On Oct 6, 2010, at 7:21 AM, Brandl, Tobias wrote: > > I'm struggling for a couple of days now with the DHCP setup in my sample > network environment. Here's what I'm trying to do: > * I'm setting up an environment where severs should get their IPs via > DHCP name -> IP mapping (fixed or static IP) > * Each server has two NICs, one used in a client LAN (192.168.1.0/24) > and one in a backend LAN (storage access, etc. - 192.168.101.0/24) > * Each server should get IPs for the different subnets based on the > hostname provided, e.g. > ** requesting an IP for server01(.clnt.localnet) via the client LAN > should be mapped to 192.168.1.10 > ** requesting an IP for server01(.bknd.localnet) via the backend LAN > should be mapped to 192.168.101.10 > > I think I've tried almost every combination of dhcp-host, dhcp-range, > dhcp-fqdn, and /etc/hosts entries without any success. > I'm either getting "no address available" once the second interface > comes up or it receives an IP different from the one set in /etc/hosts - > even though dnsmasq logs show that the name is "known" (matching > dhcp-host entry found). > > Could anyone please help to sort this out?
I fought with this for a long time myself, as I really wanted to be able to do it with the mappings appearing only in /etc/hosts. I was never able to get that to work, though, and I finally gave up and ended up getting it to work with a couple of explicit dhcp-host lists in dnsmasq.conf. My config looks something like: # global settings bogus-priv dhcp-authoritative dhcp-fqdn dhcp-leasefile=/tmp/dhcp.leases domain-needed expand-hosts localise-queries # read static host mappings out of ethers file read-ethers # timeheart.net is the public subnet, and internal.timeheart.net is a private one (and the default) domain=timeheart.net,74.93.13.192/29 domain=internal.timeheart.net # host assignments for quad, since /etc/hosts doesn't work when multi-homed dhcp-host=74.93.13.193,quad.timeheart.net dhcp-host=192.168.1.2,quad.internal.timeheart.net All other IP addresses are assigned via entries in /etc/hosts. -- Ron Frederick r...@timeheart.net
