hadoop启动时找不到masters和slaves文件

Question

当我配置完启动时，出现：
JIAS-MacBook-Pro:hadoop-0.20.2 jia$ bin/start-all.sh 
starting namenode, logging to /Users/jia/Documents/hadoop-0.20.2/bin/../logs/hadoop-jia-namenode-JIAS-MacBook-Pro.local.out
cat: Documents/hadoop-0.20.2/conf/slaves: No such file or directory
cat: Documents/hadoop-0.20.2/conf/masters: No such file or directory
starting jobtracker, logging to /Users/jia/Documents/hadoop-0.20.2/bin/../logs/hadoop-jia-jobtracker-JIAS-MacBook-Pro.local.out
cat: Documents/hadoop-0.20.2/conf/slaves: No such file or directory这样的错误。而且在浏览器打开不了下面两个页面。怎么回事呢？
http://localhost:50030 (MapReduce的Web页面)
http://localhost:50070 (HDfS的web页面)

Answer 1

在$hadoop_home/conf 文件夹里新增 slaves和master两个文件，里面分别填写你的datanode和namenode节点的host或者ip