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How to install Elasticsearch in Linux Ubuntu server

· 3 min read
Matej Jelluš

I am currently working on three computers and it is real pain to get everything synchronized. Of course I am using git repositories and cloud but I still have to get rid of apache server, databases, etc. So I decided to create Virtual Machine which I save on USB drive and try to do it this way.

The Linux installation with Apache and MySql is not a problem. But I needed to install Elasticsearch ( which runs on Java ) and make it accessible from my computer ( Linux with Elasticsearch is running in VM ).

Installing Java 8​

Add Java repository​

Download the required files from Oracle :

sudo add-apt-repository -y ppa:webupd8team/java

Update :

sudo apt-get update

Install Java​

sudo apt-get install oracle-java8-installer

Check ( verify ) version after installation :

java -version

On the output you should see something like this :

java version "1.8.0_72"
Java(TM) SE Runtime Environment (build 1.8.0_72-b15)
Java HotSpot(TM) 64-Bit Server VM (build 25.72-b15, mixed mode)

Installing ElasticSearch​

Add elastic repository​

wget -qO - https://packages.elastic.co/GPG-KEY-elasticsearch | sudo apt-key add -

Create repository list for Elastic​

echo "deb http://packages.elastic.co/elasticsearch/1.7/debian stable main" | sudo tee -a /etc/apt/sources.list.d/elasticsearch-1.7.list

Update again :

sudo apt-get update

Install Elastic​

sudo apt-get install elasticsearch

Enable Elastic to start automatically​

sudo update-rc.d elasticsearch defaults 95 10

Sample output :

Adding system startup for /etc/init.d/elasticsearch …
/etc/rc0.d/K10elasticsearch -> ../init.d/elasticsearch
/etc/rc1.d/K10elasticsearch -> ../init.d/elasticsearch
/etc/rc6.d/K10elasticsearch -> ../init.d/elasticsearch
/etc/rc2.d/S95elasticsearch -> ../init.d/elasticsearch
/etc/rc3.d/S95elasticsearch -> ../init.d/elasticsearch
/etc/rc4.d/S95elasticsearch -> ../init.d/elasticsearch
/etc/rc5.d/S95elasticsearch -> ../init.d/elasticsearch

Configuration​

Change network host and allow remote connection​

Open Elasticsearch configuration file in your favorite editor, allow and change network.host to localhost. And if you want to connect to Elasticsearch from remote machine you need to enable network.bind_host and set it to 0.

sudo vi /etc/elasticsearch/elasticsearch.yml

Part of my Elasticsearch configuration file :

############################## Network And HTTP ###############################
# Elasticsearch, by default, binds itself to the 0.0.0.0 address, and listens
# on port [9200-9300] for HTTP traffic and on port [9300-9400] for node-to-node
# communication. (the range means that if the port is busy, it will automatically
# try the next port).

# Set the bind address specifically (IPv4 or IPv6):
#
network.bind_host: 0

# Set the address other nodes will use to communicate with this node. If not
# set, it is automatically derived. It must point to an actual IP address.
#
#network.publish_host: 192.168.0.1

# Set both ‘bind_host’ and ‘publish_host’:
#
network.host: localhost

Restart Elasticsearch service​

sudo /etc/init.d/elasticsearch restart

Conclusion​

Now, you should be able to connect and get data from Elasticsearch. Test it with command :

curl -X GET 'http://localhost:9200'

Response :

{
  "status" : 200,
  "name" : "Diablo",
  "cluster_name" : "elasticsearch",
  "version" : {
    "number" : "1.7.5",
    "build_hash" : "00f95f4ffca6de89d68b7ccaf80d148f1f70e4d4",
    "build_timestamp" : "2016-02-02T09:55:30Z",
    "build_snapshot" : false,
    "lucene_version" : "4.10.4"
  },
  "tagline" : "You Know, for Search"
}

Did you like this post? Was it helpful? I am always learning and trying new technologies. When I struggle with something and finally manage to solve it, I share my experience.