OpenShift 3.6 Virtualization Host Preparation

Internal

• OpenShift 3.6 Installation

Overview

This procedure describes preparatory operations required by the installation of an OpenShift environment on a KVM virtualization host. None of these operations are OpenShift-specific, but they are necessary if OpenShift and support nodes are to be deployed in a KVM virtualization environment.

Procedure

1. Create a directory-based storage pool to maintain the ISO images used in the installation, as described in this procedure. The conventional name of the pool is "iso-images":

virsh # pool-info iso-images
Name:           iso-images
UUID:           e91bb163-c4be-4c1a-9212-70903e407a1c
State:          running
Persistent:     yes
Autostart:      yes
Capacity:       49.98 GiB
Allocation:     11.63 GiB
Available:      38.35 GiB

2. Stage Red Hat Enterprise Linux 7.4 Binary DVD image that will be used to create the guest templates, as file, in /iso-images.

Make sure to use the Binary DVD image, not the Boot ISO or KVM Guest images.

cp /tmp/rhel-server-7.4-x86_64-dvd.iso /iso-images/

3. Create a partition-based storage pool to maintain storage for the virtualization guests, as described in this procedure. It is conventionally named "main-storage-pool". Make sure it has enough space available to accommodate the OpenShift environment's storage needs:

virsh # pool-dumpxml main-storage-pool

<pool type='fs'>
 <name>main-storage-pool</name>
 <uuid>5e3b81b6-a596-404f-a091-ef738dc21df5</uuid>
 <capacity unit='bytes'>938496245760</capacity>
 <allocation unit='bytes'>9520472064</allocation>
 <available unit='bytes'>928975773696</available>
 <source>
   <device path='/dev/sda7'/>
   <format type='auto'/>
 </source>
 <target>
   <path>/main-storage-pool</path>
   <permissions>
     <mode>0755</mode>
     <owner>0</owner>
     <group>0</group>
     <label>system_u:object_r:unlabeled_t:s0</label>
   </permissions>
 </target>
</pool>