Re: [Fab-user] sudo fails every now and again

[Hajducko, Steven]

>First time it prompts me for a password - why? As far as I understand Fabric should be able to handle this?

 

I’m not sure what you mean by ‘Fabric should be able to handle this’.  Sudo is prompting you for a password because that’s how sudo works.  If your credentials are not cached, you get a password prompt, then a timer starts.  When that timer expires, you have to enter your password again for sudo.  Sorry if you know all that – not trying to be patronizing.

 

Fabric handles interactive prompts by by passing the prompt back to you.  It doesn’t have an expect like behavior where it sees a password prompt and passes in the password ( from what I know and someone correct me if I’m wrong ).

 

If you don’t want a password prompt, you’ll have to change your sudoers to NOPASSWD.

 

--

sh

 

From: address@hidden [mailto:address@hidden On Behalf Of address@hidden
Sent: Friday, December 02, 2011 12:13 AM
To: Paul Hoffman
Cc: address@hidden
Subject: Re: [Fab-user] sudo fails every now and again

 

Seems your right, quick test :

 

fab -H dns1 dns_restart

[dns1] Executing task 'dns_restart'

[dns1] sudo: service bind9 restart

[dns1] out: sudo password: 

 * Stopping domain name service... bind9

[dns1] out:    ...done.

[dns1] out:  * Starting domain name service... bind9

[dns1] out:    ...done.

 

 

Done.

Disconnecting from dns1... done.

address@hidden:/opt/git/bin$ fab -H dns1 dns_restart

[dns1] Executing task 'dns_restart'

[dns1] sudo: service bind9 restart

[dns1] out:  * Stopping domain name service... bind9

[dns1] out:    ...done.

[dns1] out:  * Starting domain name service... bind9

[dns1] out:    ...done.

 

 

First time it prompts me for a password - why? As far as I understand Fabric should be able to handle this?

Give the password and then the script runs without a hitch on re-runs afterwards.

 

On Thu, Dec 1, 2011 at 6:59 PM, Paul Hoffman <address@hidden> wrote:

I suspect that most of the time, sudo is being run when a password is
needed (that is, there hasn't been a recent sudo from that user), but
in the failure times, sudo is not prompting for a password because it
isn't needed.

Does Fabric itself assume that a password is needed every time?

--Paul Hoffman