Hey Fluent Community! fluent bit Reminder for next week! [Webinar] Fluent Bit v4! April 24th don’t miss it! [Save your seat]

fluent bit Don't miss, to join us tomorrow! Our Fluent Bit bi-weekly Meetup at 9:00 a.m. PT. The registration page is here. Remember to add agenda topics here.

Fluent Bit v4 Webinar w/@eduardo will start in 5 mins! Last chance! [Save your seat]

Hi everyone, is the community meeting for today https://www.meetup.com/fluent-community-meeting/events/307108805/?eventOrigin=group_upcoming_events cancelled?

It is happening now! Join us!

Q - is it really

reserve_data

not

preserve_data

?

(I mean, yes it obviously is in the code, I'm just wondering why the name was chosen)

📣 Fluent Communityfluent bit We want to hear from you; your feedback helps us understand what’s working and needs improvement. ⏳ The survey takes just 2 minutes ✅ It’s quick, anonymous, and your insights will directly influence what we do next. 📄 Link to survey here

Anyone at AWS Summit London today? I'll be popping in later on today in case anyone wants to catch up 🙂

Hi, I'm new to Slack and the Fluent Community! Hopping this is the right channel for my question. According to Fluent Bit documentation and the statement "Fluent Bit is now considered the next-generation solution," https://docs.fluentbit.io/manual/about/fluentd-and-fluent-bit what do you make of that statement? Wondering, for us, which use case applies for Fluentd and or Fluent Bit? I understand performance, dependencies, and the number of plugins...But is it safe to understand that Fluent Bit should be used from the get-go? Thanks for your input! Have a good week! Alex

Hi, I'm not sure if this is the right place to ask, but I'm just curious, what kind of debugger are you using for Fluent Bit? I'm currently using GDB with VS Code, but it's not very helpful when it comes to debugging events. Do you have any suggestions?

@Adriana Naula do we have the community meeting today? If yes, can you share its link and agenda doc?

fluent bit Our Fluent Bit bi-weekly Meetup is in ~45 mins. The registration page is here. Remember to add agenda topics here.

Hi the below is the log and the fluentbit out put seesion clickhouse is also there but fluentbit want to redirect the logs based on the component if component is soe it should insert to soe table and if it is jigsaw it should insert to jigsaw table {"eventTime":"Tue Apr 22 100054 IST 2025","eventType":"appLog","sourceHost":"txn-0","component":"jigsaw","logger":"ta.legacyLTA.ControlProfileBO","tenantId":"t=mfsPrimaryTenant","flowId":"c37792ba-5401-4fdd-bb78-5dfb5d8824f2","threadName":"http-nio-9090-exec-1","level":"ERROR","message":"time taken for lta.update :: getControlProfile :: validateThreshold :: validateThresholdsForServiceAndBearer 98 ","stacktrace":""} {"eventTime":"Tue Apr 22 100054 IST 2025","eventType":"appLog","sourceHost":"txn-0","component":"soe","logger":"com.comviva.mfs.lta.legacyLTA.ControlProfileBO","tenantId":"t=mfsPrimaryTenant","flowId":"c37792ba-5401-4fdd-bb78-5dfb5d8824f2","threadName":"http-nio-9090-exec-1","level":"ERROR","message":"time taken for lta.update :: getControlProfile :: validateThreshold :: validateThresholdsForServiceAndBearer 98 ","stacktrace":""} outputs: | [OUTPUT] Name http Match kube.* Host clickhouse-headless.ce3-oam.svc.cluster.local Port 8123 URI /?query=INSERT%20INTO%20applog%20FORMAT%20JSONEachRow Format json Header Content-Type application/json HTTP_User default HTTP_Passwd default Retry_Limit 1 Workers 10 Json_Date_Key "@timestamp" (edited)

Hey guys

Hey Fluent Bit Community! fluent bit We’re reshaping our Fluent Bit bi-weekly community call into something more intentional: Fluent Bit Office Hours. 🎯 What’s new? These Office Hours will go beyond just PR triage. Expect practical demos, insider tips, and Q&A with maintainers. This week’s Office Hours #79 on May 29 features @eduardo session: 🧭 Fluent Bit 101 — What You Might Not Know (Even If You’re Using It) Whether you’re just getting started or have been running Fluent Bit in production for years, this intro will give you context and clarity. Join us live on Thursday! Registration page here, agenda topics welcome here.

Hi Fluent Bit community! fluent bit Welcome to another Fluent Bit Office Hours — a space focused on sharing knowledge, answering questions, and engaging more meaningfully with both users and contributors. 🎯 What’s Office Hours? These Office Hours will go beyond just PR triage. Expect practical demos, insider tips, and Q&A with maintainers like @eduardo and @lecaros. 🧭 Fluent Bit 101 — Fluent Bit and Scripting: • This series continues with a look at the exciting things you can do with Fluent Bit using scripting! Join us live on Friday, 13 June 2025! Registration page here, agenda topics welcome here.

<!here> hey folks, in 5 minutes we will start our office hour, we will demo Lua scripting and give a preview of the new metadata support, details to join are here: https://docs.google.com/document/d/1vJvsn8E0SanLO1R0X3RC1qTw0XQK_7q75sZ8IbWAu-g/edit?tab=t.0#heading=h.be1p5tatfwwo zoom link: https://chronosphere-io.zoom.us/j/87317609300?pwd=kLczOb4hY9vvqGaXqGTXzQc3ZmpkD9.1

Hi, everyone. Is there a channel where I can ask one question about fluent bit? Was fighting for a day with no luck. Thank you

Sure, this one or #C0CTQGHKJ

Thank you, @Pat. Here’s a brief overview of my issue: I am using the TCP input plugin, which has a

Format

property that accepts two possible values:

json

and

none

. My log format looks like this:

May 29 04:27:24 BunnyCDN 2957141[p1] {
  "ServerId": 749,
  "IsValid": true,
  ...
}

So, the message is neither a proper JSON object by itself nor just a plain string. Given this, what is my option to resolve it? Thank you in advance.

Hey Fluent Bit community! fluent bit Coming up next month, 17 July 2025 at 08:00 PST | 10:00 CST | 17:00 CEST is a webinar you won’t want to miss, with our very own maintainer and architect Anurag Gupta and Margaret Dawson talking about: Fluent Bit vs Otel, Friend or Foe? Fluent Bit and the OpenTelemetry Collector are both key projects within the CNCF ecosystem. They are often seen as competing solutions for observability and telemetry data collection. But in reality, they’re complementary tools that, when used together, unlock powerful, vendor-neutral observability pipelines. In this session, we’ll explore how these two projects interoperate, where they shine individually, and how to combine them effectively based on your architecture and use cases. We’ll cover: What are these technologies: Collectors, agents, or other? Compatibility and integration points between Fluent Bit and OpenTelemetry Collector Guidance on when to use one, the other, or both Common architectural patterns for using both projects Examples leveraging both projects Open source observability isn’t about picking a winner - it’s about making the right consideration for your specific needs. Join in by registering online today!

FYI to Chronosphere - I'm unsure of a better spot to report this. I'm unable to register for one of the

Cheers to O11Y

events because the ZeroBounce API Key is out of credits.

Hi everyone, I hope this is the right place to ask this question (I'm hesitant opening up an issue in GitHub as I'm not sure if this is a bug or not): Is Fluent Bit 4, configured to use the OpenTelemetry input with the latency tail sampling processor, supposed to work on traces that span multiple apps (e.g., app 1 starts the trace, creates a few spans, propagates context to app 2, that in turn extends the trace with a few extra spans and then ends the trace)? I have this minimal Fluent Bit config:

service:
  log_level: debug
  http_server: "on"
  http_listen: "0.0.0.0"
  http_port: 2020
  hot_reload: "on"
pipeline:
  inputs:
    - name: opentelemetry
      port: 4318
      processors:
        traces:
          - name: sampling
            type: tail
            sampling_settings:
              decision_wait: 15s
            conditions:
                - type: latency
                  threshold_ms_high: 20
                  threshold_ms_high: 500
  outputs:
    - name: stdout
      match: '*'

I am occasionally triggering a slow-down of 1s in app 1 to test this out. The spans from app 1 are successfully showing up in the Fluent Bit logs, but the spans from app 2 are completely missing. Is this to be expected? When I remove the processor, both apps' spans show up (and they are confirmed to chain together nicely in terms of parent span IDs and trace IDs to form a single trace). Thank you! :)

Hi there, wanted to share the new Fluent Bit Office Hours playlist with recordings of bi-weekly interactive sessions were you learn something new with hands-on coding, check it out: https://www.youtube.com/playlist?list=PLND_L9CRId3DJLNjQ9Y-N4M3h1pABeYNI

Hi Fluent Bit community fluent bit*,* Join the next Fluent Bit Office Hours #82 by signing up here: https://www.meetup.com/fluent-community-meeting/events/308806234 🎯 What’s new? • A bi-weekly space to connect with maintainers and the community • Format focused on: • ✨ Knowledge Sharing (demos, best practices, internals) • 💬 Open Q&A • 🚀 Contributor guidance (not just triage) • Still open for PR follow-ups… but now with balance 🧭 Fluent Bit 101 — Exploring first pipelines: • This week we explore our first telemetry pipelines using Fluent Bit • A first one with input and output phases and routing to a single destination • A second one refines the first pipeline to include output to several destinations based on routing rules • Finally, a third one that configures the filtering phase to remove unused data from our incoming events. • Leave you with a free online workshop to explore it all at your own pace!

Hi Fluent Bit community, fluent bit In just two more days Fluent Bit maintainer and architect @Anurag Gupta and Margaret Dawson will face off on whether Fluent Bit and OpenTelemetry are friends or foes! Join them for answers to this fascinating storyline this Thursday, July 17. Register today at: https://go.chronosphere.io/fluent-bit-vs-otel-friend-or-foe.html

Hi Fluent Bit community fluent bit*,* Join the next Fluent Bit Office Hours #83 by signing up here. 🎯 What’s new? • A bi-weekly space to connect with maintainers and the community • Format focused on: • ✨ Knowledge Sharing (demos, best practices, internals) • 💬 Open Q&A • 🚀 Contributor guidance (not just triage) • Still open for PR follow-ups… but now with balance 🧭 Fluent Bit 101 — Multiline Parsers • This week core maintainer Jose Lecaros takes you through the multiline parsers, something we often get questions about in the community channels. Whether you’re just getting started or have been running Fluent Bit in production for years, this intro will give you context and clarity.