我正在关注本指南。我对 Ubuntu 还很陌生，正在使用 14.04 LTS。
当我到达处理 Kerrighed 之前的最后一步（教程进行到一半）时，我尝试启动我的 DHCP 服务器，但失败了。
root@MASTER:~# /etc/init.d/tftpd-hpa restart
root@MASTER:~# /etc/init.d/isc-dhcp-server restart
* Stopping ISC DHCP server dhcpd [fail]
* Starting ISC DHCP server dhcpd * check syslog for diagnostics.
[fail]
root@MASTER:~# /etc/init.d/nfs-kernel-server restart
* Stopping NFS kernel daemon [ OK ]
* Unexporting directories for NFS kernel daemon... [ OK ]
* Exporting directories for NFS kernel daemon... [ OK ]
* Starting NFS kernel daemon [ OK ]
root@MASTER:~#
这是我在 syslog 中输入 dmesg 得到的内容：
[18103.047124] nfsd: last server has exited, flushing export cache
[18104.195774] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[18104.195797] NFSD: starting 90-second grace period (net ffffffff81cda240)
root@MASTER:~#
和系统日志：
Jul 17 17:16:11 MASTER dhcpd: Wrote 0 deleted host decls to leases file.
Jul 17 17:16:11 MASTER dhcpd: Wrote 0 new dynamic host decls to leases file.
Jul 17 17:16:11 MASTER dhcpd: Wrote 0 leases to leases file.
Jul 17 17:16:11 MASTER dhcpd:
Jul 17 17:16:11 MASTER dhcpd: No subnet declaration for eth0 (no IPv4 addresses).
Jul 17 17:16:11 MASTER dhcpd: ** Ignoring requests on eth0. If this is not what
Jul 17 17:16:11 MASTER dhcpd: you want, please write a subnet declaration
Jul 17 17:16:11 MASTER dhcpd: in your dhcpd.conf file for the network segment
Jul 17 17:16:11 MASTER dhcpd: to which interface eth0 is attached. **
Jul 17 17:16:11 MASTER dhcpd:
Jul 17 17:16:11 MASTER dhcpd:
Jul 17 17:16:11 MASTER dhcpd: Not configured to listen on any interfaces!
Jul 17 17:16:17 MASTER rpc.mountd[24387]: Caught signal 15, un-registering and exiting.
Jul 17 17:16:17 MASTER kernel: [22896.481789] nfsd: last server has exited, flushing export cache
Jul 17 17:16:19 MASTER kernel: [22897.636160] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
Jul 17 17:16:19 MASTER kernel: [22897.636192] NFSD: starting 90-second grace period (net ffffffff81cda240)
Jul 17 17:16:19 MASTER rpc.mountd[24820]: Version 1.2.8 starting
这是 /etc/dhcp/dhcp.config：
# General options
option dhcp-max-message-size 2048;
use-host-decl-names on;
deny unknown-clients; # This will stop any non-node machines from appearing on the cluster network.
deny bootp;
# DNS settings
option domain-name "kerrighed"; # Just an example name - call it whatever you want.
option domain-name-servers 192.168.1.1; # The server's IP address, manually configured earlier.
# Information about the network setup
subnet 192.168.1.0 netmask 255.255.255.0 {
option routers 192.168.1.1; # Server IP as above.
option broadcast-address 192.168.1.255; # Broadcast address for your network.
}
# Declaring IP addresses for nodes and PXE info
group {
filename "pxelinux.0"; # PXE bootloader. Path is relative to /var/lib/tftpboot
option root-path "192.168.1.1:/nfsroot/kerrighed"; # Location of the bootable filesystem on NFS server
host M4500_1 {
fixed-address 192.168.1.101; # IP address for the first node, kerrighednode1 for example.
hardware ethernet XX:XX:XX:XX:XX:XX; # MAC address of the node's ethernet adapter
}
server-name "kerrighedserver"; # Name of the server. Call it whatever you like.
next-server 192.168.1.1; # Server IP, as above.
}
（文件中的 MAC 地址是正确的）
这是 etc/network/interfaces ：
# The loopback interface:
auto lo
iface lo inet loopback
#auto eth0
# The primary network interface, manually configured to protect NFS:
iface eth0 inet static
address 192.168.1.1
netmask 255.255.255.0
连接的从属计算机（用于集群）显示PXE-E51 : No DHCP or proxyDHCP offers were received。因此，DHCP 服务器似乎肯定没有运行。当我在终端中重新启动 Tftpd 时，它没有给出任何答案，但 nfs 看起来不错。
答案1
我会检查：
-> /etc/default/isc-dhcp-server 包含 INTERFACES="eth0"？
-> 确保您使用的是 /etc/dhcp3/dhcpd.conf，而不是 /etc/dhcp/dhcp.config（因为您使用的是 isc-dhcp-server）
->将组及其所包含的主机定义到子网{ }声明中