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Cisco automatically deleted VMs hosting WebEx Teams

By Simon Sharwood on Oct 5, 2018 11:36AM
Cisco automatically deleted VMs hosting WebEx Teams

Causing week-long service outage.

Cisco has revealed why its WebEx Teams cloud collaboration service went down: it deleted its own virtual machines.

WebEx Teams went down on September 25, with the outage extending past a week in duration.

In a statement, Cisco admitted that “the service interruption was the result of an automated script running on our Webex Teams platform which deleted the virtual machines hosting the service.”

"This was a process issue, not a technical issue.

“We continue to investigate the causes of the script being run, however we are confident that this is an isolated incident and processes are in place to prevent any recurrence."

iTnews understands that WebEx runs in AWS, but the cloud service is blameless. The fault here is all Cisco’s.

Clearly this is a significant failure of processes at Cisco: it just should not be possible to delete assets of such importance.

But Cisco is not alone in breaking itself with bad scripts: in late August 2018 IBM’s cloud was unable to provision new instances for around eight hours.

Big Blue’s incident report said the cause was “a change …  made to one of the scripts that creates the device host names. This change inadvertently resulted in the device host names not resolving and subsequently the authentication issues.”

Cloud services are promoted as more resilient than it is possible for most organisations to create by themselves and cloud operators promote themselves as possessing operational smarts that make that resilience possible. Clearly those claims need to be tested.

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By Simon Sharwood
Oct 5 2018
11:36AM
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