IT外包之(KOK)kubevirt--Installing KubeVirt on Kubernetes

[root@k8s-master ~]#  virt-host-validate qemu
-bash: virt-host-validate: command not found
[root@k8s-master ~]#

yum -y install libvirt

[root@k8s-master ~]# virt-host-validate qemu
  QEMU: Checking for hardware virtualization                                 : PASS
  QEMU: Checking if device /dev/kvm exists                                   : PASS
  QEMU: Checking if device /dev/kvm is accessible                            : PASS
  QEMU: Checking if device /dev/vhost-net exists                             : PASS
  QEMU: Checking if device /dev/net/tun exists                               : PASS
  QEMU: Checking for cgroup 'cpu' controller support                         : PASS
  QEMU: Checking for cgroup 'cpuacct' controller support                     : PASS
  QEMU: Checking for cgroup 'cpuset' controller support                      : PASS
  QEMU: Checking for cgroup 'memory' controller support                      : PASS
  QEMU: Checking for cgroup 'devices' controller support                     : PASS
  QEMU: Checking for cgroup 'blkio' controller support                       : PASS
  QEMU: Checking for device assignment IOMMU support                         : WARN (No ACPI DMAR table found, IOMMU either disabled in BIOS or not supported by this hardware platform)
  QEMU: Checking for secure guest support                                    : WARN (Unknown if this platform has Secure Guest support)
[root@k8s-master ~]#

[root@k8s-master ~]# cat kubevirt-cr.yaml
---
apiVersion: kubevirt.io/v1
kind: KubeVirt
metadata:
  name: kubevirt
  namespace: kubevirt
spec:
  certificateRotateStrategy: {}
  configuration:
    developerConfiguration:
      useEmulation: true
      featureGates: []
  customizeComponents: {}
  imagePullPolicy: IfNotPresent
  infra:
  workloadUpdateStrategy: {}
[root@k8s-master ~]#
​

[root@k8s-master ~]# export RELEASE=$(curl https://storage.googleapis.com/kubevirt-prow/release/kubevirt/kubevirt/stable.txt)
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100     8  100     8    0     0     10      0 --:--:-- --:--:-- --:--:--    10
[root@k8s-master ~]# kubectl apply -f kubevirt-operator.yaml
namespace/kubevirt created
customresourcedefinition.apiextensions.k8s.io/kubevirts.kubevirt.io created
priorityclass.scheduling.k8s.io/kubevirt-cluster-critical created
clusterrole.rbac.authorization.k8s.io/kubevirt.io:operator created
serviceaccount/kubevirt-operator created
role.rbac.authorization.k8s.io/kubevirt-operator created
rolebinding.rbac.authorization.k8s.io/kubevirt-operator-rolebinding created
clusterrole.rbac.authorization.k8s.io/kubevirt-operator created
clusterrolebinding.rbac.authorization.k8s.io/kubevirt-operator created
deployment.apps/virt-operator created
[root@k8s-master ~]#
[root@k8s-master ~]# kubectl apply -f kubevirt-cr.yaml
kubevirt.kubevirt.io/kubevirt created
[root@k8s-master ~]# kubectl -n kubevirt wait kv kubevirt --for condition=Available
error: timed out waiting for the condition on kubevirts/kubevirt
[root@k8s-master ~]# kubectl edit -n kubevirt kubevirt kubevirt
error: kubevirts.kubevirt.io "kubevirt" could not be patched: Internal error occurred: failed calling webhook "kubevirt-update-validator.kubevirt.io": failed to call webhook: Post "https://kubevirt-operator-webhook.kubevirt.svc:443/kubevirt-validate-update?timeout=10s": dial tcp 10.106.166.169:443: i/o timeout
You can run `kubectl replace -f /tmp/kubectl-edit-3704516472.yaml` to try this update again.
[root@k8s-master ~]#

[root@k8s-master ~]# kubectl get pods -n kubevirt -o wide
NAME                              READY   STATUS    RESTARTS   AGE     IP            NODE         NOMINATED NODE   READINESS GATES
virt-api-68d4b788f7-5zl86         1/1     Running   0          41s     10.244.1.19   k8s-node01   <none>           <none>
virt-api-68d4b788f7-cpngk         1/1     Running   0          41s     10.244.2.19   k8s-node02   <none>           <none>
virt-controller-887fd7878-6f9z9   1/1     Running   0          2m32s   10.244.2.16   k8s-node02   <none>           <none>
virt-controller-887fd7878-wfd5q   1/1     Running   0          2m58s   10.244.1.18   k8s-node01   <none>           <none>
virt-handler-6mghg                1/1     Running   0          3m14s   10.244.1.17   k8s-node01   <none>           <none>
virt-handler-8wv2b                1/1     Running   0          2m31s   10.244.2.17   k8s-node02   <none>           <none>
virt-operator-64675bb658-4vw8n    1/1     Running   0          41s     10.244.2.18   k8s-node02   <none>           <none>
virt-operator-64675bb658-zxvgf    1/1     Running   0          4m19s   10.244.1.16   k8s-node01   <none>           <none>
[root@k8s-master ~]# 

[root@k8s-master ~]# kubectl -n kubevirt wait kv kubevirt --for condition=Available
kubevirt.kubevirt.io/kubevirt condition met
[root@k8s-master ~]#
[root@k8s-master ~]#

apiVersion: v1
kind: Service
metadata:
  name: nginx
  labels:
    app: nginx
spec:
  ports:
  - port: 80
    name: web
  clusterIP: None
  selector:
    app: nginx
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: web
spec:
  selector:
    matchLabels:
      app: nginx # has to match .spec.template.metadata.labels
  serviceName: "nginx"
  replicas: 1 # by default is 1
  minReadySeconds: 10 # by default is 0
  template:
    metadata:
      labels:
        app: nginx # has to match .spec.selector.matchLabels
    spec:
      terminationGracePeriodSeconds: 10
      containers:
      - name: nginx
        image: registry.k8s.io/nginx-slim:0.8
        ports:
        - containerPort: 80
          name: web
        volumeMounts:
        - name: www
          mountPath: /usr/share/nginx/html
  volumeClaimTemplates:
  - metadata:
      name: www
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: "my-storage-class"
      resources:
        requests:
          storage: 1Gi

[root@k8s-master ~]# kubectl apply -f vm.yaml 
Error from server (InternalError): error when creating "vm.yaml": Internal error occurred: failed calling webhook "virtualmachines-mutator.kubevirt.io": failed to call webhook: Post "https://virt-api.kubevirt.svc:443/virtualmachines-mutate?timeout=10s": context deadline exceeded
[root@k8s-master ~]# 

apiVersion: kubevirt.io/v1alpha3
kind: VirtualMachine
metadata:
  labels:
    kubevirt.io/vm: vm-cirros
  name: vm-cirros
spec:
  runStrategy: Always
  template:
    metadata:
      labels:
        kubevirt.io/vm: vm-cirros
    spec:
      domain:
        devices:
          disks:
          - disk:
              bus: virtio
            name: containerdisk
      terminationGracePeriodSeconds: 0
      volumes:
      - containerDisk:
          image: kubevirt/cirros-container-disk-demo:latest
        name: containerdisk