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84eab90000
When not running locally, the logging formatter is set to convert the log record to a single-line JSON string that Stackdriver logging agent running in GKE will pick up and parse correctly. Also removed redundant logging handler in the proxy frontend connection. They have two problems: 1) it is possible to leak PII when all frontend traffic is logged, such as client IPs. Even though this is less of a concern because the GCP TCP proxy load balancer masquerade source IPs. 2) We are only logging the HTTP request/response that the frontend connection is sending to/receiving from the backend connection, but the backend already has its own logging handler to log the same message that it gets from/sends to the GAE app, so the logging in the frontend connection does not really give extra information. Logging of some potential PII information such as the source IP of a proxied connection are also removed. Thirdly, added a k8s autoscaling object that scales the containers based on CPU load. The default target load is 80%. This, in connection with GKE cluster VM autoscaling, means that when traffic is low, we'll only have one VM running one container of the proxy. Fixes a bug where the MetricsComponent generates a separate ProxyConfig that does not call parse method on the command line args passed, resulting default Environment always being used in constructing the metric reporter. Lastly a little bit of cleaning of the MOE config script, no newlines are necessary as the BUILD are formatted after string substitution. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=188029019 |
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