ZoneMinder
ZoneMinder 1.38.5 fixes 19 vulnerabilities, including authenticated remote code execution
Comparison · Infra & APIs
Prometheus Alertmanager vs Fluentd
A side-by-side editorial comparison of Prometheus Alertmanager and Fluentd — release velocity, themes, recent moves, and the top alternatives to consider.
Prometheus Alertmanager vs Fluentd: at a glance
What is Prometheus Alertmanager?
Alertmanager 0.34.2 turns off CORS by default, breaking cross-origin API calls.
Alertmanager handles deduplication, grouping, silencing and routing of Prometheus alerts. 0.34.2 (October 29) stops sending CORS headers by default, so cross-origin calls to api/v2 now fail unless --web.cors.origin is set, and rebuilds with Go 1.26.10 to distrust the compromised eMudhra intermediates. 0.34.1 fixed inhibitions that could un-mute alerts, and 0.34.0 split auth and rate-limit failures out of the clientError metric reason.
What is Fluentd?
Fluentd 1.20 drops its yajl dependency to keep building on Ruby 4.1
Fluentd shipped 1.20.0 and 1.20.1 on the same day in late October. 1.20.0 replaces yajl with Ruby's built-in JSON, adds opt-in threaded parsing and directory watching to in_tail, a command timeout for in_exec, TCP keepalive for out_forward, a umask option and a cap on evacuated buffer chunks. 1.20.1 removed yajl-ruby from runtime dependencies because it cannot build on Ruby 4.1, so plugins that require it must now declare it themselves. 1.19.4 in September fixed buffer accounting leaks, a path traversal check and syslog limits.
Prometheus Alertmanager vs Fluentd: editorial side-by-side
Prometheus Alertmanager
2.5INFRA · APIS
Alertmanager 0.34.2 turns off CORS by default, breaking cross-origin API calls.
◆ Current state
Alertmanager handles deduplication, grouping, silencing and routing of Prometheus alerts. 0.34.2 (October 29) stops sending CORS headers by default, so cross-origin calls to api/v2 now fail unless --web.cors.origin is set, and rebuilds with Go 1.26.10 to distrust the compromised eMudhra intermediates. 0.34.1 fixed inhibitions that could un-mute alerts, and 0.34.0 split auth and rate-limit failures out of the clientError metric reason.
◆ Where it's heading
The 0.3x line keeps shipping breaking changes outside major versions: metric reason splits in 0.34.0, per-group markers in 0.33.0 and now a CORS default in a patch. Operators need to read every release note, not just minors.
◆ Prediction
Expect 0.35.0 to carry further breaking changes in the vein of 0.33 and 0.34, though the entries do not say what it will contain.
Fluentd
5.0INFRA · APIS
Fluentd 1.20 drops its yajl dependency to keep building on Ruby 4.1
◆ Current state
Fluentd shipped 1.20.0 and 1.20.1 on the same day in late October. 1.20.0 replaces yajl with Ruby's built-in JSON, adds opt-in threaded parsing and directory watching to in_tail, a command timeout for in_exec, TCP keepalive for out_forward, a umask option and a cap on evacuated buffer chunks. 1.20.1 removed yajl-ruby from runtime dependencies because it cannot build on Ruby 4.1, so plugins that require it must now declare it themselves. 1.19.4 in September fixed buffer accounting leaks, a path traversal check and syslog limits.
◆ Where it's heading
The project is clearing old native dependencies ahead of new Ruby versions while making in_tail cheaper at high file counts. The hardening theme from 1.19.3 and 1.19.4 continues in the buffer and input paths.
◆ Prediction
Expect 1.20.x patches driven by plugins that break without yajl-ruby, since 1.20.1 pushes that dependency onto plugin authors.
Alternatives to Prometheus Alertmanager and Fluentd
Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Prometheus Alertmanager or Fluentd.
CRI-O
CRI-O ships patch releases across three branches with empty change notes
Certbot
Certbot keeps tidying correctness bugs around renewals and hooks
Routinator
Routinator 0.16 will validate ASPA and BGPsec, and run strict, by default
Buildkite
Buildkite drops long-lived GitHub credentials from self-hosted agents
AIReiter
AIReiter adds ByteDance's Seedream 5.0 Flash for fast, low-cost image generation and editing
See all Prometheus Alertmanager alternatives → · See all Fluentd alternatives →
Recent activity from Prometheus Alertmanager and Fluentd
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 4d agoPrometheus Alertmanager0.34.2: CORS off by default, eMudhra CAs distrusted
- 7d agoFluentdFluentd 1.20.1 drops yajl-ruby so it builds on Ruby 4.1
- 7d agoFluentdFluentd 1.20: threaded in_tail parsing, directory watching, umask
- 1mo agoFluentdFluentd 1.19.4 fixes buffer leaks and a path traversal check
- 1mo agoPrometheus Alertmanager0.34.1: inhibition fixes stop alerts being wrongly un-muted
- 2mo agoPrometheus AlertmanagerNotification failure reasons split; templatable route labels added
- 4mo agoPrometheus AlertmanagerSilence snapshot legacy matchers field restored
- 4mo agoFluentdPayload size limits, host validation and tag path boundaries
- 4mo agoPrometheus AlertmanagerPer-group alert markers replace the global one; event recorder lands ⚡
- 4mo agoPrometheus AlertmanagerDispatcher goroutine leak on alertgroup swap fixed
- 8mo agoFluentdConnection timeouts, socket leaks and Ruby 4.0 dependencies
- 10mo agoFluentdBackport fixes out_forward stalling under TLS
Frequently asked questions
What is the difference between Prometheus Alertmanager and Fluentd?
They serve adjacent needs but don't currently overlap on shipped themes. Fluentd is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Prometheus Alertmanager better than Fluentd?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Fluentd is currently shipping more aggressively (velocity 5.0 vs 2.5), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to Prometheus Alertmanager?
Top Prometheus Alertmanager alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Prometheus Alertmanager alternatives" section above for the current picks, or visit /alternatives/alertmanager for the full list with editorial commentary on each.
What are the best alternatives to Fluentd?
Top Fluentd alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Fluentd alternatives" section above for the current picks, or visit /alternatives/fluentd for the full list with editorial commentary on each.