Is this FreeBSD 9.x or HEAD?
On Fri, Mar 8, 2013 at 2:19 PM, Kajetan Staszkiewicz <[email protected]>wrote: > Hello there! > > In my enviroment, where I use FreeBSD machines as loadbalancers, after a > server > is detected as dead, loadbalancer removes the the broken server from a > table > used in route-to pf rule and then removes Source entries pointing clients > to > that server, so clients previously assigned to the broken server are re- > loadbalanced to alive servers. > > Each loadbalancer has around 50k Source and 500k State entries. Under those > conditions removing a Source from anywhere to a dead server with `pfctl -K > 0.0.0.0/0 -K internal.IP.of.server` freezes the machine for a few seconds > (or > even up to a minute in other datacenter segment, where different services > are > served, causing thousands instead of just a few hundred States to be > matched). > Under a DDoS attack, when removing Sources to a server under attack, kernel > freezes permanently (I gave up after 10 minutes waiting and restarted the > machine). > > A patch fixing the issue can be found here: > > http://vegeta.tuxpowered.net/download/link-states-to-src_node.patch > > -- > | pozdrawiam / greetings | powered by Debian, CentOS and FreeBSD | > | Kajetan Staszkiewicz | jabber,email: vegeta()tuxpowered net | > | Vegeta | www: http://vegeta.tuxpowered.net | > `------------------------^---------------------------------------' > _______________________________________________ > [email protected] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "[email protected]" > -- Ermal _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-pf To unsubscribe, send any mail to "[email protected]"
