add an example for VirtletLibvirtCPUSetting

Signed-off-by: yanxuean <[email protected]>

examples/ubuntu-vm-with-libvirt-cpusetting.yaml

@@ -0,0 +1,43 @@
+# This example is ubuntu-vm.yaml one extended with cpu setting by libvirt domain definition
+apiVersion: v1
+kind: Pod
+metadata:
+  name: ubuntu-vm-with-nested-virtualization
+  annotations:
+    kubernetes.io/target-runtime: virtlet.cloud
+    VirtletSSHKeys: |
+      ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCaJEcFDXEK2ZbX0ZLS1EIYFZRbDAcRfuVjpstSc0De8+sV1aiu+dePxdkuDRwqFtCyk6dEZkssjOkBXtri00MECLkir6FcH3kKOJtbJ6vy3uaJc9w1ERo+wyl6SkAh/+JTJkp7QRXj8oylW5E20LsbnA/dIwWzAF51PPwF7A7FtNg9DnwPqMkxFo1Th/buOMKbP5ZA1mmNNtmzbMpMfJATvVyiv3ccsSJKOiyQr6UG+j7sc/7jMVz5Xk34Vd0l8GwcB0334MchHckmqDB142h/NCWTr8oLakDNvkfC1YneAfAO41hDkUbxPtVBG5M/o7P4fxoqiHEX+ZLfRxDtHB53 me@localhost
+    # Set VirtletCPUModel to host-model to enable nested virtualization
+    VirtletCPUModel: host-model
+    # Set VirtletLibvirtCPUSetting to directly use cpu definition of libvirt
+    # for "mode": host-model, host-passthrough,custom
+    # for "model": Westmere, SandyBridge, etc.  see file: /usr/local/share/libvirt/cpu_map.xml
+    # The VirtletLibvirtCPUSetting take precedence over VirtletCPUModel.
+    VirtletLibvirtCPUSetting: |
+      mode: custom
+      model:
+        value: Westmere
+      features:
+      - name: avx
+        policy: disable
+spec:
+  affinity:
+    nodeAffinity:
+      requiredDuringSchedulingIgnoredDuringExecution:
+        nodeSelectorTerms:
+        - matchExpressions:
+          - key: extraRuntime
+            operator: In
+            values:
+            - virtlet
+  # This is the number of seconds Virtlet gives the VM to shut down cleanly.
+  # The default value of 30 seconds is ok for containers but probably too
+  # low for VM, so overriding it here is strongly advised.
+  terminationGracePeriodSeconds: 120
+  containers:
+  - name: ubuntu-vm
+    image: virtlet.cloud/cloud-images.ubuntu.com/xenial/current/xenial-server-cloudimg-amd64-disk1.img
+    imagePullPolicy: IfNotPresent
+    # tty and stdin required for `kubectl attach -t` to work
+    tty: true
+    stdin: true