Installing ElasticSearch

Installing ElasticSearch

First of all, this is the official download page.

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

pacman -S elasticsearch

CentOS

yum install elasticsearch-oss.x86_64

Windows

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

choco install elasticsearch

Set the JVM heap size

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

• Xms
• Xmx

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 must be written in jvm.options. It is located in etc/elasticsearch and /config for windows inside ES installation.

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 you want. You can also use -XmsAg if you mean GBs. It is recommended to use 1GB as the limit. In some cases, we cant get a time out if we use 256MB/512MB.

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