Cloudlinux servers that rolled back to snapshot after failed elevate have their channel switched

Symptom

Package updates fail with the following error after an attempted ELevate fails, and the system is rolled back to a snapshot.

Error: Invalid version flag: if

Description

When the system is rolled back, the release channel and cloudlinux-release package remain on CloudLinux 8.

Workaround

1. Access the server's command line as the 'root' user via SSH or "Terminal" in WHM.
2. Install the CloudLinux 7 cloudlinux-release package.

   rpm -Uvh --oldpackage https://repo.cloudlinux.com/cloudlinux/7.9/updates-testing/x86_64/Packages/cloudlinux-release-7.9-2.5.el7.x86_64.rpm

3. Change the release channel to CloudLinux 7.

   /usr/sbin/cln-switch-channel -t 7 -o -f

4. Reregister the server in CLN.

   clnreg_ks --force