development.md

Development Guide

Welcome! This guide will help you set up your local development environment for SigNoz. Let's get you started! 🚀

What do I need?

Before diving in, make sure you have these tools installed:

• Git - Our version control system

  • Download from git-scm.com

• Go - Powers our backend

  • Download from go.dev/dl
  • Check go.mod for the minimum version

• Node - Powers our frontend

  • Download from nodejs.org
  • Check .nvmrc for the version

• Yarn - Our frontend package manager

  • Follow the installation guide

• Docker - For running Clickhouse and Postgres locally

  • Get it from docs.docker.com/get-docker

💡 Tip: Run make help to see all available commands with descriptions

How do I get the code?

1. Open your terminal
2. Clone the repository:

   git clone https://github.com/SigNoz/signoz.git

3. Navigate to the project:

   cd signoz

How do I run it locally?

SigNoz has three main components: Clickhouse, Backend, and Frontend. Let's set them up one by one.

1. Setting up ClickHouse

First, we need to get ClickHouse running:

make devenv-clickhouse

This command:

• Starts ClickHouse in a single-shard, single-replica cluster
• Sets up Zookeeper
• Runs the latest schema migrations

2. Setting up SigNoz OpenTelemetry Collector

Next, start the OpenTelemetry Collector to receive telemetry data:

make devenv-signoz-otel-collector

This command:

• Starts the SigNoz OpenTelemetry Collector
• Listens on port 4317 (gRPC) and 4318 (HTTP) for incoming telemetry data
• Forwards data to ClickHouse for storage

💡 Quick Setup: Use make devenv-up to start both ClickHouse and OTel Collector together

3. Starting the Backend

1. Run the backend server:

   make go-run-community

2. Verify it's working:

   curl http://localhost:8080/api/v1/health

   You should see: {"status":"ok"}

💡 Tip: The API server runs at http://localhost:8080/ by default

4. Setting up the Frontend

1. Navigate to the frontend directory:

   cd frontend

2. Install dependencies:

   yarn install

3. Create a .env file in this directory:

   FRONTEND_API_ENDPOINT=http://localhost:8080

4. Start the development server:

   yarn dev

💡 Tip: yarn dev will automatically rebuild when you make changes to the code

Now you're all set to start developing! Happy coding! 🎉

Verifying Your Setup

To verify everything is working correctly:

1. Check ClickHouse: curl http://localhost:8123/ping (should return "Ok.")
2. Check OTel Collector: curl http://localhost:13133 (should return health status)
3. Check Backend: curl http://localhost:8080/api/v1/health (should return {"status":"ok"})
4. Check Frontend: Open http://localhost:3301 in your browser

How to send test data?

You can now send telemetry data to your local SigNoz instance:

• OTLP gRPC: localhost:4317
• OTLP HTTP: localhost:4318

For example, using curl to send a test trace:

curl -X POST http://localhost:4318/v1/traces \
  -H "Content-Type: application/json" \
  -d '{"resourceSpans":[{"resource":{"attributes":[{"key":"service.name","value":{"stringValue":"test-service"}}]},"scopeSpans":[{"spans":[{"traceId":"12345678901234567890123456789012","spanId":"1234567890123456","name":"test-span","startTimeUnixNano":"1609459200000000000","endTimeUnixNano":"1609459201000000000"}]}]}]}'