#fluentbit

With KubeCon Europe happening this week, it felt like a good moment to break cover on this pet project. If you are working with Fluent Bit at any scale, one question keeps coming up: how do we consistently control and observe all those edge agents, especially outside a Kubernetes-only world? This is exactly the problem the OpAMP specification is trying to solve. At its core, OpAMP defines a…

Many of the most potent features being added to Fluent Bit are only available in the newer YAML format. At the same time Fluent Bit is celebrating its 10th anniversary, so we can be sure that are some established deployments that are being maintained with the classic format. The transition between the two Fluebnt Bit formats can be a bit fiddly. We built a tool as described in my Fluent Bit…

Fluent Bit version 4’s first major release dropped a couple of weeks ago (September 24, 2025). The release’s feature list isn’t as large as 4.0.4 (see my blog here). It would therefore be easy to interpret the change as less profound. But that isn’t the case. There are some new features, which we’ll come to shortly, but there are some significant improvements under the hood. Under the…

While the typical norm is for applications to write their logs to file or to stdout (console), this isn’t the most efficient way to handle logs (particularly given I/O performance for the storage devices). Many logging frameworks have addressed this by providing more direct outputs to commonly used services such as ElasticSearch and OpenSearch. This is fine, but the only downside is that there is…

Mastering FluentD configuration syntax

Getting to grips with FluentD configuration which describes how to handle logging event(s) it has to process can be a little odd (at-least in my opinion) until you appreciate a couple of foundation points, at which point things start to click, and then you’ll find it pretty easy to understand.

It would be hugely helpful, if the online documentation provided some of the points I’ll highlight…