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krishicks
6dbe4adc56
Supervisor OCSF events reached only the sandbox's local JSONL file and the shorthand log lines sent to the gateway, so collectors had no structured copy of most of the security record. When the gateway has `[openshell.gateway.otlp.ocsf]` configured, compute drivers now pass its endpoint and schema version to supervisors, which export their own OCSF events directly as OTLP log records. Supervisors already have egress, so the gateway and its supervisor connection carry no extra load. Supervisors use the same `openshell-otel` exporter as the gateway, with a supervisor resource identity that includes `openshell.sandbox.id` and `openshell.gateway.name`, so telemetry from sandboxes of different gateways sharing a collector can be told apart. This applies to supervisor spans too. Drivers pass the settings to supervisors as `OPENSHELL_OTLP_OCSF_ENDPOINT`, `OPENSHELL_OTLP_OCSF_SCHEMA_VERSION`, and `OPENSHELL_GATEWAY_NAME`; the gateway passes them to the VM driver as arguments. Collector headers that the gateway uses for OCSF export (`OTEL_EXPORTER_OTLP_LOGS_HEADERS`, else `OTEL_EXPORTER_OTLP_HEADERS`) travel in each sandbox's supervisor authentication bundle, which only the supervisor reads, so authenticated collectors accept supervisor records without exposing credentials to the workload. The VM driver now sends SIGTERM and waits for the supervisor to exit before closing its liveness pipe. Closing the pipe first made the supervisor exit at once and drop queued records. Closes #4544 Refs #2892 Signed-off-by: Kris Hicks <khicks@nvidia.com>