This is the known issue for cyber panel when you try to install on centOS7
warning: /var/cache/yum/x86_64/7/CyberPanel/packages/perl-Git-2.17.0-1.el7.lux.noarch.rpm: Header V4 DSA/SHA1 Signature, key ID 53e4e7a9: NOKEY
Retrieving key from https://rep.cyberpanel.net/RPM-GPG-KEY-cyberpanel
The GPG keys listed for the "CyberPanel" repository are already installed but they are not correct for this package.
Check that the correct key URLs are configured for this repository.
Failing package is: perl-Git-2.17.0-1.el7.lux.noarch
to fix this
you need to disable the cyberpanel repo
login as root to your server
nano /etc/yum.repos.d/CyberPanel.repo
change gpgcheck=1 to gpgcheck=0
chattr +i /etc/yum.repos.d/CyberPanel.repo
then try again to install
after installation if you wish to release the file again
chattr -i /etc/yum.repos.d/CyberPanel.repo