Minikube quickly sets up a local Kubernetes cluster, which is great for learning!
These are the pre-requisites, as of today, as per the minikube documentation:
2 CPUs or more
2GB of free memory
20GB of free disk space
Internet connection
Container or virtual machine manager, such as: Docker, Hyperkit, Hyper-V, KVM, Parallels, Podman, VirtualBox, or VMWare
Follow these steps to get started with minikube -
Installation
sudo apt update
Use arch command to get the architecture:
In our case, it is: x86_64
Install minikube
curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube_latest_amd64.deb
sudo dpkg -i minikube_latest_amd64.deb
Install minikube on x86-64 Linux using Debian package
If you see the below error, you would need to install one of the Supported Drivers for Minikube. In this case, we will be using Docker.
$ minikube start
😄 minikube v1.21.0 on Ubuntu 20.04
👎 Unable to pick a default driver. Here is what was considered, in preference order:
▪ docker: Not installed: exec: "docker": executable file not found in $PATH
▪ kvm2: Not installed: exec: "virsh": executable file not found in $PATH
▪ vmware: Not installed: exec: "docker-machine-driver-vmware": executable file not found in $PATH
▪ podman: Not installed: exec: "podman": executable file not found in $PATH
▪ virtualbox: Not installed: unable to find VBoxManage in $PATH
❌ Exiting due to DRV_NOT_DETECTED: No possible driver was detected. Try specifying --driver, or see https://minikube.sigs.k8s.io/docs/start/
Install Docker
Install docker from here: https://docs.docker.com/engine/install/ubuntu/
We would get the following error if we try to start minkube now:
$ sudo minikube start
😄 minikube v1.21.0 on Ubuntu 20.04
✨ Automatically selected the docker driver. Other choices: none, ssh
🛑 The "docker" driver should not be used with root privileges.
💡 If you are running minikube within a VM, consider using --driver=none:
📘 https://minikube.sigs.k8s.io/docs/reference/drivers/none/
❌ Exiting due to DRV_AS_ROOT: The "docker" driver should not be used with root privileges.
Manage Docker as non-root user
Follow the steps mentioned here to manage Docker as a non-root user: https://docs.docker.com/engine/install/linux-postinstall/#manage-docker-as-a-non-root-user
You are ready now ready to start your minikube single node cluster.
Using Minikube
Start Minikube
$ minikube start
😄 minikube v1.21.0 on Ubuntu 20.04
✨ Automatically selected the docker driver. Other choices: none, ssh
👍 Starting control plane node minikube in cluster minikube
🚜 Pulling base image ...
💾 Downloading Kubernetes v1.20.7 preload ...
> preloaded-images-k8s-v11-v1...: 492.20 MiB / 492.20 MiB 100.00% 97.36 Mi
> gcr.io/k8s-minikube/kicbase...: 359.09 MiB / 359.09 MiB 100.00% 12.86 Mi
🔥 Creating docker container (CPUs=2, Memory=2200MB) ...
🐳 Preparing Kubernetes v1.20.7 on Docker 20.10.7 ...
▪ 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: default-storageclass, storage-provisioner
💡 kubectl not found. If you need it, try: 'minikube kubectl -- get pods -A'
🏄 Done! kubectl is now configured to use "minikube" cluster and "default" namespace by default
Test
You can now use the minikube kubectl command to test if everything works.
$ minikube kubectl -- get pods -A
> kubectl.sha256: 64 B / 64 B [--------------------------] 100.00% ? p/s 0s
> kubectl: 38.36 MiB / 38.36 MiB [-------------] 100.00% 1.09 GiB p/s 200ms
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system coredns-74ff55c5b-ht448 0/1 Running 0 31s
kube-system etcd-minikube 0/1 Running 0 46s
kube-system kube-apiserver-minikube 1/1 Running 0 46s
kube-system kube-controller-manager-minikube 0/1 Running 0 46s
kube-system kube-proxy-pq5hc 1/1 Running 0 31s
kube-system kube-scheduler-minikube 0/1 Running 0 46s
kube-system storage-provisioner 1/1 Running 0 44s
Install kubectl
The most common way to connect with you Kubernetes Cluster is by using kubectl command line tool.
Install Kubectl from here: LINK
Use kubectl
$ kubectl get pods -A
NAMESPACE NAME READY STATUS RESTARTS AGE
kube-system coredns-74ff55c5b-ht448 1/1 Running 0 2m27s
kube-system etcd-minikube 1/1 Running 0 2m42s
kube-system kube-apiserver-minikube 1/1 Running 0 2m42s
kube-system kube-controller-manager-minikube 1/1 Running 0 2m42s
kube-system kube-proxy-pq5hc 1/1 Running 0 2m27s
kube-system kube-scheduler-minikube 1/1 Running 0 2m42s
kube-system storage-provisioner 1/1 Running 1 2m40s
Other useful commands
Access the Minikube dashboard remotely:
kubectl proxy --address='0.0.0.0' --disable-filter=true
Get dashboard URL:
minikube dashboard --url