Error Message :
User Interface (UI) login fails, it logs in then logs off immediately.
When attempting to sign on using the UI, it accepts the ID / Password, but nothing happens after that.
In the logs, it shows the ID sign on / then logged off immediately afterwards, as seen in the sample below:
Root Cause: Message via the DB IP is faster than a message via the IP so the server gets the login and sends a flush to all other WPs causing the issue.
OS Version: N/A
Automic allows the use of "Nagle's algorithm", which is a method of improving the efficiency of TCP/IP networks by reducing the number of packets that need to be sent over a network.
This feature is currently activated for the AutomationEngine (tcp_nodelay=0 -> default value).
So the solution for this issue is disable the "Nagle's algorithm" by setting "tcp_nodelay=1" in the ucsrv.ini file.
Fix Status: No Fix