How to add labels with loki.source.syslog

Grafana Alloy
11

can you help me how can i enable syslog ?

prometheus.exporter.self "integrations_alloy" { }

discovery.relabel "integrations_alloy" {
  targets = prometheus.exporter.self.integrations_alloy.targets

  rule {
    target_label = "instance"
    replacement  = constants.hostname
  }

  rule {
    target_label = "alloy_hostname"
    replacement  = constants.hostname
  }

  rule {
    target_label = "job"
    replacement  = "integrations/alloy-check"
  }
}

prometheus.scrape "integrations_alloy" {
  targets    = discovery.relabel.integrations_alloy.output
  forward_to = [prometheus.relabel.integrations_alloy.receiver]  

  scrape_interval = "60s"
}

prometheus.relabel "integrations_alloy" {
  forward_to = [prometheus.remote_write.metrics_service.receiver]

  rule {
    source_labels = ["__name__"]
    regex         = "(prometheus_target_sync_length_seconds_sum|prometheus_target_scrapes_.*|prometheus_target_interval.*|prometheus_sd_discovered_targets|alloy_build.*|prometheus_remote_write_wal_samples_appended_total|process_start_time_seconds)"
    action        = "keep"
  }
}

prometheus.remote_write "metrics_service" {
  endpoint {
    url = "{METRICS_URL}"
  }
}

loki.write "grafana_loki" {
  endpoint {
    url = "{LOGS_URL}"
  }
}

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         = "node_scrape_collector_.+"
    action        = "drop"
  }
}

loki.source.journal "logs_integrations_integrations_node_exporter_journal_scrape" {
  max_age       = "24h0m0s"
  relabel_rules = discovery.relabel.logs_integrations_integrations_node_exporter_journal_scrape.rules
  forward_to    = [loki.write.grafana_loki.receiver]
}

local.file_match "logs_integrations_integrations_node_exporter_direct_scrape" {
  path_targets = [{
    __address__ = "localhost",
    __path__    = "/var/log/{syslog,messages,*.log}",
    instance    = constants.hostname,
    job         = "integrations/node_exporter",
  }]
}

discovery.relabel "logs_integrations_integrations_node_exporter_journal_scrape" {
  targets = []

  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"
  }
}

loki.source.file "logs_integrations_integrations_node_exporter_direct_scrape" {
  targets    = local.file_match.logs_integrations_integrations_node_exporter_direct_scrape.targets
  forward_to = [loki.write.grafana_loki.receiver]
}


loki.source.syslog "LABEL" {
  listener {
    address = "LISTEN_ADDRESS"
  }
  ...

  forward_to = RECEIVER_LIST
}

I have seen this but i am not able to integrate can you please help