VDSM pluggable networking – Vertical Slides – Slide Backgrounds
VDSM pluggable networking – Vertical Slides – Slide Backgrounds
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devconf2014
VDSM pluggable networking presentation for devconf.cz 2014On Github celebdor / devconf2014
VDSM pluggable networking
Created by Antoni Segura Puimedon / @celebdor
What is VDSM?
- oVirt's hypervisor node controller
- Exposes XML RPC API for controlling nodes':
- Virtualization
- Networking
- Storage
- Python 2
Architecture
VDSM gathers network information and applies network definitions.
oVirt-engine aggregates node information and issues calls to VDSM.
Architecture
Communication
The engine sends XML RPC requests to its hypervisor nodes' VDSM.
VDSM processes the requests executes the actions and returns status message and code.
Networking
Allowed configurations over physical device
Multiple bridged or bridgeless vlanned networks with a single bridge-less non vlanned network.
Single non-vlanned bridged network
VDSM networking API
-
Host networking
- setupNetworks Hooks Configurators
- setSafeNetworkConfig Configurators
- editNetwork Configurators
- getVdsCapabilities
-
VM networking
- hotplugNic Hooks
- hotunplugNic Hooks
- vmUpdateDevice Hooks
Hooks
- Scripts installed to /usr/libexec/vdsm/hooks/
- Can be written in any programming language
- IO via environment variables and files
- XML and JSON file interface
- Placed before and after API calls to extend VDSM
Host networking Hooks
-
before_network_setup
- Input: JSON of setupNetworks API command (nets and bonds definitions)
- Output: JSON dump of network and bonding definitions for setupNetworks to apply
#!/usr/bin/env python
from systemd import journal
from vdsm import netinfo
import json, os, sys
with open(os.environ['_hooks_json']) as data_file:
setup_nets_config = json.load(data_file)
networks = netinfo.networks() # Current nets
for network, data in setup_nets_config['request']['networks'].items():
if 'remove' in data:
journal.send('VDSM to remove network %s' % network)
else:
journal.send('VDSM to configure network %s' % network,
NEWNET=network in networks, DEF=str(data))
after_network_setup
- Input: JSON of what was set for setupNetworks to apply
Vertical Slides
Slides can be nested inside of other slides, try pressing down.
Basement Level 1
Press down or up to navigate.
Basement Level 2
Cornify
Basement Level 3
That's it, time to go back up.
Slides
Not a coder? No problem. There's a fully-featured visual editor for authoring these, try it out at http://slid.es.
Point of View
Press ESC to enter the slide overview.
Hold down alt and click on any element to zoom in on it using zoom.js. Alt + click anywhere to zoom back out.
Works in Mobile Safari
Try it out! You can swipe through the slides and pinch your way to the overview.
Marvelous Unordered List
- No order here
- Or here
- Or here
- Or here
Fantastic Ordered List
One is smaller than... Two is smaller than... Three!Markdown support
For those of you who like that sort of thing. Instructions and a bit more info available here.
<section data-markdown> ## Markdown support For those of you who like that sort of thing. Instructions and a bit more info available [here](https://github.com/hakimel/reveal.js#markdown). </section>
Transition Styles
You can select from different transitions, like: Cube - Page - Concave - Zoom - Linear - Fade - None - Default
Themes
Reveal.js comes with a few themes built in: Default - Sky - Beige - Simple - Serif - Night Moon - Solarized
* Theme demos are loaded after the presentation which leads to flicker. In production you should load your theme in the <head> using a <link>.
Global State
Set data-state="something" on a slide and "something" will be added as a class to the document element when the slide is open. This lets you apply broader style changes, like switching the background.
Custom Events
Additionally custom events can be triggered on a per slide basis by binding to the data-state name.
Reveal.addEventListener( 'customevent', function() {
console.log( '"customevent" has fired' );
} );
Slide Backgrounds
Set data-background="#007777" on a slide to change the full page background to the given color. All CSS color formats are supported.
Image Backgrounds
<section data-background="image.png">
Repeated Image Backgrounds
<section data-background="image.png" data-background-repeat="repeat" data-background-size="100px">
Background Transitions
Pass reveal.js the backgroundTransition: 'slide' config argument to make backgrounds slide rather than fade.
Background Transition Override
You can override background transitions per slide by using data-background-transition="slide".
Clever Quotes
These guys come in two forms, inline: “The nice thing about standards is that there are so many to choose from” and block:
“For years there has been a theory that millions of monkeys typing at random on millions of typewriters would reproduce the entire works of Shakespeare. The Internet has proven this theory to be untrue.”Pretty Code
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}
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}
}
Courtesy of highlight.js.
Intergalactic Interconnections
You can link between slides internally, like this.
Fragmented Views
Hit the next arrow...
... to step through ...
any type of view fragments This slide has fragments which are also stepped through in the notes window.Fragment Styles
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grow
shrink
roll-in
fade-out
highlight-red
highlight-green
highlight-blue
current-visible
highlight-current-blue
Spectacular image!
Export to PDF
Presentations can be exported to PDF, below is an example that's been uploaded to SlideShare.
Take a Moment
Press b or period on your keyboard to enter the 'paused' mode. This mode is helpful when you want to take distracting slides off the screen during a presentation.