Using rsync with cron on different port.

dbsput · 11-14-2010, 04:10 AM

Hi guys,

I'm trying to set-up a cron job that uses rsync to transfer back files from a remote server. ssh on the remote server is running on port 12345 but this seems to be a problem.

My script looks like this:

Code:

#!/bin/sh

RSYNC=/usr/bin/rsync
SSH=/usr/bin/ssh
KEY=/home/username/.ssh/id_rsa.pub
RUSER=ruser
RHOST=hostip
RPATH=/var/usr_backups
RPORT=12345
LPATH=/var/backup/dhops

 $RSYNC --rsh='ssh -p$RPORT' -az -e "$SSH -i $KEY" $RUSER@$RHOST:$RPATH $LPATH

This script runs an error suggesting that --rsh is incorrect.

How should I be specifying the port number?

cepheus11 · 11-14-2010, 05:08 AM

Hi,

environment variables in single quotes do not get resolved. I think this is the problem with the RPORT parameter. Use double quotes:

Code:

$RSYNC --rsh="ssh -p$RPORT"...

dbsput · 11-14-2010, 05:34 AM

Thanks for the reply.

You were right and I tried your suggestion but I'm getting an error: --rsh=ssh -p32200: not found. It seems that the quotes are being stripped from the command.

dbsput · 11-14-2010, 05:43 AM

Isn't there a way you can specify hostA uses port X in a file somewhere? I remember seeing that a long time ago but I can't find it now. That would save me from needing to add it into the command.

michaelk · 11-14-2010, 06:06 AM

Yes, either in the users .ssh/config or system wide /etc/ssh/ssh_config files.

cepheus11 · 11-14-2010, 06:14 AM

You could escape the quotes with \:

Code:

$RSYNC --rsh=\"ssh -p$RPORT\"

The quotes are not interpreted by the shell. Could even be single quotes.

szboardstretcher · 11-15-2010, 12:54 PM

Quote:

Originally Posted by dbsput

Hi guys,

I'm trying to set-up a cron job that uses rsync to transfer back files from a remote server. ssh on the remote server is running on port 12345 but this seems to be a problem.

My script looks like this:

Code:

#!/bin/sh

RSYNC=/usr/bin/rsync
SSH=/usr/bin/ssh
KEY=/home/username/.ssh/id_rsa.pub
RUSER=ruser
RHOST=hostip
RPATH=/var/usr_backups
RPORT=12345
LPATH=/var/backup/dhops

 $RSYNC --rsh='ssh -p$RPORT' -az -e "$SSH -i $KEY" $RUSER@$RHOST:$RPATH $LPATH

This script runs an error suggesting that --rsh is incorrect.

How should I be specifying the port number?

rsync --rsh=ssh -az -e "ssh -i keyname -p12345" user@host:/path/