Add documentation for Workload Identity fix #1461
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Previously, workloads would use the default compute service account on GKE, which allowed them to use Google APIs by default. This changed for some versions of GKE Autopilot (and will change for Standard) and requires some extra work to allow the OTel collector to send traces to Cloud Trace.
NimJay
approved these changes
Jan 24, 2023
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Thank you for this solution, @arbrown (and for acknowledging that this is a temporary solution). I have made minor edits to the README.md in 498300b.
Manually Tested
I have tested the commands on my own GKE cluster (standard with workload identity enabled).
Tracing worked! 👍
Log Severity
All the logs output by by the opentelemetrycollector Pod have a severity of "ERROR" — even if the log itself is not an ERROR (e.g., in the screenshot below, I've expanded an INFO log).
Have you been experiencing the same?
If so, I can create a GitHub issue so we can track this issue.
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Background
Previously, workloads would use the default compute service account on GKE, which allowed them to use Google APIs by default. This changed for some versions of GKE Autopilot (and will change for Standard) and requires some extra work to allow the OTel collector to send traces to Cloud Trace.
Related PRs or Issues
#1444
Future Work
I think this is just a temporary fix until we get a better idea about how to handle these Workload Identity changes. Using the default service account is likely not an appropriate long-term solution, but works for now until we have a unified approach for handling service accounts and permissions in the project.