Hi, I'm setting up various Xen guests, and want to use LVS to load-balance web traffic across them. I've tried two similar simple setups, and with both I see the same issue where LVS doesn't work properly when the director send the request to a real server on the same physical Xen host.
Scenario 1 : - 3 physical servers (Xen Hosts) with eth0 and eth1 - 3 web servers (Xen guests), one per host, listening only on eth1 - LVS NAT is configured using keepalived on the first Xen Host When I make a web request to the LVS director, it works fine when it sends it to the 2nd or 3rd web servers, but only gets about the first 12kb of the page when it sends it to the 1st web server (the only one on the same Xen Host as LVS). For pages smaller than 12kb, no problem. Scenario 2 : - 3 physical servers (Xen Hosts) with eth0 and eth1 - 3 web servers (Xen guests), one per host, listening only on eth1 - 1 LVS director (Xen guest), on the first Xen Host, eth0 and eth1 The exact same problem happens. Has anyone already seen this issue? Here are a few more details : - RHEL5 x86_64 with latest 2.6.18-8.1.8.el5xen kernel - keepalived package from Fedora recompiled for RHEL5 - net.ipv4.ip_forward = 1 on the LVS director - -A POSTROUTING -s 192.168.0.0/255.255.0.0 -o eth0 -j MASQUERADE If I remove the "local" web server from the keepalive/LVS configuration, it works fine, since it only sends to the real servers on the other physical servers, but that would mean not using the first physical server's CPU power and memory, which I don't want to be wasting. I'm pretty sure this has something to do with connection tracking and/or the bridges Xen configures, but I don't know what to try to fix the issue. Matthias -- Clean custom Red Hat Linux rpm packages : http://freshrpms.net/ Fedora release 7 (Moonshine) - Linux kernel 2.6.22.1-41.fc7 Load : 0.24 0.28 0.27 _______________________________________________ LinuxVirtualServer.org mailing list - [email protected] Send requests to [EMAIL PROTECTED] or go to http://lists.graemef.net/mailman/listinfo/lvs-users
