Kubernetes : KubeVirt インストール2025/01/27 |
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KubeVirt をインストールして、Kubernetes クラスターで完全仮想化の仮想マシンを利用できるようにします。 当例では以下のように 4 台のノードを使用して Kubernetes クラスターを構成しています。
+----------------------+ +----------------------+
| [ ctrl.srv.world ] | | [ dlp.srv.world ] |
| Manager Node | | Control Plane |
+-----------+----------+ +-----------+----------+
eth0|10.0.0.25 eth0|10.0.0.30
| |
------------+--------------------------+-----------
| |
eth0|10.0.0.51 eth0|10.0.0.52
+-----------+----------+ +-----------+----------+
| [ node01.srv.world ] | | [ node02.srv.world ] |
| Worker Node#1 | | Worker Node#2 |
+----------------------+ +----------------------+
|
| [1] | KubeVirt と virtctl コマンドをインストールします。 |
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[root@ctrl ~]#
export VERSION=$(curl https://storage.googleapis.com/kubevirt-prow/release/kubevirt/kubevirt/stable.txt) [root@ctrl ~]# wget https://github.com/kubevirt/kubevirt/releases/download/${VERSION}/kubevirt-operator.yaml [root@ctrl ~]# wget https://github.com/kubevirt/kubevirt/releases/download/${VERSION}/kubevirt-cr.yaml [root@ctrl ~]# wget https://github.com/kubevirt/kubevirt/releases/download/${VERSION}/virtctl-${VERSION}-linux-amd64
[root@ctrl ~]#
[root@ctrl ~]# mv virtctl-${VERSION}-linux-amd64 /usr/local/bin/virtctl [root@ctrl ~]# chmod 755 /usr/local/bin/virtctl
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@ctrl ~]#
kubectl apply -f kubevirt-cr.yaml kubevirt.kubevirt.io/kubevirt created # 一定時間経過すると 関連 pod が起動 [root@ctrl ~]# kubectl get pods -n kubevirt NAME READY STATUS RESTARTS AGE virt-api-5f9f64fd4d-kdfn7 1/1 Running 0 2m19s virt-api-5f9f64fd4d-wx8vs 1/1 Running 0 2m19s virt-controller-7c8d6577b6-gj5gd 1/1 Running 0 103s virt-controller-7c8d6577b6-hwsts 1/1 Running 0 103s virt-handler-gxjjd 1/1 Running 0 103s virt-handler-jz5wz 1/1 Running 0 103s virt-operator-79456d8689-h4rhv 1/1 Running 0 3m9s virt-operator-79456d8689-t76t8 1/1 Running 0 3m9s |
| [2] | テスト用の仮想マシンを作成して動作確認します。 |
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[cent@ctrl ~]$
[cent@ctrl ~]$ wget https://raw.githubusercontent.com/kubevirt/kubevirt.github.io/master/labs/manifests/vm.yaml [cent@ctrl ~]$ kubectl apply -f vm.yaml virtualmachine.kubevirt.io/testvm created kubectl get vms NAME AGE STATUS READY testvm 5s Stopped False # 仮想マシン起動 [cent@ctrl ~]$ virtctl start testvm VM testvm was scheduled to start kubectl get vms NAME AGE STATUS READY testvm 51s Running True[cent@ctrl ~]$ kubectl get vmi NAME AGE PHASE IP NODENAME READY testvm 39s Running 192.168.241.144 node02.srv.world True # 仮想マシンのコンソールに接続 [cent@ctrl ~]$ virtctl console testvm Successfully connected to testvm console. The escape sequence is ^] login as 'cirros' user. default password: 'gocubsgo'. use 'sudo' for root. testvm login: cirros Password: $ # ホストのコンソールに戻るには Ctrl + ] キー # * virsh コマンドと同じ操作 [cent@ctrl ~]$ # 仮想マシンに ssh で接続 # ユーザー名 'cirros', パスワード 'gocubsgo' [cent@ctrl ~]$ kubectl get pods NAME READY STATUS RESTARTS AGE virt-launcher-testvm-mhzmb 3/3 Running 0 25s
[cent@ctrl ~]$
[cent@ctrl ~]$ kubectl port-forward pod/virt-launcher-testvm-mhzmb 2220:22 &
ssh cirros@localhost -p 2220 Handling connection for 2220 The authenticity of host '[localhost]:2220 ([::1]:2220)' can't be established. ECDSA key fingerprint is SHA256:e4koRkFIYa6v7GoNl0Dwn7sfQEYzYBZ1XXsOCQ6gsSU. This key is not known by any other names. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added '[localhost]:2220' (ECDSA) to the list of known hosts. cirros@localhost's password: $ $ uname -a Linux testvm 4.4.0-28-generic #47-Ubuntu SMP Fri Jun 24 10:09:13 UTC 2016 x86_64 GNU/Linux $ cat /etc/os-release NAME=Buildroot VERSION=2015.05-g31af4e3-dirty ID=buildroot VERSION_ID=2015.05 PRETTY_NAME="Buildroot 2015.05" $ exit Connection to localhost closed. # 仮想マシン停止 [cent@ctrl ~]$ virtctl stop testvm VM testvm was scheduled to stop [cent@ctrl ~]$ kubectl get vms NAME AGE STATUS READY testvm 7m1s Stopped False # 仮想マシン削除 [cent@ctrl ~]$ kubectl delete vm testvm virtualmachine.kubevirt.io "testvm" deleted [cent@ctrl ~]$ kubectl get vms No resources found in default namespace. |
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