426 reputation
1415
bio website brandon.si
location Richmond, VA
age 28
visits member for 4 years, 6 months
seen Feb 15 at 22:20

Brandon Simmons is a flutist, photographer and hacker living in Richmond, VA. .

Some of his open source code is on github and on hackage, and you can check out my SO careers profile for details.


Oct
22
comment apt-get update directly after boot results in many Ign and Hit, resulting in 'no installation candidate' errors
Argh, of course. I now see my failed update is fetching from repos like "archive.ubuntu.com"; that aren't even in my source.list (once I check on it). Thanks!
Jan
5
comment How does changing a GPG encryption key's passphrase work?
Duh, thanks both of you. Don't know why I didn't realize that.
Oct
10
comment Reliably and quickly migrate data to a RAID array
Brilliant, thanks. And thanks for your work on the alestic AMIs! I'll be "testing my migration plan" on servers running them :)
Sep
12
comment Can SQLite be used with GlusterFS?
More to add: just ran your test that doesn't use explicit locks concurrently on a single NFS client, and locally on the NFS server. The NFS client fails on "count.sql" after ~30 runs.
Sep
12
comment Can SQLite be used with GlusterFS?
Noticed your edit. This latest version with explicit locking works for me with three clients/one server. In the previous version I get frequent "unable to open database file" errors, any idea why? The usual explanation seems to be improper permissions of the parent directory, but not here.
Sep
9
comment Can SQLite be used with GlusterFS?
Thanks for this! Did you file a bug report or get a response from any gluster developers on this issue?
Jul
7
comment Do I need to run ntpd in my EC2 instance?
I just noticed a several minute drift in one of my servers in which /sys/devices/system/clocksource/clocksource0/current_clocksource is set to xen as well
Jun
3
comment Where does the name in the “COMMAND” field of `ps aux` come from?
Thanks a lot for the answer
Mar
23
comment Creating and deploying a Linux virtual appliance
Thank you. Great answer to a pretty vague question.
Mar
16
comment Using NOPASSWD for specific commands in sudoers file, PASSWD for all others
That seems to do it. Thanks!
Mar
16
comment Using NOPASSWD for specific commands in sudoers file, PASSWD for all others
I get sudo: unknown defaults entry nopasswd'` when running commands in the list. I'll play with it and see if I can figure out what it's doing.
Feb
15
comment Re-gaining root access to an EC2 EBS-boot image
Haven't had the opportunity to test this, but marked as answered since I assume it will work. Thanks.
Feb
10
comment Re-gaining root access to an EC2 EBS-boot image
Thanks for the answer. I hadn't considered that maybe there would be no password set. Unfortunately passwd asks for my current password. I think the 'ubuntu' account may have been created with $ adduser --disabled-password ubuntu. Any other ideas?
May
1
comment How can I reset the permissions of /bin /boot /etc and /dev to orignal owner, Ubuntu?
I wasn't really clear in my answer, but the output of the command I displayed above shows in order: filename, user, group, for all the files not owned by root:root on my debian system. I imagine your system uses many, if not all of the same permissions. I don't know if there is a way to restore permissions e.g. with apt
Apr
17
comment How can I run a job when the server load is low?
Thanks, batch looks great. I decided to go with a homebrew solution since I realized I am more interested in disk IO.
Apr
12
comment What techniques do you use to design and scale a web app horizontally (in EC2)?
Thanks, I was hoping for more general discussion about this topic so I didn't include much info about our app. But since no one seems interested... we are a google-docs-style application and (at the moment) are storing user data in individual directories, each with an sqlite DB. We do this because our system will be both on and offline, and users can down/upload their data in this form.
Apr
9
comment Can SQLite be used with GlusterFS?
I would also like to know how this turned out for you. please do share if you ended up going this route.
Feb
24
comment AWS S3 Bucket Backups
if you're using a tool like s3cmd, it's no harder than it is to delete an entire directory tree with rm -rf
Jan
2
comment Files mounted over NFSv4 are owned by 4294967294, UIDs and GIDs match
Thanks for the response, David. Per my post, I have no_root_squash enabled. Do you have any more info about the idmapd.conf file?
Dec
5
comment Lightweight Revision Control for copying config files from a testing server to production server
Thanks for the reply. It's good to know more people are doing this.