The Questions that You're Afraid to Ask about Containers

Yesterday, I delivered a talk to a lively audience at ContainerWorld in Santa Clara, California.

If I measured "the most interesting slides" by counting "the number of people who took a picture of the slide", then by far "the most interesting slides" are slides 8-11, which pose an answer the question:

"Should I run my PaaS on top of my IaaS, or my IaaS on top of my PaaS"?

In the Ubuntu world, that answer is super easy -- however you like!  At Canonical, we're happy to support:

1. Kubernetes running on top of Ubuntu OpenStack
2. OpenStack running on top of Canonical Kubernetes
3. Kubernetes running along side OpenStack

In all cases, the underlying substrate is perfectly consistent:

• you've got 1 to N physical or virtual machines
• which are dynamically provisioned by MAAS or your cloud provider
• running stable, minimal, secure Ubuntu server image
• carved up into fast, efficient, independently addressable LXD machine containers

With that as your base, we'll easily to conjure-up a Kubernetes, an OpenStack, or both.  And once you have a Kubernetes or OpenStack, we'll gladly conjure-up one inside the other.

As always, I'm happy to share my slides with you here.  You're welcome to download the PDF, or flip through the embedded slides below.

[Container world 2017] The Questions You're Afraid to Ask about Containers from Dustin Kirkland

Cheers,
Dustin

HOWTO: Automatically import your public SSH keys into LXD Instances

Just another reason why LXD is so awesome...

You can easily configure your own cloud-init configuration into your LXD instance profile.

In my case, I want cloud-init to automatically ssh-import-id kirkland, to fetch my keys from Launchpad.  Alternatively, I could use gh:dustinkirkland to fetch my keys from Github.

Here's how!

First, edit your default LXD profile (or any other, for that matter):

$ lxc profile edit default

Then, add the config snippet, like this:

config:
  user.vendor-data: |
    #cloud-config
    users:
      - name: root
        ssh-import-id: gh:dustinkirkland
        shell: /bin/bash
description: Default LXD profile
devices:
  eth0:
    name: eth0
    nictype: bridged
    parent: lxdbr0
    type: nic
name: default

Save and quit in your interactive editor, and then launch a new instance:

$ lxc launch ubuntu:x
Creating amazed-manatee
Starting amazed-manatee

Find your instance's IP address:

$ lxc list
+----------------+---------+----------------------+----------------------------------------------+------------+-----------+
|      NAME      |  STATE  |         IPV4         |                     IPV6                     |    TYPE    | SNAPSHOTS |
+----------------+---------+----------------------+----------------------------------------------+------------+-----------+
| amazed-manatee | RUNNING | 10.163.22.135 (eth0) | fdce:be5e:b787:f7d2:216:3eff:fe1c:773 (eth0) | PERSISTENT | 0         |
+----------------+---------+----------------------+----------------------------------------------+------------+-----------+

And now SSH in!

$ ssh ubuntu@10.163.22.135
$ ssh -6 ubuntu@fdce:be5e:b787:f7d2:216:3eff:fe1c:773

Enjoy!
:-Dustin

Kubernetes InstallFest at ContainerWorld -- Feb 21, 2017!

We at Canonical have been super busy fine tuning your experience with Kubernetes, Docker, and LXD on Ubuntu!

Amazingly, you're merely two commands away from standing up a fully functional, minimal Kubernetes cluster on any Ubuntu 16.04 LTS system...

$ sudo snap install --classic conjure-up
$ conjure-up kubernetes-core

Or, if you're feeling more enterprisey and want the full experience, try:

$ conjure-up canonical-kubernetes

I hope to meet some of you at ContainerWorld in Santa Clara next week.  Marco Ceppi and I are running a Kubernetes installfest workshop on Tuesday, February 21, 2017, from 3pm - 4:30pm.  I can guarantee that every single person who attends will succeed in deploying their own Kubernetes cluster to a public cloud (AWS, Azure, or Google), or to their Ubuntu laptop or VM.

Also, I'm giving a talk entitled, "Using the Right Container Technology for the Job", on Wednesday, February 22, 2017 from 1:30pm - 2:10pm.

Finally, I invite you to check out this 30-minute podcast with David Daly, from DevOpsChat, where we talked quite a bit about Containers and Kubernetes and the experience we're working on in Ubuntu...


Cheers,
:-Dustin