Inspired by @levlaz, I'm publicly committing to a 100DaysOfDevOpsChallenge starting today!

#100DaysOfDevOps https://twitter.com/levlaz/status/1257904694749323264?s=20

1/

1st 1-1 chat with a SE (Solutions Engineer) today! He rec'd this primer on CI/CD
https://bit.ly/2xZ5rKz 

TIL

Deployments are decided by the sought-after, magical CTO co-founder

Releases should be decided by "I'll handle the business side" people

#100DaysOfDevOps

2/

Sales leader @LaunchDarkly rec'd "The Phoenix Project" to me

Finished Ch. 5.

TIL

Sucks to be in IT Ops cleaning up messes of Dev team

This book is written like stressful reality tv show at 2x speed

#100DaysOfDevOps

3/

cont. "The Phoenix Project"

Finished Ch. 9

TIL

The Ways

How to —

1. create a fast flow of work.

2. shorten and amplify feedback loops; fix quality at the source and avoid rework.

3. create a culture of experimentation & learning from failure.

#100DaysOfDevOps

4/

cont. "The Phoenix Project"

Finished Ch. 13

TIL

One person should not hoard all the knowledge
Careful documentation is necessary!
smoke tests & circuit designers
“November 1999 Thanksgiving Toys R Us” train-wreck
FUBAR

#100DaysOfDevOps #100DaysOfX

5/

cont. "The Phoenix Project"

Finished Ch. 19

TIL

"It’s not the upfront capital that kills you, it’s the operations and maintenance on the back end.” Like free

Taking needless work out of the system is > putting more work into the system.

#100DaysOfDevOps #100DaysOfX

6/

cont. "The Phoenix Project"

Finished Ch. 25

TIL

“What that graph says is that everyone needs idle time, or slack time. If no one has slack time, WIP gets stuck in the system. Or more specifically, stuck in queues, just waiting.”

#100DaysOfDevOps #100DaysOfX

7/

cont. "The Phoenix Project"

Finished Ch. 28

TIL

Always improve

“If you are not improving, entropy guarantees that you are actually getting worse, which ensures that there is no path to 0 errors, 0 work-related accidents, and 0 loss.”

#100DaysOfDevOps #100DaysOfX

8/

cont. "The Phoenix Project"

Finished Ch. 35

TIL

“In ten years, every COO will have come from IT. Any COO who doesn’t intimately understand the IT systems that actually run the business is just an empty suit, relying on someone else to do their job.”

#100DaysOfDevOps

9/

cont. "The Phoenix Project"

Finished.

TIL

THE FOUR TYPES OF WORK

Business projects
Internal IT projects
Changes
Unplanned work or recovery work (most wasteful, comes at the expense of planned work that will need to be replanned)

#100DaysOfDevOps #100DaysOfX

10/

DevOps Tools

- Continuous Development (Git)
- Continuous Integration (Jenkins)
- Continuous Deployment
--> Virtualization & Containerization (Docker)
--> Configuration Management (Puppet)
- Continuous Testing (Selenium)
- Continuous Monitoring (Nagios)

#100DaysOfDevOps

11/

"While @LaunchDarkly makes testing in production possible, [they need] to test their own code as thoroughly as possible at the integration stage.

LaunchDarkly uses @CircleCI to safely manage circular dependencies while deploying hundreds of times daily."

#100DaysOfDevOps