Hadoop novice learning guide introduces concepts, you must understand it before you can proceed to the next step, otherwise you can't understand
http://www.aboutyun.com/thread-6179-1-1.html
Zero basic learning hadoop to get started Work line guidance (primary)
http://www.aboutyun.com/thread-6780-1-1.html
virtual machine installation ubuntu, must understand
http://www.cnblogs.com/zhcncn/p/3987301 .html
(In Ubuntu, you should follow the steps to create a "primary partition" first, and then create a "logical partition", and generally put the swap partition at the end, so the order of the partitions should be:
"/boot" partition (primary partition) - >"/" partition (logical) -> "/home" partition (logical) -> "swap" partition (logical))
Hadoop pseudo-distribution installation process: Hadoop1.x stand-alone environment construction guide
http://www.aboutyun.com /thread-6487
The detailed example of hadoop three-node cluster installation and configuration has pictures and facts. From the picture, how do machines work together?
http://www.aboutyun.com/forum.php?mod=viewthread&tid=6142&highlight=hadoop
Two-way authentication between two machines, knowledge that must be understoodhttp
://www.aboutyun.com/blog-3779-85.html
hadoop2.7. 1 Configuration
http://www.aboutyun.com/thread-7712-1-1.html
Basic concepts of
sshhttp ://www.linuxproblem.org/art_9.html
If your ssh localhost fails, you can reinstall the
command: sudo apt- get remove openssh-client openssh-server
command: sudo apt-get install openssh-client openssh-server
ssh passwordless login
Step 1: Generate a key
$ ssh-keygen -t dsa -f ~/.ssh/id_dsa
Part 2 : Import authorized_keys
$ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
The purpose of the second import is to have no password, etc., so enter the following command:
ssh localhost
result
to see the logged in user, such as me On the master, now I enter ssh slave1, then I am connected to slave1,
although I am still on the master, but the console output is the content of slave1