Fixes#32313
OpenTelemetry Tracing
- Added tracing to async task collectors: FlushHostsLastSeen,
collectHostsLastSeen, collectLabelQueryExecutions,
collectPolicyQueryExecutions, collectScheduledQueryStats
- Updated HTTP middleware to use OTEL semantic convention for span names
({method} {route})
- Added OTELEnabled() helper to FleetConfig
Optimizations
- Reduced OTEL batch size from 512 to 256 spans to prevent gRPC message
size errors
- Enabled gzip compression for trace exports
NOTE: I tried to improve OTEL instrumentation for cron jobs, but it got
too complicated due to goroutines in `schedule.go` so that effort should
be separate. We do have SQL instrumentation for cron jobs, but we are
missing root spans for cron jobs as a whole.
# Checklist for submitter
If some of the following don't apply, delete the relevant line.
- [x] Changes file added for user-visible changes in `changes/`,
`orbit/changes/` or `ee/fleetd-chrome/changes`.
## Testing
- [x] QA'd all new/changed functionality manually
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Expanded OpenTelemetry tracing for async tasks (host last seen, label
membership, policy membership, scheduled query stats) to provide richer
observability.
* More descriptive HTTP span names using “METHOD /route” for clearer
trace analysis.
* **Bug Fixes**
* Improved OTLP gRPC exporter reliability by enabling gzip compression
and reducing export batch size, mitigating intermittent gRPC errors.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
`go-kit/kit/log` was deprecated and generating warnings
# Checklist for submitter
If some of the following don't apply, delete the relevant line.
<!-- Note that API documentation changes are now addressed by the
product design team. -->
- [x] Manual QA for all new/changed functionality
#16480
# Checklist for submitter
- [x] Changes file added for user-visible changes in `changes/` or
`orbit/changes/`.
See [Changes
files](https://fleetdm.com/docs/contributing/committing-changes#changes-files)
for more information.
- [x] Added/updated tests
- [x] Manual QA for all new/changed functionality
* Add sentry
* Fix gosum
* More gosum fixes
* Add missing def for config
* Enrich sentry scope a bit
* Add changes file
* Add goroutine safe scope to errors
* Encapsulate sentry logic
* Add documentation for new flag
* Add sentry capturing to crons and other background tasks
* Only send to sentry when enabled
* Serialize hosts writes per instance
* Write hosts asynchronously
* Dont make the save in a goroutine
* Revert "Dont make the save in a goroutine"
This reverts commit 4a890c5271.
* Make all savehosts async
* Address review comments and make this approach configurable
* Address review comments
* Disable bulk seen time marking for a test
* Move host seen times to a new table
* Remove unused
* Add seen_time to list hosts
* Add some jitter to seen time flushing
* Remove unused
* Add timeout to deferred save host
* Add tests for serialSaveHost
* Update hosts in labels and policy executions in a serial way
* Address review comments and remove fk constraints in host software
* Make errCh buffered
* Add changes file
* Readd key
