OpenStack Summit, Vancouver, 2015 talk Title: Gorillas in the mist - Enterprise Workloads on OpenStack

1. Gorillas in the
mist
Enterprise Workloads on OpenStack

2. Gerd Prüßmann
Cloud Architect
Deutsche Telekom AG
@2digitsLeft
g.pruessmann@telekom.de
Sriram Subramanian
Founder & Principal Cloud Specialist
CLOUDDON
@sriramhere
sriram@clouddon.com

3. Agenda
Brief History
Toolbox
Lessons Learnt
Deutsche Telekom Overview
Overview of Workloads
Workload #1
Workload #2
Lessons Learnt
Next Steps

4. Brief History
● Compute Intensive
○ E Commerce
○ Research
○ Service Provider
○ Streaming
● Large Storage
○ Media
● Compute + Storage
○ Bio Informatics
○ Analytics

5. Toolbox
● Cloud Native Applications Unicorns
● Port
● Rewrite/ Partial Rewrite
● Smart Packaging
● Backoff :)

6. Lessons Learnt
● Start from Workloads
● No One Rule Fits All
● Wrapping in VM != Cloud
● It’s OK to leave some out

7. • Business Market Place (BMP)
• https://portal.telekomcloud.com/
• SaaS offering - applications from Software Partners (ISVs)
and DT offered to SME end customers
• Cloud platform based on Open Source technologies only
(OpenStack, CEPH, Ubuntu)
• Project started early 2012 with OpenStack Essex, CEPH
• 1st OpenStack platform in production since Q1/2013
• complements other platforms: Enterprise clouds based on i.e. VMware / SAP Hana,
OpenStack based Cisco “Intercloud”, OS platforms for NFV, research, IaaS
Deutsche Telekom Overview

8. OVERVIEW OF WORKLOADS
• Enterprise Social Network
• Enterprise Cloud Storage TeamDisk
• Payroll Management Sage
• Enterprise Resource Planning SilvERP
• Customer Relationship Management
• Invoice Management Fastbill
• Knowledge Management
• Enterprise Content Management Lexmark Enterprise Software, EasySyS
• Project Management Projecterus, Teamlike,
weclapp
• Contract Management
• Document Management Mobile Devices PadCloud

9. all applications are completely different w.r.t.
• technologies used
• tenant size / resource usage
• scalability / elasticity
• business case
• number of users / target groups
• operational maintenance efforts
• level of cloud awareness
OVERVIEW OF WORKLOADS

10. SERVICE MODELS
• Two models: Managed model vs. Hosting model
• Cloud resources
OS Tenant, instances, storage (RAM, persistent Volumes / S3)
• Reference and production tenants
• PaaS services / support
VPN, load balancer, proxy server, email gateways, diff. databases, mirror,
puppet master, DNS, NTP, backup, monitoring
• Individual integration / onboard support

11. WORKLOAD - BUSINESS CLOUD STORAGE
• Application developed by DT
• Enterprise secure online storage for
documents, images etc.
• web app, mobile app, PC SyncClient available
• Petabyte storage cluster (CEPH)
• integrated in some other applications on BMP
(easily exchange documents between apps)
• bundled with every business users
mobile phone contract

12. WORKLOAD - BUSINESS CLOUD STORAGE
Application consists of
• Apache web servers (memcached)
• JAVA application servers
• ActiveMQ servers
• Transcoders (image processing)
• MongoDB servers
• Load balancers

13. WORKLOAD - BUSINESS CLOUD STORAGE
Before onboarding: Non-dynamically scalable installation on physical servers
• Traditional 3-tier deployment
web-, application-, database servers (master-slave),
• DRBD replication
• Deployed on multiple huge servers in DC
• Expensive storage appliances (NFS)
• no configuration management / automated installation

14. WORKLOAD - BUSINESS CLOUD STORAGE
After onboarding: dynamically scalable tenant on OpenStack
• Load balancers in front of each layer (web service / application server / API)
• Deployed on multiple standard KVM VMs on OpenStack
• Multiple MongoDB database servers
• all persistent volumes on CEPH RBD
• NFS replaced by object storage (CEPH S3)
• configuration managed by Puppet

15. WORKLOAD - BUSINESS CLOUD STORAGE
TOOLBOX
• small partial rewrite (cloud S3 storage backend, MongoDB)
• smart deployment (Load balancers)
• configuration management (puppetized) / automatic installation introduced
• scalable and highly available storage backend introduced (CEPH, RBD/S3)
Result: Scalable enterprise application on cloud

16. WORKLOAD - ENTERPRISE SOCIAL NETWORK
• ISV’s enterprise social network application for private
cloud offering
• originally “on premise” solution
• huge customer specific modifications
• multiple Single-Instances for private cloud customers
(just one VM for every App Tenant)
• “tenant VM” contains application and services
• every new “customer tenant” gets a single, new VM

17. WORKLOAD - ENTERPRISE SOCIAL NETWORK
onboarding actions:
• ISV implemented / replaced storage backend with S3 (CEPH)
• configuration management (puppetized) introduced
• “cloud manager” service introduced by the ISV to provision, reboot VMs (single
“customer tenants”)
First user login starts the instance - last logout closes down VM
• “cloud manager” portable to any cloud platform!

18. WORKLOAD - ENTERPRISE SOCIAL NETWORK
TOOLBOX
• partial rewrite - adoption of cloud S3 storage backend
• additional development - cloud manager
• smart deployment with “containerized” VMs to prevent heavy changes on a pet /
on premise app
• accepted limitations of scalability and availability (VM reboots <1min)

19. LESSONS LEARNT
• Enterprise apps: no cattles - only pets
• Enterprise apps / sector software:
specific target groups / limited number of users / not millions of users worldwide
• “Cloud native” from ISVs point of view:
rewrite app - huge investments - no business case - no ROI
• Majority of enterprise apps are not well prepared for cloud
(Legacy, stateful, not cloud aware, no DevOps technologies)

20. LESSONS LEARNT
• Initially increased integration efforts on cloud or OpenStack
• Good toolset to ease the migration to cloud:
Partial app rewrite (to integrate cloud technologies)
changed deployment and distribution architecture
configuration management
change processes
• Adjust installation, maintenance processes of the apps

21. Next Steps
● App Ecosystem Work Group
● Win the Enterprise Workgroup
● OpenStack User Stories - SuperUser
● Cloud Native Applications Whitepaper

22. Gerd Prüßmann
Cloud Architect
Deutsche Telekom AG
@2digitsLeft
g.pruessmann@telekom.de
Sriram Subramanian
Founder & Principal Cloud Specialist
CLOUDDON
@sriramhere
sriram@clouddon.com