Join us November 13-15, 2018 in

Berlin, Germany

The next Open Infrastructure Summit is going to be in Denver, April 29-May 1. Check out the agenda.

Event Details

Workday Private Cloud: Operational and Scaling challenges of growing from 50K to 300K

Workday is a leader in enterprise human resources software-as-a-service (SaaS) solution and has been active in the OpenStack community for many years. Driven by the demand of rapid customer growth and increased security needs, Workday’s OpenStack cloud has grown from 600 server fleet in 2016 to 4600 server by the end of 2018.  We shall have 45 OpenStack clusters hosting more than 22, virtual machines, dispersed across 5 data centers in different geographical regions using 2PB of memory.

This talk presents:

  • The architectural evolution that we went through to support business and scalability demands.
  • The operational challenges for supporting many clusters and need for federated identity and image services.
  • Operation metrics collected from the production environment and future plans to keep improving operational excellence.
  • How we achieved performance demands of booting thousands of virtual machines within minutes by extending nova APIs to cache images on the compute nodes.

What can I expect to learn?

From this talk, attendees can learn: 

- The operational challenges of managing multiple clusters

- Best practices for improving OpenStack API performance

- How to scale an OpenStack cluster without compromising customer SLA (Service Level Agreement).

Wednesday, November 14, 11:50am-12:30pm
Difficulty Level: Intermediate
I am member of the Cloud Operations and Infrastructure teams for one of the lead SaaS provider in Finance and human resources management, Workday. My current role as OpenStack user is giving me a different opinion about what OpenStack should integrate and how it can be consumed easier and more scalable for both Service Provider and Entreprise sectors. I have provided my... FULL PROFILE
Workday, Inc.
Imtiaz is a Principal Software Development Engineer at Workday. Imtiaz comes with over 18 years of experience in developing enterprise and network management applications. At Workday, Imtiaz is involved with building an Openstack based private cloud and developing solutions for migrating existing applications to this cloud. Prior to joining Workday, Imtiaz served at Cisco for over 12... FULL PROFILE
The last five years at Workday has been a turmultuous and fascinating ride for Howard helping to craft a Private Cloud based on OpenStack. Initial prototype based on the Grizzly release, gave way to multiple clusters on different continents hosting Workday customers, with plans to scale to almost 5,000 servers this year. With over thirty years of programming experience from C to Clojure, he... FULL PROFILE
Workday, Inc.
My journey with OpenStack began back in 2011, with the Cactus release, working with Nova and Swift in Dell's Cloud R&D. In 2013 I moved to Workday as a Senior Software Engineer and helped building our private cloud platform from its inception with the Grizzly release and a few servers to our current HA setup, managing over 4,600 hosts across 5 data centers. Over the years I worked in... FULL PROFILE
Workday, Inc.
I have been working on the Cloud Engineering team at Workday for 3+ years, where I help to deploy and scale our private cloud built on OpenStack. I am passionate about Cloud technologies, Internet of Things, and large-scale distributed systems. I received my BS and MS in Computer Science from the University of California, Santa Barbara, focusing on Cloud Computing reseach.  FULL PROFILE