eth0
, antarmuka internal saya, memiliki alamat statis 10.0.0.1
. Saya juga memiliki antarmuka p4p1
,, bertindak sebagai antarmuka eksternal saya. Jika itu penting, antarmuka eksternal saya tidak terhubung secara fisik dan iptables
tidak aktif / masih sedang ditulis.
/etc/sysconfig/dhcpd
:
DHCPDARGS=eth0
subnet klausa dari /etc/dhcpd.conf
:
subnet 10.0.0.0 netmask 255.255.255.0 {
option routers 10.0.0.1;
option domain-name-servers 10.0.0.1;
option ntp-servers 10.0.0.1;
default-lease-time 86400; # 1 day
max-lease-time 604800; # 7 days
use-host-decl-names on;
ddns-updates on;
use-host-decl-names on;
allow unknown-clients;
ignore client-updates;
option domain-name "localdomain";
ddns-domainname "localdomain";
next-server 10.0.0.1;
filename "pxelinux.0";
group # known hosts
{
host host1.localdomain {hardware ethernet [REDACTED]; fixed-address host1.localdomain;}
host host2.localdomain {hardware ethernet [REDACTED]; fixed-address host2.localdomain;}
{
pool
{
one-lease-per-client true;
ping-check true;
range 10.0.0.51 10.0.0.60;
}
}
Jadi, mengapa saya masih mendapatkan pesan kesalahan "Tidak ada pernyataan subnet" saat peluncuran?
No subnet declaration for eth0 (10.0.0.1).
** Ignoring requests on eth0. If this is not what
you want, please write a subnet declaration
in your dhcpd.conf file for the network segment
to which interface eth0 is attached. **
UPDATE 4/1 1900h
Sebelum eksperimen malam ini:
[root@father ~]# ip addr show dev eth0
3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 90:e2:ba:2d:92:4d brd ff:ff:ff:ff:ff:ff
inet 10.0.0.1/24 brd 10.0.0.255 scope global eth0
inet6 fe80::92e2:baff:fe2d:924d/64 scope link
valid_lft forever preferred_lft forever
Saya mengganti alamat IP jaringan internal saya 192.168.100.0/24
dengan mencocokkan perubahan /etc/dhcpd.conf
tanpa perubahan perilaku.
[root@father ~]# ip addr show dev eth0
3: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 90:e2:ba:2d:92:4d brd ff:ff:ff:ff:ff:ff
inet 192.168.100.1/24 brd 192.168.100.255 scope global eth0
inet6 fe80::92e2:baff:fe2d:924d/64 scope link
valid_lft forever preferred_lft forever
[root@father ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.100.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 p4p1
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 p4p1
169.254.0.0 0.0.0.0 255.255.0.0 U 1003 0 0 eth0
Oh, hei! Tidak ada gerbang di sana! Itu mudah diperbaiki dengan GATEWAY=192.168.0.1
in ifcfg-eth0
dan ifcfg-p4p1
file. service network restart
dan...
[root@father ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.100.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 p4p1
169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 p4p1
169.254.0.0 0.0.0.0 255.255.0.0 U 1003 0 0 eth0
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 p4p1
Jadi, saya punya gateway, tetapi service dhcpd start
gagal dengan kesalahan yang sama.
Catatan lain:
p4p1
tidak terhubung secara fisik.service dhcpd configtest
kataSyntax: OK
. Jadi, ini hampir pasti bukan penyangga yang salah tempat.
systemd
: Anda dapat membuat salinan/lib/systemd/system/dhcpd.service
ke/etc/systemd/system/
dan menentukan antarmuka di baris Exec :ExecStart=/usr/sbin/dhcpd -f -cf /etc/dhcp/dhcpd.conf -user dhcpd -group dhcpd --no-pid eth0