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bio website kbrandt.com
location Hollywood, FL
age 32
visits member for 5 years, 6 months
seen 4 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


Sep
20
comment Cluster failover and strange gratuitous arp behavior
Driver is: 9.8.42.0 , teaming is: 17.1.55.0
Sep
17
comment Cluster failover and strange gratuitous arp behavior
Saw the same thing this weekend with Intel ALB, Microsoft failover clustering, and SQL 2012 AlwaysOn on 2008R2. Didn't have a chance to try without teaming. But with Wireshark I observed the backup machine sending out ARPs claiming it still had the the virtual IP Well after the other had machine had taken the VIP over.
Sep
5
comment High Tq values for HAProxy
@Will: We wrote a service that takes syslog data via UDP, parses it with a regex, and inserts it into MS SQL Server. Each day gets its own table.
Sep
5
comment High Tq values for HAProxy
@Will: Okay, will leave this incase someone else has the same question in the future. My guess is a network / resource problem then. Have you checked dmesg and all the vitals? No issues with conntrack table filling etc?
Jul
30
comment HAProxy failing over to a “busy” page
Does this do what you need? serverfault.com/questions/406433/…
Jun
21
comment Tuning Linux + HAProxy
@react: What flags did you make haproxy with?
Jun
9
comment When using TCP load balancing with HAProxy, does all outbound traffic flow through the LB?
@mxx: That is usually called connection pooling (common between an app and its sql backend for example). The main advantage of that with SQL is that it can save time by bypassing connection creation and tear down. Don't see a big advantage here since these are long lived connections already. Also, wouldn't really work with generic TCP, see comments.gmane.org/gmane.comp.web.haproxy/1402
Jun
4
comment When using TCP load balancing with HAProxy, does all outbound traffic flow through the LB?
@Continuation: There are a good amount of real time features including Inbox notifications, votes, edits, new comments / answers / questions. Not sure if they are only enabled for users with a certain rep limit off hand, if you don't see them you could inquire on meta.stackoverflow.com
Jun
4
comment SCCM cannot connect to SQL
Install it from the Service manager, Server Manager :: Add Features :: Telnet Client
Jun
4
comment SCCM cannot connect to SQL
1) "Have not set up a firewall". Generally, Windows has one on my default. "Run from console" Yes, run it from the console. If it works, the console will just sort of go blank. If it doesn't you will see Connecting to my-db-server... and eventually Could not open connection the host, on port 1433: Connect failed
Jun
3
comment Haproxy and CNAME
The host field in the http header. What generates the error? If the provider doesn't give you a dedicated ip, then you probably can't access your sites via ip because they are already directing based on the name. In other words, maybe they return the error before it even gets to your haproxy instance
Jun
3
comment Haproxy and CNAME
For that you would use reqadd to add, or reqrep to replace - code.google.com/p/haproxy-docs/wiki/HTTPHeaderManipulation
May
31
comment SET RECOVERY Model Using sp_msforeachdb
@RyanB: Oh I see now, sorry for the confusion. Going to leave this in case it helps someone else getting the same error for different reasons.
May
31
comment F5 Big-IP iRule - HTTP Redirect
Hi Lori, thank you for the answer. We don't allow signatures/taglines (serverfault.com/faq#signatures) so I edited that out. Hope you don't take offense are we are happy to have representatives from vendors providing technical answers.
May
30
comment When using TCP load balancing with HAProxy, does all outbound traffic flow through the LB?
@MarcGravell: Virtually all web sockets. Keep in mind that this is 2x though as I said in my introduction, so the web sockets servers would see a total of ~70k
May
24
comment which linux distro favours remote administration and remote incremental backup over vpn?
@freefallr: Sounds like you have the right idea with "time". Single admin in a small shop it often will come down to making things easy because of time constraints more than "skill" limitations. I love Linux and always will, but it is hard to beat the MS stack for simple small office features. Lots of things like VPN, fileshares, and Directory Services are very simple to set up.
May
24
comment which linux distro favours remote administration and remote incremental backup over vpn?
@freefallr: Understood, IMO often that approach might be short sighted (in the long run it might cost more), but that is often not the call of the IT person :-P Cloud services (in particular for email) might be your best bet.
May
15
comment Cisco ASA Latency
@Ladadadada: Any chance you could show us your methodology for measuring this? I think that will be more useful in the long run to the world at whole than just the one sample..
May
2
comment Why this recursion in tracert hops?
Also, going of the specific latency from hops 2-4, I would guess the upstream provider to your ISP isn't that great. That might just be the nature of the Internet in India, or you might be able to get a better ISP. Best bet is to forward this to your ISP and see if you can get someone who knows what they are talking about to explain that latency.
Apr
25
comment Are ASNs tied to one location/router/physical point?
On a more practical note, if you don't trust your ISP to be honest about their upstream saturation find a different one. I don't know of a way to independently get this information (but there might be a way)