The Technical Oversight Committee (TOC) of the Cloud Native Computing Foundation (CNCF) has voted to accept OpenTelemetry as an incubating project as part of an ongoing effort to simplify instrumentation of software using open source agent software.
OpenTelemetry is a collection of tools, application programming interfaces (APIs) and software development kits (SDKs) that can be employed to collect metrics, logs and traces that make it simpler to determine the root cause of an application issue.
At its core, OpenTelemetry is based on an OpenTelemetry Protocol (OTLP) specification that describes the encoding, transport and delivery mechanism of telemetry data gathered from sources, intermediate nodes and backend platforms. An OpenTelemetry Collector provides a vendor-agnostic implementation for receiving, processing and exporting telemetry data. APIs and SDKs that make it possible to instrument applications are available for 11 different programming languages.
Previously a sandbox-level project within the CNCF, the next step would be for OpenTelemetry to become a graduated level project alongside other open source offerings such as Kubernetes and Prometheus, a platform used to monitor IT environments.
The OpenTelemetry project was created via the merger of the OpenCensus and OpenTracing projects in May 2019. Since then more than 500 developers from 220 companies, including Amazon, Dynatrace, Google, Honeycomb, Lightstep, Microsoft, Splunk and Uber have contributed to the project.
Most providers of observability platforms have at least signaled their intent to support OpenTelemetry as an alternative to proprietary agent software they had previously created to collect metrics, logs and traces.
Ben Sigelman, one of the co-creators of both OpenTracing and OpenTelemetry and CEO of Lightstep, said different elements of the OpenTelemetry project are at varying stages of maturity. As such, support for the elements of the project are being added to platforms depending on the degree to which a vendor has confidence in, for example, the ability of OpenTelemetry agent software to collect logs.
Liz Fong-Jones, principal developer advocate for Honeycomb.io, a provider of an observability platform, said that, in time, most observability platforms will support all the elements of the OpenTelemetry initiative to reduce their own engineering and support costs. In time, those savings will be passed on to organizations that will be able to instrument applications more affordably, she noted.
It may take a while longer for OpenTelemetry to be widely employed, but the faster organizations transition to microservices-based applications the more pressing the need for open source telemetry software becomes. The dependencies that exist between all the microservices that make up multiple applications will be unmanageable without some form of telemetry. The challenge organizations face is finding an affordable way to instrument all those microservices.
Of course, organizations have been instrumenting applications for decades. However, the time, effort and cost associated with instrumentation have tended to limit its use to only an organization’s most mission-critical applications. The issue now is that not only do microservices-based applications require instrumentation to manage them but in the age of digital transformation the percentage of applications deemed mission-critical is also steadily rising.
