In-place upgrade process is inhibited when the Leapp upgrade tool detects presence of any Network Interface Card (NIC) with a name based on the prefix used by the kernel (eth) and multiple NICs exist on the system (ignoring virtual NICs). Stability of such names can not be guaranteed on...
In case you have multiple kernels installed in the system, you can boot from a specific kernel in case of a downgrade or any other requirement. Let’s see for the purpose of this blog post, how to revert back to an older kernel in CentOS/RHEL 8. Before moving forward, let’s understa...
there is a period of time where it is an actively developedMinor Release. 8.4 is also an eligible Extended Update Support (EUS) release, meaning that in the later part of 2021, when RHEL 8.5 is released, those wishing to remain on RHEL 8.4 can subscribe ...
Update RHEL 7 System Note: Make sure yourRHEL 7system has been successfully registered using theRed Hat Subscription Managerto enable system repositories and perform a full system update. 2.Make sure yourRHEL 7system has theRed Hat Enterprise Linux Server subscriptionattached. If not, run the fol...
$ sudo dnf update Once complete, reboot your system. $ sudo reboot Step 7) Install the leapp-upgrade Tool Next, install the leapp-upgrade tool which will automate the upgrade from RHEL 8 to RHEL 9. $ sudo dnf install leapp-upgrade ...
$ podman run registry.access.redhat.com/ubi8/ubi bash -c 'dnf install --enablerepo=rhel-8-for-x86_64-baseos-eus-rpms kernel-devel-4.18.0-305.34.2.el8_4.x86_64' Updating Subscription Management repositories. Unable to read consumer identity Subscription Manager is operating in container mode...
Step 5: Install the New Kernel Core for CentOS 8 To install a new kernel forCentOS 8, run the command. # dnf -y install kernel-core Install Kernel in CentOS 8 Finally, installCentOS 8minimal package. # dnf -y groupupdate "Core" "Minimal Install" ...
Update GRUB2 using grub2-mkconfig The older method of achieving this behaviour is still possible, but the existingkerneloptsvalue will need to be unset first: bash [root@rhel-8 ~]# grep GRUB_CMDLINE_LINUX /etc/default/grub GRUB_CMDLINE_LINUX="crashkernel=auto resume=/dev/mapper/rhel-swap ...
If the local RHEL server has GUI installed, users can check the OS version in the Settings app: 1. OpenSettings. 2. Select theAboutsection in the menu on the left side. 3. Scroll to theOS Namefield in the About section. The name includes the current OS version number. ...
Edit the/etc/default/grubfile to configure the following parameters: GRUB_TIMEOUT=5 GRUB_DEFAULT=saved GRUB_DISABLE_SUBMENU=true GRUB_TERMINAL_OUTPUT="console" GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=rhel00/root rd.lvm.lv=rhel00/swap rhgb quiet" GRUB_DISABLE_RECOVERY="true" ...