[gentoo-user] "hostname -d" returns no domainname

[gentoo-user] "hostname -d" returns no domainname

[Alexander Skwar]

Hello!

alexander@blatt ~ $ hostname -d
alexander@blatt ~ $ cat /etc/conf.d/domainname
# /etc/conf.d/domainname

# When setting up resolv.conf, what should take precedence?
# If you wish to always override DHCP/whatever, set this to 1.
OVERRIDE=1

# To have a proper FQDN, you need to setup /etc/hosts and /etc/resolv.conf
# properly (domain entry in /etc/resolv.conf, and FQDN in /etc/hosts).
#
DNSDOMAIN="bei.digitalprojects.com"

# This only set what /bin/hostname returns.  If you need to setup NIS, meaning
# what /bin/domainname returns, please see:
#
#   http://www.linux-nis.org/nis-howto/HOWTO/
#
NISDOMAIN="bei.digitalprojects.com"

alexander@blatt ~ $

Why does "hostname -d" not return a domainname? I would have
thought, that the "DNSDOMAIN" setting in combination with
"OVERRIDE=1" would set a DNS domain.

Why's that not so?

The system gets configured using dhcp, using dhcpcd.

Alexander Skwar
-- 
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	Y'know how s'm people treat th'r body like a TEMPLE?
	Well, I treat mine like 'n AMUSEMENT PARK...  S'great...
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Re: [gentoo-user] "hostname -d" returns no domainname

[Neil Bothwick]

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On Fri, 26 May 2006 10:09:27 +0200, Alexander Skwar wrote:

> # To have a proper FQDN, you need to setup /etc/hosts
> and /etc/resolv.conf # properly (domain entry in /etc/resolv.conf, and
> FQDN in /etc/hosts).

What do these files contain?


-- 
Neil Bothwick

UNIX is the OS of the future and always will be...

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[gentoo-user] Re: "hostname -d" returns no domainname

[Alexander Skwar]

Neil Bothwick <neil <at> digimed.co.uk> writes:

> 
> On Fri, 26 May 2006 10:09:27 +0200, Alexander Skwar wrote:
> 
> > # To have a proper FQDN, you need to setup /etc/hosts
> > and /etc/resolv.conf # properly (domain entry in /etc/resolv.conf, and
> > FQDN in /etc/hosts).
> 
> What do these files contain?


alexander@blatt ~ $ grep -v \# /etc/hosts | grep -v '^$'
127.0.0.1       blatt
127.0.0.1       localhost
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
213.133.109.44  new.email-server.info

alexander@blatt ~ $ cat /etc/resolv.conf
# Generated by dhcpcd for interface ath0
search bei.digitalprojects.com
nameserver 192.168.1.1
nameserver 195.202.32.79
nameserver 82.207.232.1
nameserver 213.160.0.1

I don't think that I can set a "domain entry" in resolv.conf, as it's generated
by dhcpcd.

What does the DNSDOMAIN setting in /etc/conf.d/domainname do?

Alexander Skwar
-- 
There is brutality and there is honesty.  There is no such thing as brutal
honesty.

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Re: [gentoo-user] Re: "hostname -d" returns no domainname

[Zac Slade]

On Friday 26 May 2006 04:43, Alexander Skwar wrote:
> I don't think that I can set a "domain entry" in resolv.conf, as it's
> generated by dhcpcd.
The domainname start up script starts before DHCP so yes it would set it.  It 
doesn't depend on net.

> What does the DNSDOMAIN setting in /etc/conf.d/domainname do?
Here's what it used to do.  From my /etc/config-archive/etc/init.d/domainname:
start() {
    # Ensure that we have a hostname binary or function
        source /lib/rcscripts/net.modules.d/helpers.d/functions

        local retval=0
        local retval2=0

        if checkconfig_nis ; then
                ebegin "Setting NIS domainname to ${NISDOMAIN}"
                hostname -y "${NISDOMAIN}"
                retval=$?
                eend ${retval} "Failed to set the NIS domainname"
        fi

        if checkconfig_dns ; then
                ebegin "Setting DNS domainname to ${DNSDOMAIN}"
                resolv=$(grep -v '^[[:space:]]*domain' /etc/resolv.conf)
                [[ ${OVERRIDE} == "1" ]] \
                        && resolv="${resolv}"$'\n'"domain ${DNSDOMAIN}" \
                        || resolv="domain ${DNSDOMAIN}"$'\n'"${resolv}"
                echo "${resolv}" > /etc/resolv.conf
                retval2=$?
                eend ${retval2} "Failed to set the DNS domainname"
        fi

        return $((retval + retval2))
}

${DNSDOMAIN} and ${NISDOMAIN} are read out of /etc/conf.d/domainname earlier 
in the script.  So it does as I said it did it sets a domain line 
in /etc/resolv.conf.

However, this file does not exist in my /etc/init.d anymore.  I'm not sure 
when that changed or why.

-- 
Zac Slade
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ICQ:1415282 YM:krakrjak AIM:ttyp99
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Re: [gentoo-user] "hostname -d" returns no domainname

[Etaoin Shrdlu]

On Friday 26 May 2006 10:09, Alexander Skwar wrote:

> Hello!
>
> alexander@blatt ~ $ hostname -d
> alexander@blatt ~ $ cat /etc/conf.d/domainname
> # /etc/conf.d/domainname
>
> # When setting up resolv.conf, what should take precedence?
> # If you wish to always override DHCP/whatever, set this to 1.
> OVERRIDE=1
>
> # To have a proper FQDN, you need to setup /etc/hosts and
> /etc/resolv.conf # properly (domain entry in /etc/resolv.conf, and
> FQDN in /etc/hosts). #
> DNSDOMAIN="bei.digitalprojects.com"
>
> # This only set what /bin/hostname returns.  If you need to setup NIS,
> meaning # what /bin/domainname returns, please see:
> #
> #   http://www.linux-nis.org/nis-howto/HOWTO/
> #
> NISDOMAIN="bei.digitalprojects.com"
>
> alexander@blatt ~ $
>
> Why does "hostname -d" not return a domainname? I would have
> thought, that the "DNSDOMAIN" setting in combination with
> "OVERRIDE=1" would set a DNS domain.
>
> Why's that not so?
>
> The system gets configured using dhcp, using dhcpcd.

I seem to remember that this was somehow related to /etc/hosts, look:

# cat /etc/hosts
10.0.0.10  mybox   mybox.my.domain

# hostname -d
#
# (modify /etc/hosts)
# cat /etc/hosts
10.0.0.10  mybox.my.domain   mybox

# hostname -d
my.domain

Don't know whether dhcp changes all this.
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[gentoo-user] Re: "hostname -d" returns no domainname

[Alexander Skwar]

Etaoin Shrdlu <shrdlu <at> unlimitedmail.org> writes:

> I seem to remember that this was somehow related to /etc/hosts, look:
> 
> # cat /etc/hosts
> 10.0.0.10  mybox   mybox.my.domain
> 
> # hostname -d
> #
> # (modify /etc/hosts)
> # cat /etc/hosts
> 10.0.0.10  mybox.my.domain   mybox
> 
> # hostname -d
> my.domain

Great, this helped!

I now have:

alexander@blatt ~ $ grep -v \# /etc/hosts | grep -v '^$'
127.0.0.1       blatt.bei.digitalprojects.com   blatt
127.0.0.1       localhost
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
213.133.109.44  new.email-server.info

And:

alexander@blatt ~ $ hostname -d
bei.digitalprojects.com

But I'd still like to know what /etc/conf.d/domainname does... Or rather: Is
supposed to do :)

Alexander Skwar
-- 
There is brutality and there is honesty.  There is no such thing as brutal
honesty.

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Re: [gentoo-user] "hostname -d" returns no domainname

[Bo Ørsted Andresen]

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Friday 26 May 2006 10:46 skrev Etaoin Shrdlu:
> I seem to remember that this was somehow related to /etc/hosts, look:
>
> # cat /etc/hosts

Changing:

> 10.0.0.10  mybox   mybox.my.domain

to:

> 10.0.0.10  mybox.my.domain   mybox

has just solved this issue for me. :) Thanks!

> Don't know whether dhcp changes all this.

I am using dhcp.

-- 
Bo Andresen

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DNSDOMAIN in /etc/conf.d/domainname has no effect? (was: [gentoo-user] "hostname -d" returns no domainname)

[Alexander Skwar]

Bo Ørsted Andresen wrote:
> Friday 26 May 2006 10:46 skrev Etaoin Shrdlu:
>> I seem to remember that this was somehow related to /etc/hosts, look:
>>
>> # cat /etc/hosts
> 
> Changing:
> 
>> 10.0.0.10  mybox   mybox.my.domain
> 
> to:
> 
>> 10.0.0.10  mybox.my.domain   mybox
> 
> has just solved this issue for me. :) Thanks!

Same here!

But I wonder what this DNSDOMAIN setting in /etc/conf.d/domainname is
supposed to do. Because of

# When setting up resolv.conf, what should take precedence?
# If you wish to always override DHCP/whatever, set this to 1.
OVERRIDE=1

I thought that this setting would have an effect. Seems not so...

Alexander Skwar
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To the systems programmer, users and applications serve only to provide a
test load.
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Re: DNSDOMAIN in /etc/conf.d/domainname has no effect? (was: [gentoo-user] "hostname -d" returns no domainname)

[Zac Slade]

On Friday 26 May 2006 08:25, Alexander Skwar wrote:
> Bo Ørsted Andresen wrote:
> > Friday 26 May 2006 10:46 skrev Etaoin Shrdlu:
> >> I seem to remember that this was somehow related to /etc/hosts, look:
> >>
> >> # cat /etc/hosts
> >
> > Changing:
> >> 10.0.0.10  mybox   mybox.my.domain
> >
> > to:
> >> 10.0.0.10  mybox.my.domain   mybox
> >
> > has just solved this issue for me. :) Thanks!
Here is why this solved the issue for you.  hostname -d and hostname --fqdn 
get the domain part by using gethostbyname() so it does a DNS lookup on your 
hostname.  If your /etc/hosts.conf is set to files, bind then it will look 
your hostname up in /etc/hosts then query DNS.  If your /etc/hosts file has 
an FQDN entry for your hostname then all is well.  If not then your hostname 
is queried in DNS using the domain statement in /etc/resolv.conf.

> But I wonder what this DNSDOMAIN setting in /etc/conf.d/domainname is
> supposed to do. Because of
It sets the domain in /etc/resolv.conf

> # When setting up resolv.conf, what should take precedence?
> # If you wish to always override DHCP/whatever, set this to 1.
> OVERRIDE=1
>
> I thought that this setting would have an effect. Seems not so...
This will determin whether DHCP will be allowed to replace your domain 
statement in /etc/resolv.conf.

I hope this clears it up.
-- 
Zac Slade
krakrjak@volumehost.net
ICQ:1415282 YM:krakrjak AIM:ttyp99

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[gentoo-user] Re: DNSDOMAIN in /etc/conf.d/domainname has no effect?

[Alexander Skwar]

Zac Slade wrote:
> On Friday 26 May 2006 08:25, Alexander Skwar wrote:

>> But I wonder what this DNSDOMAIN setting in /etc/conf.d/domainname is
>> supposed to do. Because of
> It sets the domain in /etc/resolv.conf

No, it doesn't.

>> # When setting up resolv.conf, what should take precedence?
>> # If you wish to always override DHCP/whatever, set this to 1.
>> OVERRIDE=1
>>
>> I thought that this setting would have an effect. Seems not so...
> This will determin whether DHCP will be allowed to replace your domain 
> statement in /etc/resolv.conf.

That's not what happens.

alexander@blatt ~ $ grep -v -e '#' -e '^$' /etc/conf.d/domainname
OVERRIDE=1
DNSDOMAIN="bei.digitalprojects.com"
NISDOMAIN="bei.digitalprojects.com"

alexander@blatt ~ $ cat /etc/resolv.conf
# Generated by dhcpcd for interface ath0
search bei.digitalprojects.com
nameserver 192.168.1.1
nameserver 195.202.32.79
nameserver 82.207.232.1
nameserver 213.160.0.1

> I hope this clears it up.

Nope :(

Alexander Skwar
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A:	A dinner party.
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Re: [gentoo-user] Re: DNSDOMAIN in /etc/conf.d/domainname has no effect?

[Hans-Werner Hilse]

Hi,

On Fri, 26 May 2006 19:40:02 +0200
Alexander Skwar <listen@alexander.skwar.name> wrote:

> Zac Slade wrote:
> > On Friday 26 May 2006 08:25, Alexander Skwar wrote:
> 
> >> But I wonder what this DNSDOMAIN setting in /etc/conf.d/domainname is
> >> supposed to do. Because of
> > It sets the domain in /etc/resolv.conf
> 
> No, it doesn't.

Well, it does (in /etc/init.d/domainname). But this is obviously
overwritten in your case by dhcp settings.

You're right with that OVERRIDE=1 doesn't fix this. Another start
of /etc/init.d/domainname should. The OVERRIDE flag just decides
whether the new "domain" setting goes to the start or the bottom
(OVERRIDE=1) of /etc/resolv.conf (that has influence, because
resolv.conf(5) says: "the last instance wins"). So what's probably
missing is another call to /etc/init.d/domainname after DHCP has set up
the interface.

-hwh
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