Re-Redefining Observability

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This post is a response/companion to Hazel Weakly's excellent 'Redefining Observability'. You should probably read it first, and perhaps Fred Hebert's commentary on it, 'A Commentary on Defining Observability'. I don't necessarily plan on re-treading a lot of the ground that both of them do, and instead, want to focus on breaking down some of the definitions and missing pieces that both present.

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What Do We Mean When We Talk About OpenTelemetry?

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I'm motivated to write this post as a result of several discussions I've had over the past week or so prompted in part by the announcement of Elastic wanting to donate their profiling agent to the OpenTelemetry project. One of the bigger challenges around OpenTelemetry is that you can think of it as a vector. It not only has a shape, it has a direction, and the way you think about the project and what it is has a lot to do with how well you understand that direction. There's the OpenTelemetry of yesterday, the OpenTelemetry of today, and the OpenTelemetry of tomorrow. Let's talk about each of these in turn, so that we can try and build a model of what OpenTelemetry is in a holistic sense.

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OTel TIL – What The Heck Is Instrumentation, Anyway?

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Ever asked ChatGPT about OpenTelemetry? There's a pretty good chance that what it spits out at you started out as something I wrote, years ago. When the project started, I picked up where I left off maintaining the docs and website for OpenTracing and built the first few versions of (seen here in late 2019), including most of its initial documentation, concept pages, and so forth. Little did I realize then that the project would become as large as it did, or that everything I wrote would get repeated across the internet on dozens of other documentation sites, marketing pages, and blogs... and I really did not see those words getting fed into massive language models, thus ossifying a lot of the concepts that I wrote about into point-in-time snapshots of what a lot of words mean. One of these words, and the one I want to dive into, is instrumentation.

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Selling The Vision

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OpenTelemetry can be a difficult project to describe to people, because the gap between what it is today and what it will be tomorrow is very large. It's easy to stare at it from a distance, squint your eyes, and wonder what the hell we're doing over here. The further away you are from the core contributors, maintainers, and weird little observability guys at the center of it all, the harder it is for things to come into focus. There's a few reasons for that, one of which is that I truly think that it isn't a completely shared vision (and that's ok, for reasons I'll get into) -- but the biggest is that the vision really is just that. A vision, one that is going to take years to realize. That vision is what should excite people, but because we're not great at selling it or even describing it, it winds up turning people away.

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