4.2. Converting from CentOS 8

To be eligible for conversion, the system must not be running cPanel and Plesk or have package repositories configured other than official and EPEL.


If conversion fails with “[Errno 24] Too many open files”, try increasing the corresponding limit, which is 1024 by default, and restart the conversion. For example, run ulimit -n 10240 to increase the limit of open files to 10240. It will last until the end of the session.

To convert a CentOS 8 installation to VzLinux 8, do the following:

  1. Log in as the root user.

  2. Download the vzdeploy8 script and mark it as executable:

    # wget http://repo.virtuozzo.com/vzlinux/vzdeploy/vzdeploy8
    # chmod 755 vzdeploy8


    The script is also available at GitHub.

  3. Run the conversion script:

    # ./vzdeploy8

    The script will swap the CentOS repositories with the VzLinux ones and replace the required packages.

  4. Reboot to the VzLinux 8 kernel.