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Today's Topics:

   1. Failover | How sync fixed-addresses definition between master
      and slave (Anton Shevtsov)


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

Message: 1
Date: Thu, 21 Nov 2024 10:45:21 +0500
From: Anton Shevtsov <shevtso...@basealt.ru>
To: dhcp-users@lists.isc.org
Subject: Failover | How sync fixed-addresses definition between master
        and slave
Message-ID: <0eb07392-f064-420a-bd04-feb88d859...@basealt.ru>
Content-Type: text/plain; charset="utf-8"; Format="flowed"

Hi,

I make failover confuguration, all work fine. But i have one question - 
how sync fixed-addresses definition between master and slave?

My /etc/dhcp/dhcpd.conf from 'primary' node. Static addresses i moved to 
static.conf.

Should I copy manually to 'slave' node (after each change to this file, 
and restart/reload dhcpd service) or are anybody have a best practices?

#primary
authoritative;
update-static-leases on;
one-lease-per-client on;
omapi-port 7911;
omapi-key omapi_key;

failover peer "partner" {
                primary;
                address 172.23.116.20;
                port 519;
                peer address 172.23.116.21;
                peer port 520;
                max-response-delay 60;
                max-unacked-updates 10;
                mclt 3600;
                split 128;
                load balance max seconds 3;
}

key "omapi_key" {
        algorithm hmac-md5;
        secret "--mysecrethere--";
};

subnet 172.23.116.0 netmask 255.255.255.0 {
        option routers                  172.23.116.1;
        option subnet-mask              255.255.255.0;
        option nis-domain               "domen.loc";
        option domain-name              "domen.loc";
        option domain-name-servers      172.23.116.20, 172.23.116.21;
        option ntp-servers      172.23.116.20, 172.23.116.21;

        default-lease-time 21600;
        max-lease-time 43200;
        pool {
                failover peer "partner";
                range 172.23.116.30 172.23.116.250;
                include "/etc/dhcp/static.conf";

        }
}

[root@ns1 dhcp]# cat static.conf
host srv1 {
        hardware ethernet 00:50:56:bb:6f:02;
        fixed-address 172.23.116.23;
}

host win10 {
        hardware ethernet 00:50:56:bb:db:87;
        fixed-address 172.23.116.142;
}



--
Anton
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