confdroid_alloy/templates/config.alloy.erb

<% if @ay_manage_loki == true -%>

logging{
    level = "debug"
    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 -%>
// Metrics collection
prometheus.exporter.unix "system_metrics" {
  include_exporter_metrics = true
  disable_collectors       = ["mdadm"]
}

prometheus.scrape "scrape_system" {
  targets    = prometheus.exporter.unix.system_metrics.targets
  forward_to = [prometheus.remote_write.prometheus.receiver]
  scrape_interval = "15s"
}
<% if @ay_manage_ne == true -%>
prometheus.scrape "node_exporter" {
  targets = [{ __address__ = "localhost:9100" }]
  forward_to = [prometheus.remote_write.prometheus.receiver]
  scrape_interval = "15s"
  relabel_configs = [
    {
      source_labels = [__address__]
      target_label = "instance"
      replacement = "localhost:9100"
    },
    {
      source_labels = [__address__]
      target_label = "job"
      replacement = "node_exporter"
    }
  ]
}
<% end -%>
prometheus.remote_write "prometheus" {
  endpoint {
    url = "<%= @ay_prom_url %>"
    basic_auth {
      username = "<%= @ay_loki_username %>"
      password = "<%= @ay_loki_userpass %>"
    }
  }
}
<% end %>