https://batmat.net/tags/rhel/ Recent content in rhel on batmat.net Hugo fr-FR Mon, 05 Oct 2015 00:00:00 +0000 https://batmat.net/2015/10/05/upgrading-centos-7-kernel-to-enable-using-overlay-with-docker/ Mon, 05 Oct 2015 00:00:00 +0000 https://batmat.net/2015/10/05/upgrading-centos-7-kernel-to-enable-using-overlay-with-docker/ Context I wanted to use Overlay storage driver for our Docker hosts (see why devicemapper should be avoided in my opinion. ). The issue is: Overlayfs support has been merged in the Linux Kernel in 3.18 and Centos 7 is currently using a 3.10 one .[1]. Upgrade your kernel Hence, since this is not for a customer-facing production machine, I decided to upgrade the kernel. The simplest way to do it is to use ELRepo and install the package called 'kernel-ml' (like in kernel mainline).