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Install Apache Solr on Ubuntu

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Solr is highly reliable, scalable, and fault-tolerant, providing distributed indexing, replication, and load-balanced querying, automated failover and recovery, centralized configuration, and more. Solr powers the search and navigation features of many of the world’s largest internet sites. Solr powers some of the most heavily trafficked websites and applications in the world.

Here we will show you how to install Apache Solr 8.9.0 on Ubuntu 20.04 LTS systems.

First off, you must be able to log in to your ubuntu system and have sudo access. If you have that, let’s get started by upgrading the current packages on your system with the following command.

sudo apt update && sudo apt upgrade

Installing Java

Solr 8 requires Java 8 or greater to run. If you don’t have java installed on your system, use the following command to install it.

sudo apt install openjdk-11-jdk

Now we should verify the active Java version.

$ java -version 


openjdk version "11.0.11" 2021-04-20
OpenJDK Runtime Environment (build 11.0.11+9-Ubuntu-0ubuntu2.20.04)
OpenJDK 64-Bit Server VM (build 11.0.11+9-Ubuntu-0ubuntu2.20.04, mixed mode, sharing)

Install Solr

First, download Solr from its official site or mirrors. Or use the command below to download Apache Solr 8.9.0 on your system.

cd /opt

sudo wget https://downloads.apache.org/lucene/solr/8.9.0/solr-8.9.0.tgz

Now we want to extract the Apache Solr service installer script from the downloaded Solr archive file. Run the installer followed by the archive file as below:

tar xzf solr-8.9.0.tgz solr-8.9.0/bin/install_solr_service.sh --strip-components=2

sudo bash ./install_solr_service.sh solr-8.9.0.tgz

Solr Service

Solr is now configured as a service on your ubuntu server. You can use the following commands to Start, Stop and check the status of the Solr service.

To get the status of the Solr service, type

sudo systemctl status solr

Stop and Start the service with these commands:

sudo systemctl stop solr 

sudo systemctl start solr

Create a Collection in Solr

To create the first collection in Apache Solr using the following command.

sudo su - solr -c "/opt/solr/bin/solr create -c myfirstcollection -n data_driven_schema_configs"

You then should see:

Created new core 'mycollection'

Solr Admin Panel

The default is for Solr to run on port 8983. You can access your Solr service on this port in a browser using your server IP or FQDN.

http://solr.hostappraiser.com:8983/

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