rmt-server-migration.service fails to start after update

This document (000021182) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server 15 SP4

Situation

After applying patches and checking the failed services.

The command "journalctl -xe" shows:

   A start job for unit rmt-server-migration.service has begun execution.
   
   The job identifier is 21314.
Aug 23 05:05:13 <servername> rails[10684]: rails aborted!
Aug 23 05:05:13 <servername> rails[10684]: NoMethodError: undefined method `username' for nil:NilClass
Aug 23 05:05:13 <servername> rails[10684]: /usr/share/rmt/lib/rmt/config.rb:19:in `db_config'
Aug 23 05:05:13 <servername> rails[10684]: /usr/share/rmt/config/application.rb:42:in `database_configuration'
Aug 23 05:05:13 <servername> rails[10684]: /usr/share/rmt/app/models/application_record.rb:1:in `<top (required)>'
Aug 23 05:05:13 <servername> rails[10684]: /usr/share/rmt/app/models/activation.rb:1:in `<top (required)>'
Aug 23 05:05:13 <servername> rails[10684]: /usr/share/rmt/config/environment.rb:5:in `<top (required)>'
Aug 23 05:05:13 <servername> rails[10684]: /usr/share/rmt/Rakefile:6:in `require_relative'
Aug 23 05:05:13 <servername> rails[10684]: /usr/share/rmt/Rakefile:6:in `<top (required)>'
Aug 23 05:05:13 <servername> rails[10684]: /usr/share/rmt/bin/rails:9:in `<main>'
Aug 23 05:05:13 <servername> rails[10684]: (See full trace by running task with --trace)
Aug 23 05:05:13 <servername> rails[10684]: INFO: RMT version 2.14
Aug 23 05:05:13 <servername> systemd[1]: rmt-server-migration.service: Main process exited, code=exited, status=1/FAILURE

Checking the package is installed as defined it shows "U" for "User ownership differs":

rpm -Vf /etc/rmt.conf
S.5..U.T.  c /etc/rmt.conf

Resolution

Correct the owner permission running following command:

chown _rmt:root /etc/rmt.conf

Cause

File owner has been changed unexpected

Disclaimer

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