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add swarm-metrics, an agent CLI for the metrics store

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swarm-metrics reads the swarm's VictoriaMetrics from inside an agent
container: query, query-range, series, labels and label-values, each one
GET against the store's Prometheus read API through the gateway, printing
the store's JSON. It authenticates the way swarm-logs does, with the
agent's own queue secret read from bao under the agent's leaf, sent as
a swarm-agent bearer.

On the metrics store's host the read API's auth map gains an agent arm
ahead of the Grafana one. It routes to swarm-metrics-agent-auth, a
swarm-logs-auth instance logged in under the existing swarm-metrics-auth
leaf, whose bao grant now includes swarm/agents/+/queue read. The check is
rate-limited per address like the log store's
(deploy.victoriametrics.agentAuth{Rate,Burst,VerdictTtl}).

nix/agent-modules/metrics.nix installs the wrapped binary when the hive
forwards HIVE_AGENT_METRICS_URL (from swarm.victoriametrics.domain) and a
store address, the same gate as swarm-logs. Adds the base:swarm-metrics
skill and the CLI reference with its freshness check.

Fixes #5395
This commit is contained in:
atlas 2026-10-17 00:55:46 +02:00 • committed by mara
commit e92f118bda
30 changed files with 1417 additions and 88 deletions
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Cargo.lock generated
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@ -4944,6 +4944,19 @@ dependencies = [
"tracing-subscriber",
]
[[package]]
name = "swarm-metrics"
version = "0.1.0"
dependencies = [
"anyhow",
"clap",
"clap-markdown",
"reqwest",
"swarm-queue-client",
"swarm-secret-client",
"tokio",
]
[[package]]
name = "swarm-metrics-auth"
version = "0.1.0"