Cloudprober v0.14.3 Release Notes

New Features

• In-memory logging with web UI 🎉 — Now you can see logs in Cloudprober Web UI itself (go to /logs). Added in-memory log storage with a web UI, plus log retrieval via the GetProbeStatus gRPC (#1285, #1286)
• RunOnce support across probe types — Added the ability to run probes once (on-demand) across multiple probe types, factored out into shared sched code to avoid duplication (#1256, #1258, #1259, #1260, #1257, #1261, #1262)
• Probe status gRPC — Added GetProbeStatus gRPC for querying ongoing probe health (#1229)
• HTTP negative test support — Added negative test support to the HTTP probe (#1254)
• Custom Targets update interval — Added a custom interval option for targets update, courtesy of new contributor @arshbhatti8 (#1255)
• BigQuery wide_rows mode — Added a wide_rows mode for one-row-per-EventMetrics output in the BigQuery surfacer, from new contributor @PovilasV1 (#1283)
• Deeper config validation — Extended ConfigTest to validate probe config fields more thoroughly (#1275)
• External probe raw stderr logs — Added an option to send raw logs to stderr from external probes, from new contributor @himanhsugusain (#1292)

Bug Fixes & Reliability

• Goroutine and connection leak fixes — Replaced time.Tick() with time.NewTicker() to prevent goroutine leaks, and added missing resp.Body.Close() calls to prevent connection leaks (#1279, #1280)
• Probestatus cache eviction — Fixed unbounded growth by evicting stale entries from the probestatus surfacer's pageCache (#1282)
• Test stability — Fixed a sporadic panic in file surfacer tests, improved Windows test compatibility for command probes, and reduced CI flakiness in command tests (#1288, #1263, #1294)
• Better error messaging — Improved error messages for ping listen failures and IPv6 probes, with a new troubleshooting entry for the latter (#1252, #1266)

Security & Dependencies

• Dependabot fixes — Addressed multiple open dependabot security vulnerabilities, including OpenTelemetry-specific fixes (#1248, #1287, #1289)
• Dependency bumps — Upgraded gRPC (1.67.1 → 1.79.3), pgx/v5 (to 5.9.2), npm packages, and Go (to 1.25.9) (#1270, #1293, #1295, #1281, #1290)

Docs

• New docs additions — Added an FAQ section, common probe options documentation, a ping permissions caution, and a URL shortener system at cloudprober.org/goto/<keyword> (with the helper script later moved to tools/) (#1244, #1271, #1246, #1249, #1251)

New Contributors

Welcome to @arshbhatti8, @PovilasV1, and @himanhsugusain for their first contributions!

Full Changelog: v0.14.2...v0.14.3