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I'm trying to switch the order of DNS servers that my clients machines use by editing the /etc/dhcp/dhcpd.conf file in cobbler. This was the settings before I attempted the change:

subnet 10.100.48.0 netmask 255.255.252.0 { option routers 10.100.48.53; option domain-name-servers 10.100.48.51, 10.100.51.205; option subnet-mask 255.255.252.0;

This is how I am updating the file (i.e. the DNS servers are switched around):

subnet 10.100.48.0 netmask 255.255.252.0 { option routers 10.100.48.53; option domain-name-servers 10.100.51.205, 10.100.48.51; option subnet-mask 255.255.252.0;

The problem is, whenever I run cobbler sync the /etc/dhcp/dhcpd.conf file reverts to the original state. How can I ensure this does not happen?

Thanks

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I've worked out how to resolve the issue for anyone who might come across this question. I needed to update this file:

/etc/cobbler/dhcp.template

When you run cobbler sync, the dhcpd.conf file is generated from the info in the dhcp.template file. once I had updated this file everything worked as expected.

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