XXXX@YYYY:~$ for i in `seq 10`; do ssh -o ControlMaster=auto -o ControlPath=~/.ssh/ssh_control_%h_%p_%r www.xxx.yyy.zzz date & done [11] 7155 [12] 7156 [13] 7157 [14] 7158 [15] 7159 [16] 7160 [17] 7161 [18] 7162 [19] 7163 [20] 7165 XXXX@YYYY:~$ XXXX@www.xxx.yyy.zzz's password: XXXX@www.xxx.yyy.zzz's password: XXXX@www.xxx.yyy.zzz's password: XXXX@www.xxx.yyy.zzz's password: XXXX@www.xxx.yyy.zzz's password: XXXX@www.xxx.yyy.zzz's password: XXXX@www.xxx.yyy.zzz's password: XXXX@www.xxx.yyy.zzz's password: XXXX@www.xxx.yyy.zzz's password: XXXX@www.xxx.yyy.zzz's password: On Sat, 2007-10-27 at 03:28 -0400, Chris AtLee wrote: > I get this w/ openssh-client 1:4.6p1-5 from sid. I have > ControlMaster=auto and ControlPath set in my ~/.ssh/config file. What > happens when you run this: > > for i in `seq 10`; do ssh -o ControlMaster=auto -o > ControlPath=~/.ssh/ssh_control_%h_%p_%r xxx.yy.zzz date &; done > > On 10/27/07, Nicolas Valcarcel <nvalcarcel@gmail.com> wrote: > > On sid i have get different results: > > > > XXX@YYYY:~$ for i in `seq 10`; do ssh www.xxx.yyy.xxx date& done > > [11] 6147 > > [12] 6148 > > [13] 6149 > > [14] 6150 > > ssh_exchange_identification: Connection closed by remote host > > ssh_exchange_identification: Connection closed by remote host > > ssh_exchange_identification: Connection closed by remote host > > [15] 6151 > > [16] 6152 > > [17] 6153 > > [18] 6154 > > ssh_exchange_identification: Connection closed by remote host > > ssh_exchange_identification: Connection closed by remote host > > ssh_exchange_identification: Connection closed by remote host > > [19] 6155 > > [20] 6156 > > [11] Exit 255 ssh www.xxx.yyy.xxx date > > [12] Exit 255 ssh www.xxx.yyy.xxx date > > [13] Exit 255 ssh www.xxx.yyy.xxx date > > [14] Exit 255 ssh www.xxx.yyy.xxx date > > [15] Exit 255 ssh www.xxx.yyy.xxx date > > [16] Exit 255 ssh www.xxx.yyy.xxx date > > nxvl@LePew:~$ ssh_exchange_identification: Connection closed by remote > > host > > ssh_exchange_identification: Connection closed by remote host > > ssh_exchange_identification: Connection closed by remote host > > ssh_exchange_identification: Connection closed by remote host > > > > > > Which version of debian are you running? > > > > On Fri, 2007-10-26 at 09:27 -0400, Chris AtLee wrote: > > > I'd like to note that this problem also manifests as a race condition. > > > I have some scripts that execute multiple 'scp' commands in parallel, > > > and I quite often see some of them fail with "ControlSocket ... > > > already exists" > > > > > > It seems like what happens is scp shuts down the connection before > > > deleting the control socket file, thus preventing other scp commands > > > from running. Or maybe the socket file is created before the > > > connection is active? > > > > > > I can reproduce pretty easily with this: > > > > > > #!/bin/bash > > > for i in `seq 10`; do > > > ssh host date& > > > done > > > > > > > > > > > > > > -- > > aka nxvl > > key fingerprint: E140 4CC7 5E3C B6B4 DCA7 F6FD D22E 2FB4 A9BA 6877 > > gpg --keyserver keyserver.ubuntu.com --recv-keys A9BA6877 > > Yo uso Software Libre y tu? > > > > -- aka nxvl key fingerprint: E140 4CC7 5E3C B6B4 DCA7 F6FD D22E 2FB4 A9BA 6877 gpg --keyserver keyserver.ubuntu.com --recv-keys A9BA6877 Yo uso Software Libre y tu?
Attachment:
signature.asc
Description: This is a digitally signed message part