Getting some error logs in truestreet about truestreet HOT 7 CLOSED

Does restarting truestreet process/container help ? Can you post logs and command line you are using ?

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I tried restarting it and getting same logs. I tried running truestreet on ubuntu machine and also on docker container.

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Is this ubuntu machine a google cloud VM ? Is docker container running on same machine/VM ? If these are remote then spanner can delete session after session being idle for long time, which could lead to this problem. However I think this error should have been retried.

Please provide more information about your setup to determine the next steps.

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Truestreet in deployed on DigitalOcean server as a docker container. It means, it is remote.

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Since this machine is external to cloud, you will need to properly authenticate and authorize docker using...
gcloud auth login
gcloud auth configure-docker

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It is authenticated and also connected with spanner but sometimes it gives above error. Prometheus is working fine.
Just want to now if this session error occurs, will data be lost?

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Session error is retried, however if problem persists for a long time, both truestreet or prometheus will drop buffered timeseries without sending to their remote storage. It is always a good idea to run two redundant (prometheus + truestreet + spanner schema) stacks to avoid data loss.

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