Red Hat build of MicroShift

Apply updates on an RHEL for Edge system

To update MicroShift on Red Hat Enterprise Linux for Edge (RHEL for Edge), embed the new version of MicroShift on a new operating system image.

You cannot downgrade MicroShift with this process. Downgrades other than automatic rollbacks are not supported.

Prerequisites

The system requirements for installing MicroShift have been met.
You have root user access to the host.
The version of MicroShift you have is compatible with the RHEL for Edge image you are preparing to use.

Procedure

Create an image builder configuration file for adding the rhocp-4.20 RPM repository source required to pull MicroShift RPMs by running the following command:

$ cat > rhocp-4.20.toml <<EOF
id = "rhocp-4.20"
name = "Red Hat OpenShift Container Platform 4.20 for RHEL 9"
type = "yum-baseurl"
url = "https://cdn.redhat.com/content/dist/layered/rhel9/$(uname -m)/rhocp/4.20/os"
check_gpg = true
check_ssl = true
system = false
rhsm = true
EOF

Add the update RPM source to the image builder by running the following command:
```
$ sudo composer-cli sources add rhocp-4.20.toml
```
Build a new image of RHEL for Edge that contains the new version of MicroShift. To determine the steps required, use the following documentation:
- Building a commit update
Update the host to use the new image of RHEL for Edge. To determine the steps required, use the following documentation:
- How RHEL for Edge image updates are deployed
Reboot the host to apply updates by running the following command:
```
$ sudo systemctl reboot
```