An introduction to devops. Developers and Operations working together. Plus Elmo gets rescued.

1. Devops
A tale of developers and operations
barcamb3 24th April 2010
gareth rushgrove | morethanseven.net http://www.flickr.com/photos/estherase/29903995/

2. morethanseven.net
Gareth Rushgrove
gareth rushgrove | morethanseven.net

3. We Have A Problem
gareth rushgrove | morethanseven.net http://www.flickr.com/photos/estherase/30344569/

4. “It works on my machine!
Every developer ever
Developers
gareth rushgrove | morethanseven.net

5. Sysadmins
gareth rushgrove | morethanseven.net

6. Development builds an application, the new hotness
which promises customers all the whizz-bang features
and will make the company millions...
Parable from http://www.kartar.net/2010/02/what-devops-means-to-me/
Deployment
gareth rushgrove | morethanseven.net

7. ...It is built using cutting edge technology and a brand
new platform and it has got to be delivered right now.
Development cuts code like crazy and gets the
product ready for market ahead of schedule and dash
off to the pub for the wrap party
Deployment
gareth rushgrove | morethanseven.net

8. “ The wonder application won’t run on our infrastructure
because {it’s too old, it doesn’t have capacity, we don’t
support that version}
The sysadmin
Deployment
gareth rushgrove | morethanseven.net

9. “ The architecture of the application doesn’t match our
{ storage, network, deployment, security } model
The sysadmin
Deployment
gareth rushgrove | morethanseven.net

10. “ We weren’t consulted about the { reporting, security,
monitoring, backup, provisioning } and it can’t be
“productionised”.
The sysadmin
Deployment
gareth rushgrove | morethanseven.net

11. - Metrics collection
- Monitoring and thresholds
- Load-feedback behaviour
- Instrumentation
- Fault tolerance
http://www.kitchensoap.com/2009/12/12/devops-cooperation-doesnt-just-happen-with-deployment/
Not just deployment
gareth rushgrove | morethanseven.net

12. Do We Have A Solution?
gareth rushgrove | morethanseven.net http://www.flickr.com/photos/estherase/30344571/

13. “ Dev/Ops is what some people are calling the renewed
cross-interest in development and operations collaboration
John Allspaw
Devops
gareth rushgrove | morethanseven.net

14. Tools, lots of tools
gareth rushgrove | morethanseven.net http://www.flickr.com/photos/estherase/30344572/

15. puppetlabs.com
Server Provisioning with Puppet
gareth rushgrove | morethanseven.net

16. class baseclass {
$packagelist = ["sudo", "openssh-server""]
package { $packagelist: ensure => installed }
service { sshd:
name => "ssh",
enable => true,
ensure => running
}
}
Puppet Class Example
gareth rushgrove | morethanseven.net

17. node 'example.com' inherits basenode {
$packagelist = ["nginx"]
package { $packagelist: ensure => installed }
service { "nginx":
ensure => running,
require => Package["nginx"]
}
}
Puppet Node Example
gareth rushgrove | morethanseven.net

18. auxesis.github.com/cucumber-nagios/
Cucumber Nagios
gareth rushgrove | morethanseven.net

19. Feature: google.co.uk
To broaden their knowledge
A user should be able
To search for things
Scenario: Searching for things
Given I visit "http://www.google.co.uk"
When I fill in "q" with "wikipedia"
And I press "Google Search"
Then I should see "www.wikipedia.org"
Cucumber DSL Example
gareth rushgrove | morethanseven.net

20. Feature: google.co.uk
To broaden their knowledge
A user should be able
To search for things
Scenario: Searching for things
Given I visit "http://www.google.co.uk"
When I fill in "q" with "wikipedia"
And I press "Google Search"
Then I should see "www.wikipedia.org"
1 scenario (1 failed)
4 steps (1 failed, 2 skipped, 1 passed)
0m0.332s
Cucumber Results Example
gareth rushgrove | morethanseven.net

21. - Processes
- Communications
- Automation
Not just tools
gareth rushgrove | morethanseven.net

22. “ Devs who are Ops, who like Ops to be Devs, that do Ops
like they're Devs, that Dev like they're Ops, always should
be people you really love
Jesse Robins
http://twitter.com/jesserobbins/status/11169019112
In Summary
Lots of reading
gareth rushgrove | morethanseven.net

23. - Patrick Debois - http://www.jedi.be/
- Damon Edwards - http://dev2ops.org/
- James Turnbull - http://www.kartar.net
- John Allspaw - http://www.kitchensoap.com/
Reading
gareth rushgrove | morethanseven.net

24. Questions?
gareth rushgrove | morethanseven.net http://www.flickr.com/photos/estherase/33464729/