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Installing Docker and Kubernetes on Ubuntu
Docker and Kubernetes are the heroes of the DevOps world.
Docker is a containerization platform and Kubernetes is a container orchestrator for platforms like Docker.
Docker is a containerization platform and Kubernetes is a container orchestrator for platforms like Docker.
This article will discuss how we can set up Docker and Kubernetes on our Ubuntu machine.
We will be setting up Docker by adding its repository to our package index and then installing the Docker Debian packages via our
apt package manager.Let's begin.
First, we will refresh our package index, and install some packages which will help us add PGP keys and setting up therepository right through
https$ sudo apt-get update
$ sudo apt-get install \
apt-transport-https \
ca-certificates \
curl \
gnupg \
lsb-releaseRun the below command, and it will automatically add Docker PGP keys to our system
$ curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpgNow that we are done adding keys, it's time to add the repository URL which will help us install and timely update Docker on our system.
$ echo \
"deb [arch=amd64 signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/nullNow finally, it's time to install Docker. But first, we will need to refresh our package index as well.
$ sudo apt-get update
$ sudo apt-get install docker-ce docker-ce-cli containerd.ioNow that we have installed Docker, let us test it and give it a try.
sudo docker run hello-worldAfter you have run the above command if everything works fine you see output like below the image on your screen.
We will go through the process to install Kubernetes through the
apt package manager and snap both. You can choose which suits you betterFirst, we will refresh our package index, and install some packages which will help us add PGP keys and setting up the repository right through
https$ sudo apt-get update
$ sudo apt-get install -y apt-transport-https ca-certificates curlRun the below command, and it will automatically add Kubernetes PGP keys to our system
$ sudo curl -fsSLo /usr/share/keyrings/kubernetes-archive-keyring.gpg https://packages.cloud.google.com/apt/doc/apt-key.gpgNow that we are done adding keys, it's time to add repository URL which will help us install and timely update Kubernetes (
kubectl) on our system.echo "deb [signed-by=/usr/share/keyrings/kubernetes-archive-keyring.gpg] https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.listNow finally, its time to install Kubernetes(
kubectl). But first, we will need to refresh our package index as well.$ sudo apt-get update
$ sudo apt-get install -y kubectlInstalling
kubectl via snap is pretty easy and a single command work. You can also pick this alternative to set up Kubernetes. Though I will recommend installing via apt package manager as it is easily updatable.$ snap install kubectl --classic20