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bio website kbrandt.com
location Hollywood, FL
age 32
visits member for 5 years, 10 months
seen 9 hours ago

I'm the director of site reliability at Stack Exchange. I'm also the co-author of the bosun monitoring system and sometimes blogger on the Server Fault Blog.

@KyleMBrandt


Dec
21
comment Routing selection: specificity vs metric
@jch Does quagga and co. mimic AD by setting the metric accordingly? (Not that your point isn't vital, just curious)
Dec
11
comment Moving the SecondaryName Node in a Cloudera HBase Cluster
@growse: No idea - if I could answer that I wouldn't be asking random people on the internet how to manage my HBase cluster ;-)
Dec
11
comment How can I monitor disk IO load on a Windows 2008 server?
I would do Physical Disk -> Current Disk Queue Length.
Dec
10
comment Does Cloudera Manager need ongoing Root Access?
As a follow up, my experience has verified this to be correct.
Dec
4
comment Haproxy: Slow responses for static content
What patrick said, in particular we will want to see the timers section of the log for these slow requests.
Dec
3
comment How are CPU time and CPU usage the same?
@MichaelHampton: Will read and correct the answer in the morning. Won't be offended by any edits either :-P
Dec
3
comment How are CPU time and CPU usage the same?
@MichaelHampton: lists.kernelnewbies.org/pipermail/kernelnewbies/2011-March/… seems to indicate that as well
Dec
3
comment How are CPU time and CPU usage the same?
@MichaelHampton: I think maybe this starts to explain it: man7.org/linux/man-pages/man7/time.7.html . On my CentOS system CONFIG_HZ=1000 , and /proc/stat does return things in 1/100 of a second. So it seems like maybe the tick interval of the kernel and user space reporting may not be the same.
Dec
3
comment How are CPU time and CPU usage the same?
@MichaelHampton on CentOS 6.5 sysconf(_SC_CLK_TCK) returns 100, am I missing something?
Dec
3
comment How are CPU time and CPU usage the same?
Kasperd, understand that. The CPU operates at that frequency though.... rewrote it
Nov
25
comment Add a Message to be Displayed During Shutdown of CentOS 6 and 7
Ah nevermind, just needed to make the sys lock
Nov
25
comment Add a Message to be Displayed During Shutdown of CentOS 6 and 7
Tried making an init script that writes to the wall on runlevel 0/6 , however it looks like the disconnect from ssh happens faster than the wall write (even though the reminder script is K01 and sshd is K25), guessing these are not serial ....
Nov
25
comment Add a Message to be Displayed During Shutdown of CentOS 6 and 7
@TheCleaner: It will throw at least a alarm mostly likely (and that is false alarm if someone has run the shutdown command).
Nov
25
comment Add a Message to be Displayed During Shutdown of CentOS 6 and 7
Sorry if my goal isn't clear. The idea is that if someone types "shutdown" that person gets a message on the screen that reminds them to put the box in maintenance on the host. So the person performing the shutdown wouldn't be adding the message
Nov
25
comment TCP Window Scaling Problem over MPLS
Maybe look at / post a Stevens Sequence Graph (can be done from wireshark of the two transfers.) Also maybe set the data to be transferred via iperf to be the same total size to make things clearer.
Nov
19
comment Bosun Stuck Alerts?
Also for now you can just "reset" all the state of the system by stoping bosun, deleting bosun.state, and then restarting -- as a nuclear workaround.
Nov
19
comment Bosun Stuck Alerts?
Bug report for the project.....
Nov
19
comment Bosun Stuck Alerts?
Closing the question since the answer "You can't, it is a bug". But thank you, this was an issue that needed to be reopened. If something seems "Broken", best bet is to just submit an issue to github. This better for "How do I X in bosun?"
Nov
19
comment Bosun Stuck Alerts?
It is a bug, looking for it now...
Nov
5
comment Scale HAProxy for more than 64k websockets
@Bastien974: You understand correctly - it works.