All BOS data is stored in an etcd database running in pods in the services namespace.
ncn-mw# kubectl get pods -n services -l app.kubernetes.io/instance=cray-bos,app.kubernetes.io/name=etcd
Example output:
NAME READY STATUS RESTARTS AGE
cray-bos-etcd-0 2/2 Running 0 4d
cray-bos-etcd-1 2/2 Running 0 4d
cray-bos-etcd-2 2/2 Running 0 4d
The Helm chart for the BOS database is located in the
Cray-HPE/bos open source GitHub repository.