Minikube : インストール2021/08/30

シングルノードで Kubernetes クラスターを構成可能な Minikube をインストールします。

[1]	仮想マシンを利用するため、Minikube でサポートするハイパーバイザーをインストールしておきます。当例では KVM をインストールして進めます。その他、VirtualBox, VMware Fusion, HyperKit が利用可能です。

root@dlp:~#

apt -y install qemu-kvm libvirt-daemon-system libvirt-daemon bridge-utils kubernetes-client

[2]	Minikube をインストールします。

root@dlp:~#

wget https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 -O minikube

root@dlp:~#

wget https://storage.googleapis.com/minikube/releases/latest/docker-machine-driver-kvm2

root@dlp:~#

chmod 755 minikube docker-machine-driver-kvm2

root@dlp:~#

mv minikube docker-machine-driver-kvm2 /usr/local/bin/

root@dlp:~#

minikube version

minikube version: v1.22.0
commit: a03fbcf166e6f74ef224d4a63be4277d017bb62e

[3]	Minikube を利用する任意のユーザーを [libvirt] グループに登録しておきます。

root@dlp:~#

usermod -aG libvirt debian

[4]	[libvirt] グループに登録した任意のユーザーで Minikube を起動します。

# minikube 起動

debian@dlp:~$

minikube start --vm-driver=kvm2

* minikube v1.22.0 on Debian 11.0 (kvm/amd64)
* Using the kvm2 driver based on user configuration
* Downloading VM boot image ...
    > minikube-v1.22.0.iso.sha256: 65 B / 65 B [-------------] 100.00% ? p/s 0s
    > minikube-v1.22.0.iso: 242.95 MiB / 242.95 MiB  100.00% 25.87 MiB p/s 9.6s
* Starting control plane node minikube in cluster minikube
* Downloading Kubernetes v1.21.2 preload ...
    > preloaded-images-k8s-v11-v1...: 502.14 MiB / 502.14 MiB  100.00% 30.84 Mi
* Creating kvm2 VM (CPUs=2, Memory=4000MB, Disk=20000MB) ...
* Preparing Kubernetes v1.21.2 on Docker 20.10.6 ...
  - Generating certificates and keys ...
  - Booting up control plane ...
  - Configuring RBAC rules ...
* Verifying Kubernetes components...
  - Using image gcr.io/k8s-minikube/storage-provisioner:v5
* Enabled addons: storage-provisioner, default-storageclass
* Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default

# 状態確認

debian@dlp:~$

minikube status

minikube
type: Control Plane
host: Running
kubelet: Running
apiserver: Running
kubeconfig: Configured

debian@dlp:~$

minikube service list

|-------------|------------|--------------|-----|
|  NAMESPACE  |    NAME    | TARGET PORT  | URL |
|-------------|------------|--------------|-----|
| default     | kubernetes | No node port |
| kube-system | kube-dns   | No node port |
|-------------|------------|--------------|-----|

debian@dlp:~$

minikube docker-env

export DOCKER_TLS_VERIFY="1"
export DOCKER_HOST="tcp://192.168.39.79:2376"
export DOCKER_CERT_PATH="/home/debian/.minikube/certs"
export MINIKUBE_ACTIVE_DOCKERD="minikube"

# To point your shell to minikube's docker-daemon, run:
# eval $(minikube -p minikube docker-env)

debian@dlp:~$

kubectl cluster-info

Kubernetes control plane is running at https://192.168.39.79:8443
CoreDNS is running at https://192.168.39.79:8443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy

To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'.

debian@dlp:~$

kubectl get nodes

NAME       STATUS   ROLES                  AGE    VERSION
minikube   Ready    control-plane,master   2m3s   v1.21.2

# 仮想マシンへ SSH アクセス

debian@dlp:~$

minikube ssh

                         _             _
            _         _ ( )           ( )
  ___ ___  (_)  ___  (_)| |/')  _   _ | |_      __
/' _ ` _ `\| |/' _ `\| || , <  ( ) ( )| '_`\  /'__`\
| ( ) ( ) || || ( ) || || |\`\ | (_) || |_) )(  ___/
(_) (_) (_)(_)(_) (_)(_)(_) (_)`\___/'(_,__/'`\____)

hostname

minikube

docker ps

CONTAINER ID   IMAGE                    COMMAND                  CREATED         STATUS         PORTS     NAMES
8e2ec8bb0f01   6e38f40d628d             "/storage-provisioner"   2 minutes ago   Up 2 minutes             k8s_storage-provisioner_storage-provisioner_kube-system_7be43627-aed8-4b8a-95d7-5ee9c4005edc_0
d88055e658e8   296a6d5035e2             "/coredns -conf /etc…"   2 minutes ago   Up 2 minutes             k8s_coredns_coredns-558bd4d5db-j8fwg_kube-system_fc047f42-8e3e-443e-8f40-8771331f3164_0
1237aa6523f9   a6ebd1c1ad98             "/usr/local/bin/kube…"   2 minutes ago   Up 2 minutes             k8s_kube-proxy_kube-proxy-j8wzl_kube-system_d739dece-7dda-4027-b16a-d6dd76ad2430_0
cad2fdaa69dd   k8s.gcr.io/pause:3.4.1   "/pause"                 2 minutes ago   Up 2 minutes             k8s_POD_storage-provisioner_kube-system_7be43627-aed8-4b8a-95d7-5ee9c4005edc_0
f941baa285b5   k8s.gcr.io/pause:3.4.1   "/pause"                 2 minutes ago   Up 2 minutes             k8s_POD_coredns-558bd4d5db-j8fwg_kube-system_fc047f42-8e3e-443e-8f40-8771331f3164_0
0bc5ce70f1c6   k8s.gcr.io/pause:3.4.1   "/pause"                 2 minutes ago   Up 2 minutes             k8s_POD_kube-proxy-j8wzl_kube-system_d739dece-7dda-4027-b16a-d6dd76ad2430_0
0282edd9826f   f917b8c8f55b             "kube-scheduler --au…"   3 minutes ago   Up 3 minutes             k8s_kube-scheduler_kube-scheduler-minikube_kube-system_a2acd1bccd50fd7790183537181f658e_0
a05d9210b35a   0369cf4303ff             "etcd --advertise-cl…"   3 minutes ago   Up 3 minutes             k8s_etcd_etcd-minikube_kube-system_5d226e339e761597482c6dcc349594b2_0
e542b0875585   106ff58d4308             "kube-apiserver --ad…"   3 minutes ago   Up 3 minutes             k8s_kube-apiserver_kube-apiserver-minikube_kube-system_1f992a1611d681209c3aabfa02c821f1_0
3694d1635647   ae24db9aa2cc             "kube-controller-man…"   3 minutes ago   Up 3 minutes             k8s_kube-controller-manager_kube-controller-manager-minikube_kube-system_533a59bbe1f287c135099b24dd8b3b1c_0
d6f4eeb78d8e   k8s.gcr.io/pause:3.4.1   "/pause"                 3 minutes ago   Up 3 minutes             k8s_POD_kube-scheduler-minikube_kube-system_a2acd1bccd50fd7790183537181f658e_0
6ba9996e93fc   k8s.gcr.io/pause:3.4.1   "/pause"                 3 minutes ago   Up 3 minutes             k8s_POD_kube-apiserver-minikube_kube-system_1f992a1611d681209c3aabfa02c821f1_0
b7b43c3dfb00   k8s.gcr.io/pause:3.4.1   "/pause"                 3 minutes ago   Up 3 minutes             k8s_POD_etcd-minikube_kube-system_5d226e339e761597482c6dcc349594b2_0
e47165e94308   k8s.gcr.io/pause:3.4.1   "/pause"                 3 minutes ago   Up 3 minutes             k8s_POD_kube-controller-manager-minikube_kube-system_533a59bbe1f287c135099b24dd8b3b1c_0

exit

# minikube を停止する場合は以下

debian@dlp:~$

minikube stop

* Stopping node "minikube" ...
* 1 nodes stopped.

# minikube を開始する場合は以下

debian@dlp:~$

minikube start

* minikube v1.22.0 on Debian 11.0 (kvm/amd64)
* Using the kvm2 driver based on existing profile
* Starting control plane node minikube in cluster minikube
* Restarting existing kvm2 VM for "minikube" ...
* Preparing Kubernetes v1.21.2 on Docker 20.10.6 ...
* Verifying Kubernetes components...
  - Using image gcr.io/k8s-minikube/storage-provisioner:v5
* Enabled addons: storage-provisioner, default-storageclass
* Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default

# minikube 仮想マシンを削除する場合は以下

debian@dlp:~$

minikube delete

Deleting local Kubernetes cluster...
Machine deleted.