FAQs for node detection

Restrictions and guidelines

Figure-1 PXE Only parameter

 

Figure-2 Editing BIOS settings

 

Figure-3 Setup page

 

DHCP address obtaining failure

  1. Execute the following commands to view address obtaining information.

Figure-4 View address obtaining information

 

  1. Execute the following command to check whether the compute node has received DHCP packets:

tcpdump -i ens192 -A 'udp and port 67 and port 68' -w /root/test.pcap

ens192 represents the NIC name, and test.pcap represents the DHCP packet file name.

  1. Use the ethereal or Wireshark software to open the test.pcap file to check whether the PXE NIC of the server has sent DHCP packets.

  1. If the DHCP service is running correctly, but the compute node does not receive the packets sent by the server's NIC, verify the network configuration.

The system prompts "No DHCP or proxyDHCP offers were received" during deployment

This issue is caused by insufficient IP addresses in the DHCP address pool. To resolve the issue:

  1. Edit the value of the dhcp_range parameter in the /etc/ironic-inspector/dnsmasq.conf configuration file.

  1. Execute the following command to restart the openstack-ironic-inspector-dnsmasq.service service:

systemctl restart openstack-ironic-inspector-dnsmasq.service

Disk data error occurred after node detection succeeded

Whether hardware information can be obtained correctly depends on the kernel driver of the small image. The obtained data might be incorrect if the RAID driver version in the small image does not support the hardware. In this scenario, re-create a small image that supports the RAID hardware.