How can I install Elasticsearch on RHEL 8 / CentOS 8 Linux system?. This guide will help you to install Elasticsearch 6 / Elasticsearch 5 on RHEL 8. Elasticsearch is an Open source full-text search and analytics engine tool used to store, search, and analyze big volumes of data in near real time.
For multi-node cluster, refer to Setup Elasticsearch Cluster on CentOS | Ubuntu With Ansible
Step 1: Install Java on RHEL 8 / CentOS 8
As Elasticsearch depends on Java, you need it installed on your system prior to installing Elasticsearch 6 or 5 on RHEL 8.
How to Install Java 11 (OpenJDK 11) on RHEL 8
How to Install Elasticsearch 7/6/5 on RHEL 8 / CentOS 8
For Elasticsearch 7.x, add:
cat <To install Elasticsearch 6 on RHEL 8, add its repository to your system.
cat <For Elasticsearch 5.x, add:
cat <Once the repository is added, clear and update your YUM package index.
sudo yum clean all sudo yum makecache
Elasticsearch 6 repository is ready for use. You can install Elasticsearch using the command below:
sudo yum -y install elasticsearch-oss
Confirm package installation.
$ rpm -qi elasticsearch-oss
Name : elasticsearch
Epoch : 0
Version : 7.4.0
Release : 1
Architecture: x86_64
Install Date: Thu 17 Oct 2019 05:10:43 AM UTC
Group : Application/Internet
Size : 395896718
License : ASL 2.0
Signature : RSA/SHA512, Fri 27 Sep 2019 10:40:01 AM UTC, Key ID d27d666cd88e42b4
Source RPM : elasticsearch-oss-7.4.0-1-src.rpm
Build Date : Fri 27 Sep 2019 08:49:06 AM UTC
Build Host : packer-virtualbox-iso-1553723689
Relocations : /usr
Packager : Elasticsearch
Vendor : Elasticsearch
URL : https://www.elastic.co/
Summary : Elasticsearch is a distributed RESTful search engine built for the cloud. Reference documentation can be found at https://www.elastic.co/guide/en/elasticsearch/reference/current/index.html and the 'Elasticsearch: The Definitive Guide' book can be found at https://www.elastic.co/guide/en/elasticsearch/guide/current/index.html
Description :
Elasticsearch subproject :distribution:packagesYou can set JVM options like memory limits by editing the file: /etc/elasticsearch/jvm.options
Example below sets initial/maximum size of total heap space
-Xms1g
-Xmx1gIf your system has less memory, you can configure it to use small megabytes of ram.
-Xms256m
-Xmx512mStart and enable elasticsearch service on boot:
$ sudo systemctl enable --now elasticsearch.service
Synchronizing state of elasticsearch.service with SysV service script with /usr/lib/systemd/systemd-sysv-install.
Executing: /usr/lib/systemd/systemd-sysv-install enable elasticsearch
Created symlink /etc/systemd/system/multi-user.target.wants/elasticsearch.service → /usr/lib/systemd/system/elasticsearch.service.Test to verify that it is working:
$ curl http://127.0.0.1:9200
"name" : "bBzN5Kg",
"cluster_name" : "elasticsearch",
"cluster_uuid" : "LKyqXXSvRvCpX9QAwKlP2Q",
"version" :
"number" : "6.5.4",
"build_flavor" : "default",
"build_type" : "rpm",
"build_hash" : "d2ef93d",
"build_date" : "2018-12-17T21:17:40.758843Z",
"build_snapshot" : false,
"lucene_version" : "7.5.0",
"minimum_wire_compatibility_version" : "5.6.0",
"minimum_index_compatibility_version" : "5.0.0"
,
"tagline" : "You Know, for Search"
Create a test index:
$ curl -X PUT "http://127.0.0.1:9200/mytest_index"
"acknowledged":true,"shards_acknowledged":true,"index":"mytest_index"Install Kibana on RHEL / CentOS 8
If you need to install Kibana visualization tool, run the command below in your terminal.
sudo yum -y install kibana-ossAfter a successful installation, configure Kibana:
$ sudo vim /etc/kibana/kibana.yml
server.host: "0.0.0.0"
server.name: "kibana.example.com"
elasticsearch.url: "http://localhost:9200"Change other settings as desired then start kibana service:
sudo systemctl enable --now kibanaAccess http://ip-address:5601 to open Kibana Dashboard:
If you have an active firewall, you’ll need to allow access to Kibana port:
sudo firewall-cmd --add-port=5601/tcp --permanent
sudo firewall-cmd --reloadYou now have Elasticsearch 7/6/5 on RHEL / CentOS 8.
