Workload Manager Basics

Trigger: Use when working with Google Cloud Workload Manager — setup, configuration, and best practices.

Workload Manager Basics

Workload Manager validates enterprise workloads against Google Cloud best practices and recommendations. The public client libraries are centered on evaluations: define a resource scope, choose built-in or custom rules, run an evaluation, then inspect results and scanned resources.

Use This Flow

flowchart LR
    Rules["List rules"] --> Eval["Create or update evaluation"]
    Resources["Project, folder, or org scope"] --> Eval
    Eval --> Run["Run evaluation"]
    Run --> Results["Inspect evaluation results"]
    Results --> Remediate["Remediate findings"]
    Results --> Export["Optional BigQuery export"]

Core API Constraints

To ensure compatibility, security, and successful integration:

• Public Surface Only: You MUST strictly interact with Workload Manager using the official public google-cloud-workloadmanager client library or the public REST API (workloadmanager.googleapis.com/v1).
• No Internal or Undocumented APIs: Do NOT attempt to use internal RPC protocols, private service backends, or undocumented discovery mechanisms. They are not supported for public integrations and will fail.
• No Service-Specific CLI: There is no public gcloud workload-manager CLI command group. Use gcloud only for authentication, IAM role assignment, and fetching raw REST tokens.
• Sandbox Execution Robustness (Auth/Mock Fallbacks): When gcloud authentication or Workload Manager API calls fail in sandboxed or restricted environments (e.g., due to Context Aware Access token blocks, missing API enablement, or mock resources returning 404/403), immediately fall back to presenting example code and static findings from your references instead of entering retry loops. Present the correct client library code structure or REST API payload example, clearly explain the auth or resource limitation, and list typical rules or mock findings statically to satisfy the request.

Prerequisites

1. Enable the Workload Manager API:

   gcloud services enable workloadmanager.googleapis.com --quiet
   

2. Authenticate locally using Application Default Credentials (ADC) before using client libraries:

   gcloud auth application-default login
   

3. Ensure the Workload Manager service agent has the required roles granted in your project (mandatory for API/client library usage, see IAM & Security).

4. Grant the least-privileged role needed for the task. Start with roles/workloadmanager.viewer for read-only access to evaluation resources and use roles/workloadmanager.evaluationAdmin or roles/workloadmanager.admin only when creating, updating, running, or deleting evaluations.

Quick Client Library Example

Use the Python client library for the first working automation path:

python3 -m pip install --upgrade google-cloud-workloadmanager

from google.cloud import workloadmanager_v1

project_id = "PROJECT_ID"
location = "LOCATION"
parent = f"projects/{project_id}/locations/{location}"

client = workloadmanager_v1.WorkloadManagerClient()

rules = client.list_rules(
    request=workloadmanager_v1.ListRulesRequest(
        parent=parent,
        evaluation_type=workloadmanager_v1.Evaluation.EvaluationType.OTHER,
    )
)

for rule in rules.rules:
    print(rule.name, rule.display_name, rule.severity)

Reference Directory

• Core Concepts: Evaluations, rules, results, scanned resources, supported workload types, and API shape.

• General Best Practices: Google Cloud general best-practice posture checks, OTHER evaluation guidance, custom Rego rules, and scale/automation patterns.

• Client Libraries: Python and Go client library examples for listing rules, creating evaluations, running evaluations, and reading findings.

• REST Usage: Direct REST examples for the public Workload Manager API and operations polling.

• Public CLI Status: No documented service-specific gcloud workload-manager command group; use gcloud only for auth, IAM, API enablement, and REST tokens.

• Public MCP Status: No documented public Workload Manager MCP server; use client libraries or REST API instead.

• Setup Prerequisites: Terraform examples only for adjacent prerequisites such as API enablement, IAM, BigQuery export datasets, and KMS keys. This is not Workload Manager resource management.

• IAM & Security: Workload Manager roles, least-privilege guidance, service agents, data handling, and CMEK notes.

If product behavior or API fields are not covered here, check the current Workload Manager product documentation and client library reference before implementing.

Authoritative References

• Workload Manager overview
• Google Cloud best practices
• Workload Manager REST API
• About custom rules
• Write custom rules using Rego
• Python package
• Workload Manager IAM roles
• For additional information, use the Developer Knowledge MCP server search_documents tool.

Additional Context

• Mastering cloud posture management with Workload Manager