I’m sick and tired of virtual machines. They’re a significant waste of my compute resources. My laptops fan always starts spinning when I start up a virtual machine. But with container based workflows, I’ve never heard my fan go on. Even better, I’ve never had to re-build kernel moduels to get the latest version to work.
When I think of the production environments that I’ve deployed, and all the wasted RAM and storage, I get kinda sad.
My goal is to automate hardware and make containerization AWESOME.
Containers will let us Hyper-Subscribe our datacenters, without some magic from VMWare to share memory segments between OSes.
EDIT: Every time you reboot, you’ve gotta go BACK to developer options and set the ‘Background Apps’ to =< 2. :-(
Oh man, was I suffering from a slow Motorola Droid 4. Switching between apps took MINUTES. It was awful. I’m running Verizon supplied Android 4.1.2. I was blaming it on Waze or Facebook or not enough RAM. Then I did some searching and boy was I wrong.
All you gotta do is:
“Settings” -> “Developer Options” and set all the “animations” to off. For good measure I limited background apps to 3 in number.
Now my phone is fast and wonderful. It’s great! If this helps you too, leave a shoutout!
I love RunDeck. It’s just enough orchestration to get many jobs done in such an easy way. I can take whatever’s working for me, wrap it up in RunDeck and give it to someone. I wrote a long writeup on hooking it to your Active Directory, through OpenLDAP. I’m old school. But all I’ve ever wanted is a composable RunDeck. To bring inter-tool composition right into my face.
So then I fell in love with Chef and Puppet as they grabbed the very necessary spotlight. Suddenly, arising from the past of CFEngine, I could now code my infrastructure! Different parts of the system worked predictably, across platforms, and with such clarity and simplicity. Chef saves me thousands of lines of code, and helps me reason about my systems on a whole other level.
But these two worlds never really fit together very well. I want my “just enough orchestration,” but with the little bit of smarts necessary to interact intelligently with the abstract resources.
I was thinking, “Yeah, sure, it runs. But how does it all fit together? I want to compose!” OMG, then all sorts of other little tools that control other things came around, and I wanted to wrap them up in a big hug. A big smart hug, that knows just how they like to be hugged.
Crowbar 1.x originally only hugged Chef. And even only hugging Chef, it did MORE than Razor and Cobbler do (still today) combined. And it did it all in a way that’s not “enterprisey” and is just clear and makes sense. But it didn’t get all the way to that “composable RunDeck” thing that I was looking for.
So we wrote OpenCrowbar. And now it does.
Yes, this is hysterically historical. I’m keeping it here for safe keeping.
Control Tier Authentication and Authorization: Files, OpenLDAP, and Pass Through to Active Directory
You want to enable flexible authentication and authorization schemes for your Control Tier server.
*# Control Tier first checks the “fileRealm” files for usernames, passwords and roles.
*# On failure, Control Tier then checks against an OpenLDAP server which is setup to acts as a proxy for the corporate Active Directory, while also providing it’s own branches for Control Tier roles (and any other apps.)
Control Tier --> files -> OpenLDAP --> Active Directory
(users (roles) (users)
ou=roles,dc=corp,dc=example,dc=net <-- OpenLDAP
ou=people,dc=corp,dc=example,dc=net <-- Active Directory
Well, I guess it had to come to this. Rob Hirschfeld brought up the wonderfully preposterous notion of puppies growing up to be dinosaurs. And as a good scientist, and a profound thinker in DevOps, Rob’s statement is based upon his direct observation. He states that our most beloved pets can become tyrants (Tyrannosaurus Rex, aptly named) in our lives in operations.
I hack on Crowbar a lot. And here’s how I run my show:
1) dev/build box running ubuntu-12.04
2) Crowbar Admin box running whatever latest stuff i just built – and mostly works
3) a test node box, where I used Crowbar to deploy whatever I’m working on
4) another test node box, where I’ve used crowbar to deploy what I’ve been working on.
Here’s a few paragraphs of my thoughts about Functional Operations. By Functional Operations I mean that which emerges out of the meeting of “golden images” (delicately crafted base images that once deployed need config management) and “config management” (the config data and rules for applying it to a live golden image.)
As the “golden” image itself becomes integrated into the config management, it changes just like any other variable in the config management database. What’s changed in our toolkit? What benefits do we get?
It’s going to take some time to understand and articulate the full awesomeness of Crowbar 2’s approach to DevOps. One of the ways is to envision “Functional Operations,” similar to “Functional Programming”… this is early, but it’s a peek at our thinking. Paraphrasing Parliament Funcadelic: “Make my Func the FuncOps, I want to get FuncOps.”
What Erlang teaches us about orchestration.
Erlang’s design allows for intergalactic scalability and concurrency. Let’s riff off of a great design!
As tools like Docker eliminate much of the slowness and immutability of “golden images” and more robust config managers like Enterprise Chef reach further out across the datacenter, three thoughts come to mind:
Implicit roles must exist on a node to satisfy the dependency, while Automatic roles must exist somewhere in the deployment to satisfy the dependency.