feat(docker): add compose with metrics

docker/compose/validator-prod/alertmanager/alertmanager.yml

+global:
+ resolve_timeout: 1m
+
+route:
+ receiver: 'mail-notifications'
+
+receivers:
+- name: 'mail-notifications'
+  email_configs:
+  - to: 'mydedicatednodealertaddress@domain.tld'
+    from: 'sender@domain.tld'
+    smarthost: 'smtp.server.tld:587'
+    auth_username: 'sender@domain.tld'
+    auth_identity: 'sender@domain.tld'
+    auth_password: 'yrymyemufalyjing'
+    send_resolved: true

docker/compose/validator-prod/docker-compose.yml

+version: "3.4"
+
+services:
+  duniter-validator:
+    image: duniter/duniter-v2s:sha-142d4763
+    restart: unless-stopped
+    ports:
+      - 127.0.0.1:9615:9615
+      - 127.0.0.1:9933:9933
+      - 127.0.0.1:9944:9944
+      - 30333:30333
+    volumes:
+      - ./node.key:/etc/duniter/node.key
+      - duniter-validator-data:/var/lib/duniter/
+    environment:
+      - DUNITER_CHAIN_NAME=gdev
+    command:
+      - "--execution"
+      - "Wasm"
+      - "--node-key-file"
+      - "/etc/duniter/node-key"
+      - "--public-addr"
+      # SERVER_DOMAIN should be replaced by a domain name that point on your server
+      #
+      # The PEER_ID should be replaced by the output of this command:
+      # docker run --rm -it --entrypoint duniter -v $PWD:/var/lib/duniter/ duniter/duniter-v2s:sha-142d4763 key generate-node-key --file /var/lib/duniter/node.key
+      - "/dns/SERVER_DOMAIN/tcp/30333/p2p/PEER_ID"
+      - "--rpc-methods=Unsafe"
+      - "--validator"
+      - "--rpc-cors"
+      - "all"
+      - "--prometheus-external"
+
+  prometheus:
+    image: prom/prometheus:v2.30.3
+    restart: unless-stopped
+    ports:
+      - 9000:9090
+    volumes:
+      - ./prometheus:/etc/prometheus
+      - prometheus-data:/prometheus
+    command: --web.enable-lifecycle  --config.file=/etc/prometheus/prometheus.yml
+    extra_hosts:
+      - "host.docker.internal:host-gateway"
+
+  alertmanager:
+    image: prom/alertmanager:v0.24.0
+    restart: unless-stopped
+    ports:
+      - 127.0.0.1:9093:9093
+    volumes:
+      - ./alertmanager:/etc/alertmanager
+      - alertmanager-data:/alertmanager
+    command: --config.file=/etc/alertmanager/alertmanager.yml
+
+  process-exporter:
+    image: ncabatoff/process-exporter
+    restart: unless-stopped
+    privileged: True
+    ports:
+      - 127.0.0.1:9256:9256
+    volumes:
+      - /proc:/host/proc
+      - ./process-exporter:/config
+    command: --procfs /host/proc -config.path /config/config.yml
+
+  node_exporter:
+    image: quay.io/prometheus/node-exporter:latest
+    container_name: node_exporter
+    command:
+      - '--path.rootfs=/host'
+    network_mode: host
+    pid: host
+    restart: unless-stopped
+    volumes:
+      - '/:/host:ro,rslave'
+
+  grafana:
+    image: grafana/grafana:8.5.4
+    restart: unless-stopped
+    ports:
+      - 127.0.0.1:3000:3000
+    volumes:
+      - ./grafana/provisioning/datasources:/etc/grafana/provisioning/datasources
+      - grafana-data:/var/lib/grafana
+    environment:
+      - GF_INSTALL_PLUGINS=camptocamp-prometheus-alertmanager-datasource
+
+volumes:
+  alertmanager-data:
+  duniter-validator-data:
+  grafana-data:
+  prometheus-data:

docker/compose/validator-prod/grafana/provisioning/datasources/prometheus_ds.yml

+datasources:
+  - name: Prometheus
+    access: proxy
+    type: prometheus
+    url: http://prometheus:9090
+    isDefault: true
+  - name: Prometheus AlertManager
+    access: proxy
+    type: camptocamp-prometheus-alertmanager-datasource
+    url: http://alertmanager:9093

docker/compose/validator-prod/process-exporter/config.yml

+process_names:
+  - name: "{{.Comm}}"
+    cmdline:
+    - '.+'

docker/compose/validator-prod/prometheus/alert.yml

+groups:
+  - name: alert_rules
+    rules:
+      - alert: InstanceDown
+        expr: up == 0
+        for: 5m
+        labels:
+          severity: critical
+        annotations:
+          summary: "Instance $labels.instance down"
+          description: "[{{ $labels.instance }}] of job [{{ $labels.job }}] has been down for more than 1 minute."
+
+      - alert: HostHighCpuLoad
+        expr: 100 - (avg by(instance)(rate(node_cpu_seconds_total{mode="idle"}[2m])) * 100) > 80
+        for: 0m
+        labels:
+          severity: warning
+        annotations:
+          summary: Host high CPU load (instance bLd Kusama)
+          description: "CPU load is > 80%\n  VALUE = {{ $value }}\n  LABELS: {{ $labels }}"

docker/compose/validator-prod/prometheus/prometheus.yml

+rule_files:
+  - alert.yml
+
+alerting:
+  alertmanagers:
+    - static_configs:
+        - targets:
+            - localhost:9093
+
+scrape_configs:
+  - job_name: "prometheus"
+    scrape_interval: 5s
+    static_configs:
+      - targets: ["prometheus:9090"]
+  - job_name: "duniter-validator"
+    scrape_interval: 5s
+    static_configs:
+      - targets: ["duniter-validator:9615"]
+  - job_name: "node_exporter"
+    scrape_interval: 5s
+    static_configs:
+      - targets: ["host.docker.internal:9100"]
+  - job_name: "process-exporter"
+    scrape_interval: 5s
+    static_configs:
+      - targets: ["process-exporter:9256"]