Dovecot/Solr fails after installing dovecot-solr on Almalinux 10

Symptoms

When installing dovecot-solr on Almalinux 10 both Dovecot and Solr services fail.   

Cause

This appears to occur due to Almalinux not having the java version 11 which the Solr script is configured for.

We've opened an internal case for our development team to investigate this further. For reference, the case number is CPANEL-49976. Follow this article to receive an email notification when a solution is published in the product. 

Resolution

Update the Solr configuration data for jre-21.

1. Log in to SSH as the root user, or use the Terminal in WHM.

2. Modify this file:

   # /etc/sysconfig/cpanel-dovecot-solr

3. Set the contents to match this:

   # SOLR_JAVA_HOME="/usr/lib/jvm/jre-21" 

4. Start Solr:

   # /usr/local/cpanel/scripts/restartsrv_cpanel_dovecot_solr --start