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January 2018

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Important - Avoid MacOS High Sierra Update for a few weeks
by Sundeep Rao 26 Jan '18

26 Jan '18

All, We are seeing a higher than normal number of problems with the latest MacOS - High Sierra (10.13.x). This update is causing problems ranging from frequent reboots to unrecoverable OS corruption. Our advice is to avoid updating to High Sierra for the next few weeks - but please do continue applying patches to MacOS El Capitan (10.11.x) and Sierra (10.12.x). Of course, always make sure that you have a good TimeMachine backup of your data before applying any patches or updates. If you have already updated to High Sierra successfully, there’s nothing more to do. If you have updated to High Sierra and are having problems, please let us know right away. If you have any questions, please direct them to www.purdue.edu/ecn/contactus - and we will respond as soon as possible. Thanks, Sundeep Rao ECN

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All linux servers to be patched and rebooted overnight
by Sundeep Rao 04 Jan '18

04 Jan '18

All, Please be aware that ALL ECN linux servers will be rebooted overnight (tonight) to patch recently announced serious security flaws. Please save all your documents and log off at the end of the day today to prevent data loss from open files. As more information about this flaw becomes available, we may have other mass patching and updating (with additional reboots) to do this month. Your patience during this time is greatly appreciated. Sorry for the inconvenience, -Sundeep ECN PS: Patches for this flaw are currently expected to have an initially estimated performance hit in the 20% range. Not exactly how we wanted to start 2018!

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