From castai-pack
Sets up local Kubernetes dev loop with CAST AI cost monitoring for testing autoscaler policies and iterating Terraform configs.
npx claudepluginhub jeremylongshore/claude-code-plugins-plus-skills --plugin castai-packThis skill is limited to using the following tools:
Fast iteration workflow for CAST AI integrations: test autoscaler policies in a dev cluster, validate Terraform modules before applying to production, and use the CAST AI API to measure savings impact during development.
Installs CAST AI agent on Kubernetes clusters via Helm charts or Terraform with API key auth. For EKS/GKE/AKS onboarding, cost optimization, autoscaling.
Sets up local Kubernetes clusters with kind, k3d, or minikube, including ingress, local registry, and Skaffold/Tilt integration for fast rebuild-redeploy cycles in development and testing.
Provides production DevOps patterns for GitHub Actions CI/CD, Docker multi-stage builds, Kubernetes, Terraform IaC, OpenTelemetry observability, GitOps, security scanning, and cost optimization.
Share bugs, ideas, or general feedback.
Fast iteration workflow for CAST AI integrations: test autoscaler policies in a dev cluster, validate Terraform modules before applying to production, and use the CAST AI API to measure savings impact during development.
castai-install-auth setupkubectl, helm, and optionally terraform installedmy-castai-infra/
├── terraform/
│ ├── environments/
│ │ ├── dev.tfvars
│ │ ├── staging.tfvars
│ │ └── prod.tfvars
│ ├── modules/
│ │ └── castai-cluster/
│ │ ├── main.tf
│ │ ├── variables.tf
│ │ └── outputs.tf
│ └── main.tf
├── policies/
│ ├── dev-policy.json
│ └── prod-policy.json
├── scripts/
│ ├── check-savings.sh
│ └── validate-policies.sh
├── .env.dev # Dev API key (git-ignored)
└── .env.example
# Connect your dev cluster (read-only first)
helm upgrade --install castai-agent castai-helm/castai-agent \
-n castai-agent --create-namespace \
--set apiKey="${CASTAI_API_KEY_DEV}" \
--set provider="eks"
# Apply development-safe autoscaler policy
curl -X PUT -H "X-API-Key: ${CASTAI_API_KEY_DEV}" \
-H "Content-Type: application/json" \
"https://api.cast.ai/v1/kubernetes/clusters/${CASTAI_CLUSTER_ID}/policies" \
-d '{
"enabled": true,
"unschedulablePods": { "enabled": true },
"nodeDownscaler": {
"enabled": true,
"emptyNodes": { "enabled": true, "delaySeconds": 300 }
},
"clusterLimits": {
"enabled": true,
"cpu": { "minCores": 2, "maxCores": 16 }
}
}'
#!/bin/bash
# scripts/check-savings.sh
set -euo pipefail
API_KEY="${CASTAI_API_KEY_DEV}"
CLUSTER_ID="${CASTAI_CLUSTER_ID}"
echo "=== CAST AI Dev Cluster Savings ==="
curl -s -H "X-API-Key: ${API_KEY}" \
"https://api.cast.ai/v1/kubernetes/clusters/${CLUSTER_ID}/savings" \
| jq '{
monthlySavings: .monthlySavings,
percentage: .savingsPercentage,
spotNodes: [.nodes[] | select(.lifecycle == "spot")] | length,
totalNodes: [.nodes[]] | length
}'
# Plan with dev variables
cd terraform/
terraform plan -var-file=environments/dev.tfvars -out=plan.tfplan
# Apply and check CAST AI result
terraform apply plan.tfplan
# Verify policies took effect
curl -s -H "X-API-Key: ${CASTAI_API_KEY_DEV}" \
"https://api.cast.ai/v1/kubernetes/clusters/${CASTAI_CLUSTER_ID}/policies" \
| jq .
# Terminal 1: Watch CAST AI node operations
watch -n 15 'curl -s -H "X-API-Key: ${CASTAI_API_KEY_DEV}" \
"https://api.cast.ai/v1/kubernetes/external-clusters/${CASTAI_CLUSTER_ID}/nodes" \
| jq "[.items[] | {name, instanceType, lifecycle, age: .createdAt}] | length"'
# Terminal 2: Watch kubectl node status
kubectl get nodes -w
| Error | Cause | Solution |
|---|---|---|
| Dev cluster not found | Wrong cluster ID | List clusters with API first |
| Policy rejected | Invalid JSON | Validate with jq . < policy.json |
| Terraform drift | Manual console changes | Run terraform refresh |
| Agent offline after restart | Helm release stale | helm upgrade --install again |
See castai-sdk-patterns for reusable API wrapper patterns.