Ssh – Using rsync over ssh using public/private key not working

rsyncssh

I have a script that is in backup.sh file (chmod 775) :

rsync -e 'ssh -p 31234' -avlz --delete --stats --progress --copy-links admin@foo.xen.prgmr.com:/home/admin/rsync /home/myname/rsync/foo/

When I call it manually, everything works well (and I don't have to enter my passphrase). But when I call it from cron, it just doesn't work.

I used the same setup on the computer of my coworker (who has the same access than me) and it works well.

What's wrong?

Best Answer

I have my passpharseless ssh login setup. I use a command like the following: rsync --delete -auve 'ssh -i /home/red/.ssh/cron_jobs_key' red@othermachine:/source/dir1 /dest/dir2

The key here is "-i /home/red/.ssh/cron_jobs_key" where I have setup an ssh login without a password. Otherwise, I would have to enter my ssh key when I login to my local machine. I generated this ssh key specifically for cron jobs.

Related Solutions

How to Use Rsync Over FTP

You don't. rsync can't do that for you, it is a protocol of its own and doesn't work over FTP.

You might, however, want to try csync. IIRC it provides rsync-like behaviour over HTTP. I can't comment on whether it works over FTP, you'll have to try it.

SSH – How to Change Private Key Passphrase

To change the passphrase on your default key:

$ ssh-keygen -p

If you need to specify a key, pass the -f option:

$ ssh-keygen -p -f ~/.ssh/id_dsa

then provide your old and new passphrase (twice) at the prompts. (Use ~/.ssh/id_rsa if you have an RSA key.)

More details from man ssh-keygen:

[...]
SYNOPSIS
    ssh-keygen [-q] [-b bits] -t type [-N new_passphrase] [-C comment]
               [-f output_keyfile]
    ssh-keygen -p [-P old_passphrase] [-N new_passphrase] [-f keyfile]
[...]
     -f filename
             Specifies the filename of the key file.
[...]
     -N new_passphrase
             Provides the new passphrase.

     -P passphrase
             Provides the (old) passphrase.

     -p      Requests changing the passphrase of a private key file instead of
             creating a new private key.  The program will prompt for the file
             containing the private key, for the old passphrase, and twice for
             the new passphrase.
[...]

Best Answer

Related Solutions

How to Use Rsync Over FTP

SSH – How to Change Private Key Passphrase

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