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Imager Technical Information

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Update policy applies to Imager computers on subnet 54.
The calendar on the Conference Freeze Dates page will list the freeze periods and the machines to be frozen during each period. If you would like your machine to be frozen for an upcoming conference please add your machine name, the conference, and the conference deadline to the calendar. Imager tech members will look at this page monthly to decide upon freeze periods. The page will also list conferences for which machines do not need to be frozen, and these conferences will be indicated as "no freeze". Tech staff will check the calendar for freeze periods and will not update the listed machines until the freeze period is over. No updates (including security updates) will occur on listed machines during their freeze periods.

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Vulnerability patching: During the freeze period, if there is a vulnerability that requires an upgrade, there are 3 options:
- patch the machine and see if it works
- take the machine off the network (no internet or cs access)
- move the machine to subnet 54 which is the subnet for user administered boxes

There will be a 48 hour notification on updates during non-frozen times. The updates will be tested on 'tom' first, and 'tom' will generate an email to imager-tech when it is upgraded.
Look at the file /var/log/yum.log to see a list of recent updates to Linux machines.