Cooking up a Cloud - An Intro To Chef - SDRuby 2009-09-03
1. Cooking up a Cloud
An intro to Chef & EC2
Nick Zadrozny
2. The good old days.
• Order up some servers
• Install an operating system
• Configure it manually
• Brag about the uptime a year later
3. The good old days.
• Order up some servers
• Install an operating system
• Configure it manually
• Brag about the uptime a year later
4. The good old days.
1. provision
you price out the hardware for a server
order the hardware and build it
or have some vendor build it for you
• Order up some servers
boot it up
run some burn-in tests to make sure it's all working
• Install an operating system
• Configure it manually
• Brag about the uptime a year later
5. The good old days.
• Order up some servers
• Install an operating system
2. bootstrap
install your operating system
shell script to install various prerequisites (i.e. ruby and rubygems)
• Configure it manually
• Brag about the uptime a year later
6. The good old days.
• Order up some servers
• Install an operating system
• Configure it manually
3. configure
manually configure your applications and ser vices
if you're sophisticated, perhaps t weak a shell script
• Brag about the uptime a year later
7. The good old days.
• Order up some servers
• Install an operating system
• Configure it manually
• Brag about the uptime a year later
4. command and control
deploy your app and use it
something running slow? ssh in and check the load
8. Virtualize!
• Skip all that nasty hardware stuff.
• Still have to do a lot of configuration.
9. Breaking it down:
•
As the time to provision
Provision
decreases, the time
invested in later steps
becomes the bottleneck!
This becomes particularly
•
obvious in the cloud.
Bootstrap
• Configure
• “Command & control”
