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Kentaro Matsumoto, KDDI Corporation, Hyde Sugiyama, Red Hat, Inc
As telecom career, we KDDI have been managing thousands of physical servers and run various kinds of workloads. In our operation of such a huge environment, We are frequently required to shut down our servers for maintenance, but it is not easy to negotiate with our tenant users to allow downtime. To make it easier, we are developing the structure called "Zone Migration", using the framework of OpenStack project "Watcher". "Zone Migration" makes it possible to migrate tenants’ workloads from compute nodes and storage devices we want to maintain (source zone) to new blank ones (destination zone) efficiently, automatically, and with minimum downtime.
These requirements as follows are realized.
-A lot of VMs and volumes should be migrated within a limited time frame
-Operations should be automated, but also can be controlled manually
-Time and load of migration should be under control so that tenants’ systems will not be affected
We are proceeding with the project in cooperation with NEC and Red Hat, and developing this structure on Red Hat OpenStack Platform.