Getting a "Solr not available" email alert

Original Question or Issue:

Received an email alert from your FileCloud site saying, "Solr not available". 

Environment:

• Product - FileCloud Server
• Version - Any
• Platform - Any

Steps to Reproduce:

Error or Log Message:

Defect or Enhancement Number:

Cause:

Resolution or Workaround:

• Log in to the node/server hosting your Solr service.
• Make sure that the Solr service is running by checking the service status or using the FileCloud Control panel.
  • FileCloud Control Panel 
    • 
  • Windows Services
    • 
  • Linux Command Line 
    • RHEL 9 - sudo systemctl status httpd
    • Ubuntu  - sudo service apache2 status
• Once it is identified that the Solr service is not running, start the service still using the following methods mentioned above.
  • FileCloud Control Panel
    • 
  • Windows Services
    • 
    •  
  • Linux Command Line
    • RHEL 9 - sudo systemctl start httpd
    • Ubuntu - sudo service apache2 start

Notes:

Refer to this link for other SOLR error codes.