LoadBalancer managing Spectrum OneClick Servers 10.2.1
The LoadBalancer is configured to send health requests/checks to the Spectrum server to see if the tomcat is still up and running. This check looks like this:
GET /spectrum/console/install-java.jsp HTTP/1.1\r\nHost: localhost\r\nConnection: Close\r\n\r\n
Since the check did not include the user-agent it has created an exception in tomcat log file.
Removing or altering this check is avoiding the exception message. For example this health check is not creating the log entries but is still checking if the OneClick Server is alive:
GET /spectrum/admin/index.jsp HTTP/1.1\r\nHost: localhost\r\nConnection: Close\r\n\r\n