Jaeger + CORS Proxy

compose.yml

services:
  nginx:
    image: nginx:latest
    volumes:
      - ./nginx.conf:/etc/nginx/nginx.conf:ro
    ports:
      - "16686:16686"         # Both Jaeger UI and exporter are on the same port.
    depends_on:
      - jaeger

  jaeger:
    image: jaegertracing/all-in-one:1.62.0
    environment:
      COLLECTOR_ZIPKIN_HTTP_PORT: 9411
    expose:
      - "16686"   # Jaeger UI
      - "4318"   # HTTP collector

nginx.conf

events {}

error_log /dev/stderr error;

http {
    server {
        listen 16686;

        # Jaeger UI
        location / {
            proxy_pass http://jaeger:16686;
            add_header 'Access-Control-Allow-Origin' '*';
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
            add_header 'Access-Control-Allow-Headers' 'Authorization, Content-Type';
            if ($request_method = OPTIONS) {
                return 204;
            }
        }

        # Jaeger HTTP Collector
        location /v1/traces {
            proxy_pass http://jaeger:4318/v1/traces;
            add_header 'Access-Control-Allow-Origin' '*';
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
            add_header 'Access-Control-Allow-Headers' 'Authorization, Content-Type';
            if ($request_method = OPTIONS) {
                return 204;
            }
        }

        # Jaeger gRPC Collector
        location /grpc {
            proxy_pass http://jaeger:14250;
            add_header 'Access-Control-Allow-Origin' '*';
            add_header 'Access-Control-Allow-Methods' 'GET, POST, OPTIONS';
            add_header 'Access-Control-Allow-Headers' 'Authorization, Content-Type';
            if ($request_method = OPTIONS) {
                return 204;
            }
        }
    }
}