confdroid_alloy/templates/config.alloy.erb

<% if @ay_manage_loki == true -%>

logging{
    level = "info"
    format = "logfmt"
    write_to = [loki.process.alloy.receiver]
}

loki.process "alloy" {
    stage.labels {
        values = {
            service_name = "alloy",
        }
    }
    forward_to = [loki.write.loki.receiver]
}

// Define file discovery for your logs
local.file_match "system_logs" {
  path_targets = [
<% @log_targets_array.each do |target| -%>
    {__path__ = "<%= target %>"},
<% end -%>
  ]
  sync_period = "5s"
}

// Scrape the logs from the matched files
loki.source.file "system_logs" {
  targets    = local.file_match.system_logs.targets
  forward_to = [loki.process.syslog.receiver]
}

loki.process "syslog" {

  stage.static_labels {
    values = {
      fqdn = constants.hostname,
      service = "linux_logs",
    }
  }
    forward_to = [loki.write.loki.receiver]
}

loki.write "loki" {
  endpoint {
    url = "<%= @ay_loki_url %>"
    basic_auth {
      username = "<%= @ay_loki_username %>"
      password = "<%= @ay_loki_userpass %>"
    }
  }
}
<% end -%>
<% if @ay_manage_prom == true -%>
// 1. Exporter (or keep your existing node_exporter binary)
prometheus.exporter.unix "node" {
  // optional: disable unused collectors
  // disable_collectors = ["ipvs", "btrfs", ...]
}

// 2. Relabel the targets so instance = real hostname
discovery.relabel "node_exporter" {
  targets = prometheus.exporter.unix.node.targets

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

  rule {
    target_label = "job"
    replacement  = "integrations/node_exporter"
  }
}

// 3. Scrape the properly labeled targets
prometheus.scrape "node_exporter" {
  targets         = discovery.relabel.node_exporter.output
  forward_to      = [prometheus.remote_write.prometheus.receiver]
  scrape_interval = "15s"
}

prometheus.remote_write "prometheus" {
  endpoint {
    url = "<%= @ay_prom_url %>"
    basic_auth {
      username = "<%= @ay_loki_username %>"
      password = "<%= @ay_loki_userpass %>"
    }
  }
}
<% end %>