fedya / vzupgrade

A tool for upgrading Vz instances to next major release

vzupgrade tool can be used to upgrade VHS 7 to 8 and CentOS 7 to VzLinux 8.

Normally, the vzupgrade script shouldbe installed via the RPM package from VzLinux repos:

 yum install -y yum-utils
 yum-config-manager --add-repo http://repo.virtuozzo.com/vzlinux/7/x86_64/os/
 yum install -y --nogpgcheck vzupgrade

Make sure to disable the VzLinux repo before real upgrade

 rm -f /etc/yum.repos.d/repo.virtuozzo*

Before running vzupgrade, installall CentOS updates:

 yum update -y

Now run the pre-upgrade check, for CentOS one should use "--skip-vz" option:

 vzupgrade check --skip-vz

If no problems were found, then the upgrade itself:

 vzupgrade install --skip-vz

The system will be rebooted into a special mode (using "Upgrade-initramfs" initrd image). One can specify --reboot option to make this reboot happen automatically.

Once the upgrade is finished, the system will be automatically rebooted once again into upgraded system.