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OpenShift 4 Installation using libvirt & terraform
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OpenShift 4 Installation

Pre-requisites

On your local machine

Install Terraform.

cat > hashicorp.repo <<"EOF"
[hashicorp]
name=Hashicorp Stable - $basearch
baseurl=https://rpm.releases.hashicorp.com/RHEL/8/$basearch/stable
enabled=1
gpgcheck=1
gpgkey=https://rpm.releases.hashicorp.com/gpg
EOF
sudo dnf config-manager --add-repo hashicorp.repo
sudo dnf -y install terraform

Install the libvirt terraform provider.

curl -Lo /tmp/libvirt-provider.tgz https://github.com/dmacvicar/terraform-provider-libvirt/releases/download/v0.6.3/terraform-provider-libvirt-0.6.3+git.1604843676.67f4f2aa.Fedora_32.x86_64.tar.gz
mkdir -p ~/.terraform.d/plugins/registry.terraform.io/dmacvicar/libvirt/0.6.3/linux_amd64
tar xvf /tmp/libvirt-provider.tgz -C ~/.terraform.d/plugins/registry.terraform.io/dmacvicar/libvirt/0.6.3/linux_amd64

Install the Gandi terraform provider.

git clone https://github.com/go-gandi/terraform-provider-gandi
cd terraform-provider-gandi
make
make install

Install the acme terraform provider.

git clone https://github.com/vancluever/terraform-provider-acme
cd terraform-provider-acme
mkdir -p ~/.terraform.d/plugins/vancluever/acme/2.3.0/linux_amd64/
GOBIN=$HOME/.terraform.d/plugins/vancluever/acme/2.3.0/linux_amd64/ make

Create the template files from their samples.

cp terraform.tfvars.sample terraform.tfvars
cp local.env.sample local.env
cp install-config.yaml.sample install-config.yaml

Install the required Ansible collections.

ansible-galaxy collection install -r ansible/requirements.yaml

Initialize Terraform.

terraform init

On the server

Install libvirt.

sudo dnf install libvirt libvirt-daemon-kvm virt-install virt-viewer virt-top libguestfs-tools nmap-ncat

Configure NetworkManager to use dnsmasq. In /etc/NetworkManager/NetworkManager.conf:

[main]
dns=dnsmasq

Download the required images.

curl https://mirror.openshift.com/pub/openshift-v4/dependencies/rhcos/4.9/4.9.0/rhcos-4.9.0-x86_64-qemu.x86_64.qcow2.gz |gunzip -c > /var/lib/libvirt/images/base-images/rhcos-4.9.0-x86_64-qemu.x86_64.qcow2
curl -Lo /var/lib/libvirt/images/base-images/centos-stream-8.qcow2 http://cloud.centos.org/centos/8-stream/x86_64/images/CentOS-Stream-GenericCloud-8-20210210.0.x86_64.qcow2

Install

Initialize a new cluster.

./cluster init my-cluster

Deploy the cluster.

./cluster apply my-cluster

Do the post-install on the cluster.

./cluster post-install my-cluster