From 5249c86ee80816d8630b9628522e7c472be688aa Mon Sep 17 00:00:00 2001
From: Maksim Syomochkin <maksim77ster@gmail.com>
Date: Wed, 18 Dec 2024 23:20:25 +0300
Subject: [PATCH] inital commit

---
 README.md                       | 26 ++++++++++++++++++++
 TODO.md                         |  3 +++
 compose.yaml                    | 42 +++++++++++++++++++++++++++++++++
 grafana/datasource.yml          | 14 +++++++++++
 otel/otel-collector-config.yaml | 28 ++++++++++++++++++++++
 prometheus/prometheus.yml       | 39 ++++++++++++++++++++++++++++++
 6 files changed, 152 insertions(+)
 create mode 100644 README.md
 create mode 100644 TODO.md
 create mode 100644 compose.yaml
 create mode 100644 grafana/datasource.yml
 create mode 100644 otel/otel-collector-config.yaml
 create mode 100644 prometheus/prometheus.yml

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..2a8e360
--- /dev/null
+++ b/README.md
@@ -0,0 +1,26 @@
+# OTEL Collector Dev Stand
+A simple Docker Compose setup that launches pre-configured and integrated services, allowing fully testing interactions with OpenTelemetry:
+- OTEL Collector
+- Jaeger
+- Prometheus
+- Grafana
+
+## OTEL Collector
+Listens on standard OTLP ports (4317 gRPC, 4318 HTTP) and sends trace data to Jaeger. It also collects metrics and exposes them on port 8889 as a standard Prometheus exporter.
+
+## Jaeger
+Accessible on port 16686. Receives traces from the OTEL Collector.
+
+## Prometheus
+Accessible on port 9090.
+Collects metrics from the following targets:
+- OTEL Collector
+- Grafana self-monitoring
+- Prometheus self-monitoring
+
+## Grafana
+Accessible on port 3000.
+Login credentials: `admin/grafana`.
+The following datasources are connected:
+- Jaeger
+- Prometheus
\ No newline at end of file
diff --git a/TODO.md b/TODO.md
new file mode 100644
index 0000000..f13f7c1
--- /dev/null
+++ b/TODO.md
@@ -0,0 +1,3 @@
+# TODO List for OTEL Collector Dev Stand
+
+- [ ] Add support for log collection and processing within the OTEL Collector setup.
\ No newline at end of file
diff --git a/compose.yaml b/compose.yaml
new file mode 100644
index 0000000..945bc31
--- /dev/null
+++ b/compose.yaml
@@ -0,0 +1,42 @@
+services:
+  prometheus:
+    image: prom/prometheus
+    container_name: prometheus
+    command:
+      - '--config.file=/etc/prometheus/prometheus.yml'
+    ports:
+      - 9090:9090
+    volumes:
+      - ./prometheus:/etc/prometheus
+
+  grafana:
+    image: grafana/grafana
+    container_name: grafana
+    ports:
+      - 3000:3000
+    environment:
+      - GF_SECURITY_ADMIN_USER=admin
+      - GF_SECURITY_ADMIN_PASSWORD=grafana
+    volumes:
+      - ./grafana:/etc/grafana/provisioning/datasources
+
+  otel-collector:
+    image: otel/opentelemetry-collector:latest
+    container_name: otel-collector
+    command: ["--config=/etc/otel-collector-config.yaml"]
+    volumes:
+      - ./otel/otel-collector-config.yaml:/etc/otel-collector-config.yaml
+    ports:
+      - "4317:4317"  # OTLP gRPC receiver
+      - "8889:8889"  # Prometheus exposed port
+    depends_on:
+      - jaeger
+
+  jaeger:
+    image: jaegertracing/all-in-one:latest
+    container_name: jaeger
+    environment:
+      - COLLECTOR_OTLP_ENABLED=true
+      - COLLECTOR_OTLP_GRPC_HOST_PORT=:4317
+    ports:
+      - "16686:16686"
\ No newline at end of file
diff --git a/grafana/datasource.yml b/grafana/datasource.yml
new file mode 100644
index 0000000..fe75757
--- /dev/null
+++ b/grafana/datasource.yml
@@ -0,0 +1,14 @@
+apiVersion: 1
+
+datasources:
+- name: Prometheus
+  type: prometheus
+  url: http://prometheus:9090 
+  isDefault: true
+  access: proxy
+  editable: true
+- name: Jaeger
+  type: jaeger
+  url: http://jaeger:16686
+  access: proxy
+  editable: true
\ No newline at end of file
diff --git a/otel/otel-collector-config.yaml b/otel/otel-collector-config.yaml
new file mode 100644
index 0000000..83f41b7
--- /dev/null
+++ b/otel/otel-collector-config.yaml
@@ -0,0 +1,28 @@
+receivers:
+  otlp:
+    protocols:
+      grpc:
+        endpoint: 0.0.0.0:4317
+      http:
+       endpoint: 0.0.0.0:4318
+processors:
+exporters:
+  otlp:
+    endpoint: "http://jaeger:4317"
+    tls:
+      insecure: true
+  debug:
+    verbosity: detailed
+  prometheus:
+    endpoint: 0.0.0.0:8889
+service:
+  pipelines:
+    traces:
+      receivers: [otlp]
+      processors: []
+      exporters: [otlp, debug]
+    metrics:
+      receivers: [otlp]
+      processors: []
+      exporters: [prometheus, debug]
+
diff --git a/prometheus/prometheus.yml b/prometheus/prometheus.yml
new file mode 100644
index 0000000..990e2ae
--- /dev/null
+++ b/prometheus/prometheus.yml
@@ -0,0 +1,39 @@
+global:
+  scrape_interval: 15s
+  scrape_timeout: 10s
+  evaluation_interval: 15s
+alerting:
+  alertmanagers:
+  - static_configs:
+    - targets: []
+    scheme: http
+    timeout: 10s
+    api_version: v2
+scrape_configs:
+- job_name: prometheus
+  honor_timestamps: true
+  scrape_interval: 15s
+  scrape_timeout: 10s
+  metrics_path: /metrics
+  scheme: http
+  static_configs:
+  - targets:
+    - localhost:9090
+- job_name: grafana
+  honor_timestamps: true
+  scrape_interval: 15s
+  scrape_timeout: 10s
+  metrics_path: /metrics
+  scheme: http
+  static_configs:
+  - targets:
+    - grafana:3000
+- job_name: otel-collector
+  honor_timestamps: true
+  scrape_interval: 15s
+  scrape_timeout: 10s
+  metrics_path: /metrics
+  scheme: http
+  static_configs:
+  - targets:
+    - otel-collector:8889
\ No newline at end of file