Marketing Foundation
Compact two-skill starter: clarify positioning and choose a lead magnet. Use Marketing Launch for the broader eight-skill go-to-market workflow.
The tunnel uses the same cards as the catalogue. Browse only as deep as needed — or load a broad bundle immediately.
SEO, Sales, Agents or another broad area → one bundle call → work.
Read-only access to published skills. Default 8, maximum 10 skills / 120,000 characters.
Compact two-skill starter: clarify positioning and choose a lead magnet. Use Marketing Launch for the broader eight-skill go-to-market workflow.
Build an evidence-led marketing plan from ICP and competition through positioning, campaigns, growth and measurement.
Diagnose architecture and context, plan agent-team responsibilities, then organize project context and session handoffs. Memory and cost-runtime reviews remain outside this pack.
Review the journey from landing page and lead capture through registration, first value and transparent upgrades.
Plan a campaign, draft its channel content and review the work against actual brand guidance.
Prioritize an editorial roadmap and plan how to launch and distribute it across suitable channels.
Understand customer needs, compare competitors and plan a community around real member value.
Choose a relevant lead magnet, then draft a permission-based nurture journey with entry, suppression and exit rules.
Define the API contract, then plan how to observe its latency, failures and retries. Guidance and checklist; no production changes.
Profile a dataset, choose and interpret statistical methods, then validate calculations and conclusions before sharing.
Define the target account, prioritize buying signals, plan a human LinkedIn engagement routine and prepare evidence-led responses to buyer concerns.
Generates and updates secure, production-ready Kubernetes YAML manifests optimized for GKE Autopilot and GKE Standard clusters. Use when creating or modifying GKE deployment manifests, configuring container security contexts, setting C
---
name: gke-manifest-generation
metadata:
version: "1.0.0"
category: Containers
description: >-
Generates and updates secure, production-ready Kubernetes YAML manifests optimized for GKE Autopilot and GKE Standard clusters. Use when creating or modifying GKE deployment manifests, configuring container security contexts, setting CPU/memory resource limits, defining readiness/liveness/startup probes, mounting secrets and volumes, configuring GKE Gateway API routes, targeting Spot VMs, or deploying AI model inference workloads (vLLM, TGI, Gemma). Don't use for live cluster operations, pod troubleshooting (use gke-workload-troubleshooting), or cluster infrastructure provisioning (use gke-cluster-creation).
---
# GKE Manifest Generation Skill
This skill provides guidelines, tooling integration, and templates to translate
natural language descriptions or application code changes into secure,
compliant, and cost-effective Kubernetes YAML manifests optimized for both GKE
Autopilot and GKE Standard clusters.
## Core Rules & Verification
When generating or updating YAML manifests, you **must** strictly adhere to the
following rules:
### 1. Namespace & Resource Isolation
- **Explicit Namespace**: Always declare `namespace: {namespace}` explicitly
in the metadata of every resource (Deployments, Services, ConfigMaps,
Secrets, PVCs, Roles, bindings). Map it to the namespace configured in your
active `SETTINGS.md`. Never omit the namespace.
- **Dedicated ServiceAccount**: Avoid using the namespace's `default`
ServiceAccount. Always create and reference a dedicated `ServiceAccount`
(e.g., `devteam-agent-sa`) for each microservice.
### 2. GKE Resource Tuning (Autopilot & Standard)
- **Resources Requests & Limits**: Always specify CPU and Memory requests and
limits for all containers.
- *GKE Autopilot*: Requests determine pod billing directly; requests and
limits must be equal. If they differ, Autopilot will automatically scale
requests up to match limits, which can significantly increase costs.
- *GKE Standard*: Requests ensure stable scheduling and bin-packing;
limits prevent resource starvation/noisy-neighbor issues.
- **Density Defaults**: For stateless apps or sidecars on GKE Standard,
default to conservative requests (e.g., `requests.cpu: "100m"` or `"200m"`,
`requests.memory: "256Mi"` or `"512Mi"`) with burstable limits. Use a
reasonable overcommit ratio for limits (e.g., 2x to 4x requests, like
`limits.cpu: "400m"` to `"800m"`, and `limits.memory: "512Mi"` to `"1Gi"`).
Avoid excessive overcommit limits (like `limits.cpu: "4"` for a `100m`
request) to prevent severe CPU throttling and latency degradation under
heavy scheduling load, particularly in environments without guaranteed node
shares.
- **Spot VMs for Staging/Dev**: For non-production workloads (e.g., namespaces
containing `-test`, `-dev`, or `-staging`), or if the user requests cost
optimization, automatically target GKE Spot VMs. This requires injecting
both the `nodeSelector` targeting Spot VMs AND the corresponding toleration
to tolerate the Spot VM taint:
```yaml
nodeSelector:
cloud.google.com/gke-spot: "true"
tolerations:
- key: "cloud.google.com/gke-spot"
operator: "Equal"
value: "true"
effect: "NoSchedule"
```
(On GKE Standard, this assumes a Spot node pool is configured).
### 3. Container Security Hardening (Pod Security Standards)
- **Non-Root Execution**: Always configure `securityContext` at the Pod level
(and container level if overriding) to run as a non-root user (e.g.,
`runAsNonRoot: true`, `runAsUser: 10000`, `runAsGroup: 10000`, `fsGroup:
10000`). This is strictly enforced on GKE Autopilot and is a critical
security baseline for GKE Standard.
- **Minimal Privileges**: Always set `allowPrivilegeEscalation: false` and
`seccompProfile: {type: RuntimeDefault}`.
- **Read-Only Root Filesystem**: Set `readOnlyRootFilesystem: true` to prevent
modifications to the container image filesystem.
- *Writable Directory Fallback*: If `readOnlyRootFilesystem` is enabled,
mount a local `emptyDir` volume to `/tmp` or `/var/run/` to allow
applications (like Java/Nginx) to write temp files without crashing.
- **Secret Volume Mounting**: Prefer mounting Secrets as read-only files
(configured in the `volumes` spec with `defaultMode: 0400`) instead of
mapping them as environment variables, unless the application framework
exclusively supports env-var based configuration. This prevents secrets
leaking into application logs.
### 4. Health Checking (Mandatory Probes)
- **Liveness & Readiness Probes**: Every Deployment container must define both
`livenessProbe` and `readinessProbe`.
- **Web/API**: Use `httpGet` probes.
- **TCP Services**: Use `tcpSocket` probes.
- **Databases/Caches**: Use command-based `exec` probes (e.g.,
`exec.command: ["redis-cli", "ping"]`).
- **Startup Probes for Slow-Starting Apps**: For applications with slow boot
times (e.g., Java spring boot, complex Python scripts, LLM model servers),
you **must** also define a `startupProbe`. When a `startupProbe` is defined,
the liveness and readiness probes are disabled until it succeeds, preventing
Kubernetes from prematurely killing the pod during startup:
```yaml
startupProbe:
httpGet:
path: /healthz
port: 8080
failureThreshold: 30
periodSeconds: 10
```
- **Sensible Defaults**: Set `initialDelaySeconds: 5` to `15` depending on
startup time (e.g., Java requires a longer delay than Go/Nginx).
### 5. Services & Ingress Routing
- **Internal ClusterIP**: Default all internal microservices to `type:
ClusterIP`. Never use `type: LoadBalancer` or `NodePort` unless the workload
is explicitly intended to be publicly accessible from the internet.
- **Port Naming**: Always assign clear, standard names to service and
container ports (e.g., `name: http-web` or `name: grpc-api`) to enable
automatic protocol discovery, tracing, and Web App routing.
- **Prefer Gateway API**: When exposing APIs externally, prioritize using GKE
Gateway API (`Gateway` and `HTTPRoute` resources) over legacy `Ingress`
objects to enable advanced L7 routing and security features (e.g., Cloud
Armor).
### 6. Volume Mounts, StorageClasses & subPath Safety
- **Avoid Directory Overwrites**: When mounting a `ConfigMap` or `Secret` to
an application directory containing other files (like Nginx public
directories), always use `subPath` to overlay only the specific file.
*Caveat*: Note that containers using `subPath` volume mounts do not receive
automatic configuration updates if the underlying ConfigMap or Secret is
modified; pods must be restarted manually to pick up changes.
- **StorageClass Selection**: Use the correct GKE storage class in
PersistentVolumeClaims:
- *CSI Driver Clusters (Autopilot & Modern Standard)*: Use `standard-rwo`
(default balanced PD) or `premium-rwo` (SSD PD).
- *Legacy Standard Clusters*: Use `standard` (default PD) or `premium`
(SSD PD) if `standard-rwo`/`premium-rwo` are not configured.
- *Database rule*: Use SSD storage classes (`premium-rwo` or `premium`)
only when the prompt explicitly requests high IOPS, low latency, or
database storage.
### 7. High Availability on GKE
- **Topology Spread**: For deployments with >1 replica, use `podAntiAffinity`
or `topologySpreadConstraints` with `topologyKey: "kubernetes.io/hostname"`
to distribute pods across GKE nodes and availability zones.
- **PodDisruptionBudget**: For deployments with >1 replica, declare a
`PodDisruptionBudget` to guarantee minimum replica availability during
voluntary GKE node upgrades and maintenance cycles.
### 8. Updates & Server-Side Apply Reconciliations
- **Stable List Keys**: Under Kubernetes Server-Side Apply (SSA), elements in
associative lists (like volumes, volume mounts, ports, and container
definitions) are matched and merged by their unique identifier keys
(typically `name`). You **must** keep the `name` key stable when modifying
properties of an existing list item. Renaming the `name` key will cause SSA
to create a brand new entry and leave the old entry intact (orphaned) rather
than modifying it.
- **Minimal Diff**: Make only the changes requested. Adhere closely to
existing labels, annotations, and conventions.
--------------------------------------------------------------------------------
## Specialty Workloads: GKE AI/Inference Serving (vLLM, TGI, etc.)
For model serving workloads, prioritize using optimized tooling like GKE
Inference Quickstart if available. If generating manually:
1. **GPU Request & Allocation**:
- Always request `nvidia.com/gpu` in both `requests` and `limits`.
- Add a `nodeSelector` or node affinity targeting the desired GKE
accelerator tag (e.g., `cloud.google.com/gke-accelerator: nvidia-l4`).
2. **Shared Memory Boost**:
- Model servers require high shared memory (`/dev/shm`) for inter-process
communications. Always declare and mount an `emptyDir` volume with
`medium: Memory` to `/dev/shm`.
3. **Weight Loading Optimization**:
- Mount model weight directories (like GCS buckets) using the GKE GCS Fuse
CSI driver (`csi.storage.gke.io`) as `readOnly: true` for efficient
cold-starts.
--------------------------------------------------------------------------------
## Tooling & Grounding Guidelines
When generating manifests, you should leverage the following tooling to reduce
hallucinations and optimize configurations:
1. **Inference Workloads (GKE Inference Quickstart CLI)**:
- Make sure you have the
[Google Cloud SDK](https://cloud.google.com/sdk/docs/install) installed.
- For all AI/LLM inference workloads (e.g. model serving), you **must**
prioritize using the `gcloud` CLI GKE Inference Quickstart command to
generate the optimized manifests instead of writing them manually:
```bash
gcloud container ai profiles manifests create \
--model={model_name} \
--model-server={server_name} \
--accelerator-type={accelerator_type} \
--output=manifest \
--output-path={output_file_path}
```
- *Constraint*: You must include all resources returned by this command
(Deployments, Services, PodMonitoring, etc.) without filtering.
2. **Grounding in Official Documentation (Developer Knowledge API)**:
- For GKE-specific features, API defaults, manifest examples, or security
contexts, you **must** query Google's developer knowledge base to
retrieve official GKE documentation:
- **`answer_query`**: Use this to ask direct questions (e.g., *"How to
configure GCS Fuse CSI driver in GKE"*). This is the preferred tool
for general queries.
- **`search_documents`**: Use this to search for relevant GKE guides
or examples when you don't have a specific question.
- **`get_document`**: Use this to fetch full document contents when
you have a specific document ID.
--------------------------------------------------------------------------------
## Reference Examples
For detailed, production-ready manifest templates, consult the following
reference guides:
- **[Basic Hardened Nginx Workload](references/basic-workload.md)**:
Production-ready deployment with dedicated service account, security
contexts, probes, anti-affinity, and PodDisruptionBudget.
- **[Network Policy](references/network-policy.md)**: Default-deny ingress
network policy and selective ingress allowance for specific apps.
- **[AI/LLM Inference Workload](references/ai-inference.md)**: GPU resource
allocation, Workload Identity, GCS FUSE CSI driver mounting, `/dev/shm`
shared memory boost, and startup probes.
- **[GKE Gateway API Routing](references/gateway-api.md)**: Exposing workloads
using GKE L7 Gateway API (`Gateway` and `HTTPRoute` resources).
Generates and updates secure, production-ready Kubernetes YAML manifests optimized for GKE Autopilot and GKE Standard clusters. Use when creating or modifying GKE deployment manifests, configuring container security contexts, setting C
Complete original Google guidance with source attribution and declared execution limits.
Use supplied evidence to plan, review or explain the relevant workflow within authorized scope.
Authorized project context, resource scope, current configuration evidence and a named decision owner.
The original is official Apache-2.0 guidance. It may show cloud commands, deployment examples or credential placeholders; those are not run, configured, installed, or authorized by loading this catalog entry. Verify current provider documentation and resource-owner approval before external changes.
Use Google GKE Manifest Generation for [TASK]. Start from authorized project context and supplied evidence. Identify unknowns and propose changes for review; do not run commands, connect accounts, deploy, transfer data, or incur charges from this text alone.
Automatic cloud execution, credential handling, account access, deployments, destructive changes, or claims that examples are configured and verified.
M11 added German routing, integrity tracking and a strict no-execution boundary. Original attribution: Google (google/skills repository). The original is official Apache-2.0 guidance. It may show cloud commands, deployment examples or credential placeholders; those are not run, configured, installed, or authorized by loading this catalog entry. Verify current provider documentation and resource-owner approval before external changes.
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