Hello Emilio
Thank you for your fast response.
Unfortunately, with the nmap command the application logs the following error:
14:57:28 Cannot execute the operation 'WSASend[4]': Error code: 0: The
operation completed successfully.
Something is still different to the “tcp_half_open” check of F5 Networks.
Best regards,
Matthias
Von: Emilio Campos [mailto:emilio.campos.mar...@gmail.com]
Gesendet: Donnerstag, 14. April 2016 12:21
An: zenloadbalancer-support@lists.sourceforge.net
Betreff: Re: [Zenloadbalancer-support] tcp_half_open check with FarmGuardian
have you tried with nmap? something like this:
nmap -sS <IP_BACKEND> -p <PORT_BACKEND> | grep open
echo $? = 0 in my case.
In case you want to integrate with Farmguardian, you have to create your own
script in /usr/local/zenloadbalancer/app/libexec/, here some example:
http://www.zenloadbalancer.com/knowledge-base/howtos/farmguardian-quick-start-configuration/
Regards!
2016-04-14 11:28 GMT+02:00 Ebert, Matthias
<matthias.eb...@siemens.com<mailto:matthias.eb...@siemens.com>>:
Hello community
We are trying to use FarmGuardian to check for an open port on our backend
servers.
We are using this command:
check_tcp -H HOST -p 5085
Unfortunately, this check is flooding the log file of the application that is
listening on that port with the following error:
16:32:04 Cannot execute the operation 'WSARecv1()' on session 72228:
WSAECONNABORTED: An established connection was aborted by the software in your
host machine.
I already did some tests to do a so called “tcp_half_open” check, which is
available on the F5 Networks load balancer, but I cannot get it work with the
ZEN load balancer.
Does somebody have a hint, how to write a plugin for FarmGuardian to do a
“tcp_half_open” check?
Thank you very much in advance.
Best regards,
Matthias
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