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+.. index:: ! mmdblookup
+
+MaxMind/GeoIP DB lookup (mmdblookup)
+####################################
+
+================  ==================================
+**Module Name:**  mmdblookup
+**Author:**       `chenryn <rao.chenlin@gmail.com>`_
+**Available:**    8.24
+================  ==================================
+
+**Description**:
+
+MaxMindDB is the new file format for storing information about IP addresses in a highly 
+optimized, flexible database format. GeoIP2 Databases are available in the MaxMind DB format.
+
+Plugin author claimed a MaxMindDB vs GeoIP speed around 4 to 6 times.
+
+Input parameters
+****************
+
+-  **key** - default none
+
+   Name of field containing IP address.
+   
+-  **mmdbfile** - default none
+
+   Location of Maxmind DB file.
+   
+-  **fields** - default none
+
+   Fields that will be appended to processed message.
+
+  
+Examples
+********
+
+::
+
+  # load módule
+  module( load="mmdblookup" )
+
+  action( type="mmdblookup" mmdbfile="/etc/rsyslog.d/GeoLite2-City.mmdb" fields=["!continent!code","!location"] key="!clientip" )
+
+Building
+********
+
+To compile Rsyslog with mmdblookup you'll need to:
+
+* install *libmaxminddb-devel* package
+* set *--enable-mmdblookup* on configure