On 08/02/10 13:17, Daniel beas wrote:
> 
> Hi to all.
> I have a dsl connection with a dynamic ip and actually i'm resolving it
> with a subdomain from no-ip but sometimes i get this error
> gethostbyname() for host "mydomain.zapto.org" failed:
> ERR=Non-authoritative for host not found, or ServerFail.
> So i'm trying to change the way i get the ip for the Storage daemon by
> getting my public ip with a shell script (ran before the job) and
> putting it in a variable.
> 
> IP=`wget -q -O - checkip.dyndns.org|sed -e 's/.*Current IP Address://'
> -e 's/<.*$//'`
> 
> The problem i have is how can bacula-dir.conf get the $IP variable?
> 
> i tried just this way but it doesn work
> Storage {
>    Name = sxxx
>    Address = $IP
>    SDPort = 9103
>    Password = "SHexZ8mwXW4YkbJgu2HpJloZfkuT5Pj5yyWLiPxBhoZy"
>    device = dxxx
>    Media type = File
> }
> 
> and then tried using brackets this way
> Storage {
>    Name = sxxx
>    Address = {$IP}
>    SDPort = 9103
>    Password = "SHexZ8mwXW4YkbJgu2HpJloZfkuT5Pj5yyWLiPxBhoZy"
>    device = dxxx
>    Media type = File
> }
> but looks like bacula thinks there finish the storage resource

Well, that latter syntax would be wrong for shell expansion; it would be
${IP}, not {$IP}.  But correct shell expansion is moot in the first
place because Bacula does not perform shell expansion when loading its
config files.

About the only practical way you can do this is to maintain a template
config, generate a "live" config by processing the template and
replacing the IP, then starting Bacula on the live config.  So you'd do
something like this:

# bacula-dir.template
Storage {
    Name = sxxx
    Address = MYADDRESS
    SDPort = 9103
    Password = "SHexZ8mwXW4YkbJgu2HpJloZfkuT5Pj5yyWLiPxBhoZy"
    device = dxxx
    Media type = File
}

# prepscript
#!/bin/bash
IP=$(whatever means to get IP here)
cat bacula-dir.template | sed -e "s/MYADDRESS/${IP}/" > bacula-dir.conf
/etc/init.d/bacula start

This step could probably actually be incorporated into your Bacula
startup script.

You're also going to have to make your Director and your storage daemon
listen on both your internal address and your public IP, unless your
router is taking care of this via NAT.


All this said, I can't help but think there has to be an easier way to
do this, but it's hard to tell without knowing what your actual
infrastructure situation is.  Do I understand correctly that you are
trying to make backups, over DSL, to a remote storage host on a
dynamic-IP connection somewhere off in the outside world?  Or are you
trying to back up remote clients to a local storage daemon over a
dynamic-IP DSL connection?  Either way seems likely to be both extremely
unreliable and, more likely than not, infeasibly slow.


-- 
  Phil Stracchino, CDK#2     DoD#299792458     ICBM: 43.5607, -71.355
  alaric AT caerllewys DOT net   alaric AT metrocast DOT net   phil AT 
co.ordinate DOT org
         Renaissance Man, Unix ronin, Perl hacker, Free Stater
                 It's not the years, it's the mileage.

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