Installing ElasticSearch

First of all, this is the official download page where you can find the official documentation to install ES for all systems.

Debian

sudo apt install curl
curl -fsSL https://artifacts.elastic.co/GPG-KEY-elasticsearch | apt-key add - && \
echo "deb https://artifacts.elastic.co/packages/7.x/apt stable main" | tee -a /etc/apt/sources.list.d/elastic-7.x.list && \
apt update && \
apt install -y elasticsearch

ArchLinux

You can get the ES package within the community repo or:

pacman -S elasticsearch

CentOS

You can follow the official installation page

rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
yum install elasticsearch-oss.x86_64

Windows

You can use the official download page to download it or use Chocolatey.

choco install elasticsearch

Configurate ElasticSearch

Set the JVM heap size

The JVM itself requires some memory, so it is normal for ELasticSearch to use more memory than the limit configured with the options below. To set 1GB, - Xms1g and - Xmx1g must be written in jvm.options. It is located in etc/elasticsearch and /config for windows inside the ES installation.

Windows

By default, ES sets the JVM heap size, so it is necessary to modify it using these options:

• Xms
• Xmx

Linux

echo "-Xms1g" >> /etc/elasticsearch/jvm.options
echo "-Xmx1g" >> /etc/elasticsearch/jvm.options

or add these lines to etc/elasticsearch/jvm.options or /configjvm.options:

-Xms1g
-Xmx1g

-XmsAm defines the max allocation of RAM to ES JVM Heap, where A is the amount of MBs that it uses. It is possible to use -XmsAg to specify GBs. It is recommended to use 1GB as the limit. In some cases, it can raise a time out if 256MB/512MB is used.

When the size is set, start the ES service by systemctl start elasticsearch.service or bin/elasticsearch.bat within the ES installation in windows.

Remove ES security warnings

Windows

Add to the elasticsearch.yml within the installation directory /config:

xpack.security.enabled: false

Linux

echo "xpack.security.enabled: false" >> /etc/elasticsearch/elasticsearch.yml