1. 如果遇到Hadoop没有启动的情况，先检查

$ jps

1700 Bootstrap

16137 TaskTracker

29691 NameNode

31026 DataNode

6809 Jps

1681 Bootstrap

1662 Manager

32761 JobTracker

如果少了什么就需要启动相应的service. 可以在这里找到 wget http://169.254.169.254/latest/user-data。

service hadoop-namenode start

service hadoop-datanode start

service hadoop-jobtracker start

service hadoop-tasktracker start

service zookeeper-server start

service hbase-master start

service hbase-regionserver start

service hbase-thrift start

 

检查hdfs是否与每个datanode连好，

sudo -u hdfs hadoop dfsadmin -report

sudo -u hdfs hadoop dfsadmin -report | grep Name