作者：Liping Mao 发表于：2014-09-05
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最近同事在用icehouse版本nova的baremetal driver在CentOS6.3上遇到了一些坑。之前对这块没什么了解，简单记录如下：
1. 启动时发现Bad or missing multicast discovery address:
调试发现dhcp server在回包时没有包含TFTP Server的地址，最终发现是dnsmasq的版本过低造成的。升级到2.66就解决了。
2. "Unable to locate configuration file"
最后定位发现是在CentOS6.3上tftp配置的不对：
[[email protected] tftpboot]#
pwd
/tftpboot
[[email protected] tftpboot]#
ll
total 40
-rw-r--r-- 1 nova nova 23 Sep 5 01:07 map-file
-rw-r--r-- 1 nova nova 26595 Sep 5 01:10 pxelinux.0
drwxr-xr-x 2 nova nova 4096 Sep 5 01:35 pxelinux.cfg
[[email protected] tftpboot]# cat map-file
r ^([^/]) /tftpboot/\1
[[email protected] tftpboot]# cat /etc/xinetd.d/tftp
# default: off
# description: The tftp server serves files using the trivial file transfer \
# protocol. The tftp protocol is often used to boot diskless \
# workstations, download configuration files to network-aware printers, \
# and to start the installation process for some operating systems.
service tftp
{
socket_type = dgram
protocol = udp
wait = yes
user = root
server = /usr/sbin/in.tftpd
server_args = --map-file /tftpboot/map-file /tftpboot
disable = no
per_source = 11
cps = 100 2
flags = IPv4
}