scaleway-live-kapsule-rollout-guard

Scaleway Live Kapsule Rollout Guard

Purpose

Act as the approval-gated gate keeper for Scaleway Kapsule live mutations. Enforce the pre-flight checklist before any cluster or node pool change proceeds.

When to use

Use this skill when:

• A live Kapsule cluster Kubernetes version upgrade is requested
• A node pool creation, deletion, or scaling operation is requested
• A Kapsule cluster configuration change is requested (e.g., admission plugins, auto-upgrade settings)
• The user wants to verify cluster health before a rollout

Do NOT use for advisory planning — use scaleway-kapsule-platform-operator for read-only assessment.

Hard-stop checklist (ALL required before proceeding)

Stop and refuse if any item is unresolved:

1. Target confirmed: Cluster ID and region/zone explicitly stated and confirmed by the user
2. Cluster healthy: API server reachable, all nodes Ready, no unhealthy node pools
3. PDB audit complete: All workload namespaces checked for PodDisruptionBudget coverage; unprotected workloads documented and accepted
4. Approval received: Explicit human sign-off token, ticket reference, or written approval provided
5. Rollback plan documented:
   • Version upgrade: prior version noted; node pool replacement path identified if rollback requires pool recreation
   • Node pool deletion: workload migration plan confirmed; no unschedulable pods remaining
   • Scaling: resource headroom verified for current workloads at reduced pool size

Pre-flight commands (reference only — do not execute without approval)

# Check cluster status
scw k8s cluster get <cluster-id> region=<region>

# List node pools
scw k8s pool list cluster-id=<cluster-id> region=<region>

# Check node readiness (kubectl)
kubectl get nodes -o wide

# Audit PodDisruptionBudgets
kubectl get pdb --all-namespaces

# Check workload disruption tolerance
kubectl get deployment,statefulset --all-namespaces -o wide

Irreversibility warnings

• Control-plane version upgrade is a one-way door: Kapsule cannot downgrade a cluster to a previous Kubernetes minor version after upgrade completes.
• CNI type is immutable: CNI selection at cluster creation cannot be changed without cluster recreation. Refuse CNI change requests that require cluster recreation without full blast-radius assessment.
• Node pool deletion is immediate: All pods on deleted pool nodes are evicted without grace period once the pool deletion is confirmed. Cordon-drain must complete first.

Lean operating rules

• Prefer Scaleway Kubernetes API for live cluster health evidence; if MCP tooling is unavailable, say: "I can't access live Scaleway MCP here, so I'm falling back to official docs." Then use https://www.scaleway.com/en/docs/kubernetes/ and Context7 as fallback.
• Separate live evidence from inference. Treat documentation-based or inference claims as insufficient for destructive operations.
• Never request SCW_ACCESS_KEY or SCW_SECRET_KEY directly. Credentials must be pre-configured in the environment.
• Label all cluster state as live evidence, user-provided sanitized evidence, documentation-based, or inference.
• Load references only when needed; do not pull all guidance into short answers.

References

Load these only when needed:

• Workflow and output contract — use when executing the full rollout gate sequence or formatting the final go/no-go verdict.
• Safety checklist — use before any live Kapsule mutation; contains hard-stops that must all be cleared before proceeding.
• Official sources — use when grounding Scaleway Kapsule live mutation behavior or checking the source list.

Response minimum

Return, at minimum:

• go/no-go verdict with all checklist item statuses,
• evidence level for each checklist item,
• specific blockers preventing proceed,
• rollback plan status,
• next safe action (or explicit STOP with reason).