peer holds all free leases - ISC DHCPd 4.3.1

Prabir Kr Sarkar prabir.kr.sarkar at gmail.com
Tue Mar 29 14:37:28 UTC 2016


Hi,
   We are running DHCP Server, ISC DHCPd version in a cluster mode. 4.3.1. For
a few days now we are getting the following. Can this possibly be due to a
failure in syncing of the lease pool information between the DHCP cluster
nodes? If so, what is the workaround?

Note: I have masked the IP, MAC, port, FQDN information for privacy/security
reasons.

*Excerpts from "/etc/opt/csw/dhcpd.conf"*

*Cluster node config details >*

failover peer "failover" {

  secondary;
  address 15x.xxx.xxx.5;
  port x47;
  peer address 15x.xxx.xxx.6;
  peer port x47;
  max-response-delay 60;
  max-unacked-updates 10;
  load balance max seconds 3;
  mclt 3600;
#  split 128;
}


*Relevant portion of the subnet's lease >*

subnet 10.xxx.24.0 netmask 255.255.254.0 {
        ddns-updates on;
        pool {
                range 10.xxx.24.101 10.xxx.25.254;
                failover peer "failover";
                }
        option routers 10.xxx.24.1;
        option domain-name-servers xxx.xxx.xxx.xxx;
        option domain-name "dhcp.xxx.xxx.com";
        option ntp-servers 157.xxx.xxx.5 , 157.xxx.xxx.6;
        option netbios-name-servers 157.xxx.xxx.xx;
        }


Mar 29 18:20:14 dns1.xxx.xxx.com dhcpd: [ID 702911 local1.error]
DHCPDISCOVER from 5c:xx:xx:xx:7c:72 via 10.xxx.24.3: *peer holds all free
leases*

Mar 29 18:20:14 dns1.xxx.xxx.com dhcpd: [ID 702911 local1.error]
DHCPDISCOVER from 5c:xx:xx:xx:7c:72 via 10.xxx.24.2: *peer holds all free
leases*


Mar 29 18:20:14 dns2.xxx.xxx.com dhcpd: [ID 702911 local1.error]
DHCPDISCOVER from  5c:xx:xx:xx:7c:72 via 10.xxx.24.2: *peer holds all free
leases*

Mar 29 18:20:14 dns2.xxx.xxx.com dhcpd: [ID 702911 local1.error]
DHCPDISCOVER from 5c:xx:xx:xx:7c:72 via 10.xxx.24.3:* peer holds all free
leases*


-- 
*Thanks and Regards*
*Prabir Sarkar*
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