Github user vongosling commented on a diff in the pull request:
https://github.com/apache/incubator-rocketmq-site/pull/18#discussion_r120898962
--- Diff: _docs/20-logappender-example.md ---
@@ -0,0 +1,80 @@
+---
+title: "Logappender Example"
+permalink: /docs/logappender-example/
+excerpt: "How to use logappender in RocketMQ."
+modified: 2017-06-08T21:01:43-04:00
+---
+
+{% include toc %}
+
+When we use rocketmq as a part of big data processing or other
cases,bussiness also need to put log data to rocketmq.Rocketmq logappender
provides log4j appender,logback appender and log4j2 appender for bussiness to
use,below is some example.
+
+#### log4j
+
+When using log4j properties config file,config as below.
+
+```
+log4j.appender.mq=org.apache.rocketmq.logappender.log4j.RocketmqLog4jAppender
+log4j.appender.mq.Tag=yourTag
+log4j.appender.mq.Topic=yourLogTopic
+log4j.appender.mq.ProducerGroup=yourLogGroup
+log4j.appender.mq.NameServerAddress=yourRocketmqNameserverAddress
+log4j.appender.mq.layout=org.apache.log4j.PatternLayout
+log4j.appender.mq.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-4r
[%t] (%F:%L) %-5p - %m%n
+```
+
+When using log4j xml config file,config it as this and also add a async
appender:
+
+```
+<appender name="mqAppender1"
class="org.apache.rocketmq.logappender.log4j.RocketmqLog4jAppender">
+ <param name="Tag" value="yourTag" />
--- End diff --
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