How To Install Apache Solr 8.5 on CentOS/RHEL 7/6

Apache Solr is the open-source, popular, blazing fast open source enterprise search platform from the Apache Lucene project. Apache Solr is written on Java language. Solr is highly scalable, providing fault-tolerant distributed search and indexing, and powers the search and navigation features of many of the world’s largest Internet sites.

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This article will help you to install Apache Solr 8.5 on your server.

Step 1: Install Java

JAVA is the first requirement for Solr establishment. JAVA SE 8 or Later is required to run Apache Solr 8. Utilization taking after order to check in the event that you have Java introduced as of now on your system.

# yum install java-11-openjdk

After installing the Java you can check the version of Java.

# java -version

Step 2: Download & Extract Solr 8.5.1

You can download the latest version of Apache Solr from official website or use the following command to download the Apache Solr.

# cd /opt
# wget https://downloads.apache.org/lucene/solr/8.5.1/solr-8.5.1.tgz

Now we extract tar file using following command:

# tar xzf solr-8.5.1.tgz solr-8.5.1/bin/install_solr_service.sh --strip-components=2

Step 3: Install Apache Solr

Now run the Solr service installer script to setup Solr environment. The command will be like below:

# bash ./install_solr_service.sh solr-8.5.1.tgz

It will create the account with the named of solr on your system. By default Solr port is 8983.

Step 4: Firewall

By default Solr runs on port 8983. If you have an active firewall, allow port 8983.

# firewall-cmd  --permanent --add-port=8983/tcp
# firewall-cmd --reload

Step 5: Manage Solr

Use the following commands to Start and Stop the Solr service.

# service solr start
# service solr Stop

Enable the service at boot time.

# chkconfig solr on

You can check the Solr status using following command.

# service solr status

You can now create your first Solr collection using following command.

# su - solr -c "/opt/solr/bin/solr create -c MyTech -n data_driven_schema_configs"

Sample Output:

Created new core 'MyTech'

Step 6: Access Solr Web Admin Panel

In the wake of beginning Solr, direct your Web program to the Solr Admin Console by using IP Address/Hostname with port.

http://<IP_Address>:8983
OR
http://<Hostname>:8983

The created collections are available on the dashboard from the Collections left panel.

Enjoy it!

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