if u are using direct return , how about the loopback addition to the real servers ?
On Tue, Aug 18, 2015 at 10:44 PM, Jamie Dahl <jam...@meatball.net> wrote: > > so yah, i've always seen the following settings applied to > /etc/sysctl.conf on linux hosts that are behind DR/DSR vips: > net.ipv4.conf.lo.arp_ignore=1 > net.ipv4.conf.lo.arp_announce=2 > net.ipv4.conf.all.arp_ignore=1 > net.ipv4.conf.all.arp_announce=2 > [jdahl@proxy-3-edge ~]$ > > however after reading yoru email again, I'm not thinking this is the issue. > > I assume you are allowing a permit in iptables to the VIP IP on the real > servers? > > > > > > > Hello, > > > > I just configured an environment of two LVS servers with three real > > servers, and it works fine ... in the same network. When we try to > > access the web server through the virtual IP from another network, > > suddenly it doesn't work, this noted in the fact that we can't access > > the VIP, but it still works in the same network. But, if I shutdown one > > of the servers, it works perfectly. > > > > My configuration is Direct Routing. My doubt is in the ARP > > configuration. I read on section 6.8 at > > http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.arp_problem.html > > that the following commands must be executed to properly configure > > arptables on every real server: > > > > # arptables -A IN -d $VIP -j DROP > > # arptables -A OUT -s $VIP -j mangle --mangle-ip-s $RIP > > > > > > But looking at RedHat documentation (I'm working with RHEL servers) > > mentions on section 3.2.1 at > > > https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/4/html/Virtual_Server_Administration/s1-lvs-direct-VSA.html#s2-lvs-direct-arptables-VSA > > that the configuration to use is: > > > > arptables -A IN -d <virtual_ip> -j DROP > > arptables -A OUT -d <virtual_ip> -j mangle --mangle-ip-s <real_ip> > > > > > > So ... Austintek uses the VIP as a source on the OUT chain, but RedHat > > uses it as a destiny. Can anyone tell me what is the right > > configuration? And could it be the cause of my problem, not being able > > to access my balancers with three real servers from outside the network? > > Funny thing is, both configurations seem to work the same way, which one > > is correct? > > > > Thanks in advance. > > > > Israel. > > > > > > _______________________________________________ > > Please read the documentation before posting - it's available at: > > http://www.linuxvirtualserver.org/ > > > > LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org > > Send requests to lvs-users-requ...@linuxvirtualserver.org > > or go to http://lists.graemef.net/mailman/listinfo/lvs-users > > > > > -- > > > > _______________________________________________ > Please read the documentation before posting - it's available at: > http://www.linuxvirtualserver.org/ > > LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org > Send requests to lvs-users-requ...@linuxvirtualserver.org > or go to http://lists.graemef.net/mailman/listinfo/lvs-users > _______________________________________________ Please read the documentation before posting - it's available at: http://www.linuxvirtualserver.org/ LinuxVirtualServer.org mailing list - lvs-users@LinuxVirtualServer.org Send requests to lvs-users-requ...@linuxvirtualserver.org or go to http://lists.graemef.net/mailman/listinfo/lvs-users
