RE: Load Balancing Issue - can someone help?

Hi Ian

Having a look at:
IP Virtual Server version 1.0.8 (size=65536)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  172.20.12.231:22 rr
  -> 192.168.0.3:22               Masq    0      0          0
  -> 192.168.0.2:22               Masq    0      0          0

The weight 0 indicates that your connection verification is not working and that the real servers therefore are disabled.

Have a look at your ldirectord configuration and fix this.


/Mattias

________________________________________
From: [email protected] [mailto:[email protected]] On Behalf Of Ian Walker
Sent: Wednesday, August 09, 2006 12:42 PM
To: [email protected]
Subject: Load Balancing Issue - can someone help?

Have been trying to get my config to work, using ftp but it doesn't seem to work on RHEL3U7.  Here's my config:

virtual = 172.20.12.231:22
        real = 192.168.0.2:22 masq
        real = 192.168.0.3:22 masq
        service = ftp
        request = "/etc/welcome.msg"
        receive = "Welcome"
        login = "anonymous" 
        passwd = "[email protected]"
        scheduler = rr
        protocol = tcp
        checktype = negotiate

I've validated that it's running OK using "ipvsadm -ln" and it shows the following results: 

IP Virtual Server version 1.0.8 (size=65536)
Prot LocalAddress:Port Scheduler Flags
  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn
TCP  172.20.12.231:22 rr
  -> 192.168.0.3:22               Masq    0      0          0
  -> 192.168.0.2:22               Masq    0      0          0

and everytime I try to connect with FTP it fails with connection refused.  I did change the config so that it was configured for telnet just to test, so my config was:


virtual = 172.20.12.231:23 
        real = 192.168.0.2:23 masq
        real = 192.168.0.3:23 masq
        service = none
        request = "/etc/welcome.msg"
        receive = "Welcome"
        scheduler = rr
        protocol = tcp
        checktype = negotiate

and this time when I ran the "ipvsadm -ln --connection" command, I got these results:

IPVS connection entries
pro expire state       source             virtual            destination
TCP 00:59  SYN_RECV    172.20.12.17:41271 172.20.12.231:23   192.168.0.2:23

so is kind of looking better.  I then checked the stats to find: 

IP Virtual Server version 1.0.8 (size=65536)
Prot LocalAddress:Port               Conns   InPkts  OutPkts  InBytes OutBytes
  -> RemoteAddress:Port
TCP  172.20.12.231:23                     1        3        0      180        0
  -> 192.168.0.2:23                      1        3        0      180        0
  -> 192.168.0.3:23                      0        0        0        0        0

so I'm not entirely sure why it's not working as the connection just sits there trying to connect with telnet, and nothing else happens.  I've installed the relevant packages for the ldirector as well as the arptables_jf package for RHEL3. 

The ldirector has been configured with two network cards.  The main network being 172.20.12.231.  This ip is assigned to eth0.  The other card, eth1 has been configured with 192.168.0.1.

The two servers running ftp have been configured with 192.168.0.2 and 192.168.0.3.  Of course, with ftp there was nothing, no connection or no stats, that's why I configured with telnet, just to see if anything would show. 

Hope I've not sent this to the wrong place, am quite interested in getting this working.

Regards


Ian


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