Magento 2 / Server Setup

How to install ElasticSearch for Magento 2 on CentOS/RHEL

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ElasticSearch and Magento 2

ElasticSearch in Magento 2 is not only about search, as the name implies.
It actually speeds up the display of things throughout Magento, e.g. anywhere you browse the catalog, like category pages.
So, for a supporting Magento version, and, if you have adequate RAM available, installing and using ElasticSearch for Magento 2, is a must.

In this short tutorial, I review simple steps on how to set up ElasticSearch in a single-server scenario, on CentOS/RHEL 7 and CentOS/RHEL 8.

Installing ElasticSearch package

The latest Magento, at the time of this writing, supports only the ElasticSearch 7.x series, so this is what we are going to install.

Magento 2.4 docs recommend specifically 7.6.x as being compatible. To install it, run:

sudo yum -y install https://extras.getpagespeed.com/release-latest.rpm
sudo yum -y install elasticsearch

Enable ElasticSearch service by simply running:

sudo systemctl enable --now elasticsearch

Verify it’s running:

curl -XGET 'localhost:9200/_cat/health?v&pretty'

Should yield:

epoch      timestamp cluster       status node.total node.data shards pri relo init unassign pending_tasks max_task_wait_time active_shards_percent
1601396097 16:14:57  elasticsearch yellow          1         1      3   3    0    0        3             0                  -                 50.0%

Configure Elasticsearch within Magento

To configure Magento to use Elasticsearch:

  • Log in to the Magento Admin as an administrator.
  • Click Stores > Settings > Configuration > Catalog > Catalog > Catalog Search.
  • From the Search Engine list, select your Elasticsearch version.

Now, reindex everything:

bin/magento indexer:reindex

Tips

If you want to reset ElasticSearch indexes, here’s a handy command:

curl -X DELETE 'http://localhost:9200/_all'

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