Category Archives: computers

File server permissions change auditing.

We’ve had some issues with admins improperly applying permissions in the past, and in recent times as well. Because of this, we’ve decided that maintaining permissions change logging to determine who it is that’s having issues learning how to apply permissions can get some extra training on how to appropriately set file ACEs. The issue with doing this is that it generates ~40GB of compressed Windows logs daily, or closer to 100GB uncompressed.  So, how can we use PowerShell to parse through the binary logs, store the info we need, and then get rid of the relatively gigantic evtx files?
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ZFS on Linux NFS shares lost at reboot

On several occasions NFS has inexplicably stopped working with my ZFS shares under ZFS on Linux on Ubuntu Server 14.04×64. It seemed to happen every reboot, after checking the sharenfs property on each of the ZFS FS’ I found they were set properly, but still clients were getting access denied when trying to mount the share. Other times, even when they were able to re-mount the share they wouldn’t do so unless I manually triggered it.
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Exchange 2013 2007 CoExistence Frozen Transport Queues

We’re in the middle of an Exchange 2007 to 2013 On Premise migration, and we haven’t been having the best time. After a major mail crash in 2011, every time we’ve attempted to move off the recovered server, either to Exchange 2010 or to a freshly built Exchange 2007 setup, we’ve encountered major, migration stopping issues.
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Full home audio without iTunes

I want to have speakers in every room of my house, and I want them to be able to play the same stations, or different ones. Basically I want to have digital FM radio across the whole house, so that as I walk from the living room, to the back yard the music doesn’t skip a beat. This is currently offered by Sonos at a ridiculous price, and was offered until 2012 by Logitech, with Squeezebox at a less ridiculous price. Squeezebox being discontinued, I’m not willing to sink my money or time into that, and Sonos is too expensive.
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dcpromo fails with An error with no description has occurred on Server 2008R2

While working to get rid of all our 2003/2008 DCs to get our AD to a 2012 Native level I came across one 2008 DC that was extremely difficult to rid ourselves of. It was created about a year ago to replace our 2003 FSMO master, and had been running without major issue since then. After building a new 2012 VM, and DCPromo’ing it, I transfered the FSMO roles to a stable server and set out to demote and decommission the 2008 machine. Upon running dcpromo from an admin shell, the system began to detect the ADDS binaries, and failed. The message it failed with was an extremely helpful “Failed to detect if Active Directory Domain Services binaries were installed. The error was: An error with no description has occurred.” Lovely.
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Bash script to automatically restart MySQL when website database connection is down

I’ve been noticing that periodically my MySQL service will hang and require a restart. It’s easy enough to SSH in and restart it, but I only catch it after the fact. So I wrote this little script which curls my website, sees that it’s down and restarts MySQL and shoots me an email with sSMTP. This only checks for the MySQL service not accepting connections from Apache. If there’s an error with Apache, or it’s not running this won’t do anything. Continue reading Bash script to automatically restart MySQL when website database connection is down