Recently I’ve been noticing a trend where organizations with Xsan (and sometimes StorNext) are replacing older metadata LUNs with newer faster LUNs. This often involves replacing an Xserve RAID that sometimes has tens of thousands of hours of spin time on them with a Promise E-class or an ActiveRAID. The trend isn’t just with people I interact with though, as Duncan McCracken mentioned this at MacSysAdmin 2010 and Kuppusamy Ravindran (aka ravi) mentioned it back in 2008 in a post at Xsanity (he actually went way further and looked at actually splitting Metadata and Journaling, a post that is definitely worth a read). But as the pace seems to quicken…
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Change SSH Port
I am getting so sick and tired of seeing brute force attempts against SSH traffic. Let’s just change the port that it listens on and then miraculously watch all those brute force attempts disappear. There are a few different ways to go about this in Mac OS X. The first is to just change the port entries in /etc/services (mileage may vary). To do so open /etc/services in your favorite text editor and look for the lines that begin with ssh. These should look something like the following: # Jon Postel ssh 22/udp # SSH Remote Login Protocol ssh 22/tcp # SSH Remote Login Protocol # Tatu Ylonen Just change…
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Macworld 2011
Macworld 2011 will be this upcoming January 26th through January 29th. With sessions ranging throughout the Mac OS X ecosystem there is surely going to be something for everyone. For those interesting in attending Macworld 2011, I will be there and presenting on a little bit of a different topic than what I usually talk about at Macworld: Home Automation. It’s not going to be a surprise to many of the https://krypted.com/ readers who have seen posts here and there about extending the capabilities of what your Macs can manage from the digital into the physical. This session will be a little bit of product awareness, a little bit of…
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Get your Comic On at FallCon (Going on Now in MSP)
FallCon is the Falls biggest comic book extravaganza in Minneapolis. And it’s happening today, October 16th at the Minneapolis State Fairgrounds. If you’re like me and you are still trying to get over the fact that you horfed down too many corn dogs at the State Fair a little while back then go ahead and get over it and head down. There’s free parking, a low cover of $7 (bring a food shelf donation and drop that by $1), over 100 comic book personalities, lots of places to pick up those geeky t-shirts that will inspire awe in all the women you meet (or not) and schwag (aka prizes). See…
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xkcd does it again
Disturbingly accurate.
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Removing A LUN Label in Xsan
In Xsan Admin you can easily label LUNs that are available on your Fibre Channel fabric. Using the cvlabel command, you can also easily label a LUN that isn’t on a Fibre Channel fabric. Labeling a LUN writes data to the LUN, thus allowing Xsan to somewhat mark its territory (insert vivid imagery of an Xsan shaped like a dog taking a whiz on a poor thumb drive). If you then look at that LUN from a Mac OS X system without Xsan installed, the computer will have greyed out options in Disk Utility and will not be able to treat the LUN as a “disk.” You also can’t use…
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Change Listening Port for RDP
In Windows 7 (and previous versions for that matter), you can change the port that RDP listens on for new Remote Desktop connections. To do so you would fire up regedit and then browse to the following key: HKEY_LOCAL_MACHINESystemCurrentControlSetControlTerminalServerWinStationsRDP-TcpPortNumber Here, you would change the PortNumber to a new decimal value that is the port you wish to listen on. Save, reboot and you’re good to go.
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chmod -x chmod
And here I thought I had some zingers… chmod -x chmod View more presentations from José Castro. Thanks Naveen@UUASC!
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Your Mother Was a Hamster
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bdb and netatalk
I’ve been finding recently that practically every netatalk implementation is using bdb instead of cdb (the default), due to the fact that cdb seems to be more susceptable to corruption. To make this change, you open the netatalk configuration file at /etc/default/netatalk. Here you will see the following options: ATALKD_RUN=no PAPD_RUN=no CNID_METAD_RUN=no AFPD_RUN=yes TIMELORD_RUN=no A2BOOT_RUN=no To switch from cdb to the dbd scheme change CNID_METAD_RUN = no to CNID_METAD_RUN = yes. Save the netatalk file and then restart using the ‘netatalk restart’ command (with sudo or as root): /etc/init.d/netatalk restart No further changes need to be made in AppleVolumes.default or afpd.conf, but do be sure to check that the users…