Apache Solr

Accessing Apache Solr

Open in browser: http://<SERVER_IP>:8983

Login:

• Username: user
• Password: stored inside /root/.cloudzy-creds

Retrieve credentials:

cat /root/.cloudzy-creds

Ports and Services

Default exposed ports:

• 0.0.0.0:8983 - Solr Web UI / API
• 127.0.0.1:9983 - Internal ZooKeeper communication
• 127.0.0.1:7983 - Internal Solr communication

Important Files and Directories

• Solr Install Path: /opt/solr
• Credentials File: /root/.cloudzy-creds
• Solr Config: /etc/default/solr.in.sh
• Solr Service: /etc/systemd/system/solr.service
• Solr Data Directory: /var/solr

Managing Apache Solr

Check service status:

systemctl status solr

Restart Solr:

systemctl restart solr

View logs:

journalctl -u solr -f

Stop Solr:

systemctl stop solr

Start Solr:

systemctl start solr

Notes

• Apache Solr runs as a systemd service
• Solr is exposed on port 8983
• ZooKeeper listens locally on port 9983
• Solr startup configuration can be customized in /etc/default/solr.in.sh
• Restart Solr after modifying configuration files or security settings
• Basic authentication is enabled using Solr's built-in authentication system
• Java (OpenJDK) is required and installed automatically