DevOpsfor Developers

#DesertCodeCamp @wfbutton

Promises of DevOpsFaster releases

More confidence Better failure detection

Higher resiliency Improved monitoring

#DesertCodeCamp @wfbutton

Remember where we came from?and where we dont want to go back to!

#DesertCodeCamp @wfbutton

IT and Development were not aligned Provisioning hardware was slow and expensive

Changes were risky and hard to rollback

Well have that server ready for you next quarter.

#DesertCodeCamp @wfbutton

To the cloud!

Just needed managers CC

Infinite access to servers

Cloud all the things!

#DesertCodeCamp @wfbutton

and then the bill cameAccounting was not pleased.

#DesertCodeCamp @wfbutton

Rule #1Use what you need, but need what you use.

#DesertCodeCamp @wfbutton

Use the tools:

AWS Cost Analyzer Billing Alerts

Heroku Dashboard

#DesertCodeCamp @wfbutton

and now everything is great#DesertCodeCamp @wfbutton

Managing Deployments

Define the rules of production

Who can push code (ideally, no one)

Tests that must pass

Rollbacks

Change review boards suck (but sometimes are needed)

#DesertCodeCamp @wfbutton

Rule #2Thou shalt not touch production (by hand).

#DesertCodeCamp @wfbutton

Jenkins or CircleCI Define the workflow Triggered automatically Rules/Tests must pass No humans!

#DesertCodeCamp @wfbutton

Testing Tests for your code

Mandatory

Minimum levels of test

Server tests

rspec for puppet

Test Kitchen

CI Tool requires passing tests

API testing with jmeter

#DesertCodeCamp @wfbutton

Dont you forget about me. Configuration management

Remember how we got here?

IT does play a role

and it should be automated

Chef/Puppet/Ansible/Salt

Same rules:

Tests/ Rollback/ Ephemeral

#DesertCodeCamp @wfbutton

Rule #3Infrastructure is code.

#DesertCodeCamp @wfbutton

From a Disaster Recovery View

Find the most recent backup

Pray that its good

Build a new server

Search Stack Overflow

Test

Search Stack Overflow

Ask business what data they really need

Update LinkedIn profile

Deploy via CI

#DesertCodeCamp @wfbutton

MonitoringIts not just for disk space

or CPU or Memory

(though those are important too!)

#DesertCodeCamp @wfbutton

Correlated EventsResponse time tagged with deploys

#DesertCodeCamp @wfbutton

Apdex Score Its a real thing

Measure of response times against a threshold

https://en.wikipedia.org/wiki/Apdex

Satisfied: T or less

Tolerating: >T, 4T

#DesertCodeCamp @wfbutton

Things that dont

Polling is great for this

TTL on metrics (Riemann)

Instrument alerts and fallbacks in code

The Art of Monitoring -James Turnbull

#DesertCodeCamp @wfbutton

Metrics Overload

What are your customers paying you for?

How do you measure that?

What are the dependencies?

#DesertCodeCamp @wfbutton

Rule #4If its important, measure it.

#DesertCodeCamp @wfbutton

Rules in Review

Use what you need, but need what you use.

Thou shalt not touch production (by hand).

Infrastructure is code.

If its important, measure it.

#DesertCodeCamp @wfbutton

Your Homework

Pick a rule.

Make some progress.

Socialize.

Iterate.

This is how you build culture, and

culture is really what DevOps is

about.

#DesertCodeCamp @wfbutton