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opentelemetry-specification
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docs
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OpenTelemetry in 2023
Prometheus text exposition format is de-facto standard used in monitoring. It would be great building an official observability standard on top it. This format is much easier to debug and understand than OpenTelemetry for metrics. It is also more efficient, e.g. it requires less network bandwidth and less CPU for transfer than Otel for metrics.
[1] https://github.com/prometheus/docs/blob/main/content/docs/in...
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Kubernetes prometheus metrics for running pods and nodes?
I've set up prometheus to monitor kubernetes metrics by following the prometheus documentation.
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Minimal, allocation-free OpenMetrics implementation for no-std/embedded Rust
It was added back to Prometheus.
https://github.com/prometheus/docs/blob/main/content/docs/in...
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What is promeetheus monitoring?
Exporters are third-party tools that send metrics to the Prometheus server. When Prometheus cannot access metrics, it uses exporters. These exporters export metrics from systems and send the metrics to the Prometheus server. There are official and non-official exporters in Prometheus' GitHub organization.
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Energy monitor exporter?
Now I'm looking for another energy monitor and I'm really struggling to find one! https://github.com/prometheus/docs/blob/main/content/docs/instrumenting/exporters.md
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Monitoring Rust web application with Prometheus and Grafana
Metrics are exposed in a simple text-based format.
opentelemetry-specification
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OpenTelemetry Journey #00 - Introduction to OpenTelemetry
It means that the OpenTelemetry project provides not only a specification to define the contract between the applications, collectors, and telemetry databases, but also a set of APIs, SDKs, and tools like instrumentation libraries (for different languages), collectors, operators, etc. OpenTelemetry is open-source and vendor-agnostic, so the project is not tied to any specific vendor or cloud provider.
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Migrating to OpenTelemetry
Sure, happy to provide more specifics!
Our main issue was the lack of a synchronous gauge. The officially supported asynchronous API of registering a callback function to report a gauge metric is very different from how we were doing things before, and would have required lots of refactoring of our code. Instead, we wrote a wrapper that exposes a synchronous-like API: https://gist.github.com/yolken-airplane/027867b753840f7d15d6....
It seems like this is a common feature request across many of the SDKs, and it's in the process of being fixed in some of them (https://github.com/open-telemetry/opentelemetry-specificatio...)? I'm not sure what the plans are for the golang SDK specifically.
Another, more minor issue, is the lack of support for "constant" attributes that are applied to all metrics. We use these to identify the app, among other use cases, so we added wrappers around the various "Add", "Record", "Observe", etc. calls that automatically add these. (It's totally possible that this is supported and I missed it, in which case please let me know!).
Overall, the SDK was generally well-written and well-documented, we just needed some extra work to make the interfaces more similar to the ones were were using before.
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OpenTelemetry Exporters - Types and Configuration Steps
OpenTelemetry is an open-source collection of tools, APIs, and SDKs that aims to standardize the way we generate and collect telemetry data. It follows a specification-driven development. The OpenTelemetry specification has design and implementation guidelines for how the instrumentation libraries should be implemented. In addition, it provides client libraries in all the major programming languages that follow the specification.
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OpenTelemetry in 2023
Two problems with OpenTelemetry:
1. It doesn't know what the hell it is. Is it a semantic standard? Is a protocol? It is a facade? What layer of abstraction does it provide? Answer: All of the above! All the things! All the layers!
2. No one from OpenTelemetry has actually tried instrumenting a library. And if they have, they haven't the first suggestion on how instrumenters should actually use metrics, traces, and logs. Do you write to all three? To one? I asked this question two years ago, not a single response. [1]
[1] https://github.com/open-telemetry/opentelemetry-specificatio...
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Tracetest Analyzer: Identify patterns and issues with code instrumentation
OpenTelemetry Specification GitHub
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OpenTelemetry vs. OpenMetrics: Which semantic convention should you use?
One update to this: we proposed replacing the count suffix in OpenTelemetry with total to match Prometheus/OpenMetrics. That discussion resulted in the count suffix being removed from the OpenTelemetry semantic conventions. We'll soon update our metric from being called function.calls.count to just function.calls and the generated Prometheus queries will refer to function_calls_total. That resolves one of the main conflicts between the two specs.
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OpenTelemetry Logs status?
This is your best bet if you want to track status updates: https://github.com/open-telemetry/opentelemetry-specification/issues/2911
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Distributed Tracing with OpenTelemetry - Part I
OpenTelemetry is a standard for implementing telemetry in your applications. It provides a specification, containing the requirements that all implementations should follow as well as some implementations for major languages, including an API and a SDK to interact with it.
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Observability - ApostropheCMS, OpenTelemetry, and New Relic
At this point, we are about to do the real work where we have to configure OpenTelemetry and export telemetry data to New Relic. Exporting this kind of data relies on a specific protocol; the OpenTelemetry Protocol or OTLP.
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OpenTelemetry Logs - A Complete Introduction & Implementation
OpenTelemetry provides instrumentation libraries for your application. The development of these libraries is guided by the OpenTelemetry specification. The OpenTelemetry specification describes the cross-language requirements and design expectations for all OpenTelemetry implementations in various programming languages.
What are some alternatives?
flight-manual.atom.io - 📖 Documentation for Atom, generated by nanoc, hosted by GitHub Pages
Sentry - Developer-first error tracking and performance monitoring
community - OpenTelemetry community content
Serilog - Simple .NET logging with fully-structured events
windows_exporter - Prometheus exporter for Windows machines
zipkin - Zipkin is a distributed tracing system
rust-prometheus - Prometheus instrumentation library for Rust applications
pino - 🌲 super fast, all natural json logger
terraform-aws-jaeger - Terraform module for Jeager
Hangfire - An easy way to perform background job processing in .NET and .NET Core applications. No Windows Service or separate process required
prometheus - The Prometheus monitoring system and time series database.
otel-with-apache-pulsar - Example of application that produces and consumes events to/from Apache Pulsar. Traces from the transactions are captured using OpenTelemetry and sent to Elastic Observability.