Re: [Duplicity-talk] Backup fails only from cron

[Kenneth Loafman]

Hi,

cron runs as root, so I'm guessing that your SSH key is under your user,
not root.

The way I handle it is to use a ~/.ssh/config file with contents like:
# cat .ssh/config
IdentityFile /home/ken/.ssh/id_rsa
IdentityFile /home/ken/.ssh/id_dsa

...Ken

address@hidden wrote:
> How are you telling ssh the password for your key (when run by cron)?
>
> ..ede/duply.net
>
>
> On 30.07.2010 13:08, Adam Huffman wrote:
>> I'm trying to setup automated backups via cron on a Fedora 13 system,
>> connecting to a Centos 5.5 server.
>>
>> When I run the simple script interactively, it works fine, using an
>> SSH key to connect to the server.
>>
>> When I schedule the script via cron it fails with the "Invalid SSH
>> password" error.
>>
>> Here's the traceback:
>>
>>
>> Backend error detail: Traceback (most recent call last):
>>    File "/usr/bin/duplicity", line 1239, in<module>
>>      with_tempdir(main)
>>    File "/usr/bin/duplicity", line 1232, in with_tempdir
>>      fn()
>>    File "/usr/bin/duplicity", line 1133, in main
>>      sync_archive()
>>    File "/usr/bin/duplicity", line 910, in sync_archive
>>      remlist = globals.backend.list()
>>    File
>> "/usr/lib64/python2.6/site-packages/duplicity/backends/sshbackend.py",
>> line 270, in list
>>      l = self.run_sftp_command(commandline, commands).split('\n')[1:]
>>    File
>> "/usr/lib64/python2.6/site-packages/duplicity/backends/sshbackend.py",
>> line 197, in run_sftp_command
>>      raise BackendException("Error running '%s'" % commandline)
>>
>> I've seen similar errors reported and there's
>> https://bugs.launchpad.net/duplicity/+bug/411145, though there's no
>> sign of a "Couldn't get handle" error in my case.
>>
>> The problem occurs both with the current Fedora package 0.6.08b and
>> with a local build of the latest version 0.6.09.
>>
>> Here's the redacted script:
>>
>>
>> #!/bin/sh
>> # Script to backup $HOME
>>
>> export PASSPHRASE="<passphrase>"
>>
>> duplicity -v 9 --ssh-options="-oIdentityFile=/home/linda/.ssh/id_dsa"
>> /home/linda scp://linda@<remote server>//home2/linda
>>
>>
>> Adam
>>
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>
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