Hi Joseph: This looks like you are hitting a 'normal' sshd connection limit specified in sshd_config (MaxSessions), or if you're using xinetd a 'per_source' that's too low (in /etc/xinetd.d/sshd). I'd guess the former, although we do the latter on our head node to try to keep our researchers from opening unlimited numbers of sessions on hosts here and yon. :)
Have you looked at your connection log (/var/log/secure or messages)? The default MaxSessions is 10 (when MaxSessions is commented out in sshd_config), at least in RedHat 6 that we are currently using. Good luck and let us know what you discover! -Hugh -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Joseph Farran Sent: Thursday, February 14, 2013 7:04 PM To: [email protected] Subject: Re: [gridengine users] Fwd: Unable to ssh into node Using ssh -vvv when the node refuses a connection from the user gives the clue of it being "[email protected]" debug1: Requesting [email protected] debug1: Entering interactive session. debug3: Wrote 192 bytes for a total of 2581 debug1: channel 0: free: client-session, nchannels 1 debug3: channel 0: status: The following connections are open: #0 client-session (t3 r-1 i0/0 o0/0 fd 4/5 cfd -1) debug3: channel 0: close_fds r 4 w 5 e 6 c -1 Connection to compute-1-1 closed by remote host. It sure looks to me like Grid Engine is modifying this ssh feature to not allow any more new sessions from the user when the node is overloaded. Joseph _______________________________________________ users mailing list [email protected] https://gridengine.org/mailman/listinfo/users _______________________________________________ users mailing list [email protected] https://gridengine.org/mailman/listinfo/users
