Few commands to configure Grafana Agent to allow sending data to Grafana Cloud

grafana_cloud_raspberry_pi.sh

# Install blackbox-exporter
apt update
apt install -y prometheus-blackbox-exporter


# Chnage the garfana agent config file /etc/grafana-agent.yaml
cat > /etc/grafana-agent.yaml << EOF
integrations:
  agent:
    enabled: true
  process_exporter:
    enabled: true
    process_names:
      - comm:
        - grafana-agent
        - prometheus-blac
        - systemd
  node_exporter:
    enabled: true
    enable_collectors:
      - interrupts
      - meminfo_numa
      - mountstats
      - systemd
      - tcpstat
  prometheus_remote_write:
  - basic_auth:
      password: eyxxxxxxxxxxxxxxxF9
      username: 2xxxxxx2
    url: https://prometheus-prod-01-eu-west-0.grafana.net/api/prom/push
loki:
  configs:
  - clients:
    - basic_auth:
        password: eyxxxxxxxxxxxxxxxF9
        username: 1yyyyyyyy6
      url: https://logs-prod-eu-west-0.grafana.net/api/prom/push
    name: integrations
    positions:
      filename: /tmp/positions.yaml
    target_config:
      sync_period: 10s
    scrape_configs:
      - job_name: system
        static_configs:
        - labels:
            __path__: /var/log/{*log,daemon,messages}
            job: varlogs
          targets:
          - localhost      
prometheus:
  configs:
    - name: agent
      scrape_configs:
        - job_name: grafana-agent
          static_configs:
            - targets: ['127.0.0.1:12345']
        - job_name: blackbox-http_2xx
          metrics_path: /probe
          params:
            module: [http_2xx]
          static_configs:
            - targets:
              - http://192.168.1.1
              - https://google.com
              - https://root.cz
          relabel_configs:
            - source_labels: [__address__]
              target_label: __param_target
            - source_labels: [__param_target]
              target_label: instance
            - target_label: __address__
              replacement: 127.0.0.1:9115
        - job_name: blackbox-icmp
          metrics_path: /probe
          params:
            module: [icmp]
          scrape_interval: 5s
          static_configs:
            - targets:
              - 192.168.1.1
              - google.com
              - root.cz
          relabel_configs:
            - source_labels: [__address__]
              target_label: __param_target
            - source_labels: [__param_target]
              target_label: instance
            - target_label: __address__
              replacement: 127.0.0.1:9115
      remote_write:
      - basic_auth:
          password: eyxxxxxxxxxxxxxxxF9
          username: 2xxxxxx2
        url: https://prometheus-prod-01-eu-west-0.grafana.net/api/prom/push
  global:
    scrape_interval: 60s
  wal_directory: /tmp/grafana-agent-wal
server:
  http_listen_port: 12345
EOF


# Chnage the garfana agent config file /etc/prometheus/blackbox.yml and add preferred protocol
cat > /etc/prometheus/blackbox.yml << EOF
modules:
  http_2xx:
    prober: http
    http:
      preferred_ip_protocol: ip4
  tcp_connect:
    prober: tcp
    tcp:
      preferred_ip_protocol: ip4
  icmp:
    prober: icmp
    icmp:
      preferred_ip_protocol: ip4
EOF

systemctl restart prometheus-blackbox-exporter grafana-agent