Skip to main content

ElasticSearch Clustering and Backups

ElasticSearch Installation:


The version we want to install is 2.x (latest sub version of 2).

First we have to install java on centOS machine with following command:

sudo yum install java-1.8.0-openjdk.x86_64

Install Public Signing Key:
 

Create new repo in your /etc/yum.repos.d/ directory. For example I have created elasticsearch.repo here.
/etc/yum.repos.d/elasticsearch.repo
--------------------------------------------------------------------------------------------
[elasticsearch-2.x]
name=Elasticsearch repository for 2.x packages
baseurl=http://packages.elastic.co/elasticsearch/2.x/centos
gpgcheck=1
gpgkey=http://packages.elastic.co/GPG-KEY-elasticsearch
enabled=1
---------------------------------------------------------------------------------------------

Now Elasticsearch 2.x will avilable for installation using yum
 
yum install elasticsearch

After installation enable the service at startup.

chkconfig --add elasticsearch

Otherwise if your distribution is using systemd:
 
sudo /bin/systemctl daemon-reload
sudo /bin/systemctl enable elasticsearch.service

Starting service of elasticsearch:

systemctl start elasticsearch

Now we have done with Elasticsearch installation. You can check your default Elasticsearch configuration in /etc/elasticsearch/elasticsearch.yml

Summary of important Elasticsearch Configuration that are to be changed/uncommented:
 
cluster.name: TechnTech
node.name: es-node-1
network.host: 10.0.0.10
http.port: 9200
discovery.zen.ping.unicast.hosts: ["127.0.0.1"]

Restart the elasticsearch service

systemctl restart elasticsearch

Verify the installation by visiting URL: 10.0.0.10:9200

Install Head plugin in ElasticSearch:

Go to ES directory

cd /usr/share/

Enter the following command to install the Head plugin on ElasticSearch.

sudo elasticsearch/bin/plugin install mobz/elasticsearch-head

Install kopf plugin on ElasticSearch:

./elasticsearch/bin/plugin install lmenezes/elasticsearch-kopf/2.0
 
kopf can be used for monitoring and backups of elasticsearch.
 
Backup ElasticSearch with kopf

ElasticSearch Clustering:


Edit the elasticsearch.yml file in /etc/elasticsearch/elasticsearch.yml for enabling the cluster in elasticsearch.
 

Comments

Post a Comment

Popular posts from this blog

Configuring Failover and Load Balancing with HAproxy using Keepalived

Network Scenario: LB1: 192.168.10.10 LB2: 192.168.10.11 Virtual IP: 192.168.10.12 APP_Server1: 192.168.10.20 APP_Server2: 192.168.10.21 Load Balancing: STEP 1 - Install HAProxy: HAProxy package is available under default yum repository for CentOS, Redhat systems. Use the following yum package manager command to install HAProxy on your system.   # yum install haproxy   STEP 2 - Configure HAProxy : Update your HAProxy configuration file /etc/haproxy/haproxy.cfg as per your requirement, You may also use below given configuration file as an example of setup and modify it. Keep the config file same of both servers i.e. LB1 and LB2.   ----------------------------------------------------------------------------------------------------------- global         log /dev/log    local0         log /dev/log    local1 notice     ...
2 comments
Read more

How to configure CentOS Firewalld

Introduction Firewalld is a complete firewall solution available by default on CentOS 7 servers. In this guide, we will cover how to set up a firewall for your server and show you the basics of managing the firewall with the firewall-cmd administrative tool. Basic Concepts in Firewalld Before we begin talking about how to actually use the firewall-cmd utility to manage your firewall configuration, we should get familiar with a few basic concepts that the tool introduces. Zones The firewalld daemon manages groups of rules using entities called "zones". Zones are basically sets of rules dictating what traffic should be allowed depending on the level of trust you have in the networks your computer is connected to. Network interfaces are assigned a zone to dictate the behavior that the firewall should allow. For computers that might move between networks frequently (like laptops), this kind of flexibility provides a good method of changing your ru...
Post a Comment
Read more