Install Logstash 5.0 on CentOS 6.8

Steps to install Logstash 5.0 on Centos 6.8

Prerequisite

Logstash 5.0 will require java version 1.8.0_73 you can use either oracle JDK or OpenJDK, you can run this to install OpenJDK version

yum install java-1.8.0-openjdk

Install Logstash

Download and Install Public Signing Key

rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch

Then use the following script to create a file called ELK5.repo on /etc/yum.repos.d and fill it with ELK 5.0 repository information

echo '[ELK-5.x]
name=ELK repository for 5.x packages (Elasticsearch, Kibana, Logstash)
baseurl=https://artifacts.elastic.co/packages/5.x/yum
gpgcheck=1
gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
enabled=1
autorefresh=1
type=rpm-md
' | sudo tee /etc/yum.repos.d/ELK5.repo

then continue to install Logstash

sudo yum install Logstash 

Test Installation

To test your installation you can do the following

/usr/share/logstash/bin/logstash -e 'input { stdin{}} output {stdout{}}'

setting input to stdin means that you want anything you type on keyboard as input, and setting output as stdout means that the output will be displayed on your console. the following is the sample display