Re: SSH hangs while restarting services
On Tue, Nov 04, 2014 at 08:48:03AM +0800, Denny Lin wrote: Recently I've been trying to restart services remotely using SSH using a command instead of entering the shell: ssh host sudo service postgresql restart PostgreSQL is able to restart successfully, but SSH just hangs there instead of exiting. I've noticed that this seems to affect any command which spawns a child process which doesn't exit. Is there any way to get SSH terminate? Thanks. Sorry, I accidentally deleted the replies in my mailbox, so I'll respond here. I've tried running sudo /bin/sh and exiting immediately. There isn't any hang, so it shouldn't be a sudo bug. I see the same hang over SSH if I fork a process without sudo. Adding -f to ssh like Kevin suggested solved the problem. Thanks! -- Denny Lin ___ freebsd-ports@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-ports To unsubscribe, send any mail to freebsd-ports-unsubscr...@freebsd.org
Re: SSH hangs while restarting services
Hi, On Tue, Nov 04, 2014 at 08:48:03AM +0800, Denny Lin wrote: Recently I've been trying to restart services remotely using SSH using a command instead of entering the shell: ssh host sudo service postgresql restart PostgreSQL is able to restart successfully, but SSH just hangs there instead of exiting. I've noticed that this seems to affect any command which spawns a child process which doesn't exit. Can you check if it's really ssh which hangs or sudo ? I have just stumbled upon a sudo bug myself: the child process launched by sudo-1.8.11 hangs in the manner you just described. The same command launched by sudo-1.8.10 works fine. Running sudo /bin/sh and quitting the new shell is enough to verify if everything's fine or not. -- Francois Tigeot ___ freebsd-ports@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-ports To unsubscribe, send any mail to freebsd-ports-unsubscr...@freebsd.org
SSH hangs while restarting services
Hi, Recently I've been trying to restart services remotely using SSH using a command instead of entering the shell: ssh host sudo service postgresql restart PostgreSQL is able to restart successfully, but SSH just hangs there instead of exiting. I've noticed that this seems to affect any command which spawns a child process which doesn't exit. Is there any way to get SSH terminate? Thanks. -- Denny Lin ___ freebsd-ports@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-ports To unsubscribe, send any mail to freebsd-ports-unsubscr...@freebsd.org
Re: SSH hangs while restarting services
On Mon, Nov 3, 2014 at 4:48 PM, Denny Lin dennyli...@hs.ntnu.edu.tw wrote: Hi, Recently I've been trying to restart services remotely using SSH using a command instead of entering the shell: ssh host sudo service postgresql restart PostgreSQL is able to restart successfully, but SSH just hangs there instead of exiting. I've noticed that this seems to affect any command which spawns a child process which doesn't exit. Is there any way to get SSH terminate? Thanks. -- Denny Lin Try ssh -f host sudo service postgresql restart. If a socket is open, ssh will not exist and something in the startup is leaving something link STDOUT open. Use of '-f'' should work around this issue. From ssh(1): -f Requests ssh to go to background just before command execution. This is useful if ssh is going to ask for passwords or passphrases, but the user wants it in the background. This implies -n. The recommended way to start X11 programs at a remote site is with something like ssh -f host xterm. If the ExitOnForwardFailure configuration option is set to “yes”, then a client started with -f will wait for all remote port for‐ wards to be successfully established before placing itself in the background. -- R. Kevin Oberman, Network Engineer, Retired E-mail: rkober...@gmail.com ___ freebsd-ports@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-ports To unsubscribe, send any mail to freebsd-ports-unsubscr...@freebsd.org
