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feat(swarm): ship host_uuid + swarmctl-port in agent enroll bundle

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The rendered /etc/decnet/decnet.ini now carries host-uuid and
swarmctl-port in [agent], which config_ini seeds into DECNET_HOST_UUID
and DECNET_SWARMCTL_PORT. Gives the worker a stable self-identity for
the heartbeat loop — the INI never has to be rewritten because cert
pinning is the real gate (a rotated UUID with a matching CA-signed
cert would still be blocked by SHA-256 fingerprint mismatch against
the stored SwarmHost row).

Also adds DECNET_MASTER_HOST so the agent can find the swarmctl URL
via the INI's existing master-host key.
This commit is contained in:
anti
2026-04-19 21:44:23 -04:00
parent 148e51011c
commit e411063075
2 changed files with 22 additions and 3 deletions
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7
decnet/env.py
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@@ -89,6 +89,13 @@ DECNET_INGEST_LOG_FILE: str | None = os.environ.get("DECNET_INGEST_LOG_FILE", "/
DECNET_SWARM_SYSLOG_PORT: int = _port("DECNET_SWARM_SYSLOG_PORT", 6514)
DECNET_SWARM_MASTER_HOST: str | None = os.environ.get("DECNET_SWARM_MASTER_HOST")
# Worker-side identity + swarmctl locator, seeded by the enroll bundle's
# /etc/decnet/decnet.ini ([agent] host-uuid / master-host / swarmctl-port).
# The agent heartbeat loop uses these to self-identify to the master.
DECNET_HOST_UUID: str | None = os.environ.get("DECNET_HOST_UUID")
DECNET_MASTER_HOST: str | None = os.environ.get("DECNET_MASTER_HOST")
DECNET_SWARMCTL_PORT: int = _port("DECNET_SWARMCTL_PORT", 8770)
# Ingester batching: how many log rows to accumulate per commit, and the
# max wait (ms) before flushing a partial batch. Larger batches reduce
# SQLite write-lock contention; the timeout keeps latency bounded during