otelify.sh - zero-code instrumentation for every application

otelify.sh is a shell script that allows you to instrument almost any application without the need to touch the application's code. This way you can extract telemetry out of an application within seconds. It utilizes different zero-code instrumentation solutions provided by the OpenTelemetry project.

Prerequisites

• bash
• curl

Depending on the applications you want to instrument, you will also need:

• node
• dotnet
• java

The supported versions of these depends on the used zero-code instrumentations, provided by the OpenTelemetry project.

Usage

Download otelify.sh and make it executable:

curl -v -L -O https://github.com/cisco-open/otelify.sh/releases/latest/download/otelify.sh
chmod +x otelify.sh

Then, use it as a wrapper around your instructions to run the application, e.g.

otelify.sh -- java -jar YourApplication.jar

This will automatically download the OpenTelemetry Java agent and add it to the Java application via the javaagent parameter.

Besides Java otelify.sh can also instrument .NET and Node.js applications for you.

For Node.js you also use otelify.sh before calling node:

otelify.sh -- node your-app.js

This will automatically install the @opentelemetry/auto-instrumentations-node package and use the build in capabilities to instrument a Node.js application without touching the code.

For .NET as well you only need to put otelify.sh in front of your command:

otelify.sh -- dotnet YourApplication.dll

This will automatically install the OpenTelemetry .NET Automatic Instrumentation and use it to instrument your application.

otelify.sh tries to detect the language of your application using different information points. If it is not possible to detect the language, it will apply all instrumentations at once. This way it may be lucky and pick the right instrumentation by chance. If you do not want this behavior, run otelify.sh in strict mode:

otelify.sh -s -- ./unknown-language.sh

This call will fail, because otelify.sh will not be able to detect any of the support languages.

Examples

For a more detailed example, take a look at the Node.js in Docker example, which demonstrates how you can add otelify.sh to an existing containerized application.

More Documentation

Run otelify.sh -h to get a list of available options and environment variables.

Contributing

Pull requests and bug reports are welcome. For larger changes please create an issue first to discuss your proposed changes and possible implications.

For more details please see the CONTRIBUTING.md

License

See LICENSE