Google Cloud Storage (GCS) configuration

GCS backend is configured in the storage block. Tempo requires a dedicated bucket since it maintains a top-level object structure and does not support a custom prefix to nest within a shared bucket.

storage:
    trace:
        backend: gcs                                              # store traces in gcs
        gcs:
            bucket_name: tempo                                    # store traces in this bucket
            chunk_buffer_size: 10485760                           # optional. buffer size for reads. default = 10MiB
            endpoint: https://storage.googleapis.com/storage/v1/  # optional. api endpoint override
            insecure: false                                       # optional. Set to true to disable authentication 
                                                                  #   and certificate checks.

Permissions

The following authentication methods are supported:

• GCP environment variable GOOGLE_APPLICATION_CREDENTIALS

The (service-)account that will communicate towards GCS should be assigned to the bucket which will receive the traces and should have the following IAM polices within the bucket:

• storage.objects.create
• storage.objects.delete
• storage.objects.get