Recently I have begun exploring the use of LVS to provide HA Load balancers for our internal middleware app layer. The real servers that I require load balancing for are on the same network as the director, the clients and in one extreme case, the same machine on different ports.
Currently I have a very simple implementation without the use of HA capabilities via keepalived. The only way I could make it work was outlined here: http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.LVS-NAT.html#one_networkwhich instructs me to disable icmp forwarding on my director and set my one and only route (default) on the real servers to the director. This doesn't feel right. I believe I read correctly that if I need I can have individual host routes to DBs, NFS, etc, is that correct? That is still kind of a pain, but eases it somewhat.. Is there another, less restrictive way to make LVS-NAT on one network work smoothly? Versions, etc: Director Kernel: 2.6.18-53.el5 #1 SMP ipvs: IP Virtual Server version 1.2.1 (size=4096) keepalived: 1.1.15 keepalive.cf: global_defs { notification_email { [EMAIL PROTECTED] } smtp_connect_timeout 30 ! Must be unique for every director lvs_id lvsdev01 } ! Setup virtual int vrrp_instance vip_one { state MASTER interface eth0 lvs_sync_daemon_inteface eth0 virtual_router_id 51 priority 150 advert_int 1 smtp_alert ! For other server connections !authentication { ! auth_type PASS ! auth_pass example !} ! VIP. virtual_ipaddress { 10.10.240.132 dev eth0 } } ! Setup the virtual server for ipvs. virtual_server 10.10.240.132 17000 { delay_loop 6 ! Weighted Least Connections lb_algo wlc ! Servers will talk through me and I'll do the NATing. lb_kind NAT ! Main protocol will be TCP protocol TCP persistence_timeout 0 ! Suspend on failure ha_suspend ! Real server real_server 10.10.240.48 17000 { weight 1 TCP_CHECK { connect_timeout 3 connect_port 17000 } } real_server 10.10.240.48 17001 { weight 1 TCP_CHECK { connect_timeout 3 connect_port 17001 } } } -- Benjamin Smith http://www.just-another.net _______________________________________________ LinuxVirtualServer.org mailing list - [email protected] Send requests to [EMAIL PROTECTED] or go to http://lists.graemef.net/mailman/listinfo/lvs-users
