Build a single-node Hadoop application environment

Operating system: Ubuntu Server 14.04.3 LTS

STEP1: Add a Hadoop dedicated user (optional, for security reasons), in this case the user name is HM

STEP2: Install related packages:

SSH: This example uses Openssh-server, Openssh-client.

Java: This example uses OPENJDK-7-JDK

Input command

[Email protected]:~$ dpkg-l|grep-e SSH

Used to view the installation status of an SSH package. II represents a successful installation.

If the above package is not already installed, install it using the command apt-get

[Email protected]:~$ apt-get Install Openssh-server
[Email protected]:~$ apt-get Install OPENJDK-7-JDK

Verify the installation and use:

1. JPS-JVM Process viewing tool, to be used in the future to view the Hadoop daemon

[Email protected]:~$ JPS

2. SSH-Standalone password-free login

- F ~/.ssh/Id_dsahm@u14s64: ~$ CD ~/.ssh/HM@u14s64: ~$ cat id_dsa.pub >> Authorized _keyshm@u14s64: ~$ ssh localhost

After successful login, enter exit to exit the current SSH login.

Build a single-node Hadoop application environment