Linux-related collections

本篇 Overview

　　Linux xshell6 connection 

　　Hadoop startup Close

 

Linux xshell6 connection-related issues

　　First, the virtual machine must first be able to pass into the network (specific tutorials Baidu)

　　Then, the local ip query (xshell6 connection key) ==> ip addr

 

　　Finally, the connection xshell6

 

And then connect to

 

 Close attention Hadoop startup items

　Startup and Shutdown must directory in Hadoop, and the need for su hadoop job ahead

　Then in this directory, perform startup and shutdown of Hadoop

　　Start in two steps

　　If the direct use of start-all.sh will lead to many unnecessary bug if you start this, the following tips will not do your best

 　　

. 1 Start- dfs.sh
 2  
. 3 Start- yarn.sh
 . 4  
. 5  # corresponding thereto is closed
 . 6  
. 7 STOP- dfs.sh
 . 8  
. 9 stop-yarn.sh

 

　　　NOTE: operates on the master node oh

 　And then tested on the primary node and sub nodes 

1 jps

　　If such a situation occurs in the following FIG representative of all is well

　The master node           

　Each sub-node     

Note: DataNode NameNode on the master node is, division node

 　　Finally, Baidu master node IP: 50070, the following figure appears on behalf of success

Note: Even if the operation was successful, but also to see if the data is correct, it is very likely the following data are all zero with the situation said