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Date | Outage duration | Cause | Official link | ChemIT notes |
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2/27/2014 | 2 minutes | ? No official info on when the power outage occurred, or its duration. | Some delayed time-stamps, from the IT folks: | Michael led our effort to initially evaluate and restore systems, with Oliver adding to documentation and to-do's. Lulu completed the cluster restoration efforts. |
1/27/2014 | 17-19 minutes | ? | Lulu, Michael, and Oliver shut down headnodes and other systems which were on UPS. (Those systems non UPS shut down hard, per usual.) | |
12/23/2013 | 2 minutes | Human error? | Terrible timing, right before the longest staff holiday of the year. | |
7/17/13 | Half a morning (~2 hours) |
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- Because we don't know the answer to this question following any specific power outage, we are reluctant to turn back on servers right away. Instead, we like to wait ~10-25 minutes.
Reboot switches
- 8 switches support the clusters (out of 12 in the room).
Start headnodes, if not on already
- Only a few are on UPS. Those can obviously be left on.
- None should be set to auto-start on power-off.
Confirm headnodes accessible via SSH
PuTTY on Windows
Use FMPro to get connection info?! (not the right info there, though...)
Menu => List Machine / User Selections = > List Group or selected criteria
- Machine function => Server HN
Start compute nodes
If nodes done show up, consider:
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