Setup latest Elastic Search and Kibana on CentOS7 in April 2022

Imagine this: your boss walks in and says, “We need real-time search and analytics. Yesterday.” You’ve got a CentOS 7 box, and you need Elasticsearch and Kibana running—fast, stable, and secure. Sound familiar? Good. Let’s get straight to business.

Step 1: Prerequisites—Don’t Skip These!

Before you touch Elasticsearch, make sure your server is ready. These steps aren’t optional; skipping them will cost you hours later.

• Set a static IP:
  

  sudo vi /etc/sysconfig/network-scripts/ifcfg-ens3

  Tip: Double-check your network config. A changing IP will break your cluster.

• Set a hostname:
  

  sudo vi /etc/hostname

  Opinion: Use meaningful hostnames. “node1” is better than “localhost”.

• (Optional) Disable the firewall:
  

  sudo systemctl disable firewalld --now

  Gotcha: Only do this in a trusted environment. Otherwise, configure your firewall properly.

• Install Java (Elasticsearch needs it):
  

  sudo yum install java-1.8.0-openjdk.x86_64 -y

  Tip: Elasticsearch 8.x bundles its own JVM, but installing Java never hurts for troubleshooting.

Step 2: Install Elasticsearch 8.x

Ready for the main event? Let’s get Elasticsearch installed and configured.

1. Import the Elasticsearch GPG key:
   

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