Setting the Correct Default Kernel for Contrail 2.x Installation on Ubuntu 14.04.2
Contrail 2.x software requires that you install a specific kernel version before you begin the Contrail installation.
For example, after running
fab upgrade_kernel_all on Ubuntu 14.04.2 to upgrade the kernel, the command
uname -a still displays the kernel version as 3.16.0-30-generic, which is the stock kernel version on Ubuntu 14.04.2.
The recommended kernel version for Contrail installations on Ubuntu 14.04.2 is 3.13.0-40-generic.
Since the stock kernel version is higher than the recommended kernel version, the operating system always boots with the stock kernel version even though the recommended kernel is installed.
For each server participating in the Contrail Fabric after running
set the correct default kernel version for Contrail 2.x installation on Ubuntu 14.04.2:
- Within the
grubfile, change the
GRUB_DEFAULT=0 value to:
'Advanced options for Ubuntu>Ubuntu, with Linux 3.13.0-40-generic’
- Enter the following commands to update grub, and reboot the system:
- After all of the servers are back up and running, you can enter the
uname -acommand to verify the kernel version from which the operating system has booted.
- Continue with the Contrail installation process.