Project Description

With CentOS 7 going EoL next year users need an option to move forward and keep receiving updates if needed. SUSE provides a solution to deliver patches to EL Linux for enterprise customers. Also, the restriction to access RHEL 9 codebase, SUSE in partnership with other companies, provided a solution to keep building RHEL alternatives (https://openela.org/).

The goal of this project is to develop a set of stalt states integrated with UYUNI server to help users easily migrate EL Linux flavors to SUSE Liberty Linux solution.

Use cases:

• Register new machine to uyuni and automatically migrate to SUSE Liberty Linux
• Migrate a machine already registered to uyuni

Goal for this Hackweek

Use Uyuni to easily migrate from EL to SLL.

Steps:

• Create a UYUNI/SUMA environment with EL7 and EL9 (can be rhel, centos, rocky, alma ...)
• Register the minions and assigned the channels for the OS in use
• Change the channels to use SLL of the corresponding version (in EL7 it will be SLES-ES)
• Develop salt states to migrate the machine to be a SLES-ES
  • Look at the link which will remove some files and install the release packages

Resources

• https://documentation.suse.com/liberty/9/html/quickstart/art-quickstart.html
  • https://github.com/SUSE/rmt/blob/master/public/tools/rmt-client-setup-res
  • https://github.com/SUSE/rmt/blob/master/public/tools/rmt-client-setup

hack week repo data:

https://github.com/mmmmmmpc/el-2-sll

Status

Migration test status.

• Rhel 9: working
• Rocky 9: working
• Alma 9: working
• Oracle 9: Working
• Rhel 8: Working
• Rocky 8:
• Alma 8: Working
• Oracle 8: Working
• CentoOS 8: working
• Rhel 7:
• CentoOS 7: working
• Oracle 7: working

Day 1

• Focus on registered RHEL9 system in SUMA
• Activation key already assigns the SLL9 repos
• Initial sls file to do all the steps after registration to have the required files removed and the release rpm installed
• Prepared it for RHEL 8 too
• Tested on RHEL9 and it worked
• tested with Rocky 9 to SLL and also worked (hack solution to remove rocky package)

Day 2

• Re-install all packages from SLL channel is now done automatically from the migration salt states
• Hacked change channel option to allow change channels to SLL9 on already registered minions. Useful to migrate existing machines. Code is hardcoded to add the SLL9 base channel - https://github.com/rjmateus/uyuni/tree/uyunihackweek23rhel_migration

Day 3

• Tested Alma Linux 9, Rocky Linux 9, Oracle Linux 9, Oracle Linux 7, and Centos 7
• Starting salt state file and a formula with forms to apply the migration
  • https://github.com/mmmmmmpc/liberate-formula

Day 4

• Finishing testing more OS flavors migration
• Improve code to allow migration of already registered systems
• Cleaning migration formula and adding an option to select if packages should be re-installed