dhcpd.conf ‘遇到配置文件錯誤’

我想設置 isc-dhcp-server，但是 dhcp.conf 文件在測試時會產生錯誤dhcpd -t：

...
/etc/dhcp/dhcpd.conf line 6: expecting a parameter or declaration
authoritative;
             ^
Configuration file errors encountered -- exiting
...

cat /etc/dhcp/dhcpd.conf:

# Configuration file for the ISC-DHCP Server 4.3.3
# Default sample file at /etc/dhcp/dhcpd.sample.conf


# global statements:
authoritative;
interface enp30s0;
option routers 192.168.100.1;
option domain-name-servers 192.168.178.1, 192.168.100.1;

subnet 192.168.100.0 netmask 255.255.255.0{
   range 192.168.100.10 192.168.100.110;
   default-lease-time 600;
   max-lease-time 7200;
}

# host declaration
host server {
   hardware ethernet 1c:c1:de:80:76:e8;
   fixed-address 192.168.100.10;
   option host-name "server";
}

host pc {
   hardware ethernet 1C:1B:0D:10:44:71;
   fixed-address 192.168.100.11;
   option host-name "PC";
}

大部分文件都是從文件中複製和粘貼的，所以我不知道問題出在哪裡……

你的問題似乎在於這interface enp30s0;條線。由於您以數字方式引用選項，因此我認為您不需要指定介面。

從dhcpd.conf 手冊頁：

選項路由器 204.254.239.1；

請注意，此處的地址是用數字指定的。這不是必需的 - 如果您的路由器上的每個介面都有不同的域名，那麼使用該介面的域名而不是數字地址是完全合法的。但是，在許多情況下，路由器的所有 IP 地址可能只有一個域名，因此此處不適合使用該名稱。

我用範例文件逐行重新創建您dhcpd.conf的文件，這就是破壞它的原因。

這是我的工作版本：

# cat /usr/share/doc/dhcp*/dhcpd.conf.sample
# dhcpd.conf
#
# Sample configuration file for ISC dhcpd
#

# option definitions common to all supported networks...
option routers 192.168.100.1;
option domain-name-servers 192.168.178.1, 192.168.100.1;

# If this DHCP server is the official DHCP server for the local
# network, the authoritative directive should be uncommented.
authoritative;

# This is a very basic subnet declaration.
subnet 192.168.100.0 netmask 255.255.255.0 {
 range 192.168.100.10 192.168.100.110;
 default-lease-time 600;
 max-lease-time 7200;
}

# Hosts which require special configuration options can be listed in
# host statements.   If no address is specified, the address will be
# allocated dynamically (if possible), but the host-specific information
# will still come from the host declaration.
host server {
 hardware ethernet 1c:c1:de:80:76:e8;
 fixed-address 192.168.100.10;
 option host-name "server";
}

host pc {
   hardware ethernet 1C:1B:0D:10:44:71;
   fixed-address 192.168.100.11;
   option host-name "PC";
}

祝你好運！

引用自：https://serverfault.com/questions/854949