SSH quirk...
One thing I've noticed since day one and never really bothered with it, although now I wonder If I ssh to any of my servers, execute an init script restart (or stop, start), then exit, the remote ssh process never quits. I have to kill the actual process from where I ssh-ed from (or presumably the remote process would produce the same effect): [ server-1 ] -- ssh into -- [ server-2 ] In this scenario, say I execute any restart command, rndc, sendmail, nfs, anything, then type exit, it just hangs. server-2 never issues a connection close or anything. I have a log in from a second terminal to server-1 and kill the ssh process that goes to server-2 (or log onto server-2 from a different terminal and kill the process.) It doesn't matter what server I'm ssh FROM nor TO (I have about 10 of them,) it happens consistently on all of them. All machines are running RH7.3, with the following openssh packages installed: # rpm -qa | grep openssh openssh-3.1p1-6 openssh-clients-3.1p1-6 openssh-server-3.1p1-6 Has anyone noticed this? -- H| I haven't lost my mind; it's backed up on tape somewhere. + Ashley M. Kirchner mailto:[EMAIL PROTECTED] . 303.442.6410 x130 IT Director / SysAdmin / WebSmith . 800.441.3873 x130 Photo Craft Laboratories, Inc.. 3550 Arapahoe Ave. #6 http://www.pcraft.com . . .. Boulder, CO 80303, U.S.A. -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
Re: SSH quirk...
Ashley M. Kirchner said: In this scenario, say I execute any restart command, rndc, sendmail, nfs, anything, then type exit, it just hangs. yes I have noticed this from time to time. It's quite rare for me, but does happen. Haven't investigated much yet myself. quite odd, I usually run ssh with debugging (-v) and it too hangs, no debug output when logging out in such situations. pain in the ass sometimes, luckily it does not seem to affect any of my scripts that do automated ssh actions. at first I thought it may of been due to ssh having trouble closing any sockets that are forwarding for X. but after looking at my debug logs it shows that is probably not the case. most of my systems are debian, I can't remember if I've experienced the problem on a debian-debian system specifically but I think I have. nate -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
Re: [RH List] Re: SSH quirk...
nate wrote: yes I have noticed this from time to time. It's quite rare for me, but does happen. Haven't investigated much yet myself. quite odd, Okay, I'm not going crazy then. For me it only happens whenever I execute some restart (or stop/start) init script. Any other time I can log in and out just fine. It almost seems as if ssh expects whatever process you started to quit or something. Like it won't exit if there's something tied to it. Bizarre. -- H| I haven't lost my mind; it's backed up on tape somewhere. + Ashley M. Kirchner mailto:[EMAIL PROTECTED] . 303.442.6410 x130 IT Director / SysAdmin / WebSmith . 800.441.3873 x130 Photo Craft Laboratories, Inc.. 3550 Arapahoe Ave. #6 http://www.pcraft.com . . .. Boulder, CO 80303, U.S.A. -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
Re: SSH quirk...
On 14:28 23 Mar 2003, Ashley M. Kirchner [EMAIL PROTECTED] wrote: | nate wrote: | yes I have noticed this from time to time. It's quite rare for me, | but does happen. Haven't investigated much yet myself. quite odd, |Okay, I'm not going crazy then. For me it only happens whenever I | execute some restart (or stop/start) init script. Any other time I can | log in and out just fine. It almost seems as if ssh expects whatever | process you started to quit or something. Like it won't exit if there's | something tied to it. Bizarre. If you're dicking with an ethernet interface or firewall rules it can cut your connection off from the RST packet, so your ssh connection never sees the drop of the connection, just silence. -- Cameron Simpson, DoD#743[EMAIL PROTECTED]http://www.zip.com.au/~cs/ Uhlmann's Razor: When stupidity is a sufficient explanation, there is no need to have recourse to any other. - Michael M. Uhlmann, assistant attorney general for legislation in the Ford Administration -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
Re: SSH quirk...
Cameron Simpson wrote: If you're dicking with an ethernet interface or firewall rules it can cut your connection off from the RST packet, so your ssh connection never sees the drop of the connection, just silence. Well DUH. Obviously. smirk If you go back to my original message, you'll see that I said this happens with *any* script. -- H| I haven't lost my mind; it's backed up on tape somewhere. + Ashley M. Kirchner mailto:[EMAIL PROTECTED] . 303.442.6410 x130 IT Director / SysAdmin / WebSmith . 800.441.3873 x130 Photo Craft Laboratories, Inc.. 3550 Arapahoe Ave. #6 http://www.pcraft.com . . .. Boulder, CO 80303, U.S.A. -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
Re: SSH quirk...
Ashley M. Kirchner wrote: One thing I've noticed since day one and never really bothered with it, although now I wonder If I ssh to any of my servers, execute an init script restart (or stop, start), then exit, the remote ssh process never quits. I have to kill the actual process from where I ssh-ed from (or presumably the remote process would produce the same effect): [ server-1 ] -- ssh into -- [ server-2 ] In this scenario, say I execute any restart command, rndc, sendmail, nfs, anything, then type exit, it just hangs. server-2 never issues a connection close or anything. I have a log in from a second terminal to server-1 and kill the ssh process that goes to server-2 (or log onto server-2 from a different terminal and kill the process.) It doesn't matter what server I'm ssh FROM nor TO (I have about 10 of them,) it happens consistently on all of them. All machines are running RH7.3, with the following openssh packages installed: # rpm -qa | grep openssh openssh-3.1p1-6 openssh-clients-3.1p1-6 openssh-server-3.1p1-6 Has anyone noticed this? I've noticed this on machines where the services attaches itself to your /dev/pts/## session. Until the process is restarted or the SSH session is remotely killed, the session will remain open. VSFTPd (standalone from RawHide) and webmin are two services off the top of my head that will do this guarenteed. -Rick -- Rick Johnson, RHCE #807302311706007 - [EMAIL PROTECTED] Linux/Network Administrator - Medata, Inc. (from home) PGP Public Key: https://mail.medata.com/pgp/rjohnson.asc -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED] https://listman.redhat.com/mailman/listinfo/redhat-list
