Re: [Fab-user] fab sudo() doesn't seem to work

[Christian Vest Hansen]

Fabric handles log tailing badly. If you log into multiple servers and
tail a log file, you will only get output from the server that is
listed first in the fab_hosts variable.

What happens is that fabric will execute tail on the first server, and
then wait for it to finish. Unfortunately, by nature of any tail -f
command, the tail process will never terminate and this causes fabric
to hang, and never proceed to execute tail on the other connected
hosts.

It might be that Jeff got something working in his experimental
execution branch, but for mainline Fabric 0.0.9, tailing log files is
something that fabric really sucks at.

On Thu, Oct 9, 2008 at 5:53 PM,  <address@hidden> wrote:
> Yes, fab logs in to the server - I use ssh keyfiles so there's no prompt.  I
> tried a run('ls') before the sudo command and it works fine.  As for new
> lines being appended to the log file, I don't think there were, but I'll
> check.
>
> Any other suggestions/ideas?  Thank you!
>
>
>
> On Wed, Oct 8, 2008 at 7:06 PM, Christian Vest Hansen <address@hidden>
> wrote:
>>
>> Did you get to log in to the server properly? As in, being prompted
>> for a password and all that.
>>
>> What happens if you first do a run('echo hello') before the sudo()
>> operation?
>>
>> Lastly, while you where sitting there waiting for something to happen,
>> were there actually any new lines appended to that log file?
>>
>> On Thu, Oct 9, 2008 at 12:42 AM,  <address@hidden> wrote:
>> > Whenever I use the fab sudo command, I see the command echoed on screen,
>> > but
>> > never see a password prompt; it just seems to hang.  Hitting CTRL-C
>> > breaks
>> > out of it with an error message like,
>> >
>> > Error: The sudo operation failed on myserver.com:
>> >     <lambda>() takes no arguments (2 given)
>> > [pickii.com] err: [sudo] password for some_user:
>> >
>> >
>> > In this particular case, the fabfile command looks like,
>> >
>> > sudo('tail /var/log/apache2/error.log')
>> >
>> > Probably I'm doing something stupid, would appreciate any pointers,
>> > thanks!
>> >
>> > Shev
>> >
>> > _______________________________________________
>> > Fab-user mailing list
>> > address@hidden
>> > http://lists.nongnu.org/mailman/listinfo/fab-user
>> >
>> >
>>
>>
>>
>> --
>> Venlig hilsen / Kind regards,
>> Christian Vest Hansen.
>
>



-- 
Venlig hilsen / Kind regards,
Christian Vest Hansen.