nilsandClaude Opus 5.5
9f184362f0
The car sends live data to ABRP itself, and the car and the server go over the same mobile connection: when the car cannot reach ABRP, it cannot reach the server either, so the server's fallback bought nothing. The forwarder, its ABRP_* settings and abrpSentUtc are gone; the server only stores. The app stops sending abrpSentUtc (the server ignores unknown fields, so 2.11.0 keeps working) and its texts no longer promise a server fallback. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QLJfZQZeAKAwSqViTmLzki
73 lines
3.7 KiB
Markdown
73 lines
3.7 KiB
Markdown
# Kubernetes manifests — car.k8s.stinnesbeck.com
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Plain manifests for the car server, InfluxDB 2 and Grafana. They are only files: nothing here
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is applied automatically. Apply them yourself.
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| File | What |
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| `namespace.yaml` | Namespace `mg4` |
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| `influxdb.yaml` | InfluxDB 2.7.12 StatefulSet (10Gi PVC, default storage class), cluster-internal Service, NetworkPolicy admitting only the server and Grafana |
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| `server.yaml` | Go server Deployment (1 replica, non-root, read-only root filesystem) and Service |
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| `grafana.yaml` | Grafana 13.2.3 Deployment (1Gi PVC), Service; datasource and dashboards provisioned |
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| `grafana/` | The provisioned InfluxDB datasource and the MG4 dashboards (Live, Consumption, Charging) |
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| `ingress.yaml` | Traefik `IngressRoute`s for car.k8s.stinnesbeck.com and Grafana, TLS from Traefik's default certificate |
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| `secrets/secrets.example.yaml` | **Template** for the Secrets; placeholders only, not in `kustomization.yaml` |
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| `secrets/secrets.yaml` | Your filled-in copy — **gitignored**, never committed |
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| `kustomization.yaml` | Everything except the Secrets; generates the Grafana ConfigMaps |
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## Before the first apply
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1. **Check `ingress.yaml`:** Grafana's host (placeholder `car-grafana.k8s.stinnesbeck.com`).
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Both routes use the `traefik-internal` class, and both hosts must be
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covered by Traefik's default certificate.
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2. **Create the Secrets.** `cp k8s/secrets/secrets.example.yaml k8s/secrets/secrets.yaml` (gitignored), replace
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every `CHANGE-ME` there (`openssl rand -hex 32`): `influxdb-auth`, `mg4-server` (ingest token,
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approval password for pairing), `grafana-admin` and
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`grafana-influx` (see below). Keep the template itself on placeholders only.
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3. **Registry access.** The `mg4-server` package on git.stinnesbeck.com is public, so no pull
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secret is needed. If you make it private, add an `imagePullSecrets` entry to `server.yaml`.
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## Apply
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```sh
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kubectl apply -f k8s/namespace.yaml
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kubectl apply -f k8s/secrets/secrets.yaml
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kubectl apply -k k8s/
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```
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Use **`-k`**, not `-f k8s/`: plain `-f` applies the files without kustomize, so the Grafana
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ConfigMaps (datasource and dashboards) are never created and Grafana does not start.
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## Grafana's InfluxDB token
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Grafana reads InfluxDB with a token that can only read the `mg4` bucket, from the
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`grafana-influx` Secret. InfluxDB has to create that token, so it is a step of its own:
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1. With InfluxDB running, create the token. The `influx` CLI in the pod is already signed in
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as admin:
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```sh
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kubectl -n mg4 exec influxdb-0 -- sh -c \
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'influx auth create --org mg4 --description grafana-read-only --json \
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--read-bucket "$(influx bucket find --name mg4 --hide-headers | cut -f1)"'
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```
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2. Copy the `"token"` value from the output into `grafana-influx` → `token` in
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`k8s/secrets/secrets.yaml`, apply that file, and restart Grafana:
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`kubectl -n mg4 rollout restart deployment/grafana`.
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Until the Secret exists, Grafana does not start (the container waits for the missing Secret).
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On a fresh install, apply everything once without Grafana working, create the token, then
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apply the Secret.
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## Notes
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- InfluxDB's setup mode runs only on an empty volume. Changing `admin-token` in the Secret later
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does not change the token inside InfluxDB.
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- The server uses the InfluxDB admin token; a token scoped to read/write on the `mg4` bucket can
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replace it later. Grafana has its own read-only token (below).
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- The dashboards are read-only in Grafana's UI. Change the JSON in `grafana/dashboards/`; the
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ConfigMap name changes with its content, which rolls Grafana.
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- The server image is pinned by digest in `server.yaml`. To upgrade, push a new tag and put its
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digest there (`skopeo inspect docker://git.stinnesbeck.com/nils/mg4-server:<tag>`).
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