Kubernetes : KubeVirt インストール2024/11/18 |
|
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。 |
|
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-f97fbdff-4g7br 1/1 Running 0 80s virt-api-f97fbdff-5gjfz 1/1 Running 0 80s virt-controller-6bf9f4477f-5clbv 1/1 Running 0 45s virt-controller-6bf9f4477f-c9qvl 1/1 Running 0 45s virt-handler-66cb2 0/1 Running 0 45s virt-handler-qmctf 0/1 Running 0 45s virt-operator-59f5558dcd-5vl8f 1/1 Running 0 2m8s virt-operator-59f5558dcd-ggn47 1/1 Running 0 2m8s |
| [2] | テスト用の仮想マシンを作成して動作確認します。 |
|
root@ctrl:~#
root@ctrl:~# wget https://raw.githubusercontent.com/kubevirt/kubevirt.github.io/master/labs/manifests/vm.yaml root@ctrl:~# kubectl apply -f vm.yaml virtualmachine.kubevirt.io/testvm created kubectl get vms NAME AGE STATUS READY testvm 4s Stopped False # 仮想マシン起動 root@ctrl:~# virtctl start testvm VM testvm was scheduled to start kubectl get vms NAME AGE STATUS READY testvm 25s Starting Falseroot@ctrl:~# kubectl get vmi NAME AGE PHASE IP NODENAME READY testvm 19m Running 192.168.40.197 node01.srv.world True # 仮想マシンのコンソールに接続 root@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 root@ctrl:~# # 仮想マシンに ssh で接続 # ユーザー名 'cirros', パスワード 'gocubsgo' root@ctrl:~# kubectl get pods NAME READY STATUS RESTARTS AGE virt-launcher-testvm-fkccd 3/3 Running 0 45s
root@ctrl:~#
root@ctrl:~# kubectl port-forward pod/virt-launcher-testvm-fkccd 222:22 &
ssh cirros@localhost -p 222 Handling connection for 222 The authenticity of host '[localhost]:222 ([127.0.0.1]:222)' can't be established. ECDSA key fingerprint is SHA256:qmzNdwMbZZveblDguxJMPZ7lUT+9Tks+8/I8Uy/keFo. 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]:222' (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 root@ctrl:~# virtctl stop testvm VM testvm was scheduled to stop root@ctrl:~# kubectl get vms NAME AGE STATUS READY testvm 4m30s Stopped False # 仮想マシン削除 root@ctrl:~# kubectl delete vm testvm virtualmachine.kubevirt.io "testvm" deleted root@ctrl:~# kubectl get vms No resources found in default namespace. |
| Sponsored Link |