1. Device: Ubuntu image : ubuntu-18.04.2-desktop-amd64.iso
hadoop: hadoop-2.6.5.tar.gz
jdk: jdk-linux-x64.tar.gz
Eclipse: eclipse-java-2020-03-R-linux-gtk-x86_64.tar.gz
2. Install SSH, set SSH passwordless login
1) Update software resource list
$sudo apt-get install update
(If it doesn't work, you can use $ sudo apt install update)
2) Install SSH server
$ sudo apt-get install openssh-server
3) Log in to SSH
$ ssh localhost
4) Log out of ssh localhost
$ exit
5) Check whether the .ssh folder exists under the user (note that there is a "." In front of ssh, which is a hidden folder), enter the command
$ ls -a / home / wangyuyang
6) Create two files id_dsa and id_dsa.pub in the .ssh folder. This is a pair of private and public keys of ssh, similar to keys and locks, append id_da.pub (public key) to the authorized key go with
$ ssh-keygen -t dsa -P '' -f ~/.ssh/id_dsa
7) Add the public key to the public key file used for authentication, where authorized_keys is the public key file used for authentication
$cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
$cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys
8) Verify that ssh has been installed successfully and log in to the machine without a password
$ ssh localhost
9) Exit
$ exit
3. jdk configuration
1) Create the jvm directory under the / usr / lib directory
$ sudo mkdir /usr/lib/jvm
2) Unzip jdk-linux-x64.tar.gz to / usr / lib / jvm
$ sudo tar zxvf jdk-linux-x64.tar.gz -C /usr/lib/jvm
