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Emulab/Cloudlab server downtime next week!
Friday, December 14, 2018, 1:48PM; posted by mike (27).

The time has come to upgrade the hardware of the two main CloudLab/Emulab server machines ("boss.emulab.net" and "ops.emulab.net"). In the process, we will be upgrading the OSes as well.

This is a big task that will take a long time just to move the data (10,000+ user/project filesystems on the ops node), and as such I would like to dedicate two days to doing it. Hopefully, it will take less than one, but...stuff happens.

During the time that these servers are down, experimentation on the testbeds will be affected. The primary CloudLab/Emulab portals will be inaccessible and you will not be able to start new experiments or terminate existing experiments. Experiments already running on the Emulab cluster nodes will likely hang due to loss of the shared /proj filesystem or other centralized services. Running experiments at the Clemson/Utah/Wisconsin clusters will likely continue to run, but you will not be able to use the web interface to gain console or shell access, or power cycle the nodes. You should still be able to ssh in directly from a remote machine.

Anyway, I am proposing to do this on Wednesday and Thursday, December 19th and 20th (two weeks from yesterday).

Let us know if you have serious objections to these days.