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How to Install ElasticSearch 7 on cPanel
ElasticSearch is one of the most useful tools for getting fast search working on your site. It is essential on E-commerce platforms like Magento and fortunately it only takes a few minutes to get installed.
This guide is written for AlmaLinux 8 so other distros may need a couple of tweaks
Installing Java and ElasticSearch
The first step to installing ElasticSearch will be to get Java running on your server.
This will get you the latest version of OpenJDK from the default repositories, and will work fine with ElasticSearch 7.
Next we will need to setup the repository for ElasticSearch.
Download the public signing key:
Then create /etc/yum.repos.d/elasticsearch.repo and add the following:
This will then allow you to install and update ElasticSearch using yum
Before you start...
There are a couple of settings that will need to be changed in order to get Elasticsearch working properly on a cPanel install.
The first is to configure your Java temp directory. This can be done by editing the file /etc/elasticsearch/jvm.options
It is also highly recommended to reduce swap usage to encourage Elasticsearch to use RAM rather than excessively using swap space.
That should be it! You are now ready to begin using Elasticsearch, simply enable the service so it begins on reboots and start it.
Verify it is working
You can check your Elasticsearch install has started correctly by viewing the logs at /var/log/elasticsearch/elasticsearch.log or by querying it
This should give the following output