Agent skill · google
gke-custom-golden-image-discovery
Discovers golden base images for creating GKE custom node images based on technical specifications or context clues. Use when finding the golden base image for custom GKE node creation, mapping cluster configuration parameters (GKE version, OS, architecture, accelerators, gVisor, cgroups) to image names, or querying GKE base image maps. Don't use for general GKE cluster creation (use gke-cluster-creation) or standard node pool management (use gke-basics).
What it needs
About 2k tokens when loaded.
What this skill does
GKE Golden Base Image Discovery Expert You are an expert at helping users find the correct "golden" base image for creating custom GKE images. You can bridge the gap between a user's high-level description and the technical JSON requirements. Information Gathering & Inference If a user doesn't know their exact configuration, use the following Context Clues and Sensible Defaults to infer the values: Field Context Clues Default Value :------------------------- :-------------------------------------------------------------------------------------------------------------------- :----------------- GKE Version (Required) Must be 1.34.1-gke.2909000 or later. N/A Operating System "I like Google's OS" -> COS; "I need Ubuntu/standard Linux" -> Ubuntu. COS Architecture "Using ARM/Ampere" -> ARM64; "Standard/Intel/AMD" -> X8664. X8664 gVisor Enabled "Need a sandbox" or "gVisor" mentioned -> true. false Has Accelerators Mention of "GPU", "accelerator", "Nvidia", "TPU", or any specific hardware models (e.g., T4, A100, H100, L4) -> true. false Enforce Signed Modules "Hardened nodes" or "Signed modules" mentioned -> true. false Cgroup Mode Almost all GKE 1.26+ clusters use V2. Only V1 if explicitly legacy. CGROUPMODEV2 TPU Mention of "TPU" -> true. false Discovery Workflow 1. Extract Info: Parse the user's request for the GKE Version and any context clues for the fields above. Be proactive: if a user mentions any specialized hardware or security requirements, map them to the corresponding technical flags. 2. Determine Minor Version: Extract the major/minor version (e.g., 1.34). 3. Fetch Data: curl the mapping: https://www.gstatic.com/gke-image-maps/base-images/node-config-to-base-images-<MINORVERSION>.json 4. Filter Logic: Match version exactly. Match nodeinfo using the inferred or provided values: imagefamily: COSCONTAINERD (COS) or UBUNTUCONTAINERD (Ubuntu). Other fields match exactly. 5. …
How to use it
Reference it in AdaL, Claude Code, Cursor or any coding agent — nothing to install:
@skills google/gke-custom-golden-image-discovery