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swarm-otel: ship the whole host journal, drop user sessions after it

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The swarm collector's journald receiver read only the units listed in
`services.hyperhive.swarm.otel.journaldUnits`. A unit nobody listed
never reached the store, and a misspelt entry shipped nothing without
an error. The list existed to keep an operator's desktop session out of
a store every swarm operator can read, but the receiver can only match
positively, so the only way to express "not user sessions" was to name
every service instead.

The receiver now reads the whole host journal, and a new
`filter/exclude-user-sessions` processor in the `logs/<swarm>` pipeline
drops records whose `_SYSTEMD_SLICE` is `user-<uid>.slice` (session
scopes and `user@<uid>.service`). The per-hive `logs/<hive>` pipelines
carry agent-container journals only and get no filter.

`journaldUnits` is removed with `mkRemovedOptionModule`, together with
its non-empty assertion and the entry each host module added. The four
module-eval membership checks go with it, replaced by one structural
case in swarm-otel-core.

Closes #3646
This commit is contained in:
atlas 2026-09-30 22:51:52 +02:00 • committed by mara
commit 6b1e825c0a
25 changed files with 72 additions and 324 deletions
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8
nix/module-eval/bao-matrix-reader.nix
View file

@ -160,14 +160,6 @@ let
&& lib.hasInfix "${dir}/secret" s
&& lib.hasInfix "${dir}/client_id" s;
}
{
# A reader off the store's host is a reader whose journal is the only
# record of why a hive's agents never connected, so the collector has to
# be told the unit exists. Nothing else can say it: the store's module
# does not know who holds a certificate.
name = "the queue credential reader's journal reaches the collector";
ok = builtins.elem "swarm-bao-queue-agent" baoRemoteReader.services.hyperhive.swarm.otel.journaldUnits;
}
{
# No agent container may render before this unit has had its attempts,
# and the edge that guarantees it must delay hive-c0re rather than sink