gke-productionize

SKILL.md

GKE Productionize Skill

This skill acts as a high-level orchestrator for preparing a GKE cluster and its
workloads for production readiness.

[!IMPORTANT]
This is a meta-skill or orchestrator skill. You are
expected to invoke and run many other specialized skills listed in this
document as part of the overall productionization process. Do not attempt to
implement all production readiness features directly within this skill;
instead, use this skill to assess the environment and then delegate to the
specific skills for each domain.

Scope

This skill is adaptable to:

A single application (already on Kubernetes or not).

A set of applications.

A target cluster.

Workflow

1. Discovery Phase

Before making recommendations, discover the current state of the environment.

Cluster Discovery

Run these commands to understand the cluster setup:

Check cluster details: gcloud container clusters describe {cluster_name} --location {location} --project {project}

Check for Autopilot vs Standard: Look for the following block in the
describe output:

autopilot:
  enabled: true

Check release channel: Look for releaseChannel.

Workload Discovery

If a specific application is targeted, discover its configuration:

Get deployment/statefulset details: kubectl get deployment {app_name} -n {namespace} -o yaml

Check for dedicated namespace and labels: kubectl get namespace {namespace} -o yaml (Look for Pod Security Standards labels).

Check for dedicated service account usage: kubectl get pods -n {namespace} -o custom-columns="NAME:.metadata.name,SERVICE_ACCOUNT:.spec.serviceAccountName"

Check for resource requests and limits.

Check for liveness, readiness, and startup probes.

Check for HPA: kubectl get hpa -n {namespace}

Check for PDB: kubectl get pdb -n {namespace}

Check for NetworkPolicies: kubectl get networkpolicy -n {namespace}

2. Production Readiness Assessment

Before implementation, you MUST run the skills for each relevant specialized
area listed below and incorporate its guidance into your assessment and plan.
Failure to do so will result in a non-compliant production configuration.

A. App Onboarding (Pre-Kubernetes)

If the application is not yet running on GKE, you MUST run the
gke-app-onboarding skill for planning containerization, image building, and
basic deployment.

B. Scalability & Resource Management

Ensure workloads have appropriate resources and autoscaling.

Action: You MUST run the gke-workload-scaling skill for configuring
HPA, VPA, and resource limits.

C. Observability

Ensure adequate logging and monitoring are in place.

Action: You MUST run the gke-observability skill for setting up Cloud
Logging, Monitoring, and Managed Prometheus.

D. Reliability

Ensure high availability and graceful degradation.

Action: You MUST run the gke-reliability skill for configuring
regional clusters, PDBs, and health probes.

E. Security

Harden the cluster and workloads.

Action: You MUST run the gke-platform-security and
gke-workload-security skills for Workload Identity, Network Policies, and
Shielded Nodes.

Namespace Isolation: Ensure workloads run in dedicated namespaces with
Pod Security Standards (PSS) enforced via labels.

Least Privilege: Ensure workloads use dedicated ServiceAccounts instead
of the default ServiceAccount.

F. Backup & Disaster Recovery

Ensure stateful data is protected.

Action: You MUST run the gke-backup-dr skill for configuring Backup
for GKE and restore procedures.

G. Edge Security & Ingress

Secure external access.

Action: You MUST run the gke-service-networking skill for Gateway API,
Ingress, and Cloud Armor.

H. Cost Optimization

Ensure efficient use of resources.

Action: You MUST run the gke-cost-optimization skill for strategies on
rightsizing, quotas, and Spot VMs.

I. Upgrades & Maintenance Posture

Ensure a safe, predictable upgrade posture.

Action: You MUST run the gke-upgrades skill for release channel
selection, maintenance windows/exclusions, and node pool upgrade strategy.

J. Golden Path Defaults Audit

Ensure the cluster configuration matches recommended defaults.

Action: You MUST run the gke-golden-path skill to compare the cluster
against golden path defaults and report deviations with severity and
remediation.

3. Production Readiness Scoring

After the assessment, provide a summary report with a RAG (Red, Amber, Green)
status for each area and an overall readiness score. This helps prioritize
remediation efforts.

Apply this rubric deterministically so repeated assessments of the same
environment produce the same result:

Per-domain criteria: For each assessed domain (A-J), list the concrete
checks performed (from the domain skill's guidance) and classify each check
as pass, fail-critical (production-blocking, e.g., no resource
requests, no backups for stateful data, public control plane in a locked
down environment), or fail-minor (improvement, e.g., missing VPA
recommendations, no Spot usage for batch).

RAG mapping (per domain):

Red = one or more fail-critical checks.

Amber = no fail-critical, but one or more fail-minor checks.

Green = all checks pass.

Domain score: Green = 100, Amber = 50, Red = 0.

Weighted overall score: weight Security, Reliability, and Backup/DR at
2x; all other assessed domains at 1x. Overall score = sum(domain score x
weight) / sum(weights), rounded to the nearest integer. Exclude domains
that are not applicable (e.g., Backup/DR for fully stateless workloads) from
both sums and note the exclusion.

Readiness verdict: >= 90 with no Red domains = "Production ready";
70-89 with no Red domains = "Ready with follow-ups"; anything else =
"Not production ready".

In the report, show the per-domain check lists, RAG status, weights, and the
computed overall score.

Adaptability Guidelines

Single App: Focus on Health Probes, HPA, Resource Limits, PDB, and
Workload Identity for that specific app.

Cluster Wide: Focus on Cluster Autoscaler, Multi-zonal setup, Release
Channels, Maintenance Windows, and default Network Policies.

Proactive Execution: Proactively execute relevant skills (e.g.,
observability, security, scaling, reliability) to assess and propose
improvements, seeking user confirmation before applying state-changing
implementations.