安装chukwa时启动collector端失败的解决方法

安装chukwa时，启动collector端失败，查看日志发现报错：

2012-03-21 11:28:20,448 INFO main SeqFileWriter - filesystem type from core-default.xml is org.apache.hadoop.hdfs.DistributedFileSystem

2012-03-21 11:28:20,664 ERROR main SeqFileWriter - can't connect to HDFS, trying default file system instead (likely to be local)

java.lang.NoClassDefFoundError: org/apache/commons/configuration/Configuration

        at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.<init>(DefaultMetricsSystem.java:37)

        at org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.<clinit>(DefaultMetricsSystem.java:34)

        at org.apache.hadoop.security.UgiInstrumentation.create(UgiInstrumentation.java:51)

       通过java.lang.NoClassDefFoundError: org/apache/commons/configuration/Configuration这句，我知道了是缺少库文件，于是从hadoop_home/lib中cp一个commons-configuration-1.6.jar 包过来放到chukwa_home/lib下。

再次启动，问题解决：