Let’s explore what you got from debootstrap command. Output from our debootstrap bionic bionic > ls -lĭrwxr-xr-x 21 root root 4096 Oct 8 23:22 Explore the newly created docker image directory
CREATE IMAGE OF HARD DRIVE FROM UBUNTU CODE
Command will take some time to finish.Īfter command get completed, you will see the directory relevant to Ubuntu code name you used.In our case directory called ‘bionic’ is created. For this, we will use the Ubuntu release code name that is ‘Bionic’. Here,we are creating Ubuntu 18.04 LTS docker base image. Setting up debootstrap (1.0.78+nmu1ubuntu1.6) Run debootstrap Processing triggers for man-db (2.7.5-1). Unpacking debootstrap (1.0.78+nmu1ubuntu1.6). 380627 files and directories currently installed.) Selecting previously unselected package debootstrap. Get:1 xenial-updates/main amd64 debootstrap all 1.0.78+nmu1ubuntu1.6 The following NEW packages will be installed:Ġ upgraded, 1 newly installed, 0 to remove and 35 not upgraded.Īfter this operation, 262 kB of additional disk space will be used. Create directory for docker image workshopĬreate directory for docker base image work and change to after creating it.We are using our Ubuntu 16.04 LTS Desktop for creating base image.Hence,all commands are for debian/ubuntu system.Įither login as root or become superuser by using command sudo su You can create Ubuntu docker image from other Linux system also but your system should have debootstrap script. We are using Ubuntu 16.04 LTS Desktop but particular Operating System is not restrictive for creating docker base image. Ubuntu Release Code Name: To create docker image we need ‘Ubuntu release code name’ for eg. Prereqsĭebootstrap: We will use the deboostrap script to create the docker base image. GoalĬreate Ubuntu 18.04 LTS docker base image. You can find Ubuntu release code name from here –. Note: This method is applicable to create docker base image of all Ubuntu version. In this post, we will learn to create Ubuntu docker base image.
CREATE IMAGE OF HARD DRIVE FROM UBUNTU HOW TO
Sudo dd if=/dev/sda1 | ssh “dd of=/media/HD-LABEL/LinuxPart.Have you just started working on docker containers? You may have also thought about how to create docker base image of the Operating System. If you’re doing this over the local network, and your destination computer is running an Ubuntu Live CD, the command will be something like: Sudo dd if=/dev/sda1 | ssh “dd of=/home/tbekolay/LinuxPart.image”
In our example, we’ll be storing the drive image on a remote Linux machine, so our terminal command is: It takes the output from the first half of the line (the dd if= part) and sends it to the second half of the line (the ssh part) – or, it “pipes” the result of the left part to the right part. What may be new to you is the “|” character, which in Linux terms is called a “pipe”.
It looks complicated, but if you look piece-by-piece it should make sense. Now the complicated part: the dd invocation. In our case, we want to make an image of a small Linux partition, /dev/sda1. In the terminal window, enter in the command Now, we need to find the hard drive or hard drive partition that you want to make an image of. We’ve described several methods previously, but the most direct way is to open up a terminal and enter the command ifconfig. The first step is to boot up the computer you want to store the drive image on – the destination computer – and find its IP address. Ideally, both computers would be on the same local network, as transfer speeds will be much faster, but you can do this for most computers that you have ssh access to. Of course, you can boot both computers up with an Ubuntu Live CD and this method will work great – you will need two separate Live CDs or USB drives, however. To set this up, you will need two computers, both running Linux. Using a combination of dd and ssh lets us transfer a drive image from one computer to another in one step, requiring no local storage in between. However, putting an image on an external drive and then transferring that to a different computer is a pain. We’re fans of dd, having used it to clone hard drives and make drive images locally in the past.
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