Kubernetes : Install KubeVirt2024/11/18 |
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Install KubeVirt to deploy fully virtualized virtual machines in Kubernetes Cluster. This example is based on the environment like follows.
+----------------------+ +----------------------+
| [ 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 |
+----------------------+ +----------------------+
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| [1] | Install KubeVirt and virtctl command. |
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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 # after a few minutes, the pods will start up as follows 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] | Create a test VM and verify it works normally. |
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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 # start VM 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 # connect to the console of VM 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: $ # to go back to the Host's console, push Ctrl + ] key # * same operation as virsh command root@ctrl:~# # connect to VM via ssh # user is 'cirros' and password is '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. # stop VM root@ctrl:~# virtctl stop testvm VM testvm was scheduled to stop root@ctrl:~# kubectl get vms NAME AGE STATUS READY testvm 4m30s Stopped False # delete VM root@ctrl:~# kubectl delete vm testvm virtualmachine.kubevirt.io "testvm" deleted root@ctrl:~# kubectl get vms No resources found in default namespace. |
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