blumeops/containers/transmission-exporter/Dockerfile

# Transmission Prometheus exporter - collect-on-scrape, no polling loop
# uv run --script handles dependency resolution at runtime

ARG CONTAINER_APP_VERSION=1.0.1

FROM python:3.13-alpine3.23

LABEL org.opencontainers.image.title="Transmission Exporter"
LABEL org.opencontainers.image.description="Prometheus exporter for Transmission BitTorrent client"

COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv

ENV PYTHONUNBUFFERED=1
ENV UV_CACHE_DIR=/tmp/uv-cache

WORKDIR /app
COPY exporter.py .

EXPOSE 19091
USER 65534:65534
CMD ["uv", "run", "--script", "/app/exporter.py"]
Replace transmission-exporter with homegrown Python exporter (#283) ## Summary - Replace unmaintained `metalmatze/transmission-exporter:master` sidecar with a homegrown Python exporter - Uses `prometheus_client` + `transmission-rpc` with collect-on-scrape pattern (fresh metrics per scrape, no stale labels) - Same metric names so existing Grafana Transmission dashboard works unchanged - Container built with `uv` for dependency management, follows `grafana-sidecar` Dockerfile pattern ## Changes - New: `containers/transmission-exporter/exporter.py` — single-file exporter (~130 lines) - New: `containers/transmission-exporter/Dockerfile` — multi-stage Alpine build with uv - Modified: `argocd/manifests/torrent/deployment.yaml` — swap sidecar image reference - Modified: `argocd/manifests/torrent/kustomization.yaml` — add image tag entry - Modified: `service-versions.yaml` — add transmission-exporter entry ## Deployment and Testing - [ ] Build container: `mise run container-build-and-release transmission-exporter` - [ ] Update kustomization.yaml newTag with build SHA - [ ] Branch deploy: `argocd app set torrent --revision feature/transmission-exporter-python && argocd app sync torrent` - [ ] Verify metrics: `kubectl -n torrent --context=minikube-indri port-forward svc/transmission 19091:19091` then `curl localhost:19091/metrics \| grep transmission_` - [ ] Verify Grafana Transmission dashboard panels populate - [ ] After merge: `argocd app set torrent --revision main && argocd app sync torrent` Reviewed-on: https://forge.eblu.me/eblume/blumeops/pulls/283 2026-03-04 21:55:00 -08:00			`# Transmission Prometheus exporter - collect-on-scrape, no polling loop`
			`# uv run --script handles dependency resolution at runtime`

Bump transmission-exporter to v1.0.1 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> 2026-03-05 08:04:02 -08:00			`ARG CONTAINER_APP_VERSION=1.0.1`
Replace transmission-exporter with homegrown Python exporter (#283) ## Summary - Replace unmaintained `metalmatze/transmission-exporter:master` sidecar with a homegrown Python exporter - Uses `prometheus_client` + `transmission-rpc` with collect-on-scrape pattern (fresh metrics per scrape, no stale labels) - Same metric names so existing Grafana Transmission dashboard works unchanged - Container built with `uv` for dependency management, follows `grafana-sidecar` Dockerfile pattern ## Changes - New: `containers/transmission-exporter/exporter.py` — single-file exporter (~130 lines) - New: `containers/transmission-exporter/Dockerfile` — multi-stage Alpine build with uv - Modified: `argocd/manifests/torrent/deployment.yaml` — swap sidecar image reference - Modified: `argocd/manifests/torrent/kustomization.yaml` — add image tag entry - Modified: `service-versions.yaml` — add transmission-exporter entry ## Deployment and Testing - [ ] Build container: `mise run container-build-and-release transmission-exporter` - [ ] Update kustomization.yaml newTag with build SHA - [ ] Branch deploy: `argocd app set torrent --revision feature/transmission-exporter-python && argocd app sync torrent` - [ ] Verify metrics: `kubectl -n torrent --context=minikube-indri port-forward svc/transmission 19091:19091` then `curl localhost:19091/metrics \| grep transmission_` - [ ] Verify Grafana Transmission dashboard panels populate - [ ] After merge: `argocd app set torrent --revision main && argocd app sync torrent` Reviewed-on: https://forge.eblu.me/eblume/blumeops/pulls/283 2026-03-04 21:55:00 -08:00
			`FROM python:3.13-alpine3.23`

			`LABEL org.opencontainers.image.title="Transmission Exporter"`
			`LABEL org.opencontainers.image.description="Prometheus exporter for Transmission BitTorrent client"`

			`COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv`

			`ENV PYTHONUNBUFFERED=1`
			`ENV UV_CACHE_DIR=/tmp/uv-cache`

			`WORKDIR /app`
			`COPY exporter.py .`

			`EXPOSE 19091`
			`USER 65534:65534`
			`CMD ["uv", "run", "--script", "/app/exporter.py"]`