After an OS upgrade, where is the old my.cnf file on my Plesk server?

[mahesh]

Question

• After an OS upgrade, where is the old my.cnf file on my Plesk server?

Answer
After an upgrade from CentOS to Almalinux, or between Ubuntu versions, for safety purposes a backup file is created with a different extension and the file will be placed in the same folder.

For CentOS > AlmaLinux conversion, the file would be named e.g. my.cnf.rpmnew. More information can be found in the log files /var/log/yum.log or /var/log/dnf.log.

For Ubuntu, the file may be renamed with extension .dpkg-old or .dpkg-dist. More information can be found in the log file /var/log/dpkg.log.