We've recently been seeing errors when trying to wake up agents. A few agents respond, however the majority will not. The server.log file shows entries like this:
|20141230074313 I||#05448 NAIMSERV||Wake up agent on DNS name xxxx.xxx.xxx.xxx...|
|20141230074313 E||#05448 MCUPLOAD||Failed to send http request. Error=12029 (12029)|
|20141230074313 E||#05448 NAIMSERV||server.cpp(513): Failed to send request, err=0x80004005, HTTP status code=0|
|20141230074313 E||#05448 NAIMSERV||server.cpp(892): Error sending data channel message to application server|
|20141230074313 E||#05448 NAIMSERV||AgentServerCommHandler.cpp(659): Failed to precess agent request|
The DataChannel.xml and dcRedirect.xml files point to the same version (220.127.116.119). I can telnet to the wake-up port on the agents from the ePO server with no problem and the agents check in. DNS resolution works and HotFix510LL is installed. The tomcat7 process runs constantly at around 40-50% CPU and the system is sluggish with an 8-proc server and only around 7000 clients.