ติดตั้ง Grafana Cloud Monitoring บน Ubuntu 24.04 ด้วย Grafana Alloy

● alloy.service - Grafana Alloy
     Loaded: loaded (/etc/systemd/system/alloy.service; enabled)
     Active: active (running)

// ============================================================
// Remote Configuration & Endpoints
// ============================================================
 
remotecfg {
  url            = "https://fleet-management-prod-XXX.grafana.net"
  id             = "your-server-hostname"
  poll_frequency = "60s"
 
  basic_auth {
    username = "YOUR_FM_ID"
    password = sys.env("GCLOUD_RW_API_KEY")
  }
}
 
prometheus.remote_write "metrics_service" {
  endpoint {
    url = "https://prometheus-prod-XX.grafana.net/api/prom/push"
 
    basic_auth {
      username = "YOUR_METRICS_ID"
      password = sys.env("GCLOUD_RW_API_KEY")
    }
  }
}
 
loki.write "grafana_cloud_loki" {
  endpoint {
    url = "https://logs-prod-XXX.grafana.net/loki/api/v1/push"
 
    basic_auth {
      username = "YOUR_LOGS_ID"
      password = sys.env("GCLOUD_RW_API_KEY")
    }
  }
}
 
// ============================================================
// Linux Node Exporter (CPU, Memory, Disk, Network)
// ============================================================
 
discovery.relabel "integrations_node_exporter" {
  targets = prometheus.exporter.unix.integrations_node_exporter.targets
 
  rule {
    target_label = "instance"
    replacement  = constants.hostname
  }
 
  rule {
    target_label = "job"
    replacement  = "integrations/node_exporter"
  }
}
 
prometheus.exporter.unix "integrations_node_exporter" {
  disable_collectors = ["ipvs", "btrfs", "infiniband", "xfs", "zfs"]
 
  filesystem {
    fs_types_exclude     = "^(autofs|binfmt_misc|bpf|cgroup2?|configfs|debugfs|devpts|devtmpfs|tmpfs|fusectl|hugetlbfs|iso9660|mqueue|nsfs|overlay|proc|procfs|pstore|rpc_pipefs|securityfs|selinuxfs|squashfs|sysfs|tracefs)$"
    mount_points_exclude = "^/(dev|proc|run/credentials/.+|sys|var/lib/docker/.+)($|/)"
    mount_timeout        = "5s"
  }
 
  netclass {
    ignored_devices = "^(veth.*|cali.*|[a-f0-9]{15})$"
  }
 
  netdev {
    device_exclude = "^(veth.*|cali.*|[a-f0-9]{15})$"
  }
}
 
prometheus.scrape "integrations_node_exporter" {
  targets    = discovery.relabel.integrations_node_exporter.output
  forward_to = [prometheus.relabel.integrations_node_exporter.receiver]
}
 
prometheus.relabel "integrations_node_exporter" {
  forward_to = [prometheus.remote_write.metrics_service.receiver]
 
  rule {
    source_labels = ["__name__"]
    regex         = "up|node_cpu_seconds_total|node_load1|node_load5|node_load15|node_memory_MemTotal_bytes|node_memory_MemAvailable_bytes|node_memory_MemFree_bytes|node_memory_Buffers_bytes|node_memory_Cached_bytes|node_disk_read_bytes_total|node_disk_written_bytes_total|node_disk_io_time_seconds_total|node_filesystem_size_bytes|node_filesystem_avail_bytes|node_network_receive_bytes_total|node_network_transmit_bytes_total|node_boot_time_seconds|node_context_switches_total|node_intr_total|node_filefd_allocated|node_filefd_maximum|node_os_info|node_uname_info|process_max_fds|process_open_fds"
    action        = "keep"
  }
}
 
// ============================================================
// Systemd Journal Logs
// ============================================================
 
loki.relabel "integrations_node_exporter" {
  forward_to = [loki.write.grafana_cloud_loki.receiver]
 
  rule {
    target_label = "job"
    replacement  = "integrations/node_exporter"
  }
 
  rule {
    target_label = "instance"
    replacement  = constants.hostname
  }
}
 
journal_module "integrations_node_exporter" {
  forward_to = [loki.relabel.integrations_node_exporter.receiver]
}
 
declare "journal_module" {
  argument "forward_to" {
    optional = false
  }
 
  loki.source.journal "default" {
    max_age    = "12h0m0s"
    forward_to = [loki.process.default.receiver]
    relabel_rules = loki.relabel.default.rules
  }
 
  loki.relabel "default" {
    rule {
      source_labels = ["__journal__systemd_unit"]
      target_label  = "unit"
    }
    rule {
      source_labels = ["__journal__boot_id"]
      target_label  = "boot_id"
    }
    rule {
      source_labels = ["__journal__transport"]
      target_label  = "transport"
    }
    rule {
      source_labels = ["__journal_priority_keyword"]
      target_label  = "level"
    }
    forward_to = []
  }
 
  loki.process "default" {
    forward_to = argument.forward_to.value
  }
}