oVirt prerequisite for Openshift 4.8.x install

This sets of playbooks will setup oVirt networking and a Bastion vm for running OCP 4.8.x IPI installer

Features

• Vlan creation (for OCP internal network)
• Auto template creation for vm (centos 8 cloud)
• Interface and connection name are autodetected
• Bastion vm creation and configuration (using cloud-init)
• Ip reservation for OCP
• Dhcp server for internal network
• Haproxy configuration (listening on bastion public interface)
• Dns listening on the internal network

The bastion vm services are:

• default gateway for openshift nodes connected to the internal network
• dhcp server
• dns server
• haproxy (both api and application)

Name resolutions

The workstation must be able to resolve the bastion vm fqdn for api.<cluster_name>. and *.apps.<cluster_name>. The bastion vm must be able to resolve the oVirt engine fqdn

Sample vars config

file: groups_vars/all/vars.yaml

networking:
  internal_network: 172.22.0.0
  internal_network_ip: 172.22.0.1
  internal_network_netmask: 255.255.255.0
  external_dns: 192.168.1.77
  domain_name: mylab.com

dhcp:
  timezone: "Europe/Rome"
  start: 172.22.0.201
  end: 172.22.0.250
  ntp: 204.11.201.10

bastion:
  name: bastion
  public_ip: 192.168.1.101
  public_netmask: 255.255.255.0
  public_gateway: 192.168.1.1

firewall_services:
  - http
  - dns
  - dhcp

firewall_public_ha_proxy_port:
  - 80/tcp
  - 443/tcp
  - 6443/tcp

ocp:
  reserved_ip:
    api: 172.22.0.2 # Asked during OCP install
    apps: 172.22.0.3 # Asked during OCP install
    internal_dns: 172.22.0.4 # Asked during OCP install
  cluster_name: ocp
  

file: groups_vars/all/ovirt.yaml

ovirt:
  username: admin@internal
  ca_file: /etc/pki/ovirt-engine/ca.pem
  password: XXX
  data_center: Default
  cluster: Default
  host: host.mylab.com
  engine: manager.mylab.com
  storage:
     interface: virtio
     storage_domain: hosted_storage
  network:
    external:
       interface: virtio
       profile: ovirtmgmt
       network: ovirtmgmt
    internal:
       interface: virtio
       profile: ocp
       network: ocp
       host_interface: em2 #Insert oVirt host interface name

Required python packages and version

• ansible==2.9.6

Required roles:

• ovirt.image-template
• ovirt.vm-infra

Ansible collection

• ansible-galaxy collection install ovirt.ovirt

The bastion vm is tested with Centos 8 Cloud

• Get an openshift pullSecret from https://cloud.redhat.com/openshift/install -> Run on RHV
• Set the pullSecret in group_vars/vars.yaml

The interface and connection name are autodetected

• run $ansible-playbook connected_ipi_install.yaml