Generating and using ssh keys for automated backups

1. Log in, on your local system, AS THE USER you wish to make passwordless ssh connections

2. run the following:

	ssh-keygen -t rsa

	Accept the defaults - do not change the filenames or file locations
	It is very important that the resultant private and public keys reside in your
	home directories .ssh directory, or ~/.ssh (which is the default)

	DO NOT enter a passphrase - just hit enter twice, leaving an empty passphrase.

3. Upload your public key to your sync.coaly.net filesystem:

	scp ~/.ssh/id_rsa.pub 
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 :.ssh/authorized_keys

	DO NOT change the permissions on the uploaded file, before or after the upload
	DO NOT change the permissions on your home directory, or your .ssh directory
	NOTE: 1234@sync is most certainly NOT your login ID or hostname - 
              please change them.

4. Test that your key works by ssh'ing to your coaly.net filesystem 
   (from your local system, as the user who created/uploaded the key):

	ssh 
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  ls

	You should not be asked for a password

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Multiple Keys:

It is possible to upload multiple public keys to your coaly.net account, allowing 
one or more users on one or more computer systems to log in without a password.  
However, you cannot just follow the above instructions over and over again, because 
each time you follow them, you will overwrite the previous key.  Instead, do this:

1. For the first user on the first computer system, follow the instructions above exactly.

2. For each subsequent user (possibly on different computer systems), replace step #3 above 
   with this instead:

  cat ~/.ssh/id_rsa.pub | ssh 
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  'dd of=.ssh/authorized_keys oflag=append conv=notrunc'


3. Repeat this process for each user until you have a fully populated authorized_keys file in your coaly.net
   account.

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If you have _any problems_ with this process, do not hesitate to email 
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  - we will help
you immediately, and have you up and running that same day.