caddy / prometheus / grafana

a better version of the nginx otel config

Caddy/Caddyfile

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+{
+	admin :2019
+
+	servers {
+		metrics
+	}
+}
+
+:80
+respond "Data\n"
+

Caddy/README.md

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+This is almost production ready.
+
+You would want to change the Caddyfile and also the Grafana config in the docker compose file. Currently it doesn't ask for credentials as just gives you admin privilages. Nice for testing tho.

Caddy/docker-compose.yml

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+services:
+  # r-proxy, log generator
+  caddy:
+    image: caddy:latest
+    restart: unless-stopped
+    ports:
+      - "80:80"
+      - "443:443"
+      - "443:443/udp"
+    volumes:
+      - './Caddyfile:/etc/caddy/Caddyfile'
+
+  # log collector
+  prometheus:
+    image: prom/prometheus:latest
+    volumes:
+      - './prometheus.yaml:/etc/prometheus/prometheus.yml'
+    depends_on:
+      - caddy
+
+  # log viewer
+  grafana:
+    image: grafana/grafana:latest
+    volumes:
+      # needs another volume for persistant storage
+      - './grafana.yaml:/etc/grafana/provisioning/datasources/datasources.yaml'
+    environment:
+      - GF_AUTH_ANONYMOUS_ENABLED=true
+      - GF_AUTH_ANONYMOUS_ORG_ROLE=Admin
+      - GF_AUTH_DISABLE_LOGIN_FORM=true
+      - GF_FEATURE_TOGGLES_ENABLE=traceqlEditor
+    ports:
+      - "3000:3000"
+    depends_on:
+      - prometheus
+

Caddy/grafana.yaml

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+apiVersion: 1
+
+datasources:
+- name: Prometheus
+  type: prometheus
+  uid: prometheus
+  access: proxy
+  orgId: 1
+  url: http://prometheus:9090
+  basicAuth: false
+  isDefault: false
+  version: 1
+  editable: false
+  jsonData:
+    httpMethod: GET

Caddy/prometheus.yaml

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+global:
+  scrape_interval: 15s # default is 1 minute
+
+scrape_configs:
+  - job_name: caddy
+    static_configs:
+      # docker networking
+      - targets: ['caddy:2019']