I am getting the "Reboot your system to update the kernel" message in CloudLinux Manager.
- CloudLinux OS 7
1. Check the list of kernels and try booting the last one from the https://cloudlinux.zendesk.com/hc/en-us/articles/115004534329-How-to-choose-the-correct-kernel-to-boot-on-CloudLinux-OS-7-Reboot-your-system-to-update-the-kernel-message-
2. Get a list of currently installed kernels with XYZ, check if the latest one is on a list. If not - reinstall the kernel with:
yum reinstall kernel
The updated kernels had already been installed but there were no boot entries for them.