[Bug 1069570] Re: 1 MAC Address, two IPs - DNS is "out of sync" with DHCP leases databases, I think...

Robert Ayres robert.ayres at canonical.com
Tue Mar 5 15:37:46 UTC 2013


** Attachment added: "dhcpd leases file"
   https://bugs.launchpad.net/maas/+bug/1069570/+attachment/3558514/+files/dhcpd.leases

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https://bugs.launchpad.net/bugs/1069570

Title:
  1 MAC Address, two IPs - DNS is "out of sync" with DHCP leases
  databases, I think...

Status in juju-core:
  New
Status in MAAS:
  Triaged
Status in “isc-dhcp” package in Ubuntu:
  Confirmed
Status in “maas” package in Ubuntu:
  Incomplete

Bug description:
  Guys,

   During my new tests, I tried to create two nodes simultaneously (both
  via DHCP + PXE, not by clicking "+Add node") and I hit this problem:

   Same MAC Address, two different IPs:

   http://pastebin.com/8RYjGe5D

   The brief is:

   1- DHCP gives address 192.168.50.1 to my machine on its first boot;

   2- After some time, I think that after some "reboots / elist /
  don'know for sure or even after commissioning" it; the IP have changed
  to 192.168.50.2 and got registered at DNS (192-168-50-2.test.com) that
  way;

   3- In the end of the day, after allocate it to root and start using
  it (the nodes), the DHCP gives again the IP 192.168.50.1 to my node,
  but DNS still remains with 192.158.50.2...

   ---

   My second node, first starts with 192.168.50.3, got registered with
  192.168.50.4 at DNS (and at MaaS Web GUI) but the DHCP finish with
  192.168.50.3...

   I'll not try maas-dns again... Too many bugs...   =(

   I think that MaaS needs some kind of "glue" between DHCP and DNS to
  keep it in sync.

  Tks!
  Thiago

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