what kind of farm are you working with? TCP farms have a limit by default
257 that you can modify if you need:
*Max number of clients memorized in the farm.
Take a look to this field, maybe your farm is opening the max of tcp socket
allowed, increment the value to 1024 for example and let us know.
Regards*
2012/9/11 Steve LePage <[email protected]>
> Ok another interesting discovery…****
>
> ** **
>
> ** **
>
> The farm is up working and forwarding tcp socket connections from it’s VIP
> -> backend, all of a sudden it stops forwarding.****
>
> ** **
>
> - I use telnet to create a tcp socket from an external pc to the backend
> and it connects.****
>
> - I use that same external pc to telnet to VIP and it tries to connect and
> then it fails.****
>
> - From inside the Load Balancer I telnet to the backend and it connects.**
> **
>
> ** **
>
> This would indicate issue with network pertaining to VIP IP but……****
>
> ** **
>
> I connect to a different tcp farm (same setup on same VIP but different
> port going to same backend)****
>
> And it works…. Eventually this working farm does the same****
>
> ** **
>
> SO when the forwarding stops I stop the farm wait a second then start it…
> I still can’t connect right away but after a few minutes the connections
> start working again..****
>
> ** **
>
> Very strange.. It seems like I’m hitting some sort of forwarding
> connection limit or the LB is blacklisting me..****
>
> ** **
>
> ** **
>
> ** **
>
> ** **
>
> *From:* Emilio Campos [mailto:[email protected]]
> *Sent:* Tuesday, September 11, 2012 10:36 AM
> *To:* [email protected]
> *Subject:* Re: [Zenloadbalancer-support] TCP farm connection issues****
>
> ** **
>
> Steve it isn't a zlb version problem because the binary that do the load
> balancing is the same in both. It sounds like a network issue.
>
> p.s.: You don't see down the backends in the moment that you run the farm
> because the lb only checks backends in the moment that it has to send a
> connection to the backend.****
>
> 2012/9/11 Steve LePage <[email protected]>****
>
> In our live environment I have zen 1.0 stable performing simple TCP
> loadbalancing between as asp.net frontend and a c# backend service on
> port 7000. This works fine and I couldn’t be happier… I just setup a V2
> stable env for testing and every time I try it I see after a few
> connections that the Farm / backend in the LB stay green and I can telnet
> to the backend on port 7000 but if I use the Virtual LB IP it states
> connection refused….. What would make the LB see the farm as up and the
> backend as up but stop connections via tcp? I see no errors in the logs and
> I see no connection debug messages when I try to connect just simply
> connection refused…****
>
> ****
>
> Also is it possible to download older versions of the iso’s?****
>
>
>
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> _______________________________________________
> Zenloadbalancer-support mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/zenloadbalancer-support****
>
>
>
>
> --
> Load balancer distribution - Open Source Project
> http://www.zenloadbalancer.com
> Distribution list (subscribe):
> [email protected]****
>
>
> ------------------------------------------------------------------------------
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> Exclusive live event will cover all the ways today's security and
> threat landscape has changed and how IT managers can respond. Discussions
> will include endpoint security, mobile security and the latest in malware
> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
> _______________________________________________
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> [email protected]
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>
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http://www.zenloadbalancer.com
Distribution list (subscribe): [email protected]
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threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
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