[Last Call] Learn about multicloud storage options and how to improve your company's cloud strategy. Register Now

x
?
Solved

Multiple ssh hops to tar to MAC laptop.

Posted on 2009-03-30
7
Medium Priority
?
437 Views
Last Modified: 2012-05-06


Hi-
I need to ssh into server X and then ssh into server Y and tar up a dir (files and dirs), to my MAC laptop. I previously got this from OmarFarid:

ssh username@remoteserver "tar cf - /path/to/dir" | dd of=/path/to/local/dir/mybackup.tar.

I am thinking something like:

ssh username@remoteserver1 | ssh username@remoteserver2  "tar cf - /path/to/dir" | dd of=/path/to/local/dir/mybackup.tar

But not sure. Any help will be appreciated. If by some strange web of circumstances I am right, then the confirmation is still worth 500 pts. I am under the gun on this latest project, and I appreciated you folks help.

Thanks -
0
Comment
Question by:wotan1953
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
  • 2
7 Comments
 
LVL 40

Expert Comment

by:omarfarid
ID: 24020097
try

ssh user@serverA "ssh user@serverB tar -cf - /path/to/dir" | dd of=/path/to/local/dir/mybackup.tar
0
 

Author Comment

by:wotan1953
ID: 24020387
Hey Omar-

Thanks :

Here is what I get :

name@server.com's password:
Permission denied, please try again.
Permission denied, please try again.
Permission denied (publickey,password,keyboard-interactive).
0+0 records in
0+0 records out
0 bytes transferred in 43.284073 secs (0 bytes/sec)
bash-3.2$

I doubled checked to see if password was correct, but no go:

I even tried:
ssh user@serverA "ssh serverB tar -cf - /path/to/dir" | dd of=/path/to/local/dir/mybackup.tar

That is no user on second ssh, because login name the same ... to no avail. Any idears?

Thanks Again
0
 
LVL 40

Expert Comment

by:omarfarid
ID: 24021559
It seams that running the commands the way I described have problems in stdin redirection. The easiest way is to login to serverA via ssh ; then run

ssh user@serverB "tar cf - /path/to/dir" | dd of=/path/to/backup/serverB.tar

then logout from serverA, and run the below command on laptop

scp username@serverA:/path/to/backup/serverB.tar /path/to/dir/serverB.tar

0
VIDEO: THE CONCERTO CLOUD FOR HEALTHCARE

Modern healthcare requires a modern cloud. View this brief video to understand how the Concerto Cloud for Healthcare can help your organization.

 
LVL 48

Accepted Solution

by:
Tintin earned 2000 total points
ID: 24025993
No need for two lots of tar.

You can do it via an ssh tunnel.

First set up your tunnel

ssh -L 222:serverB:22 user@serverA

then in another window, you can talk directly to serverB via the tunnel, eg:

ssh -p 222 user@localhost "tar cf - /path/to/dir" | dd of=/path/to/backup/serverB.tar
0
 

Author Closing Comment

by:wotan1953
ID: 31564372
Sweet ... this is definitely the way to go. Thanks
0
 

Author Comment

by:wotan1953
ID: 24031203
hey I am asking another one:

Title: copying files across servers to my Mac laptop.

Question: I need to copy extra dirs/files from an external server, to my Mac Laptop.

I was thinking something like:

ssh username@remoteserver "scp /etc/mail/aliases_03032009.txt" | dd of=/path/to/local/dir//aliases_03032009.txt
         
0
 
LVL 48

Expert Comment

by:Tintin
ID: 24032733
If you have direct access to the server, then you just need

scp user@remoteserver:/etc/mail/aliases_03032009.txt .
0

Featured Post

Ask an Anonymous Question!

Don't feel intimidated by what you don't know. Ask your question anonymously. It's easy! Learn more and upgrade.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In tuning file systems on the Solaris Operating System, changing some parameters of a file system usually destroys the data on it. For instance, changing the cache segment block size in the volume of a T3 requires that you delete the existing volu…
This tech tip describes how to install the Solaris Operating System from a tape backup that was created using the Solaris flash archive utility. I have used this procedure on the Solaris 8 and 9 OS, and it shoudl also work well on the Solaris 10 rel…
Learn several ways to interact with files and get file information from the bash shell. ls lists the contents of a directory: Using the -a flag displays hidden files: Using the -l flag formats the output in a long list: The file command gives us mor…
Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
Suggested Courses

650 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question