[CentOS] dhcp server

[Boris Epstein]

On Mon, Aug 9, 2010 at 1:15 AM, Richard Gliebe <richard.gliebe at fhv.at> wrote:
>
> Hi all,
>
> this is my first post on this list, hope someone can help me.
>
> I have to run a dhcp server on CentOS release 5.5 (Final).
>
> # yum list| grep -i dhcp
> dhcp.x86_64             12:3.0.5-23.el5 installed
> dhcp-devel.x86_64       12:3.0.5-23.el5 installed
> dhcpv6-client.x86_64    1.0.10-18.el5   installed
>
> after starting the dhcpd daemon, the windows Clients on the subnet
> (192.168.100.0/24) tells me, that there is no dhcp server available.
>
> # /etc/init.d/dhcpd configtest
> Syntax: OK
>
> [/var/log/messages]
> Aug  9 07:11:14 tfelx01 dhcpd: Internet Systems Consortium DHCP Server
> V3.0.5-RedHat
> Aug  9 07:11:14 tfelx01 dhcpd: Copyright 2004-2006 Internet Systems
> Consortium.
> Aug  9 07:11:14 tfelx01 dhcpd: All rights reserved.
> Aug  9 07:11:14 tfelx01 dhcpd: For info, please visit
> http://www.isc.org/sw/dhcp/
> Aug  9 07:11:14 tfelx01 dhcpd: Wrote 0 leases to leases file.
> Aug  9 07:11:14 tfelx01 dhcpd: Listening on
> LPF/eth0/00:1a:64:b6:1d:1c/192.168.100/24
> Aug  9 07:11:14 tfelx01 dhcpd: Sending on
> LPF/eth0/00:1a:64:b6:1d:1c/192.168.100/24
> Aug  9 07:11:14 tfelx01 dhcpd: Sending on   Socket/fallback/fallback-net
>
> this is my /etc/dhcpd.conf
>
> # cat /etc/dhcpd.conf
> authoritative;
> ddns-update-style interim;
> subnet 192.168.100.0 netmask 255.255.255.0 {
>         option routers                  192.168.100.11;
>         option subnet-mask              255.255.255.0;
>
>         option domain-name              "<mydomain>.local";
>         option domain-name-servers       192.168.100.2;
>
>         option time-offset              -18000;     # Eastern Standard Time
>
>        range 192.168.100.150 192.168.100.199;
> }
>
> what do I'm missing? or is there a config mismatch?
>
> many thanks
> Richard
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Richard,

I don't have time to go through that config line by line but here is
mine that works. It is not perfect, has some unnecessary stuff in it,
the domain used is a private domain but like I said it works so it
must have at least as much as necessary to make it work.

------------------------------------------------------------------------------------

[bepstein at dellnikon ~]$ more /etc/dhcpd.conf
ddns-update-style interim;
ignore client-updates;

subnet 192.168.65.0 netmask 255.255.255.128 {

# --- default gateway
	option routers			192.168.65.1;
	option subnet-mask		255.255.255.128;

	option nis-domain		"nrims";
	option domain-name		"nrims";
	option domain-name-servers	192.168.65.1,132.183.243.118,132.183.1.1
1;

	option time-offset		-18000;	# Eastern Standard Time
#	option ntp-servers		192.168.1.1;
#	option netbios-name-servers	192.168.1.1;
# --- Selects point-to-point node (default is hybrid). Don't change this unless
# -- you understand Netbios very well
#	option netbios-node-type 2;

	default-lease-time 21600;
	max-lease-time 43200;
	range 192.168.65.50 192.168.65.125;

	# we want the nameserver to appear at a fixed address
	host ns {
		next-server marvin.redhat.com;
		hardware ethernet 12:34:56:78:AB:CD;
		fixed-address 207.175.42.254;
	}
}
[bepstein at dellnikon ~]$

-------------------------------------------------------------------------------------

Hope it helps.

Boris.