From 14539de7d09557b5b13d20edf1b766f0bb746d28 Mon Sep 17 00:00:00 2001
From: damocles <damocles@hyperhive.local>
Date: Tue, 23 Jun 2026 21:44:19 +0200
Subject: [PATCH] fix(#1962): pin harness SyslogIdentifier so otel ExecStart
 wrapper doesn't rename the log unit

---
 nix/templates/harness-base.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/nix/templates/harness-base.nix b/nix/templates/harness-base.nix
index c3367bf7..58d2b15f 100644
--- a/nix/templates/harness-base.nix
+++ b/nix/templates/harness-base.nix
@@ -1775,6 +1775,13 @@ in
         // otelEnv;
         serviceConfig = {
           ExecStart = if otel.enable then "${otelExecStart}" else "${pkgs.hyperhive}/bin/${binary} serve";
+          # Pin the journal identity to the binary name. Without this,
+          # systemd derives SyslogIdentifier from the ExecStart basename —
+          # which under OTEL is the wrapper script's store path
+          # (`<hash>-hive-serve-otel`), so every agent's harness logs showed
+          # that opaque name instead of `hive`. Set explicitly so the
+          # identity is stable across the otel / non-otel ExecStart branches.
+          SyslogIdentifier = binary;
           Restart = "on-failure";
           RestartSec = 2;
           # Per-service runtime dir owned by `User=` below; the harness