On Sat, Nov 06, 2010 at 03:56:52AM -0700, Frank wrote:
(1) To summarize the p r o b l e m -- the server were a new OS
should be installed does not communicate with the Cobbler server:
"PXE-E51: No DHCP or proxyDHCP offers were received"
You want do debug the dhcp-service here, which can be a part of
cobbler-deployments.
- so make sure dhcpd is running
- listening on the right networkinterface
- maybe you want to sniff directly on your network-interface
if you see the dhcp-request from the new server in the first place
(3) The server/s where I try to reinstall the OS (CentOS) have all
still a working install of CentOS. I now wonder if the disabling of
certain services that CSF firewall security check tool suggested
(when we were using these servers) has something to do with that. FOR
EXAMPLE, we disabled the "anacron" and "cups" service and others.
Sorry about my naivety -- these are only running AFTER the OS already
started, or is there any sort of pre-run start of services that I may
have disabled that Cobbler requires?
If you run firewalls on the cobbler-server on on network-components
between cobbler-server and to-be-installed server then you have
to make sure the required communication is allowed.
For your situation dhcp isnt working.
Another way is to setup something without possible firewall in bet-
ween, i.e.
- using a laptop as cobbler-server, and crossover-cable to the to-be-
installed-server (and not running a firewall locally on cobbler-serv.)
- or setting up a virtual machine as cobbler-server and trying to
install another virtual machine directly in same virtual network
Christian