Introduction
Intro to go here explaining LXD versus LXC and why you want to use it.
Setup
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Images
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Cached Images in Image Store
List images currently cached in the image store. There should be none to start,
lxc image list
Image Servers
LXD has 3 image server lists by default,
Image Server LIst | Purpose | Comment |
---|---|---|
ubuntu: | Ubuntu stable images. | We'll be working with this one. |
ubuntu-daily: | ||
images: | All Linux distributions. | For example you can load a RedHat Linux alternative distrobution. |
Pulling Image Server Lists
Let's look at the ubuntu: list,
lxc image list ubuntu: | less +--------------------+--------------+--------+-------------------------------------------------+---------+----------+-------------------------------+ | ALIAS | FINGERPRINT | PUBLIC | DESCRIPTION | ARCH | SIZE | UPLOAD DATE | +--------------------+--------------+--------+-------------------------------------------------+---------+----------+-------------------------------+ | p (5 more) | 6041c5e200b6 | yes | ubuntu 12.04 LTS amd64 (release) (20161205) | x86_64 | 156.47MB | Dec 5, 2016 at 12:00am (UTC) | +--------------------+--------------+--------+-------------------------------------------------+---------+----------+-------------------------------+ | p/armhf (2 more) | c19b1fff3336 | yes | ubuntu 12.04 LTS armhf (release) (20161205) | armv7l | 135.19MB | Dec 5, 2016 at 12:00am (UTC) | +--------------------+--------------+--------+-------------------------------------------------+---------+----------+-------------------------------+ | p/i386 (2 more) | ce5c6821eebb | yes | ubuntu 12.04 LTS i386 (release) (20161205) | i686 | 139.28MB | Dec 5, 2016 at 12:00am (UTC) | +--------------------+--------------+--------+-------------------------------------------------+---------+----------+-------------------------------+ ...
The output table from list is not very clear. I don't understand what to reference to use the "launch" command. Will put explanation here once figured out. Here is what I can tell,
Example "launch" Command Reference | Column | Note |
---|---|---|
ubuntu:16.04 | ||
ubuntu:6041c5e200b6 | FINGERPRINT | Will specifically reference the specific image in the list.g |
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Spinning Up an LXD Container
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lxc launch ubuntu:16.04 container01
This command does the following simultaneously,
- References the ubuntu: Image Server List
- Looks for 16.01 images
- Matches the current architecture of the machine you are on (in my example
- Checks the cache Image Store for the required image
- Download (if not in Image Store) the target image
- Setup Container called container01 with default settings
- Install the target image into container01
- Start container01
We can see the downloaded target image,
lxc image list +-------+--------------+--------+---------------------------------------------+--------+----------+------------------------------+ | ALIAS | FINGERPRINT | PUBLIC | DESCRIPTION | ARCH | SIZE | UPLOAD DATE | +-------+--------------+--------+---------------------------------------------+--------+----------+------------------------------+ | | f4c9feb3e401 | no | ubuntu 16.04 LTS amd64 (release) (20161205) | x86_64 | 143.53MB | Dec 22, 2016 at 3:37am (UTC) | +-------+--------------+--------+---------------------------------------------+--------+----------+------------------------------+
Now instead of empty, we see the downloaded image which matches our architecture.
Also, let's look at the running container,
lxc list +-------------+---------+----------------------+------+------------+-----------+ | NAME | STATE | IPV4 | IPV6 | TYPE | SNAPSHOTS | +-------------+---------+----------------------+------+------------+-----------+ | container01 | RUNNING | 10.94.217.171 (eth0) | | PERSISTENT | 0 | +-------------+---------+----------------------+------+------------+-----------+
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Reuuu9ferences
Gives more details on initializing lxd - https://insights.ubuntu.com/2016/03/16/lxd-2-0-installing-and-configuring-lxd-212/
Official Ubuntu documentation - https://linuxcontainers.org/lxd/getting-started-cli/
Try Online Interactive Tutorial - https://linuxcontainers.org/lxd/try-it/