Ansible Automation Red Hat RHEL

Ansible Tower v3.7.1 Install

I will run through the quick install steps for getting Ansible Tower v3.7.1 the latest as of this post up and going in my home lab.

Go a head and install RHEL/CentOS 7 or 8 whatever your personal preference is. I will be installing Ansible Tower in a connected environment on a RHEL 7 VM in this example.

First get your OS installed, configured, and updated. Make sure your hostname is resolvable via DNS as well.

subscription-manager register
subscription-manager attach --pool=<POOLID>
subscription-manager repos --enable rhel-7-server-ansible-2-rpms

yum update -y && yum install wget ansible -y

Download the appropriate installer bundle for your OS from the ansible website repository.

tar -xvf ansible-tower*.tar.gz
cd ansible-tower*/

Now let’s edit the inventory file to configure our deployment type based on the documentation and preference. I will be doing a single node with internal database install for simplicity’s sake.

vi inventory

I will edit the admin_password and pg_password in my inventory file and I am ready to begin the installation process.


After the install has completed we can browser to the hostname of our tower install and you should be prompted to login. Do so with the password you set in your inventory file from the previous step.

Next we will be prompted for our license key. You may sign up for a trial key if you do not already have one by visiting the this link.

Upload your key file or if fully subscribed then use the RHN login box to find your subscription from the customer portal.

Happy Automating!

Linux Red Hat RHEL Satellite

Red Hat Satellite 6.5 -> 6.6 Upgrade

Standard warning do not do this in a production environment, follow official documentation, always make a backup, yadda, yadda, yadda, so on and so forth.

Anyways so I had an install of Red Hat Satellite to manage some of my personal work labs that was running version 6.5.3. In this post I will detail how I upgraded my Satellite install to version 6.6.3.

First let’s check what versions of Satellite are available to us.

sudo foreman-maintain upgrade list-versions

If all goes well we should get available versions of which 6.6 we will be choosing. Next we will want to run a check to make sure all is well before proceeding with our update.

sudo foreman-maintain upgrade check --target-version 6.6

Install any prerequisites you maybe missing and if the check comes back successfully then we may kick off the upgrade process.

sudo foreman-maintain upgrade run --target-version 6.6

Make sure you confirm the upgrade process when prompted to do so. If all goes well run this final command.

sudo hash -d foreman-maintain service 2> /dev/null

You should have a fully upgraded Red Hat Satellite server now running version 6.6!


Containers OpenShift RHEL

OpenShift Origin 3.11 on RHEL 7

OpenShift Origin (OKD) 3.11 on a single node while using RHEL 7 can be a bit different than the CentOS 7 install. In this article I will cover those instructions. We will assume you have installed the latest version of RHEL 7 on your node that you will be deploying on.

From there you will want to log in and update the system after enabling the repos we need.

sudo subscription-manager repos --disable "*"

sudo subscription-manager repos --enable=rhel-7-server-rpms --enable=rhel-7-server-extras-rpms

sudo yum update -y

Next we will install the dependencies we need to continue followed by a reboot.

sudo yum install -y python3-pip python-devel git && sudo yum group install -y "Development Tools" && sudo reboot

Now that we have our dependencies installed and our system up to date we will want to clone the openshift-ansible install from github.

git clone
cd openshift-ansible
git checkout release-3.11

Now we will install the python dependencies using pip we installed earlier.

sudo pip3 install -r requirements.txt

Finally we run the two playbooks needed to deploy the standalone 3.11 version of OpenShift on RHEL 7.

sudo /usr/local/bin/ansible-playbook -i inventory/hosts.localhost playbooks/prerequisites.yml
sudo /usr/local/bin/ansible-playbook -i inventory/hosts.localhost playbooks/deploy_cluster.yml

Enjoy your OpenShift Origin 3.11 test environment on RHEL 7!

Linux RHEL Virtualization

Nested Virtualization on RHV 4.3

While diving into Red Hat virtualization, I wanted to do some nested virtualization on my Intel NUC. In order to do nested virtualization on RHV 4.3 there are a few things you must configure. Please note that this feature is in tech preview currently.

First we need to check to make sure that nested virtualization is enabled on our host node. The Fedora docs have a great page for this.

In order to enable nested virtualization in RHV. You will need to pin the VM that you want to use it on to a particular host and disallow migration of that VM using live migration features. For me since this is a single NUC.

When building a new virtual machine or editing an existing one you will be looking at a screen that looks like the one below. Click on the ‘Host’ tab.

After you click on the host tab you will be looking at a screen similar to the screenshot below. You will want to pin the VM to a particular host, set the migration mode to Allow manual migration only. Once this is completed the Pass-Through Host CPU button will be enabled for use.

Now you will be able to do nested virtualization inside that particular VM. Repeat for any additional VMs you would like to have nested virtualization enabled.

Happy Nesting! – Mike