Re: ****Re: ****Re: ****OT?: Now mysteriously have a hostname defined

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On Mon, Mar 31, 2008 at 7:55 AM, Craig White <craigwhite@xxxxxxxxxxx> wrote:
On Mon, 2008-03-31 at 06:31 +0800, Fennix wrote:
> On Mon, Mar 31, 2008 at 6:15 AM, Craig White <craigwhite@xxxxxxxxxxx>
> wrote:
>         On Mon, 2008-03-31 at 05:56 +0800, Fennix wrote:
>         > On Mon, Mar 31, 2008 at 5:55 AM, Fennix
>         <cn.stefan@xxxxxxxxx> wrote:
>         >         [root@bogon log]# cat /etc/sysconfig/network
>         >         NETWORKING=yes
>         >         HOSTNAME=localhost.localdomain
>         >         [root@bogon log]#
>         >
>         >
>         >         On Mon, Mar 31, 2008 at 5:50 AM, Craig White
>         >         <craigwhite@xxxxxxxxxxx> wrote:
>         >                 On Mon, 2008-03-31 at 05:44 +0800, Fennix
>         wrote:
>         >                 > I noticed today in my terminal window I
>         now have a
>         >                 host name of
>         >                 > "bogon".  I had never set a hostname for
>         my Fedora8
>         >                 home system.  I
>         >                 > can see from my logwatch and cron system
>         mails that
>         >                 the delivery to
>         >                 > this host name started March 25th but none
>         of my
>         >                 mails shows anything
>         >                 > that seems relevant to what has set this
>         hostname.
>         >                  Oddly on the 26th
>         >                 > the system mails were addresses again to
>         >                 localhost.localdomain but
>         >                 > again reverted on the 27th to being
>         addresses to
>         >                 bogon.  I have
>         >                 > checked the man pages on the hostname
>         command to
>         >                 locate where the name
>         >                 > is defined.  Have checked the
>         >                 >
>         files /etc/host, /etc/hosts.conf, /etc/hostname
>         >                 (does not
>         >                 > exist), /etc/nsswitch.conf, ... but this
>         name does
>         >                 not show in any of
>         >                 > the files I have looked at so far.  Any
>         ideas where
>         >                 to look further?
>         >                 > I am now wondering whether my system has
>         been
>         >                 compromised somehow...
>         >                 > Googleing the word bogon shows me the
>         meaning of of
>         >                 bogon which does
>         >                 > not seem helpful in this case.
>         >                 >
>         >                 > Checking /var/log/messages-20080330 shows
>         the use of
>         >                 this hostname
>         >                 > with a reboot I had done on the 24th.
>          Still cannot
>         >                 see where or how
>         >                 > this was set.
>         >                 ----
>         >                 what is output of?
>         >
>         >                 cat /etc/sysconfig/network
>         >
>         >                 Craig
>         >
>         > Ooops....
>         >
>         >
>         > [root@bogon log]# cat /etc/sysconfig/network
>         > NETWORKING=yes
>         > HOSTNAME=localhost.localdomain
>         ----
>         sounds as if the name is attached to either:
>         - NetworkManager and since I don't use it, I don't know where
>         it might
>         store supplemental settings...
>         - the configuration of the device itself
>         - in some script that sets the name somewhere.
>
>         is this system using DHCP to get its ip address?
>         if so, what is ouput of...
>         /etc/dhclient-eth0.conf
>
>         I think that if the hostname is 'reset', it should be
>         reflected in
>         syslog...
>         what is output of...
>         grep Host /var/log/messages
>
>         Might it be set in /etc/rc.d/rc.local?
>         tail /etc/rc.d/rc.local # should look very much like this and
>         anything
>                                # additional might be a script that
>         sets it
>         #!/bin/sh
>         #
>         # This script will be executed *after* all the other init
>         scripts.
>         # You can put your own initialization stuff in here if you
>         don't
>         # want to do the full Sys V style init stuff.
>
>         touch /var/lock/subsys/local
>
>         Craig
>
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>
>
> Hi Craig,
>
> Yes this pc does get its address using DHCP but the
> file /etc/dhclient-eth0.conf does not exist in etc.  The only file
> name starting with dhcp is dhcpd.conf and the contents appear to be a
> generic sample.
>
> The output from /var/log/messages is as follows:
>
> [root@bogon log]# grep Host /var/log/messages-20080323
> Mar 17 13:05:07 localhost kernel: ehci_hcd 0000:00:1d.7: EHCI Host
> Controller
> Mar 17 13:05:07 localhost kernel: USB Universal Host Controller
> Interface driver v3.0
> Mar 17 13:05:07 localhost kernel: uhci_hcd 0000:00:1d.0: UHCI Host
> Controller
> Mar 17 13:05:07 localhost kernel: uhci_hcd 0000:00:1d.1: UHCI Host
> Controller
> Mar 17 13:05:07 localhost kernel: uhci_hcd 0000:00:1d.2: UHCI Host
> Controller
> Mar 17 13:05:07 localhost kernel: uhci_hcd 0000:00:1d.3: UHCI Host
> Controller
> Mar 17 13:05:13 localhost avahi-daemon[2362]: Server startup complete.
> Host name is linux.local. Local service cookie is 2257381510.
> Mar 19 02:13:53 localhost kernel: ehci_hcd 0000:00:1d.7: EHCI Host
> Controller
> Mar 19 02:13:53 localhost kernel: USB Universal Host Controller
> Interface driver v3.0
> Mar 19 02:13:53 localhost kernel: uhci_hcd 0000:00:1d.0: UHCI Host
> Controller
> Mar 19 02:13:53 localhost kernel: uhci_hcd 0000:00:1d.1: UHCI Host
> Controller
> Mar 19 02:13:53 localhost kernel: uhci_hcd 0000:00:1d.2: UHCI Host
> Controller
> Mar 19 02:13:53 localhost kernel: uhci_hcd 0000:00:1d.3: UHCI Host
> Controller
> Mar 19 02:13:59 localhost avahi-daemon[2362]: Server startup complete.
> Host name is linux.local. Local service cookie is 1223127342.
> [root@bogon log]# grep Host /var/log/messages-20080330
> Mar 24 04:52:18 bogon kernel: ehci_hcd 0000:00:1d.7: EHCI Host
> Controller
> Mar 24 04:52:18 bogon kernel: USB Universal Host Controller Interface
> driver v3.0
> Mar 24 04:52:18 bogon kernel: uhci_hcd 0000:00:1d.0: UHCI Host
> Controller
> Mar 24 04:52:18 bogon kernel: uhci_hcd 0000:00:1d.1: UHCI Host
> Controller
> Mar 24 04:52:18 bogon kernel: uhci_hcd 0000:00:1d.2: UHCI Host
> Controller
> Mar 24 04:52:18 bogon kernel: uhci_hcd 0000:00:1d.3: UHCI Host
> Controller
> Mar 24 04:52:24 bogon avahi-daemon[2398]: Server startup complete.
> Host name is bogon.local. Local service cookie is 3193077034.
> Mar 26 01:25:32 localhost kernel: ehci_hcd 0000:00:1d.7: EHCI Host
> Controller
> Mar 26 01:25:32 localhost kernel: USB Universal Host Controller
> Interface driver v3.0
> Mar 26 01:25:32 localhost kernel: uhci_hcd 0000:00:1d.0: UHCI Host
> Controller
> Mar 26 01:25:32 localhost kernel: uhci_hcd 0000:00:1d.1: UHCI Host
> Controller
> Mar 26 01:25:32 localhost kernel: uhci_hcd 0000:00:1d.2: UHCI Host
> Controller
> Mar 26 01:25:32 localhost kernel: uhci_hcd 0000:00:1d.3: UHCI Host
> Controller
> Mar 26 01:25:36 localhost avahi-daemon[2319]: Server startup complete.
> Host name is linux.local. Local service cookie is 1396103600.
> Mar 27 13:35:16 bogon kernel: ehci_hcd 0000:00:1d.7: EHCI Host
> Controller
> Mar 27 13:35:16 bogon kernel: USB Universal Host Controller Interface
> driver v3.0
> Mar 27 13:35:16 bogon kernel: uhci_hcd 0000:00:1d.0: UHCI Host
> Controller
> Mar 27 13:35:16 bogon kernel: uhci_hcd 0000:00:1d.1: UHCI Host
> Controller
> Mar 27 13:35:16 bogon kernel: uhci_hcd 0000:00:1d.2: UHCI Host
> Controller
> Mar 27 13:35:16 bogon kernel: uhci_hcd 0000:00:1d.3: UHCI Host
> Controller
> Mar 27 13:35:22 bogon avahi-daemon[2381]: Server startup complete.
> Host name is bogon.local. Local service cookie is 2714176635.
> [root@bogon log]# grep Host /var/log/messages
> Mar 31 04:32:20 bogon kernel: ehci_hcd 0000:00:1d.7: EHCI Host
> Controller
> Mar 31 04:32:20 bogon kernel: USB Universal Host Controller Interface
> driver v3.0
> Mar 31 04:32:20 bogon kernel: uhci_hcd 0000:00:1d.0: UHCI Host
> Controller
> Mar 31 04:32:20 bogon kernel: uhci_hcd 0000:00:1d.1: UHCI Host
> Controller
> Mar 31 04:32:20 bogon kernel: uhci_hcd 0000:00:1d.2: UHCI Host
> Controller
> Mar 31 04:32:20 bogon kernel: uhci_hcd 0000:00:1d.3: UHCI Host
> Controller
> Mar 31 04:32:25 bogon avahi-daemon[2339]: Server startup complete.
> Host name is bogon.local. Local service cookie is 4272874820.
>
> Running tail /etc/rc.d/rc.local gives me identical results to your
> sample.
>
> Thank you very much for your suggestions. Not clear on the meaning of
> the output from messages....The host name should not be derived from
> the computer hardware/firmware.
----
I'm thinking that the name must be coming from your dhcp server or from
the config file for the network adaptor...

what is output of?
grep HOST /etc/sysconfig/network-scripts/ifcfg-eth0

what is providing DHCP to this system?

Craig

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Hi Craig,

Still have not determined the cause of the hostname becoming set.  My suspicion now is that it might be DHCP.  I have now reset the hostname by setting up the /etc/hostname file then running "hostname -F /etc/hostname".  I wish I could have determined the cause of this but if what I have done is permanent then I will live with that.
  Thank you again for your help.

Fennix

PS:  Thank you to kalinux as well for your suggestion.  The avahi daemon was running so I have stopped that service (since it definitely is unnecessary) but after rebooting I still did have the bogon hostname for my system.  I have overridden the name using the hostname command and making a hostname file.

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