On Fri, Jul 18, 2008 at 03:00:03PM +0800, Simon Oxwell wrote: > Hi, > > I'm trying to set up a fallback directive in ldirectord for a service > that I'm using LVS-NAT to load balance to. > > My setup closely follows the examples[1] that I've seen about the internet: > > ldirectord.cf: > > # Global Directives > checktimeout=3 > checkinterval=5 > fallback=127.0.0.1:80 > autoreload=yes > logfile="/var/log/ldirectord.log" > quiescent=yes > > virtual=134.115.4.218:80 > real=10.50.48.11:7778 masq > real=10.50.48.12:7778 masq > fallback=127.0.0.1:80 > service=http > request="/index.html" > receive="Welcome" > virtualhost=my.murdoch.edu.au > scheduler=lc > persistent=600 > #netmask=255.255.255.255 > protocol=tcp > > when the realservers are down, ipvsadm gives me this: > > IP Virtual Server version 1.2.1 (size=4096) > Prot LocalAddress:Port Scheduler Flags > -> RemoteAddress:Port Forward Weight ActiveConn InActConn > TCP my.murdoch.edu.au:www lc persistent 600 > -> localhost.localdomain:www Local 1 0 0 > > and when I try to connect, ipvsadm -Lcn give me: > > IPVS connection entries > pro expire state source virtual destination > TCP 00:48 SYN_RECV 134.115.82.191:4437 134.115.4.218:80 127.0.0.1:80 > TCP 00:50 SYN_RECV 134.115.82.191:4457 134.115.4.218:80 127.0.0.1:80 > TCP 00:49 SYN_RECV 134.115.82.191:4447 134.115.4.218:80 127.0.0.1:80 > TCP 00:49 SYN_RECV 134.115.82.191:4441 134.115.4.218:80 127.0.0.1:80 > > And I have an apache instance listening on 127.0.0.0:80. > > Trouble is that the connection doesn't actually appear work - I get a > connection error. > > Digging a little deeper, it seems that all I get is the client > workstation sends a SYN to port 80 on the VIP, and gets returned a RST/ACK. > > I've seen a response in the mail list archives from a similar problem > that suggests that I have my apache server listen on *:80 instead, but > surely can't be right, because that would be an actual service listening > on the port, rather than a redirection by ipvs? > > (the ldirectord man page tells me it could a redirection to anywhere: > fallback = ip_address|hostname[:portnumber|sercvicename] > [gate|masq|ipip] > > the server onto which a webservice is redirected if all > real servers are down. Typically this would be 127.0.0.1 > with an emergency page. > > This directive may also appear within a virtual server, in > which case it will overide the global fallback server, if > set.) > > > So, what is it that I've got misconfigured? Or is it a case of not > understanding what it is that the fallback directive actually does in > this case?
Can you try setting apache to listen on 134.115.4.218:80? The connections from end-users should have that as their source IP address and port at the time that they are received by apache. -- Horms _______________________________________________ LinuxVirtualServer.org mailing list - [email protected] Send requests to [EMAIL PROTECTED] or go to http://lists.graemef.net/mailman/listinfo/lvs-users
