stackdriver-logging service runs stackdriver container image to export logs to Cloud Logging. Note: This recommendation is not applicable for COS images using Fluent-bit as it isn't containerized. Rationale: If the logging agent is not set correctly, the logs cannot be exported to Cloud Logging.
Solution
Edit the LOGGING_AGENT_DOCKER_IMAGE variable in the /etc/stackdriver/env_vars file to set the correct logging agent. Run the following command to restart stackdriver-logging service : # systemctl restart stackdriver-logging /etc is stateless on Container-Optimized OS. Therefore, /etc cannot be used to make these changes persistent across reboots. The steps mentioned above needs to be performed after every boot.