Created
August 26, 2015 19:48
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Macs at SLAC
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1. Active Directory, which is enabled by this, may break Kerberos/kinit/AFS from your mac. Mostly, kinit is used by Active Directory and kinit remembers the last domain you used if you omit the username and password, and your mac will frequently kinit to [email protected], so when you go to kinit without parameters, it will kinit to the windows kerberos server. I think you may be able to just alias kinit to 'kinit [email protected]', provider you have the correct kerberos configuration (I can provide you with one). AFS installation is tricky, but it does in fact work on macs. | |
1a. I've noticed long delays occasionally when logging in/out of my machine, and this seems to be exacerbated when using a Mac remotely over spotty wifi. This is apparently a known issue on Macs. | |
2. A Case-Insensitive file system is the default on a Mac, but if you manually reinstalled your OS with a case-sensitive file system, CrashPlan won't work out of the box. There is a fix for this: | |
http://support.code42.com/CrashPlan/Latest/Troubleshooting/CrashPlan_App_3.6.3_Unable_To_Connect_To_Backup_Engine_On_Mac | |
3. On at least one occasion, I've seen my SSH server running locally disabled (knows as 'Remote Login' under System Preferences -> Sharing). This may have been a fluke, but it broke some tools on my machine which work over SSH. | |
4. SLAC requires full disk encryption and an always-on antivirus (Symantec). I wrote a benchmarks to try to examine the potential performance impacts of this. One benchmark was writing out random data to a large file, and the other wrote out random data to many small files with several threads. Both benchmarks were ran with on a vanilla machine, AV only, and AV and encryption both enabled. On newer macs, the performance penalty has not been observed to be higher than ~5%. On older Macs with spinning hard drives or those without adequate hardware encryption acceleration (Usually macs made prior to mid 2011), it's possible there may be a more significant performance penalty. There's also small performance issues if downloading many small files via HTTP, though it was unclear to me what the cause was. |
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