Perl based Guest Customization fails to set DNS settings with DHCP IP address on Debian 13

Products

• VMware vCenter Server

Issue/Introduction

The /etc/resolv.conf file is overwritten by dhcpcd after reboot on Debian 13.

Environment

VMware vCenter Server 9.0

Cause

dhcpcd has a hook script which will overwrite the /etc/resolv.conf after the guest reboots post-customization.

Resolution

To work around this issue, perform the following steps:

1 - Using a text editor such as vi, open the following file:

/etc/dhcpcd.conf

2 - Add the following line to the file:

nohook resolv.conf

3 - Save and close the file.

This setting will prevent the overwrite of the /etc/resolv.conf file when an OS customization has DNS settings.