DHCP failover won't start

Tue Sep 4 12:17:22 UTC 2007

Ahh. Recover mode is used when the hosts have communicated before - it
will wait until mtbf expires (1800 seconds) before moving to the next
step. If these are new servers, try creating zero length dhcpd.conf
files and restarting. It's possible that your editting of the
dhcpd.leases file has confused the daemon. See the dhcpd.conf man page,
the section on FAILOVER STARTUP.

Also look in /var/adm/messages, you will get some dhcp messages there,
including status after dhcpd starts:

Sep  4 22:08:02 chisel dhcpd: [ID 702911 local7.info] failover peer 
Uniq14subnet: peer moves from normal to communications-interrupted
Sep  4 22:08:02 chisel dhcpd: [ID 702911 local7.info] failover peer 
Uniq14subnet: I move from startup to normal

Or you may need to log daemon.debug to a separate file to get the full
range of messages.

regards,
-glenn

>From: "Arno _" <r_no at hotmail.com>
>To: dhcp-users at isc.org
>Subject: Re: DHCP failover won't start
>Date: Tue, 04 Sep 2007 13:53:14 +0200
>
>here it is:
>master config:
>failover peer "dhcp-failover" {
>        primary;
>        address 172.24.1.5;
>        port 520;
>        peer address 172.24.1.6;
>        peer port 520;
>        max-response-delay 60;
>        max-unacked-updates 10;
>        mclt 1800;
>        split 128;
>        load balance max seconds 2;
>}
>
>ns1:/opt/dhcpd # /etc/init.d/dhcpd start
>starting dhcp deamon
>Internet Systems Consortium DHCP Server V3.0.5
>Copyright 2004-2006 Internet Systems Consortium.
>All rights reserved.
>For info, please visit http://www.isc.org/sw/dhcp/
>Wrote 0 deleted host decls to leases file.
>Wrote 0 new dynamic host decls to leases file.
>Wrote 0 leases to leases file.
>Listening on DLPI/nge0/00:e0:81:5e:47:c4/172.24.1/24
>Sending on   DLPI/nge0/00:e0:81:5e:47:c4/172.24.1/24
>Sending on   Socket/fallback/fallback-net
>failover peer dhcp-failover: I move from recover to startup
>
>lease-file.db:
>failover peer "dhcp-failover" state {
>  my state recover at 2 2007/09/04 11:44:16;
>  partner state unknown-state at 2 2007/09/04 11:44:16;
>}
>
>
>secondary config:
>failover peer "dhcp-failover" {
>        secondary;
>        address 172.24.1.6;
>        port 520;
>        peer address 172.24.1.5;
>        peer port 520;
>        max-response-delay 60;
>        max-unacked-updates 10;
>        load balance max seconds 2;
>}
>
>starting dhcp deamon
>Internet Systems Consortium DHCP Server V3.1.0
>Copyright 2004-2007 Internet Systems Consortium.
>All rights reserved.
>For info, please visit http://www.isc.org/sw/dhcp/
>Wrote 0 deleted host decls to leases file.
>Wrote 0 new dynamic host decls to leases file.
>Wrote 0 leases to leases file.
>Listening on DLPI/nge0/00:e0:81:71:9b:fe/172.24.1/24
>Sending on   DLPI/nge0/00:e0:81:71:9b:fe/172.24.1/24
>Sending on   Socket/fallback/fallback-net
>failover peer dhcp-failover: I move from recover to startup
>
>lease-file.db:
>failover peer "dhcp-failover" state {
>  my state recover at 2 2007/09/04 11:44:46;
>  partner state unknown-state at 2 2007/09/04 11:44:46;
>  mclt 0;
>}
>
>
>and it's running on solaris 10 X86, I can see some traffic with snoop 
>between the 2 server, but 1 or 2 packet.
>
>thanks for your help,
>
>
>>From: Glenn Satchell <Glenn.Satchell at uniq.com.au>
>>Reply-To: dhcp-users at isc.org
>>To: dhcp-users at isc.org
>>Subject: Re: DHCP failover won't start
>>Date: Tue, 4 Sep 2007 21:38:28 +1000 (EST)
>>
>>
>> >X-Originating-Email: [r_no at hotmail.com]
>> >From: "Arno _" <r_no at hotmail.com>
>> >To: dhcp-users at isc.org
>> >Subject: DHCP failover won't start
>> >Date: Tue, 04 Sep 2007 13:04:46 +0200
>> >
>> >Hello,
>> >I have installed the DHCP 3.1.0 on my solaris box, but the failover won't
>> >start, it always show me:
>> >failover peer "dhcp-failover" state {
>> >my state recover at 2 2007/09/04 10:52:51;
>> >partner state unkown-state at 2 2007/09/04 10:52:51;
>> >}
>> >
>> >same thing on the secondary. and won't change in it's state.
>> >I try to setup the lease-file with something like:
>> >failover peer "dhcp-failover" state {
>> >my state partner-down;
>> >partner state unkown-state at 2 2007/09/04 10:52:51;
>> >}
>> >
>> >like it was explain in the man of the dhcpd.conf, but that won't change
>> >anything.
>> >
>> >What can I do ?
>> >
>> >I know the config is good because I have on other dhcp server, and also I
>> >know I have to setup the lease-file in a certzain way for the first 
>>start,
>> >but can't find a clear way to do it
>> >
>> >thanks for your help.
>>
>>Please post your dhcp configuration, especially the bit where "failover
>>peer" is defined for both servers (as it should be different). Post the
>>startup messages that get wrtten out to the terminal when dhcpd starts
>>on each server. The mailing list software does not accept attachemnts
>>so paste it in the body of the email.
>>
>>The rest here is a guess, but things to check:
>>
>>The time on the two servers is pretty close. Best bet i sto use NTP to
>>synchronise the clocks accurately.
>>
>>That you can ping the other server. If there is a firewall in between
>>check that communication is allowed on the ports specified in the
>>failover peer definition.
>>
>>You do not need to put anything special in dhcpd.leases. In fact for a
>>new server this should be a zero length file. dhcpd will write the
>>status information once it connects to its peer.
>>
>>regards,
>>-glenn
>>
>
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