Kubernetes : 仮想マシン作成2024/11/06 |
KubeVirt で仮想マシンを作成します。 当例では以下のように 3 台のノードを使用して Kubernetes クラスターを構成しています。 -----------+---------------------------+--------------------------+------------ | | | eth0|10.0.0.30 eth0|10.0.0.51 eth0|10.0.0.52 +----------+-----------+ +-----------+----------+ +-----------+----------+ | [ dlp.srv.world ] | | [ node01.srv.world ] | | [ node02.srv.world ] | | Control Plane | | Worker Node | | Worker Node | +----------------------+ +----------------------+ +----------------------+ |
[1] |
OS イメージを保管するための外部ストレージが必要となります。 |
[2] | OS イメージを保管するために Containerized Data Importer をインストールします。 |
[root@dlp ~]#
export TAG=$(curl -s -w %{redirect_url} https://github.com/kubevirt/containerized-data-importer/releases/latest) [root@dlp ~]# export VERSION=$(echo ${TAG##*/}) [root@dlp ~]# wget https://github.com/kubevirt/containerized-data-importer/releases/download/${VERSION}/cdi-operator.yaml [root@dlp ~]# wget https://github.com/kubevirt/containerized-data-importer/releases/download/${VERSION}/cdi-cr.yaml
[root@dlp ~]#
vi cdi-cr.yaml apiVersion: cdi.kubevirt.io/v1beta1 kind: CDI metadata: name: cdi spec: config: # 下行を追記してメモリーリミットを適当に増やす podResourceRequirements: limits: cpu: '1' memory: 4Gi featureGates: - HonorWaitForFirstConsumer imagePullPolicy: IfNotPresent infra: nodeSelector: kubernetes.io/os: linux tolerations: - key: CriticalAddonsOnly operator: Exists workload: nodeSelector: kubernetes.io/os: linux[root@dlp ~]# kubectl apply -f cdi-operator.yaml namespace/cdi created customresourcedefinition.apiextensions.k8s.io/cdis.cdi.kubevirt.io created clusterrole.rbac.authorization.k8s.io/cdi-operator-cluster created clusterrolebinding.rbac.authorization.k8s.io/cdi-operator created serviceaccount/cdi-operator created role.rbac.authorization.k8s.io/cdi-operator created rolebinding.rbac.authorization.k8s.io/cdi-operator created deployment.apps/cdi-operator created
[root@dlp ~]#
kubectl apply -f cdi-cr.yaml cdi.cdi.kubevirt.io/cdi created # 一定時間経過すると 関連 pod が起動 [root@dlp ~]# kubectl get pods -n cdi NAME READY STATUS RESTARTS AGE cdi-apiserver-55dd9447cb-px9mj 1/1 Running 0 2m29s cdi-deployment-55c6d9fc49-9rx4m 1/1 Running 0 2m29s cdi-operator-7f5bc68fc5-tgprq 1/1 Running 0 2m50s cdi-uploadproxy-5b76f7c876-fh8wx 1/1 Running 0 2m29s |
[3] | 仮想マシンを作成します。当例では Fedora 41 で作成します。 |
[root@dlp ~]# kubectl get sc NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE nfs-client cluster.local/nfs-client-nfs-subdir-external-provisioner Delete Immediate true 30m apiVersion: v1 kind: PersistentVolumeClaim metadata: name: "fedora-pvc" labels: app: containerized-data-importer annotations: cdi.kubevirt.io/storage.import.endpoint: "https://download.fedoraproject.org/pub/fedora/linux/releases/41/Cloud/x86_64/images/Fedora-Cloud-Base-AmazonEC2-41-1.4.x86_64.raw.xz" spec: accessModes: - ReadWriteOnce resources: requests: storage: 15Gi storageClassName: nfs-client
[root@dlp ~]#
[root@dlp ~]# kubectl apply -f fedora-pvc.yml persistentvolumeclaim/fedora-pvc created kubectl get pvc NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS VOLUMEATTRIBUTESCLASS AGE fedora-pvc Bound pvc-f7bcb943-1b3f-42f8-a35b-605ded78ec44 15Gi RWO nfs-client <unset> 9m[root@dlp ~]# kubectl get pods NAME READY STATUS RESTARTS AGE importer-fedora-pvc 1/1 Running 0 14s # 進行状況をログで確認可 [root@dlp ~]# kubectl logs -f importer-fedora-pvc ..... ..... I1106 06:04:15.804515 1 data-processor.go:341] Expanding image size to: 15220080640 E1106 06:04:15.809706 1 prlimit.go:156] failed to kill the process; os: process already finished I1106 06:04:15.809722 1 data-processor.go:253] Validating image E1106 06:04:15.813337 1 prlimit.go:156] failed to kill the process; os: process already finished I1106 06:04:15.816310 1 data-processor.go:247] New phase: Complete I1106 06:04:15.816915 1 importer.go:231] {"scratchSpaceRequired":false,"preallocationApplied":false,"message":"Import Complete"} # データのインポートが終了するとimporter pod も終了 [root@dlp ~]# kubectl get pods No resources found in default namespace. apiVersion: kubevirt.io/v1 kind: VirtualMachine metadata: name: fedora41 labels: kubevirt.io/os: linux spec: running: true template: spec: domain: cpu: cores: 2 devices: disks: - disk: bus: virtio name: disk0 - cdrom: bus: sata readonly: true name: cloudinitdisk machine: type: q35 resources: requests: memory: 4096M volumes: - name: disk0 persistentVolumeClaim: claimName: fedora-pvc - cloudInitNoCloud: userData: | #cloud-config hostname: fedora41 ssh_pwauth: true disable_root: false chpasswd: list: | root:myrootpassword fedora:userpassword expire: False name: cloudinitdisk
[root@dlp ~]#
[root@dlp ~]# kubectl apply -f fedora-vm.yml virtualmachine.kubevirt.io/fedora41 created kubectl get vms NAME AGE STATUS READY fedora41 8s Running True[root@dlp ~]# kubectl get vmi NAME AGE PHASE IP NODENAME READY fedora41 2m49s Running 192.168.40.217 node01.srv.world True [root@dlp ~]# virtctl console fedora41 Successfully connected to fedora41 console. The escape sequence is ^] fedora41 login: root Password: [root@fedora41 ~]# # 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@dlp ~]# ssh fedora@192.168.40.217 The authenticity of host '192.168.40.217 (192.168.40.217)' can't be established. ED25519 key fingerprint is SHA256:eH+Jf4nj0c+OvjGYm+RBtBHc1K3pwYxdjUxvLXjTNAU. This key is not known by any other names. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added '192.168.40.217' (ED25519) to the list of known hosts. fedora@192.168.40.217's password: [fedora@fedora41 ~]$ |
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