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https://github.com/luxfi/monitoring.git
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zeekayandHanzo Dev
936a59512c
The validator-health exporter and the rpc-tip-gate were both stdlib-only
Python scripts living in ConfigMaps on a stock python image. That choice
bought one thing — no build step — and it cost the backend standard: the
serving side of this stack is Go, and these two are serving processes.
internal/luxd — what one node says it believes (tip, finalized, peers,
bootstrapped, health-with-check-names). /v1 only.
internal/kube — the four apiserver calls fleet health makes. Not
client-go: a scheme, a codec and an informer machinery
to unmarshal four fields is not a dependency, it is a
liability.
internal/fleet — what the numbers MEAN, separated from the process that
serves them, so a metric's meaning can be tested
without a cluster.
Proven, not asserted. Both implementations were pointed at one fake
cluster and diffed:
exporter : 234 lines, 22 metric families — byte-for-byte identical.
tip-gate : same 5 decisions, same 3 merge-patches, byte-for-byte.
The differential earned its keep: the gate had been ported to
eth_getBlockByNumber when the deployed one calls eth_blockNumber. Same
answer today, a different call tomorrow. Fixed to match.
Two deliberate improvements over the Python, neither a scrape-visible
change: exposition series are sorted (Python's thread-completion order
made two scrapes of a steady fleet textually different), and the gate
refuses to start on a missing setting rather than defaulting quietly.
Co-authored-by: Hanzo Dev <[email protected]>
18 lines
758 B
Docker
18 lines
758 B
Docker
# One image, two fleet daemons. They share the luxd client and the apiserver
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# client, so they share a build; they are separate binaries because observing
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# the fleet and actuating on it are separate jobs that fail separately.
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FROM golang:1.24-alpine AS build
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WORKDIR /src
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COPY go.mod ./
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COPY internal ./internal
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COPY cmd ./cmd
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RUN CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /out/validator-exporter ./cmd/validator-exporter \
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&& CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o /out/rpc-tip-gate ./cmd/rpc-tip-gate
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FROM gcr.io/distroless/static-debian12:nonroot
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COPY --from=build /out/validator-exporter /validator-exporter
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COPY --from=build /out/rpc-tip-gate /rpc-tip-gate
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USER 65532:65532
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EXPOSE 9101
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ENTRYPOINT ["/validator-exporter"]
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