Install Minikube on Centos7

Configure Kubernetes which is Docker Container Orchestration System. On this exmaple, Install Minikube to configure Single Node Cluster within a Virtual machine.

[1]	Because using VM, Install a Hypervisor which is supported by Minikube. On this example, Install KVM. For other Hypervisors, it's possible to use VirtualBox, VMware Fusion, HyperKit.

[root@dlp ~]# yum -y install qemu-kvm libvirt libvirt-daemon-kvm [root@dlp ~]# systemctl start libvirtd [root@dlp ~]# systemctl enable libvirtd

[2]	Configure Kubernetes repository and Install Minikube.

[root@dlp ~]# cat <<'EOF' > /etc/yum.repos.d/kubernetes.repo [kubernetes] name=Kubernetes baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-$basearch enabled=1 gpgcheck=1 repo_gpgcheck=1 gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg EOF [root@dlp ~]# yum -y install kubectl [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: v0.25.2 [root@dlp ~]# kubectl version -o json { "clientVersion": { "major": "1", "minor": "10", "gitVersion": "v1.10.0", "gitCommit": "fc32d2f3698e36b93322a3465f63a14e9f0eaead", "gitTreeState": "clean", "buildDate": "2018-03-26T16:55:54Z", "goVersion": "go1.9.3", "compiler": "gc", "platform": "linux/amd64" } } # start minikube [root@dlp ~]# minikube start --vm-driver kvm2 Starting local Kubernetes v1.9.4 cluster... Starting VM... Downloading Minikube ISO 142.22 MB / 142.22 MB 100.00% 0s Getting VM IP address... Moving files into cluster... Downloading localkube binary 163.02 MB / 163.02 MB 100.00% 0s 65 B / 65 B 100.00% 0s Setting up certs... Connecting to cluster... Setting up kubeconfig... Starting cluster components... Kubectl is now configured to use the cluster. Loading cached images from config file. # show status [root@dlp ~]# minikube status minikube: Running cluster: Running kubectl: Correctly Configured: pointing to minikube-vm at 192.168.39.110 [root@dlp ~]# minikube service list |-------------|----------------------|-----------------------------| | NAMESPACE | NAME | URL | |-------------|----------------------|-----------------------------| | default | kubernetes | No node port | | kube-system | kube-dns | No node port | | kube-system | kubernetes-dashboard | http://192.168.39.110:30000 | |-------------|----------------------|-----------------------------| [root@dlp ~]# minikube docker-env export DOCKER_TLS_VERIFY="1" export DOCKER_HOST="tcp://192.168.39.110:2376" export DOCKER_CERT_PATH="/root/.minikube/certs" export DOCKER_API_VERSION="1.23" # Run this command to configure your shell: # eval $(minikube docker-env) [root@dlp ~]# kubectl cluster-info Kubernetes master is running at https://192.168.39.110:8443 To further debug and diagnose cluster problems, use 'kubectl cluster-info dump'. [root@dlp ~]# kubectl get nodes NAME STATUS ROLES AGE VERSION minikube Ready 1h v1.9.4 # a VM [minikube] is just running [root@dlp ~]# virsh list Id Name State ---------------------------------------------------- 1 minikube running # possible to access with SSH to the VM [root@dlp ~]# minikube ssh _ _ _ _ ( ) ( ) ___ ___ (_) ___ (_)| |/') _ _ | |_ __ /' _ ` _ `\| |/' _ `\| || , < ( ) ( )| '_`\ /'__`\ | ( ) ( ) || || ( ) || || |\`\ | (_) || |_) )( ___/ (_) (_) (_)(_)(_) (_)(_)(_) (_)`\___/'(_,__/'`\____) $ hostname minikube $ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 7d769e956904 fed89e8b4248 "/sidecar --v=2 --..." 3 hours ago Up 3 ho k8s_si.. 39680ff90ecf 459944ce8cc4 "/dnsmasq-nanny -v..." 3 hours ago Up 3 ho k8s_dn.. e568a2ac6088 512cd7425a73 "/kube-dns --domai..." 3 hours ago Up 3 ho k8s_ku.. fd9bd248d82f e94d2f21bc0c "/dashboard --inse..." 3 hours ago Up 3 ho k8s_ku.. f2c59bf5dd0a gcr.io/k8s-minikube/storage-prer "/storage-provisioner" 3 hours ago Up 3 ho k8s_st.. 203ac12b2138 gcr.io/google_containers/pause3.0 "/pause" 3 hours ago Up 3 ho k8s_PO.. 6d88074f01dc gcr.io/google_containers/pause3.0 "/pause" 3 hours ago Up 3 ho k8s_PO.. d44ea81b29f1 gcr.io/google_containers/pause3.0 "/pause" 3 hours ago Up 3 ho k8s_PO.. 3b26e522321b d166ffa9201a "/opt/kube-addons.sh" 3 hours ago Up 3 ho k8s_ku.. 5a0a0833416d gcr.io/google_containers/pause3.0 "/pause" 3 hours ago Up 3 ho k8s_PO.. $ exit # to stop minikube, do like follows [root@dlp ~]# minikube stop Stopping local Kubernetes cluster... Machine stopped. # to remove minikube, do like follows [root@dlp ~]# minikube delete Deleting local Kubernetes cluster... Machine deleted. [root@dlp ~]# virsh list --all Id Name State ----------------------------------------------------