After a config change, I needed to debug these messages which began appearing in bursts in the Apache error logs: Error opening file for reading: Permission denied with no other information like filename or even timestamp. These occurred no more frequently than hourly. Using strace ran out of gas quickly because -etrace=file still had too…
While taking part in a storage install the last few days, including creating and deleting quite a few RAID groups and so forth, I’ve had to click on quite a few “Are you SURE?!” dialog boxes, even for completely idle, never-used LUNs. Here’s an idea for storage management folks: keep a bitmap of recently-accessed LUNs….
I’ve been reading the long thread kicked off by Luke Kanies’s email about the state of system administration as illustrated by the current tools. A minor subthread touched on why there aren’t more books about system administration theory, what that theory is, and so forth. A couple of mathematical topics were briefly mentioned, and it…
If you’ve ever run into this error while using Solaris’s lucreate to create an alternate boot environment and trying to exclude some directories: foo# lucreate -m /:/dev/dsk/c1t0d0s3:ufs -x /u01 -x /u02 -x /u03 -n s3 INFORMATION: path </u01/> filter specification ‘-‘ overridden by ‘x’ …and then it copies /u01 to the alternate BE anyway… or…
DCOP is KDE’s interprocess communication protocol. Conveniently enough,
developers are pretty good about exposing interfaces to it, and there
is even a shell binding. There are some awfully neat things you can do
with it from a shell interface. This script lists the URLs of all the tabs
in my Konqueror windows: Continue reading
Like most sysadmins, I make heavy use of email. I actually run a Cyrus IMAP server on my desktop and use fetchmail to grab mail from the company server, filter it through procmail for things like analyzing cron job output and emailed logs, and then hand it to Cyrus’s deliver program, which processes it through…
A different kind of tagging! If you’re getting home from LISA and have some of those spiral-bound paper tutorial notes, it’ll be easier to find them on your bookshelf and refer to them in the future if you “tag” them. I write the title and year and sometimes the author on both sides of one…