On Wed, Oct 17, 2012 at 5:02 PM, Matthew Burgess < matthew.2.burg...@gmail.com> wrote:
> On Wed, Oct 17, 2012 at 3:49 PM, GordonJB <g.bonth...@gmail.com> wrote: > > So I take it that when the new VM announces itself to the network, it > will > > go off to the DHCP server and pick a static IP if there is one defined > > already for it's MAC address in a config file somewhere? > > Yes, that's correct. You can also set up a generic pool of addresses > that a VM may get one from if you don't know its MAC address, but then > you're not guaranteed to get the same IP address every time. > > The problem I encountered with VMWare VMs was that the MAC address > wasn't generated until the VM was first powered on, so configuring > DHCP ahead of time wasn't possible. As we didn't have any automated > provisioning set up, the process was to do an initial boot and > interrupt the boot process fairly quickly and power the VM off. Then > I'd grab the MAC address from VSphere and pop it into the DHCP > server's config. > just FYI - Foreman creates the vm, then fetch the vm new mac, create a dhcp entry with that mac, and at the end powers on the vm. Ohad > > > Is there a way to have a MAC address/IP pairing generated if one does > not exist? > > I think the approach I'd take with this is to have a fairly small pool > of addresses used for temporary IPs while a box is being provisioned. > Once the box is up, you could have another puppet module that would > figure out, using some other policy (potentially as simple as doing a > DNS lookup on your VM's hostname), what the IP address of the box > should be, find the MAC address of the NIC (exposed by facter), then > put that in to the DHCP server's config. Automated provisioning > solutions such as Foreman or Razor > (http://puppetlabs.com/blog/puppet-razor-module/) may have > better/other ways of doing it, but that would be my initial approach. > That Razor page also links to Puppetlabs' own DHCP module > (https://github.com/puppetlabs/puppetlabs-dhcp), so I'd be prone to > try that for your DHCP config needs first, before looking at modules > on the Forge. > > Regards, > > Matt. > > -- > You received this message because you are subscribed to the Google Groups > "Puppet Users" group. > To post to this group, send email to puppet-users@googlegroups.com. > To unsubscribe from this group, send email to > puppet-users+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/puppet-users?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Puppet Users" group. To post to this group, send email to puppet-users@googlegroups.com. To unsubscribe from this group, send email to puppet-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/puppet-users?hl=en.
