Kubernetes/minikube
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Features v1.2.0
- LoadBalancer - using
minikube tunnel - Multi-cluster - using
minikube start -p <name> - NodePorts - using
minikube service - Persistent Volumes
- Ingress
- RBAC
- Dashboard -
minikube dashboard - Container runtimes -
start --container-runtime - Configure apiserver and kubelet options via command-line flags
Install on Linux
curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 && sudo install minikube-linux-amd64 /usr/local/bin/minikube
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 39.8M 100 39.8M 0 0 160k 0 0:04:14 0:04:14 --:--:-- 174k
Start
Example of start sequence
minikube start 😄 minikube v1.2.0 on linux (amd64) 🔥 Creating virtualbox VM (CPUs=2, Memory=2048MB, Disk=20000MB) ... 🐳 Configuring environment for Kubernetes v1.15.0 on Docker 18.09.6 E0728 00:14:31.657125 26453 start.go:403] Error caching images: Caching images for kubeadm: caching images: caching image /home/user1/.minikube/cache/images/k8s.gcr.io/k8s-dns-kube-dns-amd64_1.14.13: stream error: stream ID 25; INTERNAL_ERROR ❌ Unable to load cached images: loading cached images: loading image /home/pipaw/.minikube/cache/images/k8s.gcr.io/k8s-dns-sidecar-amd64_1.14.13: stat /home/user1/.minikube/cache/images/k8s.gcr.io/k8s-dns-sidecar-amd64_1.14.13: no such file or directory 💾 Downloading kubeadm v1.15.0 💾 Downloading kubelet v1.15.0 🚜 Pulling images ... 🚀 Launching Kubernetes ... ⌛ Verifying: apiserver proxy etcd scheduler controller dns 🏄 Done! kubectl is now configured to use "minikube" $ minikube status host: Running kubelet: Running apiserver: Running kubectl: Correctly Configured: pointing to minikube-vm at 192.168.99.101 $ kubectl get nodes -o wide NAME STATUS ROLES AGE VERSION INTERNAL-IP EXTERNAL-IP OS-IMAGE KERNEL-VERSION CONTAINER-RUNTIME minikube Ready master 8h v1.15.0 10.0.2.15 <none> Buildroot 2018.05.3 4.15.0 docker://18.9.6 $ kubectl get all -o wide --all-namespaces NAMESPACE NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES kube-system pod/coredns-5c98db65d4-d688k 1/1 Running 0 8h 172.17.0.2 minikube <none> <none> kube-system pod/coredns-5c98db65d4-xdq6d 1/1 Running 0 8h 172.17.0.3 minikube <none> <none> kube-system pod/etcd-minikube 1/1 Running 0 8h 10.0.2.15 minikube <none> <none> kube-system pod/kube-addon-manager-minikube 1/1 Running 0 8h 10.0.2.15 minikube <none> <none> kube-system pod/kube-apiserver-minikube 1/1 Running 0 8h 10.0.2.15 minikube <none> <none> kube-system pod/kube-controller-manager-minikube 1/1 Running 0 8h 10.0.2.15 minikube <none> <none> kube-system pod/kube-proxy-j5f2h 1/1 Running 0 8h 10.0.2.15 minikube <none> <none> kube-system pod/kube-scheduler-minikube 1/1 Running 0 8h 10.0.2.15 minikube <none> <none> kube-system pod/storage-provisioner 1/1 Running 0 8h 10.0.2.15 minikube <none> <none> NAMESPACE NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE SELECTOR default service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 8h <none> kube-system service/kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP,9153/TCP 8h k8s-app=kube-dns NAMESPACE NAME DESIRED CURRENT READY UP-TO-DATE AVAILABLE NODE SELECTOR AGE CONTAINERS IMAGES SELECTOR kube-system daemonset.apps/kube-proxy 1 1 1 1 1 beta.kubernetes.io/os=linux 8h kube-proxy k8s.gcr.io/kube-proxy:v1.15.0 k8s-app=kube-proxy NAMESPACE NAME READY UP-TO-DATE AVAILABLE AGE CONTAINERS IMAGES SELECTOR kube-system deployment.apps/coredns 2/2 2 2 8h coredns k8s.gcr.io/coredns:1.3.1 k8s-app=kube-dns NAMESPACE NAME DESIRED CURRENT READY AGE CONTAINERS IMAGES SELECTOR kube-system replicaset.apps/coredns-5c98db65d4 2 2 2 8h coredns k8s.gcr.io/coredns:1.3.1 k8s-app=kube-dns,pod-template-hash=5c98db65d4
Usage
time minikube start #start a cluster by running time minikube start --kubernetes-version v1.15.0 # AWS versions 1.13.7,1.12.6 minikube dashboard #access Kubernetes Dashboard within Minikube #Use kubectl to interact with the local cluster kubectl run hello-minikube --image=k8s.gcr.io/echoserver:1.4 --port=8080 kubectl expose deployment hello-minikube --type=NodePort #Exposing a service as a NodePort #minikube makes it easy to open this exposed endpoint in your browser minikube service hello-minikube #Start a second local cluster: minikube start -p cluster2 minikube stop #stop your local cluster minikube delete #delete your local cluster
Working with profiles
$ ls -1 ~/.minikube/profiles/ #list all profiles aws-v1.13.7-cluster minikube #default profile
jq .MachineConfig config.json
|
jq .KubernetesConfig config.json
|
|---|---|
{
"KubernetesVersion": "v1.13.7",
"NodeIP": "192.168.99.102",
"NodePort": 8443,
"NodeName": "minikube",
"APIServerName": "minikubeCA",
"APIServerNames": null,
"APIServerIPs": null,
"DNSDomain": "cluster.local",
"ContainerRuntime": "docker",
"CRISocket": "",
"NetworkPlugin": "",
"FeatureGates": "",
"ServiceCIDR": "10.96.0.0/12",
"ImageRepository": "",
"ExtraOptions": null,
"ShouldLoadCachedImages": true,
"EnableDefaultCNI": false
}
|
{
"KeepContext": false,
"MinikubeISO": "https://storage.googleapis.com/minikube/iso/minikube-v1.2.0.iso",
"Memory": 2048,
"CPUs": 2,
"DiskSize": 20000,
"VMDriver": "virtualbox",
"ContainerRuntime": "docker",
"HyperkitVpnKitSock": "",
"HyperkitVSockPorts": [],
"XhyveDiskDriver": "ahci-hd",
"DockerEnv": null,
"InsecureRegistry": null,
"RegistryMirror": null,
"HostOnlyCIDR": "192.168.99.1/24",
"HypervVirtualSwitch": "",
"KvmNetwork": "default",
"DockerOpt": null,
"DisableDriverMounts": false,
"NFSShare": [],
"NFSSharesRoot": "/nfsshares",
"UUID": "",
"GPU": false,
"Hidden": false,
"NoVTXCheck": false
}
|
Addons
minikube addons enable heapster #get some insight into CPU
References
- minikube Github