部署kubevirt教程

前提条件

已安装：kubernetes集群、kubectl、docker
apt install -y qemu-kvm libvirt virt-install bridge-utils 【所有节点全部安装】

virt-host-validate qemu
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部署kubevirt

下载kubevirt-cr.yaml和kubevirt-operator.yaml
先执行：

Kubectl apply -f kubevirt-operator.yaml
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在执行

Kubectl apply -f kubevirt-cr.yaml
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查看是否部署成功

Kubectl get pods -A
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安装virtctl，virtctl是kubevirt一个命令行工具
Github上搜索，进行下载【下载最新版本】：

cp -p virtctl-v0.58.0-linux-amd64 /usr/bin/virtctl
chmod +x /usr/bin/virtctl/
virtctl --help
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删除Kubectl

kubectl delete -n kubevirt kubevirt kubevirt --wait=true   # --wait=true should anyway be default
kubectl delete apiservices v1.subresources.kubevirt.io   # this needs to be deleted to avoid stuck terminating namespaces
kubectl delete mutatingwebhookconfigurations virt-api-mutator   # not blocking but would be left over
kubectl delete validatingwebhookconfigurations virt-operator-validator   # not blocking but would be left over
kubectl delete validatingwebhookconfigurations virt-api-validator   # not blocking but would be left over
kubectl delete -f kubevirt-operator.yaml --wait=false

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注意：如果您错误地首先删除了运算符，KV自定义资源将卡在Terminating状态，要修复它，请从资源中手动删除终结器。

运行kubevirt-operator.yaml会出现告警：Warning: Detected changes to resource kubevirts.kubevirt.io which is currently being deleted.

运行kubevirt-operator.yaml出现，链接不到kubevirt-operator-webhook。

注意：由于一个错误，需要手动删除apiservice和webhook配置。

kubectl -n kubevirt patch kv kubevirt --type=json -p '[{ "op": "remove", "path": "/metadata/finalizers" }]'
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测试

curl https://kubevirt.io/labs/manifests/vm.yaml
kubectl apply -f https://kubevirt.io/labs/manifests/vm.yaml
kubectl get vm
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启动虚拟机：

virtctl start testvm 
kubectl get vmi
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进入虚拟机

对外发布端口

virtctl expose virtualmachine testvm --name vmiservice --target-port 22 --port 8022 --type NodePort
ssh -p30822 cirros@本地主机IP
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