Diagnostic Tools | NVIDIA Infra Controller

Use this page as a command reference while investigating a stuck object or site operation incident.

CLI Setup

nico-admin-cli is the primary operator CLI for NICo site state.

$ cargo build -p carbide-admin-cli

Common connection options:

Option	Meaning
`-c <url>`	NICo API gRPC endpoint.
`-f json`	JSON output for scripting.
`API_URL`	Environment variable for the API URL.
`https_proxy=socks5://...`	SOCKS5 proxy when reaching the site from off-site.

Common Commands

Need	Command
API version or reachability	`nico-admin-cli version`, `nico-admin-cli ping`
All managed hosts	`nico-admin-cli managed-host show --all`
One managed host	`nico-admin-cli managed-host show <host-machine-id>`
Machine event history	`nico-admin-cli -f json machine show <machine-id>`
Debug bundle	`nico-admin-cli managed-host debug-bundle <machine-id> --start-time <time>`
Maintenance mode	`nico-admin-cli managed-host maintenance on --host <host-machine-id> --reference "INC-123"`
Health reports	`nico-admin-cli machine health-report show <machine-id>`
Site Explorer reports	`nico-admin-cli site-explorer get-report all`
Redfish browse	`nico-admin-cli redfish browse --address <bmc-ip> <uri>`
Network segments	`nico-admin-cli network-segment show`
InfiniBand partitions	`nico-admin-cli ib-partition show`
NVLink partitions	`nico-admin-cli nvl-partition show`
Compute allocation	`nico-admin-cli compute-allocation show`

Query State History

$ nico-admin-cli -c <api-url> -f json machine show <machine-id>

Use this to inspect state transitions, timestamps, and handler outcomes.

Query Health

Aggregate state:

$ nico-admin-cli managed-host show <host-machine-id>

Per-source health reports:

$ nico-admin-cli machine health-report show <machine-id>

JSON output:

$ nico-admin-cli -f json machine health-report show <machine-id>

Add or Remove Health Overrides

Mark a false positive healthy for allocation:

$ nico-admin-cli machine health-override add <machine-id> \
>   --template mark-healthy \
>   --message "false positive INC-123"

Hold a host out of allocation:

$ nico-admin-cli machine health-override add <machine-id> \
>   --template out-for-repair \
>   --message "INC-123"

Remove an override:

$ nico-admin-cli machine health-override remove <machine-id> <source-name>

Kubernetes Logs

Namespace names vary by site and deployment generation. Confirm the namespace before copying commands.

$ kubectl get ns
$ kubectl -n <nico-namespace> get pods
$ kubectl -n <nico-namespace> logs deploy/nico-api --tail=500 | grep <machine-id>

Common log sources:

Component	What to look for
`nico-api`	State transitions, Redfish errors, Vault failures, health reports, gRPC errors.
`nico-dhcp`	DHCP lease and discovery issues.
`nico-pxe`	PXE and HTTP boot artifact requests.
Site Explorer	BMC endpoint discovery and scrape failures.
DPF operator	DPU provisioning custom resources and operator status.
`nico-dpu-agent`	DPU heartbeat, BGP, HBN, DHCP relay, and applied network config.

Loki and Grafana

Use a debug bundle when possible:

$ GRAFANA_AUTH_TOKEN=<token> \
> nico-admin-cli managed-host debug-bundle <machine-id> \
>   --start-time <time> \
>   --grafana-url https://<grafana-host>

Use logcli directly when a bundle is not enough:

$ logcli --addr=http://localhost:3100 \
>   --org-id=<org-id> \
>   query \
>   --timezone=UTC \
>   --from="<YYYY-MM-DDTHH:MM:SSZ>" \
>   --to="<YYYY-MM-DDTHH:MM:SSZ>" \
>   --limit 0 \
>   --forward \
>   '{k8s_container_name="<container-name>"}'

On-Metal Host and DPU Logs

Location	Use
`/var/log/nico/nico-scout.log`	Host discovery scout during ingestion.
`journalctl -u nico-dpu-agent`	DPU agent heartbeat, network config, BGP, HBN, and service health.
DPU BMC or rshim console	Use when SSH to the DPU fails.

Metrics

Metric names may retain the historical carbide_* prefix even when the service name is now NICo.

Metric	Use
`carbide_machines_per_state`	Count hosts by state.
`carbide_machines_time_in_state_seconds`	Average time in each state.
`carbide_machines_per_state_above_sla`	Hosts past state SLA.
`carbide_hosts_health_status_count`	Healthy vs alerting hosts.
`carbide_hosts_health_overrides_count`	Active overrides.
`carbide_dpus_up_count` / `carbide_dpus_healthy_count`	DPU agent presence and health.
`carbide_endpoint_exploration_*`	BMC discovery health.
`carbide_available_ips_count`	DHCP or IP pool pressure.
`carbide_gpus_usable_count`	GPU capacity for allocation.
`carbide_api_vault_requests_failed_total`	Credential pipeline failures.