add blackbox-exporter, loki/promtail configs; fix prometheus: host network for WG access

blackbox.yml

@@ -0,0 +1,7 @@
+modules:
+  http_2xx:
+    prober: http
+    timeout: 5s
+    http:
+      valid_status_codes: [200]
+      follow_redirects: true

docker-compose.yml

@@ -14,10 +14,7 @@ services:
       - '--config.file=/etc/prometheus/prometheus.yml'
       - '--storage.tsdb.retention.time=30d'
       - '--storage.tsdb.path=/prometheus'
-    ports:
-      - "9090:9090"
-    networks:
-      - monitoring
+    network_mode: host
 
   grafana:
     image: grafana/grafana:11.1.0
@@ -65,6 +62,15 @@ services:
     networks:
       - monitoring
 
+  blackbox-exporter:
+    image: prom/blackbox-exporter:v0.25.0
+    container_name: blackbox-exporter
+    restart: unless-stopped
+    command: --config.file=/etc/blackbox/blackbox.yml
+    volumes:
+      - ./blackbox.yml:/etc/blackbox/blackbox.yml:ro
+    network_mode: host
+
 networks:
   monitoring:
     driver: bridge

loki-config.yaml

@@ -0,0 +1,34 @@
+# Loki config (single-binary, local storage)
+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+
+common:
+  path_prefix: /loki
+  storage:
+    filesystem:
+      chunks_directory: /loki/chunks
+      rules_directory: /loki/rules
+  replication_factor: 1
+  ring:
+    kvstore:
+      store: inmemory
+
+schema_config:
+  configs:
+    - from: 2024-01-01
+      store: tsdb
+      object_store: filesystem
+      schema: v13
+      index:
+        prefix: index_
+        period: 24h
+
+limits_config:
+  retention_period: 168h  # 7 дней
+  allow_structured_metadata: true
+
+compactor:
+  working_directory: /loki/compactor
+  compaction_interval: 15m

prometheus.yml

@@ -8,7 +8,7 @@ rule_files:
   - /etc/prometheus/alerts.yml
 
 scrape_configs:
-  # Garage node metrics (admin API on WG)
+  # Garage node metrics (admin API on WG) — Bearer auth
   - job_name: 'garage'
     metrics_path: /metrics
     scheme: http
@@ -20,16 +20,30 @@ scrape_configs:
         labels:
           cluster: garage
 
-  # Health check for each node (returns 200 if quorum OK)
+  # HTTP health probe via blackbox-exporter (returns probe_success)
   - job_name: 'garage_health'
-    metrics_path: /health
-    scheme: http
+    metrics_path: /probe
+    params:
+      module: [http_2xx]
     static_configs:
-      - targets: ['10.8.0.1:3903', '10.8.0.2:3903', '10.8.0.4:3903']
+      - targets: ['http://10.8.0.1:3903/health']
         labels:
-          cluster: garage
+          instance: vps01
+      - targets: ['http://10.8.0.2:3903/health']
+        labels:
+          instance: bigbox
+      - targets: ['http://10.8.0.4:3903/health']
+        labels:
+          instance: vps02
+    relabel_configs:
+      - source_labels: [__address__]
+        target_label: __param_target
+      - source_labels: [__param_target]
+        target_label: target
+      - target_label: __address__
+        replacement: 127.0.0.1:9115
 
-  # Node exporter on each host (system metrics)
+  # Node exporter on each host (system metrics via WG)
   - job_name: 'node'
     static_configs:
       - targets: ['10.8.0.2:9100']

promtail-config.yaml

@@ -0,0 +1,23 @@
+# Promtail config: docker-логи (garage и др.) + собственные логи vps01/vps02 через WG
+server:
+  http_listen_port: 9080
+  grpc_listen_port: 0
+
+positions:
+  filename: /tmp/positions.yaml
+
+clients:
+  - url: http://loki:3100/loki/api/v1/push
+
+scrape_configs:
+  # Логи docker-контейнеров на bigbox (garage и др.)
+  - job_name: docker
+    docker_sd_configs:
+      - host: unix:///var/run/docker.sock
+        refresh_interval: 15s
+    relabel_configs:
+      - source_labels: ['__meta_docker_container_name']
+        regex: '/(.*)'
+        target_label: 'container'
+      - source_labels: ['__meta_docker_container_log_stream']
+        target_label: 'stream'