3.2.2 Requirement for Upgrading the Unbreakable Enterprise Kernel

Oracle Linux Container Services for use with Kubernetes 1.1.12 and later versions require that you configure the system to use the Unbreakable Enterprise Kernel Release 5 (UEK R5) and boot the system with this kernel. If you are using either UEK R4 or the Red Hat Compatible Kernel (RHCK), you must configure Yum to allow you to install UEK R5.

  1. If your system is registered with the Unbreakable Linux Network (ULN), disable access to the ol7_x86_64_UEKR4 channel and enable access to the ol7_x86_64_UEKR5 channel.

    If you use the Oracle Linux yum server, disable the ol7_UEKR4 repository and enable the ol7_UEKR5 repository. You can do this easily using yum-config-manager, if you have the yum-utils package installed:

    # yum-config-manager --disable ol7_UEKR4
    # yum-config-manager --enable ol7_UEKR5
  2. Run the following command to upgrade the system to UEK R5:

    # yum update

    For information on how to make UEK R5 the default boot kernel, see Oracle® Linux 7: Administrator's Guide.

  3. Reboot the system, selecting the UEK R5 kernel if this is not the default boot kernel.

    # systemctl reboot