在CentOS上，我们在eth0上configuration了几个虚拟接口，而且他们偶尔会看起来很沮丧。 现在看完日志文件后，我发现显然ntpd删除了所有的eth0接口，并且dhclient自动将eth0备份。 但是，虚拟接口停滞不前，导致我们的几个网站无法访问。
有人可以向我解释为什么ntpd删除接口？ 可以/应该closures，还是/我应该configurationdhclient使虚拟接口自动备份？
编辑//我应该发布的日志文件：
Nov 12 13:10:28 raptor dhclient[20048]: DHCPREQUEST on eth0 to 255.255.255.255 port 67 (xid=0x6a825e97) Nov 12 13:10:42 raptor dhclient[20048]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0x24554092) Nov 12 13:10:42 raptor dhclient[20048]: DHCPOFFER from 96.126.108.78 Nov 12 13:10:42 raptor dhclient[20048]: DHCPREQUEST on eth0 to 255.255.255.255 port 67 (xid=0x24554092) Nov 12 13:10:42 raptor dhclient[20048]: DHCPACK from 96.126.108.78 (xid=0x24554092) Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #31 eth0, 50.116.50.97#123, interface stats: received=3255, sent=3256, dropped=0, active_time=1559394 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #32 eth0:0, 50.116.53.56#123, interface stats: received=3, sent=0, dropped=0, active_time=1559391 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #33 eth0:1, 66.175.211.192#123, interface stats: received=2, sent=0, dropped=0, active_time=1559389 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #34 eth0:2, 50.116.53.95#123, interface stats: received=3, sent=0, dropped=0, active_time=1559387 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #35 eth0:3, 97.107.132.32#123, interface stats: received=2, sent=0, dropped=0, active_time=1559385 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #36 eth0:4, 50.116.56.201#123, interface stats: received=2, sent=0, dropped=0, active_time=1559383 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #37 eth0:5, 66.175.212.121#123, interface stats: received=2, sent=0, dropped=0, active_time=1559381 secs Nov 12 13:10:42 raptor ntpd[2109]: Deleting interface #38 eth0:6, 66.175.215.137#123, interface stats: received=2, sent=0, dropped=0, active_time=1559379 secs Nov 12 13:10:44 raptor NET[1573]: /sbin/dhclient-script : updated /etc/resolv.conf Nov 12 13:10:44 raptor dhclient[20048]: bound to 50.116.50.97 -- renewal in 32692 seconds. Nov 12 13:10:45 raptor ntpd[2109]: Listening on interface #39 eth0, 50.116.50.97#123 Enabled eth0configuration：
DEVICE="eth0" ONBOOT="yes" BOOTPROTO="dhcp" IPV6INIT="no" IPADDR=50.116.50.97 NETMASK=255.255.255.0 GATEWAY=50.116.50.1
和虚拟接口（我只发布了第一个，他们看起来大部分相同）：
# Configuration for eth0:0 DEVICE=eth0:0 BOOTPROTO=none # This line ensures that the interface will be brought up during boot. ONBOOT=yes # eth0:0 IPADDR=50.116.53.56 NETMASK=255.255.255.0
BOOTPROTO="dhcp"意味着你有DHCP。
如果你看，DHCP客户端正在ntp改变任何东西之前立即运行。 我认为你的DHCP客户端正在删除eth0上的所有静态地址。 当NTP注意到这一点时，它知道它需要停止监听静态地址所监听的所有套接字。
问题
ntpd正在删除接口
Nov 9 01:10:09 localhost ntpd[27847]: Deleting interface #16 ethX, xxxx#123, interface stats: received=0, sent=0, dropped=0, active_time=522 secs Nov 9 01:10:09 localhost ntpd[27847]: Deleting interface #17 ethX, xxxx#123, interface stats: received=0, sent=0, dropped=0, active_time=522 secs
parsing度
使用-L选项告诉ntpd不要在虚拟接口上侦听。 您可以在/etc/sysconfig/ntpd设置-L。
当接口closures或移除时，ntpd根据当前的接口状态更新监听接口。
来源： https ： //access.redhat.com/solutions/261123