Add the monitoring stack

monitoring/files/loki-config.yaml

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+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+  grpc_listen_port: 9096
+  log_level: debug
+  grpc_server_max_concurrent_streams: 1000
+
+common:
+  instance_addr: 127.0.0.1
+  path_prefix: /tmp/loki
+  storage:
+    filesystem:
+      chunks_directory: /tmp/loki/chunks
+      rules_directory: /tmp/loki/rules
+  replication_factor: 1
+  ring:
+    kvstore:
+      store: inmemory
+
+query_range:
+  results_cache:
+    cache:
+      embedded_cache:
+        enabled: true
+        max_size_mb: 100
+
+# limits_config:
+#   metric_aggregation_enabled: truez
+
+schema_config:
+  configs:
+    - from: 2020-10-24
+      store: tsdb
+      object_store: filesystem
+      schema: v13
+      index:
+        prefix: index_
+        period: 24h
+
+pattern_ingester:
+  enabled: true
+  # metric_aggregation:
+  #   enabled: true
+  #   loki_address: localhost:3100
+
+ruler:
+  alertmanager_url: http://localhost:9093
+
+frontend:
+  encoding: protobuf
+
+# By default, Loki will send anonymous, but uniquely-identifiable usage and configuration
+# analytics to Grafana Labs. These statistics are sent to https://stats.grafana.org/
+#
+# Statistics help us better understand how Loki is used, and they show us performance
+# levels for most users. This helps us prioritize features and documentation.
+# For more information on what's sent, look at
+# https://github.com/grafana/loki/blob/main/pkg/analytics/stats.go
+# Refer to the buildReport method to see what goes into a report.
+#
+# If you would like to disable reporting, uncomment the following lines:
+#analytics:
+#  reporting_enabled: false

monitoring/files/nginx.conf.j2

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+server {
+
+  listen 80;
+  server_name {{ http_host }};
+
+  location / {
+    proxy_set_header Host $http_host;
+    proxy_pass http://localhost:3005/;
+  }
+
+  location /api/live/ {
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+    proxy_set_header Host $http_host;
+    proxy_pass http://localhost:3005/;
+  }
+
+}
+

monitoring/files/passwd

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+esp8266:esp8266
+nodered:nodered

monitoring/files/promtail-config.yaml

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+server:
+  http_listen_port: "{{ promtail_port }}"
+  grpc_listen_port: 0
+
+positions:
+  filename: /tmp/positions.yaml
+
+clients:
+  - url: "http://loki:{{ loki_port }}/loki/api/v1/push"
+
+scrape_configs:
+- job_name: system
+  static_configs:
+  - targets:
+      - localhost
+    labels:
+      job: varlogs
+      __path__: /var/log/*log
+- job_name: docker
+  static_configs:
+    - targets:
+        - localhost
+      labels:
+        job: docker
+        __path__: /var/lib/docker/containers/*/*.log