9.5 KiB
9.5 KiB
OpenShift Workshops
This directory contains a set of scenarios to be used for an OpenShift Virtualisation hackathon and was created for an internal enablement exercise at Red Hat.
Pre-requisites
The hackathon is run by breaking attendees into small teams of 2-4 and assigning each team a bare metal OpenShift 4 cluster with OpenShift Virtualisation already installed.
For our purposes we have clusters running in Equinix Metal provisioned via the Red Hat Demo System.
Cluster setup
Follow the steps below to prepare each cluster in advance of the hackathon.
Automated scenario population
To quickly setup an example environment with all solutions populated you can use the following source blocks.
Exercise two - What about my legacy technical debt?
# Create namespace
oc create namespace crusty-corp
# Create the virtual machine template
#+begin_src tmux
cat << 'EOF' | oc apply --namespace crusty-corp -f -
kind: Template
apiVersion: template.openshift.io/v1
metadata:
name: centos5-server-small
namespace: crusty-corp
labels:
app.kubernetes.io/part-of: hyperconverged-cluster
os.template.kubevirt.io/centos5.0: 'true'
flavor.template.kubevirt.io/small: 'true'
template.kubevirt.io/version: v0.25.0
app.kubernetes.io/version: 4.13.8
template.kubevirt.io/type: base
app.kubernetes.io/component: templating
app.kubernetes.io/managed-by: ssp-operator
template.kubevirt.io/default-os-variant: 'true'
app.kubernetes.io/name: common-templates
workload.template.kubevirt.io/server: 'true'
annotations:
template.kubevirt.io/provider: Red Hat
name.os.template.kubevirt.io/centos5.0: CentOS 5 or higher
template.kubevirt.io/provider-url: 'https://www.centos.org'
template.kubevirt.io/containerdisks: |
quay.io/containerdisks/centos:7-2009
template.kubevirt.io/version: v1alpha1
openshift.io/display-name: CentOS 5 VM
openshift.io/documentation-url: 'https://github.com/kubevirt/common-templates'
template.kubevirt.io/images: >
https://cloud.centos.org/centos/7/images/CentOS-7-x86_64-GenericCloud.qcow2
operator-sdk/primary-resource-type: SSP.ssp.kubevirt.io
defaults.template.kubevirt.io/disk: rootdisk
template.kubevirt.io/editable: |
/objects[0].spec.template.spec.domain.cpu.sockets
/objects[0].spec.template.spec.domain.cpu.cores
/objects[0].spec.template.spec.domain.cpu.threads
/objects[0].spec.template.spec.domain.resources.requests.memory
/objects[0].spec.template.spec.domain.devices.disks
/objects[0].spec.template.spec.volumes
/objects[0].spec.template.spec.networks
template.openshift.io/bindable: 'false'
openshift.kubevirt.io/pronounceable-suffix-for-name-expression: 'true'
operator-sdk/primary-resource: openshift-cnv/ssp-kubevirt-hyperconverged
tags: 'hidden,kubevirt,virtualmachine,linux,centos'
template.kubevirt.io/provider-support-level: Community
description: >-
Template for CentOS 5 VM or newer. A PVC with the CentOS disk image must
be available.
openshift.io/support-url: 'https://github.com/kubevirt/common-templates/issues'
iconClass: icon-centos
openshift.io/provider-display-name: Red Hat
objects:
- apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
annotations:
vm.kubevirt.io/validations: |
[
{
"name": "minimal-required-memory",
"path": "jsonpath::.spec.domain.resources.requests.memory",
"rule": "integer",
"message": "This VM requires more memory.",
"min": 1073741824
}
]
labels:
app: '${NAME}'
vm.kubevirt.io/template: centos5-server-small
vm.kubevirt.io/template.revision: '1'
vm.kubevirt.io/template.version: v0.25.0
name: '${NAME}'
spec:
dataVolumeTemplates:
- apiVersion: cdi.kubevirt.io/v1beta1
kind: DataVolume
metadata:
name: '${NAME}'
spec:
sourceRef:
kind: DataSource
name: '${DATA_SOURCE_NAME}'
namespace: '${DATA_SOURCE_NAMESPACE}'
storage:
resources:
requests:
storage: 30Gi
running: false
template:
metadata:
annotations:
vm.kubevirt.io/flavor: small
vm.kubevirt.io/os: centos5
vm.kubevirt.io/workload: server
labels:
kubevirt.io/domain: '${NAME}'
kubevirt.io/size: small
spec:
domain:
cpu:
cores: 1
sockets: 1
threads: 1
devices:
disks:
- disk:
bus: virtio
name: rootdisk
- disk:
bus: virtio
name: cloudinitdisk
interfaces:
- masquerade: {}
model: virtio
name: default
networkInterfaceMultiqueue: true
rng: {}
machine:
type: pc-q35-rhel9.2.0
resources:
requests:
memory: 2Gi
evictionStrategy: LiveMigrate
networks:
- name: default
pod: {}
terminationGracePeriodSeconds: 180
volumes:
- dataVolume:
name: '${NAME}'
name: rootdisk
- cloudInitNoCloud:
userData: |-
#cloud-config
user: centos
password: ${CLOUD_USER_PASSWORD}
chpasswd: { expire: False }
name: cloudinitdisk
parameters:
- name: NAME
description: VM name
generate: expression
from: 'centos5-[a-z0-9]{16}'
- name: DATA_SOURCE_NAME
description: Name of the DataSource to clone
value: centos5
- name: DATA_SOURCE_NAMESPACE
description: Namespace of the DataSource
value: openshift-virtualization-os-images
- name: CLOUD_USER_PASSWORD
description: Randomized password for the cloud-init user centos
generate: expression
from: '[a-z0-9]{4}-[a-z0-9]{4}-[a-z0-9]{4}'
EOF
# Create the virtual machine from template
cat << 'EOF' | oc apply --namespace crusty-corp -f -
apiVersion: 'kubevirt.io/v1'
kind: 'VirtualMachine'
metadata:
labels:
app: 'crusty-corp-fun-financial-appliance'
vm.kubevirt.io/template: 'centos5-server-small'
vm.kubevirt.io/template.namespace: 'crusty-corp'
vm.kubevirt.io/template.revision: '1'
vm.kubevirt.io/template.version: 'v0.25.0'
name: 'crusty-corp-fun-financial-appliance'
namespace: 'crusty-corp'
spec:
dataVolumeTemplates:
- apiVersion: 'cdi.kubevirt.io/v1beta1'
kind: 'DataVolume'
metadata:
annotations:
cdi.kubevirt.io/storage.bind.immediate.requested: 'true'
creationTimestamp: null
name: 'crusty-corp-fun-financial-appliance'
spec:
source:
blank: {}
storage:
resources:
requests:
storage: '30Gi'
- metadata:
creationTimestamp: null
name: 'crusty-corp-fun-financial-appliance-installation-cdrom'
spec:
source:
http:
url: 'https://vault.centos.org/5.11/isos/x86_64/CentOS-5.11-x86_64-netinstall.iso'
storage:
resources:
requests:
storage: '5Gi'
running: false
template:
metadata:
annotations:
vm.kubevirt.io/flavor: 'small'
vm.kubevirt.io/os: 'centos5'
vm.kubevirt.io/workload: 'server'
creationTimestamp: null
labels:
kubevirt.io/domain: 'crusty-corp-fun-financial-appliance'
kubevirt.io/size: 'small'
spec:
domain:
cpu:
cores: 1
sockets: 1
threads: 1
devices:
disks:
- bootOrder: 2
disk:
bus: 'virtio'
name: 'rootdisk'
- bootOrder: 3
disk:
bus: 'virtio'
name: 'cloudinitdisk'
- bootOrder: 1
cdrom:
bus: 'sata'
name: 'installation-cdrom'
interfaces:
- macAddress: '02:d5:73:00:00:06'
masquerade: {}
model: 'virtio'
name: 'default'
networkInterfaceMultiqueue: true
rng: {}
machine:
type: 'pc-q35-rhel9.2.0'
resources:
requests:
memory: '2Gi'
evictionStrategy: 'LiveMigrate'
networks:
- name: 'default'
pod: {}
terminationGracePeriodSeconds: 180
volumes:
- dataVolume:
name: 'crusty-corp-fun-financial-appliance'
name: 'rootdisk'
- cloudInitNoCloud:
userData: "#cloud-config\nuser: centos\npassword: cqud-lhel-rd0b\nchpasswd: { expire: False }"
name: 'cloudinitdisk'
- dataVolume:
name: 'crusty-corp-fun-financial-appliance-installation-cdrom'
name: 'installation-cdrom'
EOFAutomated scenario cleanup
If you need to quickly reset an example environment to have no solutions populated you can use the following source blocks.
oc delete namespace crusty-corp