Install multiple elasticsearch versions on 12.04

Question

I have two projects using different versions of Elasticsearch, the first uses 0.9.x and the second will use 1.2.x. What would the best way to install both versions so I can work on the two projects?

Answer 1

[Edit 2019-12-11]: Docker is obviously the way to go now!

Answering to myself, I ended with simple installation scripts like that:

#!/bin/bash
sudo apt-get remove elasticsearch
sudo dpkg -i elasticsearch-0.90.5.deb
sudo rm -rf /usr/share/elasticsearch/plugins
sudo cp -R plugins /usr/share/elasticsearch
sudo cp elasticsearch.yml.0.90.5 /etc/elasticsearch/elasticsearch.yml
sudo /etc/init.d/elasticsearch restart
sleep 2;
sudo /etc/init.d/elasticsearch status

Note that in the elasticsearch.yml file, the cluster name must be different to avoid conflicts:

0.9.5:

cluster.name: cluster_v0

1.7.6:

cluster.name: cluster_v1

And so on.

Answer 2

//Get the first ElasticSearch version

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.10.tar.gz

tar -zxf elasticsearch-5.6.10.tar.gz

//Get the second ElasticSearch version you would like to install

wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.8.2.tar.gz

tar -zxf elasticsearch-6.8.2.tar.gz

//Configure the elasticsearch.yml file as follows

vim elasticsearch-5.6.10/config/elasticsearch.yml

cluster.name: elastic_cluster1 
node.name: node-1 
node.master: true 
node.data: true 
transport.host: localhost 
transport.tcp.port: 9300 
http.port: 9200 
network.host: 0.0.0.0

//Configure elasticsearch.yml file for another ES version

vim elasticsearch-6.8.2/config/elasticsearch.yml
cluster.name: elastic_cluster2
node.name: node-2
#node.master: true
node.data: true
transport.host: localhost
transport.tcp.port: 9304
http.port: 9204
network.host: 0.0.0.0

//To start ElasticSearch Services from Terminal

cd elasticsearch-5.6.10
bin/elasticsearch -d


cd elasticsearch-6.8.2
bin/elasticsearch -d

//Verify the status and confirm the service is installed or not

ps -ef | grep elastic