Migrating from CentOS 7
Verifying SELinux State
Running leapp
will set SELinux to permissive
mode during the upgrade in order to carry it out. This should not be an issue for most users. Nevertheless, if you had SELinux enabled in CentOS 7, you might want to have it enabled in AlmaLinux 8. You can check the current SELinux state with the following command:
$ getenforce
If the output of the above command is Enforcing, SELinux is enabled and there is nothing left to do. If not, you can set SELinux to enforcing
mode by editing /etc/selinux/config
and setting the variable SELINUX
within the config file to enforcing
. You then need to reboot your system for the configuration to take effect.
Conclusion
As CentOS's end of life draws near, you are going to need a migration plan for moving forward. ELevate helps you migrate from CentOS to AlmaLinux, or another RHEL-compatible distribution, with relative ease. During testing, I discovered that ELevate could reliably upgrade a CentOS 7 machine, which hosted a Dockerized web application and some EPEL services, using nothing but the steps described in this article (Figure 5).
Your new AlmaLinux 8 install should be able to serve you well until 2029, when it reaches end of life. However, you can upgrade before then using ELevate to move forward to AlmaLinux 9 immediately, which will give you a distribution supported until 2032.
As a community-driven Linux OS, AlmaLinux welcomes contributions to the ELevate project. For more information, see the "Get Involved" box [7].
Get Involved
If you'd like to contribute to ELevate, AlmaLinux has launched the Package Evolution Service (PES). PES collects bug reports and issues from users as well as supplies information on migrating from one RHEL-compatible distribution to another. For more information on how to contribute to PES, see the ELevate Contribution Guide [7].
This article was made possible by support from the AlmaLinux OS Foundation through Linux New Media's Topic Subsidy Program (https://www.linuxnewmedia.com/Topic_Subsidy).
Infos
- CentOS Stream in production use: https://www.redhat.com/en/resources/centos-stream-checklist
- AlmaLinux: https://almalinux.org
- ELevate: https://almalinux.org/elevate/
- Red Hat Leapp: https://www.redhat.com/en/resources/leapp-explained-detail
- EPEL support: https://almalinux.org/blog/2024-01-31-elevate-updates/
- ELevate Frequent Issues: https://wiki.almalinux.org/elevate/ELevate-frequent-issues.html#leapp-upgrade-error-caused-by-important-modules-from-kernel-drivers
- ELevate Contribution Guide: https://wiki.almalinux.org/elevate/Contribution-guide.html
« Previous 1 2
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
Red Hat Adds New Deployment Option for Enterprise Linux Platforms
Red Hat has re-imagined enterprise Linux for an AI future with Image Mode.
-
OSJH and LPI Release 2024 Open Source Pros Job Survey Results
See what open source professionals look for in a new role.
-
Proton 9.0-1 Released to Improve Gaming with Steam
The latest release of Proton 9 adds several improvements and fixes an issue that has been problematic for Linux users.
-
So Long Neofetch and Thanks for the Info
Today is a day that every Linux user who enjoys bragging about their system(s) will mourn, as Neofetch has come to an end.
-
Ubuntu 24.04 Comes with a “Flaw"
If you're thinking you might want to upgrade from your current Ubuntu release to the latest, there's something you might want to consider before doing so.
-
Canonical Releases Ubuntu 24.04
After a brief pause because of the XZ vulnerability, Ubuntu 24.04 is now available for install.
-
Linux Servers Targeted by Akira Ransomware
A group of bad actors who have already extorted $42 million have their sights set on the Linux platform.
-
TUXEDO Computers Unveils Linux Laptop Featuring AMD Ryzen CPU
This latest release is the first laptop to include the new CPU from Ryzen and Linux preinstalled.
-
XZ Gets the All-Clear
The back door xz vulnerability has been officially reverted for Fedora 40 and versions 38 and 39 were never affected.
-
Canonical Collaborates with Qualcomm on New Venture
This new joint effort is geared toward bringing Ubuntu and Ubuntu Core to Qualcomm-powered devices.