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monitoring: drop README per convention

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Brad Stein 2025-12-13 15:25:21 -03:00
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services/monitoring/README.md
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# services/monitoring
## Grafana admin secret
The Grafana Helm release expects a pre-existing secret named `grafana-admin`
in the `monitoring` namespace. Create or rotate it with:
```bash
kubectl create secret generic grafana-admin \
--namespace monitoring \
--from-literal=admin-user=admin \
--from-literal=admin-password='REPLACE_ME'
```
Update the password whenever you rotate credentials.
## DCGM exporter image
The NVIDIA GPU metrics DaemonSet expects `registry.bstein.dev/monitoring/dcgm-exporter:4.4.2-4.7.0-ubuntu22.04`, mirrored from `docker.io/nvidia/dcgm-exporter:4.4.2-4.7.0-ubuntu22.04`. Refresh it in Zot when bumping versions:
```bash
skopeo copy \
--all \
docker://docker.io/nvidia/dcgm-exporter:4.4.2-4.7.0-ubuntu22.04 \
docker://registry.bstein.dev/monitoring/dcgm-exporter:4.4.2-4.7.0-ubuntu22.04
```
When finished mirroring from the control-plane, you can remove temporary tooling with `sudo apt-get purge -y skopeo && sudo apt-get autoremove -y` and clear `~/.config/containers/auth.json`.