every hive runs its otel collector, and agents export to it by default

hive-metric/README.md

@@ -20,7 +20,6 @@ The SDK reads standard OTEL environment variables automatically:
 - `OTEL_EXPORTER_OTLP_ENDPOINT` — collector URL (**required**)
 - `OTEL_RESOURCE_ATTRIBUTES` — resource labels (`k=v,...`)
 
-The harness populates both per-agent when
-`services.hyperhive.otel.enable = true`: an agent exports straight to
+The harness populates both in every agent container: an agent exports straight to
 its own hive's collector. See `docs/scheduler/observability.md` for
 the collector setup and the metrics hyperhive exports.

hive-metric/src/main.rs

@@ -7,8 +7,7 @@
 //! - `OTEL_EXPORTER_OTLP_HEADERS` — auth headers (`Key=Value,...`)
 //! - `OTEL_RESOURCE_ATTRIBUTES` — resource labels (`k=v,...`)
 //!
-//! The harness populates all of these per-agent when
-//! `services.hyperhive.otel.enable = true`.
+//! The harness populates all of these in every agent container.
 //!
 //! # Usage
 //! ```text
@@ -25,7 +24,7 @@ use opentelemetry_sdk::metrics::Temporality;
 #[derive(Parser)]
 #[command(
     name = "hive-metric",
-    about = "Push a labeled metric to the OTEL collector (requires services.hyperhive.otel.enable = true)",
+    about = "Push a labeled metric to the hive's OTEL collector",
     // Let a leading-minus value parse as the `value` positional rather than
     // being rejected as an unknown flag — negative gauges are legitimate
     // (e.g. a delta), and it lets the counter-sign check below produce a clear
@@ -90,7 +89,7 @@ fn main() -> Result<()> {
     if std::env::var("OTEL_EXPORTER_OTLP_ENDPOINT").is_err() {
         bail!(
             "OTEL_EXPORTER_OTLP_ENDPOINT not set — \
-             enable OTEL in NixOS config (services.hyperhive.otel.enable = true)"
+             an agent that sets services.hyperhive.agent.otel.enable = false has no collector"
         );
     }