Unable to provision using multiple subnets fails with NoDHCP Errors On Red Hat Satellite

Environment

• Red Hat Satellite 6.5 and above

Issue

• Trying to provision system using Red Hat Satellite 6 using multiple subnets, hence facing issue even after modifying dhcpd.conf.
• Unable to provision with multiple subnets fails with error PXE-E51: No DHCP or proxy DHCP offers were received.

Resolution

• Move the file cache from in /etc/dhcp/ to /tmp

    # mv dhcpd.conf.xxxx /tmp 
  

• After moving the files restart the DHCP services on the satellite server.

    # systemctl restart DHCP
  

• PXE provisioning with multiple subnets can be achieved by manually editing the /etc/dhcp/dhcpd.conf file.

For more KB articles/solutions related to Red Hat Satellite 6.x Provisioning Issues, please refer to the Consolidated Troubleshooting Article for Red Hat Satellite 6.x Provisioning related Issues

Root Cause

• Since the old configuration files were present in /etc/dhcp/ it will be picked up first and then will provision based on the configuration.

Diagnostic Steps

• Check in the location /etc/dhcp/ for any old configuration files and move it to /tmp.

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