Symptoms
We get the following errors in the Workspace after we installed K2 Server and Workspace on one of the servers in the farm. I am also sending the log file amd screenshots. Request you to help us in this regard at the earliest. This is prod environment.
In Reports page, we get "Send Failed with error: An existing connection was forcibly closed by the remote host" Under Management, it lists 2 Management services. When we try to access the first one, it gives "Error receiving buffer: An existing connection was forcibly closed by the remote host". I am able to access the second one though.
Diagnoses
Customer was supplied the fllowing documentation regarding
NLB configuration for the F5 load balancers which must be done firstly according to : http://help.k2.com/kb001679
Kindly note that K2 supports Microsoft NLB, please see: http://help.k2.com/en/KB000433.aspx But any hardware Load Balancer should work with the correct settings in place. Please refer to the documentations below:
http://help.k2.com/onlinehelp/k2blackpearl/icg/4.6.8/webframe.html_before_settingupnlb.html
http://help.k2.com/onlinehelp/k2blackpearl/icg/4.6.8/webframe.html_deploymentconsidert2.html
Resolution
Custmer resolved the issue after supplying the following:
Kindly let the IT read carefully and verify these settings.
NLB configuration for the F5 load balancers must be done firstly according to : http://help.k2.com/kb001679
Kindly note that K2 supports Microsoft NLB, please see: http://help.k2.com/en/KB000433.aspx But any hardware Load Balancer should work with the correct settings in place. Please refer to the documentations below:
http://help.k2.com/onlinehelp/k2blackpearl/icg/4.6.8/webframe.html_before_settingupnlb.html
http://help.k2.com/onlinehelp/k2blackpearl/icg/4.6.8/webframe.html_deploymentconsidert2.html
Below are the recommended affinity setting for Windows NLB (you will need to determine how these settings translate in the hardware NLB implementation you have/or plan to put in place):
Unicast operation mode K2 Host Server (stateless): Affinity set to None TCP ports 5252 and 5555 (default)
K2 Workspace Server: Affinity set to Single : See KB for more information: http://help.k2.com/en/kb000264.aspx
Also, please see the following K2 Article regarding TCP port numbers and firewall setting in K2: http://help.k2.com/en/kb001318.aspx
