure Policy + Deployment Safeguards
- Enable Encryption at rest for etcd/API server; in-transit for node-to-node
- Allow only signed, policy-approved images (Azure Policy + Ratify), prefer Azure Container Registry
- Isolation: Use namespaces, network policies, scoped logging
4. Observability
- Use Managed Prometheus and Container Insights with Grafana for AKS observability (logs + metrics).
- Enable Diagnostic Settings to collect control plane logs and audit logs in a Log Analytics workspace for security monitoring and troubleshooting.
- For other monitoring and troubleshooting tools, use features like the Agentic CLI for AKS, Application Insights, Resource Health Center, AppLens detectors, and Azure Advisors.
5. Upgrades & Patching
- Configure Maintenance Windows for controlled upgrade timing
- Enable auto-upgrades for control plane and node OS to stay up-to-date with security patches and Kubernetes versions
- Consider LTS versions for enterprise stability (2-year support) by upgrading your AKS environment to the Premium tier
- Fleet upgrades: Use AKS Fleet Manager for staged rollout across test to production environments
6. Performance
- Use Ephemeral OS disks (
--node-osdisk-type Ephemeral) for faster node startup - Select Azure Linux as node OS (smaller footprint, faster boot)
- Enable KEDA for event-driven autoscaling beyond HPA
7. Node Pools & Compute
- Dedicated system node pool: At least 2 nodes, tainted for system workloads only (
CriticalAddonsOnly) - Enable Node Auto Provisioning (NAP) on all pools for cost savings and responsive scaling
- Use latest generation SKUs (v5/v6) for host-level optimizations
- Avoid B-series VMs — burstable SKUs cause performance/reliability issues
- Use SKUs with at least 4 vCPUs for production workloads
- Set topology spread constraints to distribute pods across hosts/zones per SLO
8. Reliability
- Deploy across 3 Availability Zones (
--zones 1 2 3) - Use Standard tier for zone-redundant control plane + 99.95% SLA for API server availability
- Enable Microsoft Defender for Containers for runtime protection
- Configure PodDisruptionBudgets for all production workloads
- Use topology spread constraints to ensure pod distribution across failure domains
9. Cost Controls
- Use Spot node pools for batch/interruptible workloads (up to 90% savings)
- Stop/Start dev/test clusters:
az aks stop/start - Consider Reserved Instances or Savings Plans for steady-state workloads
Deep-dive scenarios — load only the relevant reference file:
| Scenario | Trigger Keywords | Reference |
|---|---|---|
| Pod Rightsizing | over-provisioned pods, CPU requests, memory requests, rightsize workloads | azure-aks-rightsizing.md |
| VPA Setup | vertical pod autoscaler, VPA recommendations, VPA enable | azure-aks-vpa.md |
| Cluster Autoscaler | idle nodes, CAS off, enable autoscaler, scale-down profile, node utilization | azure-aks-autoscaler.md |
| Spot Node Pools | Spot VMs, Spot nodes, batch workloads, cheaper nodes | azure-aks-spot.md |
Disambiguation: If a prompt matches multiple rows (e.g., "cheaper nodes" could suggest both Spot and autoscaler), prefer the most specific match. If ambiguous, ask the user to clarify their intent before loading a reference file.
Guardrails / Safety
- Do not request or output secrets (tokens, keys).
- Do not ask the user to paste subscription IDs. Discover subscription and resource scope via MCP tools (e.g., list subscriptions, list resource groups) or
az account show/az account listso the agent can resolve context without exposing identifiers. - If requirements are ambiguous for day-0 critical decisions, ask the user clarifying questions. For day-1 enabled features, propose 2–3 safe options with tradeoffs and choose a conservative default.
- Do not promise zero downtime; advise workload safeguards (PDBs, probes, replicas) and staged upgrades along with best practices for reliability and performance.
MCP Tools
| Tool | Purpose | Key Parameters |
|---|---|---|
mcp_azure_mcp_aks | AKS MCP entry point used to discover the exact AKS-specific tools exposed by the client | Discover the callable AKS tool first, then use that tool's parameters |
Error Handling
| Error / Symptom | Likely Cause | Remediation |
|---|---|---|
| MCP tool call fails or times out | Invalid credentials, subscription, or AKS context | Verify az login, confirm the active subscription context with az account show, and check the target resource group without echoing subscription identifiers back to the user |
| Quota exceeded | Regional vCPU or resource limits | Request quota increase or select different region/VM SKU |
| Networking conflict (IP exhaustion) | Pod subnet too small for overlay/CNI | Re-plan IP ranges; may require cluster recreation (Day-0) |
| Workload Identity not working | Missing OIDC issuer or federated credential | Enable --enable-oidc-issuer --enable-workload-identity, configure federated identity |
FAQ
What does the azure-kubernetes skill do?
Plan, create, and configure production-ready Azure Kubernetes Service (AKS) clusters. Covers Day-0 checklist, SKU selection (Automatic vs Standard), networking options (private API server, Azure CNI Overlay, egress configuration), security, and operations (autoscaling, upgrade strategy, cost analysis). WHEN: create AKS environment, provision AKS, enable AKS observability, design AKS networking, choose AKS SKU, secure AKS, optimize AKS, AKS spot nodes, AKS cluster-autoscaler, rightsize AKS pod, pod rightsizing, over-provisioned AKS pod, pod resource requests and limits, Vertical Pod Autoscaler, VPA recommendations.
How do I install azure-kubernetes?
Run npx skills add https://github.com/microsoft/azure-skills --skill azure-kubernetes in your project. The skills CLI detects the agents you use and copies the skill into the right folder. For Claude Code you can also place the skill folder at ~/.claude/skills/azure-kubernetes/ (personal) or .claude/skills/azure-kubernetes/ (project).
Which AI agents can use azure-kubernetes?
Any agent that supports the open Agent Skills format (a folder with a SKILL.md file), including Claude Code, Codex, Cursor, GitHub Copilot, Gemini CLI, Windsurf, Cline, OpenCode and more.
Is azure-kubernetes safe to install?
Security partners have reviewed it: Gen Agent Trust Hub passed; Socket passed; Snyk passed; ZeroLeaks passed. As with any skill, read the SKILL.md and bundled scripts before installing.
Who maintains azure-kubernetes?
It is published by microsoft in microsoft/azure-skills, and it is an official skill from the maker of the technology it covers. It has 434,719 recorded installs.
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