OpenStack Summit May 2015 Vancouver has ended
Wednesday, May 20 • 2:40pm - 3:20pm
Compute Waste Management for Operators: How to (nicely) reclaim what is yours in a Private Cloud environment

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Compute Capacity Management

In private cloud environments, capacity management is a necessary evil. Cloud resources are not without cost, but they can seem that way to end-users. Zero capacity means “the cloud is broken!” to some, which could decelerate cloud adoption within companies. In this talk we will provide real-world examples on how eBay Inc has significantly reduced waste within our own cloud.

Mitigating or Eliminating Waste - High-level Strategies

  • Smart Reclamation using Telemetry or other tools (Cloud Minion) -and/or-

  • Show-back -and/or-

  • Charge-back

Identifying Waste

A deep look at what criteria and metrics can be collected and baselined against to identify underutilized compute.


  • Telemetry

  • Cloud Minion

Reporting Framework

  • General strategies around engaging with waste owners.

  • Tell the users, and tell their managers also, when you detect compute that may be underutilized

  • Don’t stigmatize - these aren’t abusers, they are enthusiastic users - this is a good problem to have and a fun one to solve.

  • Use a “lease” concept to ask users to renew their instances when low utilization is detected

  • Cycles to consider: report, halt, delete

  • Delay between cycles: general thoughts and best practices


eBay Inc’s Cloud Minion tool has been used to reduce compute waste for several months with great success, reclaiming (redacted) dollars worth of otherwise wasted compute. Ask the developers and experts at eBay Inc questions on how we accomplished this, and gain a deeper understanding of the open source Cloud Minion project.

avatar for Kalin Nikolov

Kalin Nikolov

Sr. Cloud Engineer
Kalin Nikolov is a Sr. Cloud Engineer on the PayPal, Inc. Cloud Reliability Engineering team, responsible for developing automation to raise the bar in terms of cloud availability and reliability. Kalin has taken part in dozens of OpenStack cloud deployments and upgrades and has... Read More →

Wednesday May 20, 2015 2:40pm - 3:20pm
Room 205/206/207

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