Source: kubestellar/kubestellar-mcp/commands/kustomize.md

Kustomize

Apply kustomize configurations to multiple clusters.

Usage

Build and apply kustomize overlays to or more clusters.

Examples

• “Apply kustomize from ./overlays/production to all clusters”
• “Build kustomize output from ./base”
• “Delete resources defined in ./overlays/staging kustomize”

What it does

1. Builds kustomize output from the specified path
2. Applies (or deletes) the rendered manifests to target clusters
3. Reports success/failure per cluster

MCP Tools Used

• kustomize_build - Render kustomize output without applying
• kustomize_apply - Build and apply to clusters
• kustomize_delete - Build and delete those resources

Implementation

Use the kustomize_apply tool with:

• path: Path to directory containing kustomization.yaml (required)
• dry_run: Preview without applying
• clusters: Target clusters (all if not specified)

Examples of Tool Calls

Build:

{
  "path": "./overlays/production"
}

Apply to all clusters:

{
  "path": "./overlays/production",
  "dry_run": false
}

Delete from specific clusters:

{
  "path": "./overlays/staging",
  "clusters": ["staging-1", "staging-2"]
}

Prerequisites

Requires either:

• kustomize CLI installed
• Or kubectl with kustomize support (kubectl kustomize)