1. Thinking in Terms of a Data
Center Operating System
Weston Bassler
Systems Engineer, Klarna Inc

2. Who am I?
Weston Bassler, Systems Engineer, Klarna Inc
● currently working at Klarna, a new startup in Columbus, as a Systems Engineer.
Previous experience as a Cloud and Linux Engineer for LexisNexis and Verizon
Wireless.
● Highly Involved in Linux and Open Cloud Technologies
● Lover of Gifs and Memes

3. What I will be Discussing
● Data Center Operating System?
● Quick Introduction to Apache Mesos
● What makes it so interesting?
● Current ways we are trying to utilize
● Demos!!!!
○ Launching an App with Marathon
○ Scaling your App properly
○ Jenkins on Mesos
● Ways to get started using it

4. Data Center Operating System
● What is it and what do you mean?
○ All of the machines of your DC and treating it as a single Machine
○ Abstracting resources into a single pool
○ CLUSTER ALL THINGS
● What problem(s) does this solve?
○ Less complexity of managing multiple nodes
○ Better utilization of your resources
○ More control over resources
○ Ease of Deploying and Scaling Apps
● How do I acheive this concept of a “Data Center Operating System”?

5. Enters The Apache Mesos Project

6. Mesos Explained
● What exactly is Mesos?
○ From mesos.apache.com - “Apache Mesos abstracts CPU, memory, storage, and other compute
resources away from machines (physical or virtual), enabling fault-tolerant and elastic distributed
systems to easily be built and run effectively.”
● Master/Slave Architecture
○ Zookeeper elects a Leader
○ Masters tell the Slave(s) what to do
○ Slave(s) are the workers
● Frameworks Manage Tasks/Services

7. Bigger Picture

8. How Does Mesos Work?
source: Anton Kirillov

9. So why is this interesting?
● Get the most out of your infrastructure -- Utilization
● High Availability / Fault Tolerance / Peace of Mind
● Containers! -> Speed, Flexibility, Isolation, Docker, Docker, Docker
● Scalability -- Nodes and Apps
● Ease of Use -- Web UI for ALL & Native Clusterting
● Use of Frameworks -- Hadoop, Kubernetes, Chronos, Marathon, Spark……

10. Some Examples
“Launching a Docker
container is so yesterday.
Today, it's all about 50,000
Docker containers...
launched in 100 seconds...
on a Mesos-powered
cluster.”

12. Another Example
Apple and Siri - Apple
redesigned the Siri Infra to
run on Mesos. They
developed a Framework
called JARVIS which acts in
the same way as Marathon.
100 different Services
Stores Data on HDFS

13. What made me interested?
● The Use of Containers
● Being able to Scale and Manage Containers So Quickly
● Fault Tolerance
● Container Orchestration
● PaaS

14. Demo 1
● Launching an App with Marathon
○ What is Marathon? Overview
○ API/JSON
○ Docker/Mesos Containers
○ Launch Script

15. Demo 2
● Scaling an App on Marathon
○ From the UI
○ Killing Tasks
○ HAProxy
○ Marathon API -> Examples from Git Repo

16. ● Jenkins Mesos Plugin
○ What is the Plugin?
○ Take through the process Jenkins Configuration
○ Create and Run a Jenkins Job --
■ Dreaded “Hello, World”
■ Using Docker to build Docker
○ Show Jenkins Job running on Mesos
Demo 3

17. Ways to Get Started
● http://mesos.apache.org/documentation/latest/
● Books:
○ Apache Mesos Essentials - By: Dharmesh Kakadia
○ Mesos In Action - By: Roger Ignazio
● Visit My Github Page
○ Mesos Sandbox: git clone https://github.com/geekbass/mesos-sandbox.git
● Contact Me!!!
○ wbassler@linux.com
○ LinkedIn: Weston Bassler
○ @w_bassler
● Companies Using Mesos

18. Questions?