This is a step by step guide to install Minikube on the Ubuntu Linux system. Minikube is a lightweight Kubernetes implementation that creates a VM on your local machine and deploys a simple cluster containing only one node. Minikube is available for Linux, macOS, and Windows systems. Minikube is very good option for testing kubernetes (k8s) if you don't have much compute resources in your system plus it doesn't require much configuration and it is ready to use application
I have installed Ubuntu on the VMware ESXi server as Virtual Machine in my lab. Edit settings of VM, and in the Virtual Hardware tab, expand CPU and enable checkbox of Hardware virtualization >> Expose hardware assisted virtualization to the guest OS.
Once VM is ready with OS and configuration, Get sudo prompt on the system, Upgrade Ubuntu system with command apt-get update and apt-get upgrade. Install curl, apt-transport-https and vim packages application using apt command.
ubuntu@AnsibleAWX:~$ sudo su - root@AnsibleAWX:~# root@AnsibleAWX:~# apt-get update && apt-get upgrade -y Hit:1 http://us.archive.ubuntu.com/ubuntu focal InRelease Hit:2 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease Hit:3 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease Get:4 http://security.ubuntu.com/ubuntu focal-security InRelease [114 kB] Fetched 114 kB in 1s (109 kB/s) Reading package lists... Done root@AnsibleAWX:~# root@AnsibleAWX:~# apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done Calculating upgrade... Done The following packages have been kept back: fwupd gir1.2-javascriptcoregtk-4.0 gir1.2-webkit2-4.0 gnome-shell-extension-desktop-icons gvfs gvfs-backends gvfs-bin gvfs-common gvfs-daemons gvfs-fuse gvfs-libs libegl-mesa0 libfwupd2 libfwupdplugin1 libgbm1 libgl1-mesa-dri libglapi-mesa libglx-mesa0 libjavascriptcoregtk-4.0-18 libsmbclient libwbclient0 libwebkit2gtk-4.0-37 libxatracker2 linux-generic-hwe-20.04 linux-headers-generic-hwe-20.04 linux-image-generic-hwe-20.04 mesa-vulkan-drivers samba-libs ubuntu-advantage-tools 0 upgraded, 0 newly installed, 0 to remove and 29 not upgraded. root@AnsibleAWX:~# root@AnsibleAWX:~# apt-get install curl apt-transport-https vim -yA Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: apt-transport-https curl 0 upgraded, 2 newly installed, 0 to remove and 29 not upgraded. Need to get 163 kB of archives. After this operation, 574 kB of additional disk space will be used. Get:1 http://us.archive.ubuntu.com/ubuntu focal-updates/universe amd64 apt-transport-https all 2.0.9 [1,704 B] Get:2 http://us.archive.ubuntu.com/ubuntu focal-updates/main amd64 curl amd64 7.68.0-1ubuntu2.14 [161 kB] Fetched 163 kB in 0s (785 kB/s) Selecting previously unselected package apt-transport-https. (Reading database ... 184086 files and directories currently installed.) Preparing to unpack .../apt-transport-https_2.0.9_all.deb ... Unpacking apt-transport-https (2.0.9) ... Selecting previously unselected package curl. Preparing to unpack .../curl_7.68.0-1ubuntu2.14_amd64.deb ... Unpacking curl (7.68.0-1ubuntu2.14) ... Setting up apt-transport-https (2.0.9) ... Setting up curl (7.68.0-1ubuntu2.14) ... Processing triggers for man-db (2.9.1-1) ... root@AnsibleAWX:~#
Next install virtualbox application with its extension pack. Minikube will host the kubernetes node on this nested virtual box. Press Y to proceed. (Alternatively you can install kvm to host minikube)
root@AnsibleAWX:~# apt-get install virtualbox virtualbox-ext-pack -y Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: binutils binutils-common binutils-x86-64-linux-gnu build-essential dctrl-tools dkms dpkg-dev fakeroot g++ g++-9 gcc gcc-9 libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libasan5 libatomic1 libbinutils libc-dev-bin libc6-dev libcrypt-dev libctf-nobfd0 libctf0 libdouble-conversion3 libfakeroot libgcc-9-dev libgsoap-2.8.91 libitm1 liblsan0 liblzf1 libpcre2-16-0 libqt5core5a libqt5dbus5 libqt5gui5 libqt5network5 libqt5opengl5 libqt5printsupport5 libqt5svg5 libqt5widgets5 libqt5x11extras5 libquadmath0 libsdl1.2debian libstdc++-9-dev libtsan0 libubsan1 libvncserver1 libxcb-xinerama0 libxcb-xinput0 linux-libc-dev make manpages-dev qt5-gtk-platformtheme qttranslations5-l10n virtualbox-dkms virtualbox-qt Suggested packages: binutils-doc debtags menu debian-keyring g++-multilib g++-9-multilib gcc-9-doc gcc-multilib autoconf automake libtool flex bison gcc-doc gcc-9-multilib gcc-9-locales glibc-doc qt5-image-formats-plugins qtwayland5 libstdc++-9-doc make-doc vde2 virtualbox-guest-additions-iso The following NEW packages will be installed: binutils binutils-common binutils-x86-64-linux-gnu build-essential dctrl-tools dkms dpkg-dev fakeroot g++ g++-9 gcc gcc-9 libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libasan5 libatomic1 libbinutils libc-dev-bin libc6-dev libcrypt-dev libctf-nobfd0 libctf0 libdouble-conversion3 libfakeroot libgcc-9-dev libgsoap-2.8.91 libitm1 liblsan0 liblzf1 libpcre2-16-0 libqt5core5a libqt5dbus5 libqt5gui5 libqt5network5 libqt5opengl5 libqt5printsupport5 libqt5svg5 libqt5widgets5 libqt5x11extras5 libquadmath0 libsdl1.2debian libstdc++-9-dev libtsan0 libubsan1 libvncserver1 libxcb-xinerama0 libxcb-xinput0 linux-libc-dev make manpages-dev qt5-gtk-platformtheme qttranslations5-l10n virtualbox virtualbox-dkms virtualbox-ext-pack virtualbox-qt 0 upgraded, 57 newly installed, 0 to remove and 29 not upgraded. Need to get 92.1 MB of archives. After this operation, 397 MB of additional disk space will be used. Do you want to continue? [Y/n] Y
Configure package virtualbox-ext-pack, accept EULA, press Ok using tab and enter key.
Accept the terms of the VIrtualBox PUEL license pressing YES option.
Package installation is completed. Download Minikube application. (you can use wget application to download this application and rename it). Change execution mode of Minikube application file. copy it to /usr/local/bin folder. Its time to check minikube now, check its version.
root@AnsibleAWX:~# curl -o minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 73.1M 100 73.1M 0 0 76.5M 0 --:--:-- --:--:-- --:--:-- 76.5M root@AnsibleAWX:~# root@AnsibleAWX:~# ls -l total 74952 -rw-r--r-- 1 root root 76750347 Dec 1 13:43 minikube root@AnsibleAWX:~# root@AnsibleAWX:~# chmod 755 minikube root@AnsibleAWX:~# root@AnsibleAWX:~# ls -l total 74952 -rwxr-xr-x 1 root root 76750347 Dec 1 13:43 minikube root@AnsibleAWX:~# root@AnsibleAWX:~# cp minikube /usr/local/bin/ root@AnsibleAWX:~# root@AnsibleAWX:~# minikube version minikube version: v1.28.0 commit: 986b1ebd987211ed16f8cc10aed7d2c42fc8392f root@AnsibleAWX:~#
Start the minikube as shown below, and verify the nodes using kubectl command. There is only one node in my k8s cluster. It holds all master and workers roles features and control-plane.
ubuntu@AnsibleAWX:~$ ubuntu@AnsibleAWX:~$ minikube start --cpus=4 --memory=6g --addons=ingress * minikube v1.28.0 on Ubuntu 20.04 * Using the virtualbox driver based on existing profile * Starting control plane node minikube in cluster minikube * Creating virtualbox VM (CPUs=4, Memory=6144MB, Disk=20000MB) ... * Preparing Kubernetes v1.25.3 on Docker 20.10.20 ... - Generating certificates and keys ... - Booting up control plane ... - Configuring RBAC rules ... * Verifying Kubernetes components... - Using image k8s.gcr.io/ingress-nginx/controller:v1.2.1 - Using image k8s.gcr.io/ingress-nginx/kube-webhook-certgen:v1.1.1 - Using image k8s.gcr.io/ingress-nginx/kube-webhook-certgen:v1.1.1 - Using image gcr.io/k8s-minikube/storage-provisioner:v5 * Verifying ingress addon... * Enabled addons: storage-provisioner, default-storageclass, ingress * 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 ubuntu@AnsibleAWX:~$ ubuntu@AnsibleAWX:~$ minikube kubectl get nodes > kubectl.sha256: 64 B / 64 B [-------------------------] 100.00% ? p/s 0s > kubectl: 42.93 MiB / 42.93 MiB [----------] 100.00% 125.13 MiB p/s 500ms NAME STATUS ROLES AGE VERSION minikube Ready control-plane 102s v1.25.3
Next I have assigned kubectl alias, verify the all pods in cluster. At this point Minikube is ready to rock n` roll.
ubuntu@AnsibleAWX:~$ alias kubectl="minikube kubectl --" ubuntu@AnsibleAWX:~$ ubuntu@AnsibleAWX:~$ kubectl get pods -A NAMESPACE NAME READY STATUS RESTARTS AGE ingress-nginx ingress-nginx-admission-create-7dzbt 0/1 Completed 0 3m43s ingress-nginx ingress-nginx-admission-patch-69hct 0/1 Completed 1 3m43s ingress-nginx ingress-nginx-controller-5959f988fd-7vlh5 1/1 Running 0 3m43s kube-system coredns-565d847f94-9ndht 1/1 Running 0 3m43s kube-system etcd-minikube 1/1 Running 0 3m56s kube-system kube-apiserver-minikube 1/1 Running 0 3m53s kube-system kube-controller-manager-minikube 1/1 Running 0 3m53s kube-system kube-proxy-jlvl5 1/1 Running 0 3m43s kube-system kube-scheduler-minikube 1/1 Running 0 3m59s kube-system storage-provisioner 1/1 Running 1 (3m8s ago) 3m49s ubuntu@AnsibleAWX:~$
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