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Next time you see a garbled http-3A-2F-2F in a log or configuration, you will know exactly how to fix it—and exactly what power you are unlocking from the Google metadata server.
: It is most commonly used to programmatically retrieve OAuth2 access tokens or OpenID Connect (OIDC) identity tokens . These tokens allow your code to authenticate with other Google Cloud APIs (like Storage or BigQuery) without hardcoding credentials.
: Alternatively, you can use the static IP address http://169.254.169.254/computeMetadata/v1/instance/service-accounts/ , which resolves to the same internal service. Security & Best Practices
: /computeMetadata/v1/instance/service-accounts/ - This path is used to retrieve information about the service accounts associated with the current Compute Engine instance.
If you’re building a feature to fetch this URL, here’s a safe implementation approach (in Python, but adaptable):
Furthermore, this mechanism supports the principle of . Developers can assign a specific service account to a VM that only has "read" access to a specific bucket. When the code fetches a URL from the metadata server, the token it receives will carry only those restricted permissions, ensuring that a vulnerability in one part of the system doesn't lead to a total data breach. Conclusion
Example token response (JSON):
Demasiadas solicitudes: Esto ocurre porque algunos extremos usan límite de frecuencia para evitar la sobrecarga en el servicio de ... Google Cloud Documentation