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Installing Minikube in the Cloud

In this hands-on lab we will be installing Minikube on an Ubuntu server in the Linux Academy Cloud playground. This means that we will need to ensure that all of the dependencies are met, and that we are installing the correct version Minikube. Once we have Minikube installed, we will deploy an Nginx container to ensure that our installation is working correctly.

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Path Info

Clock icon Beginner
Clock icon 30m
Clock icon Nov 26, 2019

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Table of Contents

  1. Challenge

    Install Dependencies

    Install the container runtime, Docker in this case:

    sudo apt install -y
  2. Challenge

    Install Minikube

    Retrieve and then install the Minikube deb package:

    curl -LO
    sudo dpkg -i minikube_1.4.0.deb

    Once this is installed, set the default driver to none:

    sudo minikube config set vm-driver none

    Now start Minikube

    sudo minikube start

    Enable Users to Manage Environments

    For the developers to manage their own environments, they need to own certain directories. Let's give them ownership with this:

    sudo chown -R $USER $HOME/.kube $HOME/.minikube
  3. Challenge

    Create and Expose a Deployment

    In order to create a deployment we will need to install kubectl:

    curl -LO`curl -s`/bin/linux/amd64/kubectl

    Now we'll have a kubectl file sitting in our directory (ls will show it) that we have to execute. Make it executable first, then move it to one of the directories where other executables are stored (/usr/local/bin in this case):

    chmod +x ./kubectl
    sudo mv ./kubectl /usr/local/bin/kubectl

    Now we want to make sure that we can see our Minikube setup and our Kubernetes cluster using kubectl:

    sudo kubectl get po -A

    Create and Expose a Deployment

    Create a deployment, in this case Nginx:

    sudo kubectl create deployment --image nginx my-nginx

    To access the deployment we will need to expose it:

    sudo kubectl expose deployment my-nginx --port=80 --type=NodePort

    Once this is done, we need to determine where to access the Nginx default page:

    sudo minikube service list

    Once we have the output of this command, we'll aim a curl command at the Nginx service on the service IP and port that the service has mapped to. Look for the row in the output of that last command that has our my-nginx as a NAME. There's a local IP and port in the TARGET PORT column. Our next command will look something like this:

    curl http://<LOCAL_IP>:<PORT>
  4. Challenge

    Create an Nginx Proxy to Access the Installed Application from the Public IP Address

    In order to expose our application, we've got to install a proxy first:

    sudo apt install -y nginx

    Edit the Default Site

    sudo vim /etc/nginx/sites-enabled/default

    We're going to change the line that reads:

    try_files $uri $uri/ =404;

    so that it instead reads something like:

    proxy_pass http://<LOCAL_IP>:<PORT>;

    This is going to be right around line 50 in the file, and note that this http address and port we've added are what we got from the minikube command we ran a little bit ago. Now we can save the file, then make Nginx read the config again with:

    sudo systemctl restart nginx

    Test in a Browser

    Back on our hands-on lab overview page, grab the public IP of our server. Paste that address into a new browser tab, and we should land at our Welcome to nginx! page.

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