Re: Load Balancing Issue - can someone help?

Glen Kendell <[email protected]>
Newsgroups gmane.linux.highavailability.ultramonkey
Message-ID <C0FF404E.15BA7%[email protected]>
Ian,

May I suggest starting with HTTP just to get it working?  Start with testing
a connection to each real server from the director itself.  That will at
least tell you if you have an issue between your real servers and the
director or not.  For session-oriented protocols like telnet and ftp, you
may want to add persistent=600 (or whatever value) to your ldirectord.cf.

- Glen


On 8/9/06 6:35 AM, "Ian Walker" <[email protected]> wrote:

> I've tried that too, just realised the port 22 was when I was testing ssh!!!
> Doh.  Sorry about that.  With ftp I don't get anything at all, no results.
> The only time I've managed to get some sort of results on the ldirectord is
> when using telnet.  But even that isn't 100% successful, as you can just see
> the incoming packets, and inactive session, nothing goes active, and no
> packets are sent back outbound.
> 
> 
> Ian
> 
> On 09/08/06, Glen Kendell <[email protected]> wrote:
>> Ian,
>> 
>> Try port 21. :-)
>> 
>> - Glen
>> 
>> 
>> 
>> On 8/9/06 5:32 AM, "Ian Walker" <[email protected]> wrote:
>> 
>> I checked my config, and I'm not sure why it was reporting zero the first
>> time around.  I now have a weight of 1 for both entries, shown below:
>> 
>> 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 <http://172.20.12.231:22>  <http://172.20.12.231:22>
>> rr
>>   -> 192.168.0.3:22 <http://192.168.0.3:22>  <http://192.168.0.3:22>
>> Masq    1      0          0
>>   -> 192.168.0.2:22 <http://192.168.0.2:22>  <http://192.168.0.2:22>
>> Masq    1      0          0
>> 
>> however, I still get the same end result of no connection.  I'm new to this,
>> but I based my config on the sample ldirectord.cf  <http://ldirectord.cf>
>> <http://ldirectord.cf>  file to get as far as I have now.
>> 
>> Regards
>> 
>> 
>> Ian
>> 
>> 
>> 
>> On 09/08/06, Andersson Mattias < [email protected]
>> <mailto:[email protected]> > wrote:
>> 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 <http://172.20.12.231:22>  <http://172.20.12.231:22>
>> rr
>>   -> 192.168.0.3:22 <http://192.168.0.3:22>  <http://192.168.0.3:22>
>> Masq    0      0          0
>>   -> 192.168.0.2:22 <http://192.168.0.2:22>  <http://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]
>> <mailto:[email protected]>
>> <mailto:[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 <http://172.20.12.231:22>
>> <http://172.20.12.231:22>
>>  real = 192.168.0.2:22 <http://192.168.0.2:22>  <http://192.168.0.2:22>  masq
>>  real = 192.168.0.3:22 <http://192.168.0.3:22>  <http://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 <http://172.20.12.231:22>  <http://172.20.12.231:22>  rr
>>  -> 192.168.0.3:22 <http://192.168.0.3:22>  <http://192.168.0.3:22>  Masq 0 0
>> 0
>>  -> 192.168.0.2:22 <http://192.168.0.2:22>  <http://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 <http://172.20.12.231:23>
>> <http://172.20.12.231:23>
>>  real = 192.168.0.2:23 <http://192.168.0.2:23>  <http://192.168.0.2:23>  masq
>>  real = 192.168.0.3:23 <http://192.168.0.3:23>  <http://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 <http://172.20.12.17:41271>
>> <http://172.20.12.17:41271>  172.20.12.231:23 <http://172.20.12.231:23>
>> <http://172.20.12.231:23>  192.168.0.2:23 <http://192.168.0.2:23>
>> <http://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 <http://172.20.12.231:23>  <http://172.20.12.231:23>  1
>> 3 0 180 0
>>  -> 192.168.0.2:23 <http://192.168.0.2:23>  <http://192.168.0.2:23>  1 3 0
>> 180 0
>>  -> 192.168.0.3:23 <http://192.168.0.3:23>  <http://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 <http://172.20.12.231>  <http://172.20.12.231> . This ip
>> is assigned to eth0. The other card, eth1 has been configured with
>> 192.168.0.1 <http://192.168.0.1>  <http://192.168.0.1>  <http://192.168.0.1>
>> .
>> 
>> The two servers running ftp have been configured with 192.168.0.2
>> <http://192.168.0.2>  <http://192.168.0.2>  and 192.168.0.3
>> <http://192.168.0.3>  <http://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
>> 
>> 
>> --
>> Ultra Monkey - http://www.ultramonkey.org/  <http://www.ultramonkey.org/>
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>> 
>> 
>> 


-- 
Glen Kendell
Martian Fireworks Security
206.965.8583 direct
206.399.3510 cell
[email protected]
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