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Demo of RHEL 8.x and 9 for APAC Webinar

Deployment steps for setting up an environment to showcase

  • Cockpit console

  • leapp from RHEL8 → RHEL9

  • Red Hat Insights

  • Cloud hosted Image Builder

  • AWS deployment of an Image Builder generated image.

This leverages the following parts of our core demo environment

Environment deployment

This is the pre-work to setup the initial environment and assumes you’ve completed any of the pre-steps under the links above

sudo VM_NAME=RHEL8x ./deploy_vm.sh create rhel8

sudo VM_NAME=RHEL9 ./deploy_vm.sh create rhel9

Add these hosts into your local ~/.ssh/config for and confirm you have SSH access. Here example entries where you will need to supply the correct IP address for your VMs.

Host rhel9
Hostname 192.168.XXX.YYY
StrictHostKeyChecking no
UserKnownHostsFile /dev/null
User root

Host rhel8x
Hostname 192.168.XXX.ZZZ
StrictHostKeyChecking no
UserKnownHostsFile /dev/null
User root

In addition you’ll require an Ansible inventory file hosts.demo with the following entries

[all]
rhel8x
rhel9

[leapp]
rhel8x

Pull in any of our required roles from Ansible Galaxy

cd ansible

ansible-galaxy  install -r requirements.yaml

Using the webinar-demo playbook make sure our RHEL Hosts

  • have appropriate hostnames

  • are subscribed to RHSM

  • have RH Insights enabled

  • that leapp is installed on the RHEL8 host

  • cockpit is enabled with correct firewall access on our RHEL9 host

ansible-playbook  -i hosts.demo webinar-demo.yaml

Confirm VMs are present in the Insights Cloud Console, and confirm you’re filtering on Data Collector : insights-client

Now perform a preupgrade run of leapp via SSH as our existing ansible playbook doesn’t support RHEL8 → 9 at this stage

ssh root@rhel8x

# Wait for login to complete

dnf check-update
dnf install -y leapp-upgrade cockpit-leapp
systemctl enable --now cockpit.socket
leapp preupgrade --target 9.0

Image Builder Pre-work

We need to define an initial demo tempate we can re-use during the demo.

  • Create a base image live-demo-example with packages httpd and postgresql

    • Target VM and AWS

    • Provide your AWS ID.

Sign into cloud services

Pre-login to to your two cockpit session on rhel8 and rhel9 in addition to

Demo Walkthru

Webconsole / Cockpit

Show off the cockpit console on our RHEL 8 host

  • Overview

  • SSH access

  • upgrade report

Switch to our RHEL9 hosts and use that to jump into Insights

Or alternatively connect to the Insights Cloud Console

Insights / Inventory

  • RHEL9 host

    • Overview → Advisor - We don’t recommend OpenSSH as root anymore

    • Vulnerabilty tab - already resolving new vulnerabilities for RHEL9

      • Click on a recent CVE

  • [Optional] RHEL8X host

    • Overview → Vulnerabilities.

Image Builder & Launch to Cloud

  • Re-create image live-demo-example so we can add additional packages etc.

    • Show we can add additional targets

    • Try to avoid showing our AWS Id

    • Add an additional package - eg tmux

    • Click Create

  • Click on launch instance for an existing built image

    • Show we can leverage the instance easliy via the AWS console

    • Speak to adding to our AWS environment so we can use in multiple regions

Environment Cleanup

I recommend you remove your RHSM and Insights entitlements before deleting any virtual machines

# Clean up all hosts in our inventory
ansible-playbook  -i hosts.demo rhsm_unsubscribe.yaml

# Or for one specific host specify the hostname
ansible-playbook  -i hosts.demo rhsm_unsubscribe.yaml -l rhel8x

Now remove the virtual machines along with the QCOW2 working snapshots

sudo VM_NAME=RHEL8x ./deploy_vm.sh cleanup

sudo VM_NAME=RHEL9 ./deploy_vm.sh cleanup