Added log_level off and log_file definition support

REFERENCE.md

@@ -84,6 +84,7 @@ The following parameters are available in the `fluentbit` class:
 * [`grace`](#-fluentbit--grace)
 * [`daemon`](#-fluentbit--daemon)
 * [`dns_mode`](#-fluentbit--dns_mode)
+* [`log_file`](#-fluentbit--log_file)
 * [`log_level`](#-fluentbit--log_level)
 * [`http_server`](#-fluentbit--http_server)
 * [`http_listen`](#-fluentbit--http_listen)
@@ -361,6 +362,14 @@ Data type: `Enum['UDP', 'TCP']`
 
 Sets the primary transport layer protocol used by the asynchronous DNS resolver.
 
+##### <a name="-fluentbit--log_file"></a>`log_file`
+
+Data type: `Optional[Stdlib::Absolutepath]`
+
+Absolute path where Fluent Bit will write its diagnostic logs.
+When specified, logs go to this file instead of syslog. 
+The file will be created by Fluent Bit automatically.
+
 ##### <a name="-fluentbit--log_level"></a>`log_level`
 
 Data type: `Fluentbit::Loglevel`

manifests/config.pp

@@ -132,6 +132,12 @@
       'hc.period'                           => $fluentbit::hc_period,
     },
   }
+  $log_file_config = $fluentbit::log_file ? {
+    undef           => {},
+    default         => {
+      'log_file'                            => $fluentbit::log_file,
+    },
+  }
 
   $service_config = {
     'flush'                    => $fluentbit::flush,
@@ -146,7 +152,7 @@
     'scheduler.cap'            => $fluentbit::scheduler_cap,
     'scheduler.base'           => $fluentbit::scheduler_base,
     'json.convert_nan_to_null' => $fluentbit::json_convert_nan_to_null,
-  } + $storage_config + $health_config
+  } + $storage_config + $health_config + $log_file_config
 
   if $fluentbit::format == 'classic' {
     $config_content = epp('fluentbit/fluentbit.conf.epp',

manifests/init.pp

@@ -193,9 +193,11 @@
 #   Boolean value to set if Fluent Bit should run as a Daemon (background) or not. Allowed values are: yes, no, on and off.
 # @param dns_mode
 #   Sets the primary transport layer protocol used by the asynchronous DNS resolver.
+# @param log_file
+#   Specify the absolute path to the log file for Fuent Bit service itself
 # @param log_level
 #   Set the logging verbosity level.
-#   Values are: error, info, debug and trace. Values are accumulative,
+#   Values are: off, error, warn, info, debug and trace. Values are accumulative,
 #   e.g: if 'debug' is set, it will include error, info and debug.
 #   Note that trace mode is only available if Fluent Bit was built with the WITH_TRACE option enabled.
 # @param http_server
@@ -298,6 +300,7 @@
   Fluentbit::Stream                $streams           = {},
   Array[Stdlib::Absolutepath]      $plugins           = [],
   Optional[String[1]]              $memory_max        = undef,
+  Optional[Stdlib::Absolutepath]   $log_file          = undef,
   Array[Stdlib::Absolutepath]      $includes          = [],
 ) {
   $pipelines_path = "${config_dir}/${pipelines_dir}"

templates/fluentbit.conf.epp

@@ -9,6 +9,9 @@
     Grace                     <%= $service['grace'] %>
     dns.mode                  <%= $service['dns.mode'] %>
     Log_Level                 <%= $service['log_level'] %>
+<% if $service['log_file'] { %>
+    Log_File                  <%= $service['log_file'] %>
+<% } -%>
     parsers_file              <%= $service['parsers_file'] %>
     plugins_file              <%= $service['plugins_file'] %>
     streams_file              <%= $service['streams_file'] %>

types/loglevel.pp

@@ -1 +1 @@
-type Fluentbit::Loglevel = Enum['error', 'warning', 'info', 'debug', 'trace']
+type Fluentbit::Loglevel = Enum['error', 'warn', 'info', 'debug', 'trace', 'off']