What: Rackspace will be performing an upgrade of OpenStack on the private cloud that OpenDaylight uses for CI. An entire environment shutdown will be needed due to the nature of the upgrade path
When: November 26, 2016 (2016-11-26) from 12:00 - 18:00 PT (2016-11-26 20:00 - 2016-11-27 01:00 UTC) Why: We're still early enough in the Carbon cycle and there are presently SRs that are scheduled right at that time that taking an extended outage shouldn't be a problem. Since the private cloud is presently running on the Kilo release of OpenStack it's time to start getting it updated to newer versions. Rackspace will be performing system level updates as well as upgrading OpenStack from Kilo to Liberty. An upgrade from Liberty to Mitaka will be scheduled at a later time Impact: Since our private cloud environment is so small it is not feasible to do a rolling cloud restart at this time. In particular, since we have systems that use cinder storage and our current cinder cluster is very small, we cannot do rolling upgrade / restarts on the storage nodes which means that any instances that are using that storage _must_ be turned off during the updates. Since the nodes that are the most strongly impacted are Gerrit, Nexus and Jenkins we're taking the advice of Rackspace and will be shutting down all CI services when Rackspace gets to the phase of the updates requiring system reboots. What the community will see during the window are some instability in getting to Gerrit as the hot updates are being applied. Eventually all services will be brought offline as the hardware gets rebooted. Jenkins will be placed into maintenance / shutdown mode near the start of the window so that any running jobs will have an opportunity to finish but new ones will not start. Notices will be sent to the mailing lists and to #opendaylight on Freenode at the start and end of the maintenance. -Andy- -- Andrew J Grimberg Systems Administrator Release Engineering Team Lead The Linux Foundation
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