Install and Configure an Ubuntu VM

THIS PAGE IS UNDER CONSTRUCTION

Get Ubuntu

Get the Ubuntu ISO image from ubuntu.com. The recommended version is 16.04.3 LTS (Long Term Support). You can use the server or desktop edition. I used the server edition.

Get VirtualBox and VirtualBox Guest Additions

Make sure you have the VirtualBox Guest Additions ISO for your version of VirtualBox. I'm using VirtualBox 5.1.28. Save the Guest Additions ISO on your host computer along with the Ubuntu ISO. Get the Guest Additions ISO from here:

http://download.virtualbox.org/virtualbox

NOTE: Guest Additions versions prior to 5.1 will not work with Ubuntu 16.04.3. If you have an earlier version of VirtualBox, you should upgrade to the latest 5.1 version.

Create a new VM in VirtualBox for Ubuntu

Type: Linux

Version: Ubuntu (64-bit)

At least 2048 MB memory

At least 40 GB VDI

Network: Attached to: NAT

Create a port-forwarding rule for SSH

Create a port-forwarding rule so that you can use PuTTY (or other SSH client) to connect to the VM.

Go to "Network" settings in VirtualBox, add a port forwarding rule:

Name: SSH

Protocol: TCP

Host IP: 127.0.0.1

Host Port: 1022

Guest IP: <leave blank>

Guest Port: 22

Create Shared Folder

This is oriented to Windows users. If you're using a MAC or a Linux host computer, the details may be different. You can share any folder on the host computer with the Ubuntu VM. On Windows, a practical choice is to share the C:\Users folder, so that your Windows home directory will be accessible from the Ubuntu VM.

Go to "Shared Folders" settings in VirtualBox, add a share:

Folder Path: C:\Users

Folder Name: Users

Auto-mount: <checked>

Read-only: <unchecked>

Install Ubuntu in the VM

On the "Storage" panel in VirtualBox, click on "[ optical drive ]" and then "Choose Disk Image". Select your Ubuntu ISO image.

After selecting the ISO image, start the VM.

Follow the prompts to install Ubuntu.

Proxy Configuration (optional)

If you're behind a corporate firewall, configure some proxy settings. NOTE: your proxy configuration may require username and password credentials, not shown here.

Ubuntu system proxy setting:

System Settings → Network → Network proxy

(Replace "proxyhost" and port with your actual proxy information)

apt proxy setting:

Edit /etc/apt/apt.conf and add one line at the top (replace "proxyhost:port" with your actual proxy information):

Acquire::http::Proxy "http://proxyhost:port";

Reboot the VM.

Install SSH Server

sudo apt update

sudo apt install openssh-server

Connect to the VM from your host computer

The PuTTY SSH client is popular. A connection to localhost:1022 (or whatever port you have forwarded) will go to the VM.

Install VirtualBox Guest Additions

On the "Storage" panel in VirtualBox, click on "[ optical drive ]" and then "Choose Disk Image". Select your VirtualBox Guest Additions ISO image.

In a VM terminal window, mount the cdrom:

sudo mkdir -p /media/cdrom

sudo mount /dev/cdrom /media/cdrom

Install necessary dependencies:

sudo apt update

sudo apt install gcc g++ dkms

Install the guest additions. NOTE: look for errors in the command output! If you see an error that says you are missing kernel headers, the most likely cause is that you are using a VirtualBox version that is too old. The error message is misleading.

cd /media/cdrom

sudo ./VBoxLinuxAdditions.run

Add yourself to the vboxsf user group (replace "userid" with your user ID):

sudo usermod -a -G vboxsf userid

Reboot the VM.

In a VM terminal window, verify that you can access your home directory on the host computer, which should be mounted under here:

/media/sf_Users

Install Docker

Make sure curl is installed:

sudo apt update

sudo apt install curl

If you are behind a corporate firewall (replace "proxyhost:port" with your actual proxy information)

https_proxy="https://proxyhost:port" curl -fsSL https://apt.dockerproject.org/gpg | sudo apt-key add -

Otherwise:

curl -fsSL https://apt.dockerproject.org/gpg | sudo apt-key add -

Expected Response:

OK

Add the docker package repository:

sudo apt-add-repository "deb https://apt.dockerproject.org/repo ubuntu-xenial main"

Install packages:

sudo apt update

sudo apt-cache policy docker-engine

sudo apt install docker-engine

sudo apt install docker-compose

If you are behind a corporate firewall, you will need to configure proxy settings for docker so that images may be obtained from internet repositories. In the commands shown here, replace "proxyhost:port", "yourdomain1.com", and "yourdomain2.com" with appropriate values.

Make the docker configuration directory:

mkdir -p /etc/systemd/system/docker.service.d

Edit (create) this file:

/etc/systemd/system/docker.service.d/http-proxy.conf

Add these lines:

[Service]
Environment="HTTP_PROXY=https://proxyhost:port"
Environment="HTTPS_PROXY=https://proxyhost:port"
Environment="NO_PROXY=localhost,127.0.0.1,.yourdomain1.com,.yourdomain2.com"

Restart docker:

sudo systemctl daemon-reload

sudo systemctl restart docker

Add yourself to the docker user group (replace "userid" with your user ID):

sudo usermod -a -G docker userid

Log out and log back in so that the user group change will takeeffect.

Verify that you can connect to docker as yourself (i.e. not as root):

docker ps

Verify that you can download and run the hello-world container

docker run hello-world