CentOS 7.9 installation in 2024
How to install older CentOS 7.9 in 2024: https://www.voxfor.com/how-to-continue-installing-centos/ if you trying to make «yum update» command and got an error like «Could not resolve host: mirrorlist.centos.org; Unknown error» or «Could not retrieve mirrorlist http://mirrorlist.centos.org/»