An update to my earlier reply The bypassing of the localnode behaviour (admittedly done by specifying a different port ) was done in a Patch By Simon Horman in the archive for this list.
http://archive.linuxvirtualserver.org/html/lvs-users/2005-06/msg00113.html This was a some time ago. Simon do you have a more up to date version of this patch, that I could apply to the kernel in say Centos 6? Many Thanks Dino > On Wed, 01 Dec 2011, Joseph Mack wrote: > > you have to turn local node on. It's not on by default. > This statement confuses me because if I refer to a ip on the local node and then run ipvsadm I always get something like: IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP vip-eml-302 rr -> 172.16.3.11:smtp Masq 1 0 0 -> 172.16.3.12:smtp Local 1 0 0 172.16.3.12 is a ip on the local node and always seems to get flagged as Local. So how do I avoid local node if the masq ip is on the local node? > > The documentation (old) says that lvs loading is quite low > > I have no idea what low loading is The references that I can find don't qualify low loading either, but I would assume that 10% resource consumption due to lvs and the rest remaining for applications would be a reasonable assumption. If I can get it to work I would be happy to share the performance data with the list (as long as I can get permission from my employer). Modern machines are much more power these days. It seems a bit wasteful to use a pair of hp dl360 g7s for a little lvs for two mail servers that do less than 100k mail messages a day. > > > When I was asking about alternatives I was wondering If other > > loadbalancing systems apart from lvs were available for Linux. > > don't know. Try google I already have, I don't normally use lists, only when I've exhausted other avenues. > > much better. However I don't understand what the 2ndary network is for > and why is has the same IPs as the primary network Ok the RIPs are all different (I sort of assumed that would be taken as given) We have 2 VIPs on the Primary network and another two on the secondary. VIP1 and VIP1s are taken as a pair as are VIP2 and VIP2s. client | Primary Network __________|_______ |RIP1,VIP1 |RIP2,VIP2 ======== ======== = = =lvsnat= = exim = = exim = ======== ======== |_______________| RIP3,VIP1s RIP4,VIP2s Secondary Network > Joe >The original reference to modifying lvs so that localnode is bypassed >is in >http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.one_box_lvs.html >by Horms 2 Sep 2006 >the patch >http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/files/local_nodes.patch >This is quite old, and probably won't apply anymore. Should I enquire about it >on lvs-devel? Many Thanks Dino Dr Dean Scothern Infrastructure E: dean.scoth...@eduserv.org.uk T: +44 (0)1225 474379 F: +44 (0)1225 474301 www.eduserv.org.uk Eduserv is a company limited by guarantee (registered in England & Wales, company number: 3763109) and a charity (charity number 1079456), whose registered office is at Royal Mead, Railway Place, Bath, BA1 1SR. _______________________________________________ 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
