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resolv.conf is changed when linode is rebooted
https://forum.linode.com/viewtopic.php?f=19&t=2368		 Page 1 of 1
Author:  caveman [ Wed Jul 12, 2006 12:34 am ]
Post subject:  resolv.conf is changed when linode is rebooted
I'm running Slackware 10. I run netconfig to set the ip a static address and dns server, and confirm that etc/resolv.conf is updated. When I reboot the linode my resolv.conf has all the name servers removed and only one line for the search domain. Any ideas?
Author:  gmt [ Wed Jul 12, 2006 8:27 am ]
Post subject: 
Linode changes resolv.conf on boot, to set default nameservers. If you modify resolv.conf I have no idea what you will get when booting.
Author:  caker [ Wed Jul 12, 2006 3:38 pm ]
Post subject: 
gmt wrote:
Linode changes resolv.conf on boot, to set default nameservers. If you modify resolv.conf I have no idea what you will get when booting.

We do? That's news to me. :)

It's usually dhcpd that's the culprit, or some other init script.

-Chris
Author:  gmt [ Wed Jul 12, 2006 5:15 pm ]
Post subject: 
The date on /etc/resolv.conf changes every time I reboot, and I certainly didn't configure it.
Author:  pclissold [ Wed Jul 12, 2006 6:15 pm ]
Post subject: 
On my Linode (running Gentoo), /etc/init.d/domainname has a tinker with /etc/resolv.conf at every boot. My emergency Debian doesn't look as if any changes are made during boot.
Author:  Bdragon [ Wed Jul 12, 2006 6:54 pm ]
Post subject: 
*edit* Missed the part about you using static config...

What's your /etc/rc.d/rc.inet1.conf look like?

If you have a line like
Code:
USE_DHCP[0]="yes"
in there, it will still kick in the dhcp client...


------------------ original text follows --------------------
I'm betting it's dhcpcd doing that.

Run it with the -R option.

Read the manpage for dhcpcd.

Fix:
Look for "/sbin/dhcpcd" in /etc/rc.d/rc.inet1

Add the -R switch to the command invocation on interface start (probabaly around line 74)

Code:
          echo "/etc/rc.d/rc.inet1:  /sbin/dhcpcd -d -t 10 -h ${DHCP_HOSTNAME[$1
]} eth${1}" | $LOGGER
          /sbin/dhcpcd -d -t 10 -h ${DHCP_HOSTNAME[$1]} eth${1}
        else
          echo "/etc/rc.d/rc.inet1:  /sbin/dhcpcd -d -t 10 eth${1}" | $LOGGER
          /sbin/dhcpcd -d -t 10 eth${1}
        fi

becomes
Code:
          echo "/etc/rc.d/rc.inet1:  /sbin/dhcpcd -d -R -t 10 -h ${DHCP_HOSTNAME[$1
]} eth${1}" | $LOGGER
          /sbin/dhcpcd -d -R -t 10 -h ${DHCP_HOSTNAME[$1]} eth${1}
        else
          echo "/etc/rc.d/rc.inet1:  /sbin/dhcpcd -d -R -t 10 eth${1}" | $LOGGER
          /sbin/dhcpcd -d -t 10 eth${1}
        fi
Author:  caveman [ Thu Jul 13, 2006 7:24 pm ]
Post subject: 
What's your /etc/rc.d/rc.inet1.conf look like?

If you have a line like Code:
USE_DHCP[0]="yes"
in there, it will still kick in the dhcp client...


It was USE_DHCP[0]=""

I changed it to USE_DHCP[0]="No" and it fixed it.
Author:  Jay [ Fri Jul 14, 2006 8:45 am ]
Post subject: 
Also be aware that if a package named "resolvconf" is installed, it will eat your /etc/resolv.conf on boot (do an ls -l /etc/resolv.conf and make sure it's NOT a symlink)
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