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hive-c0re: reconcile declared agents periodically, with backoff

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atlas 2026-11-14 20:52:31 +01:00 • committed by mara
commit b8c07a5492
1 changed files with 516 additions and 9 deletions
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docs/4-implementation/scheduler/observability.md
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@ -533,14 +533,15 @@ distinguishable from "this hive is gone." Select them with
<!-- vale write-good.Passive = YES -->
| Metric | Unit | Kind | Meaning |
| -------------------------------------- | ---- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `process.uptime` | `s` | gauge | seconds since this hive's `hive-c0re` started exporting; a restart reads as a drop to ~0 |
| `hyperhive.hive.degraded` | `1` | gauge | `1` while the hive reports itself unhealthy — the same verdict `/health/ready` gives and the swarm status view shows |
| `hyperhive.hive.warnings` | `1` | gauge | how many warnings are currently raised, split by a `level` attribute (`warn`, `crit`) |
| `hyperhive.hive.warning` | `1` | gauge | `1` per raised warning, with `kind` and `level` attributes; a cleared warning stops reporting |
| `hyperhive.hive.nix_store.utilization` | `1` | gauge | used fraction (0–1) of the filesystem that holds the nix store; no sample when the probe fails |
| `hyperhive.hive.pressure.stall` | `us` | counter | host-wide `/proc/pressure/{cpu,memory,io}` `total` in microseconds, split by `resource` (`cpu`, `memory`, `io`) and `kind` (`some`, `full`); a rate is the stalled share of time; no sample without PSI |
| Metric | Unit | Kind | Meaning |
| ---------------------------------------- | ----------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `process.uptime` | `s` | gauge | seconds since this hive's `hive-c0re` started exporting; a restart reads as a drop to ~0 |
| `hyperhive.hive.degraded` | `1` | gauge | `1` while the hive reports itself unhealthy — the same verdict `/health/ready` gives and the swarm status view shows |
| `hyperhive.hive.warnings` | `1` | gauge | how many warnings are currently raised, split by a `level` attribute (`warn`, `crit`) |
| `hyperhive.hive.warning` | `1` | gauge | `1` per raised warning, with `kind` and `level` attributes; a cleared warning stops reporting |
| `hyperhive.hive.nix_store.utilization` | `1` | gauge | used fraction (0–1) of the filesystem that holds the nix store; no sample when the probe fails |
| `hyperhive.hive.pressure.stall` | `us` | counter | host-wide `/proc/pressure/{cpu,memory,io}` `total` in microseconds, split by `resource` (`cpu`, `memory`, `io`) and `kind` (`some`, `full`); a rate is the stalled share of time; no sample without PSI |
| `hyperhive.hive.reconcile_tick.restarts` | `{restart}` | counter | restarts the periodic reconcile tick has queued since `hive-c0re` started, for agents declared up and found down; the agent is in the `reconcile tick: restarting agent` log line |
hive-c0re reports both levels of `hyperhive.hive.warnings` every cycle, `0`
included, so a healthy hive is visible as zeros rather than as missing