OpenShift 4.6 UPI Deployment with Static IPs

Deploy OpenShift 4.6 and later using static IP addresses for CoreOS nodes. The ignition module will inject code into the cluster that will automatically approve all node CSRs. This runs only once at cluster creation. You can delete the ibm-post-deployment namespace once your cluster is up and running.

NOTE: This requires OpenShift 4.6 or later to deploy, if you're looking for 4.5 or earlier, take a look at the pre-4.6 branch

NOTE: Requires terraform 0.13 or later.

Architecture

OpenShift 4.6 User-Provided Infrastructure

Prereqs

1. DNS needs to be configured for external cluster access.
   • api.cluster_id.base_domain points to openshift_api_virtualip
   • *.apps.cluster_id.base_domain points to openshift_ingress_virtualip
   • Point both of those DNS A or CNAME records to your LoadBalancers
2. CoreOS OVA must be uploaded to vCenter as a template.

Installation Process

git clone https://github.com/ibm-cloud-architecture/terraform-openshift4-vmware
cd terraform-openshift4-vmware

Update your terraform.tfvars with your environment values. See terraform.tfvars.example

terraform init
terraform plan
terraform apply

terraform variables

Variable	Description	Type	Default
vsphere_server	FQDN or IP Address of your vSphere Server	string	-
vsphere_user	vSphere username	string	-
vsphere_password	vSphere password	string	-
vsphere_datacenter	vSphere Datacenter where OpenShift will be deployed	string	-
vsphere_cluster	vSphere Cluster where OpenShift will be deployed	string	-
vsphere_datastore	vSphere Datastore for OpenShift nodes	string	-
vm_template	Name of CoreOS OVA template from prereq #2	string	-
vm_network	vSphere Network for OpenShift nodes	string	-
vm_dns_addresses	List of DNS servers to use for your OpenShift Nodes	list	8.8.8.8, 8.8.4.4
vm_gateway	IP Address of default gateway. If not set, defaults to first host in machine_cidr	string	null
cluster_id	This cluster id must be of max length 27 and must have only alphanumeric or hyphen characters.	string	-
base_domain	Base domain for your OpenShift Cluster	string	-
machine_cidr	CIDR for your CoreOS VMs in subnet/mask format.	string	-
bootstrap_ip_address	IP Address for bootstrap node	string	-
control_plane_ip_addresses	List of IP addresses for your control plane nodes	list	-
control_plane_count	Number of control plane VMs to create	string	3
control_plane_memory	Memory, in MB, to allocate to control plane VMs	string	16384
control_plane_num_cpus	Number of CPUs to allocate for control plane VMs	string	4
compute_ip_addresses	List of IP addresses for your compute nodes	list	-
compute_count	Number of compute VMs to create	string	3
compute_memory	Memory, in MB, to allocate to compute VMs	string	8192
compute_num_cpus	Number of CPUs to allocate for compute VMs	string	3
storage_ip_addresses	List of IP addresses for your storage nodes	list	Empty
storage_count	Number of storage VMs to create	string	0
storage_memory	Memory, in MB to allocate to storage VMs	string	65536
storage_num_cpus	Number of CPUs to allocate for storage VMs	string	16
openshift_pull_secret	Path to your OpenShift pull secret	string	-
openshift_cluster_cidr	CIDR for pods in the OpenShift SDN	string	10.128.0.0/14
openshift_service_cidr	CIDR for services in the OpenShift SDN	string	172.30.0.0/16
openshift_host_prefix	Controls the number of pods to allocate to each node from the openshift_cluster_cidr CIDR. For example, 23 would allocate 2^(32-23) 512 pods to each node.	string	23
openshift_version	Version of OpenShift to install. 4.6 or later.	string	4.6
create_openshift_vips	Create the ingressVIP and apiVIP on nodes (same as IPI).	bool	true
openshift_api_virtualip	The IP Address that will be used for the api LoadBalanced endpoint. Must be on the same CIDR range as the master nodes	string	-
openshift_ingress_virtualip	The IP Address that will be used for the *.apps LoadBalanced endpoint. Must be on the same CIDR range as the worker nodes	string	-