feat: Add monitoring services.

.gitignore

@@ -0,0 +1 @@
+.env

monitoring/.env.example

@@ -0,0 +1,2 @@
+GRAFANA_HOST=grafana.example.org
+PROMETHEUS_HOST=prometheus.example.org

monitoring/docker-compose.yml

@@ -0,0 +1,45 @@
+version: '3.8'
+
+networks:
+  web:
+    external: true
+  monitoring:
+    driver: bridge
+
+volumes:
+  grafana-data:
+  prometheus-data:
+
+services:
+  grafana:
+    image: grafana/grafana-oss:8.2.0
+    restart: unless-stopped
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.grafana.entrypoints=http"
+      - "traefik.http.routers.grafana.rule=Host(`${GRAFANA_HOST}`)"
+      - "traefik.http.services.grafana.loadbalancer.server.port=3000"
+    networks:
+      - web
+      - monitoring
+    volumes:
+      - grafana-data:/var/lib/grafana
+
+  prometheus:
+    image: prom/prometheus:v2.41.0
+    restart: unless-stopped
+    volumes:
+      - ./prometheus.yml:/etc/prometheus/prometheus.yml
+      - prometheus-data:/prometheus
+    command:
+      - '--config.file=/etc/prometheus/prometheus.yml'
+      - '--storage.tsdb.path=/prometheus'
+      - '--storage.tsdb.retention.time=365d'
+    labels:
+      - "traefik.enable=true"
+      - "traefik.http.routers.prometheus.entrypoints=http"
+      - "traefik.http.routers.prometheus.rule=Host(`${PROMETHEUS_HOST}`)"
+      - "traefik.http.services.prometheus.loadbalancer.server.port=9090"
+    networks:
+      - web
+      - monitoring

monitoring/prometheus.yml

@@ -0,0 +1,17 @@
+global:
+  scrape_interval: 15s
+  
+  external_labels:
+    monitor: codelab-monitor
+
+scrape_configs:
+  - job_name: 'node'
+    scheme: https
+    basic_auth:
+      username: username
+      password: password
+    tls_config:
+      insecure_skip_verify: true
+    static_configs:
+      - targets:
+        - 'server.example.com:9100'

traefik/docker-compose.yml

@@ -0,0 +1,19 @@
+version: '3'
+
+networks:
+  web:
+    external: true
+
+services:
+  traefik:
+    image: traefik:2.9
+    restart: unless-stopped
+    networks:
+      - web    
+    ports:
+      - "80:80"
+      - "443:443"
+      - "8080:8080"
+    volumes:
+      - './traefik.yml:/etc/traefik/traefik.yml'      
+      - '/var/run/docker.sock:/var/run/docker.sock:ro'

traefik/traefik.yml

@@ -0,0 +1,15 @@
+entryPoints:
+  http:
+    address: ':80'
+  https:
+    address: ':443'
+
+api:
+  dashboard: true
+  insecure: true
+
+providers:
+  docker:
+    network: 'web'
+    endpoint: 'unix:///var/run/docker.sock'
+    exposedByDefault: false