This article will describe installing isc-dhcp-server and running DHCP server.
Table of Contents
1 Install isc-dhcp-server
Install isc-dhcp-server with apt.
$ sudo apt install -y isc-dhcp-server
2 /etc/default/isc-dhcp-server
Add configuration for DHCPD. INTERFACESv4 is a network interface name which is connected to a network which you try to provided DHCP.
$ INTERFACESv4=eth0
$ sudo sed -e 's/^#DHCPD_CONF=/DHCPD_CONF=/g' \
-e 's/^#DHCPD_PID=/DHCPD_PID=/g' \
-e "s/INTERFACESv4=\"\"/INTERFACESv4=\"${INTERFACESv4}\"/g" \
-i /etc/default/isc-dhcp-server
3 /etc/dhcp/dhcpd.conf
Define domain name, DHCP server IP address and gateway IP address. Mapping MAC address 52:54:00:5e:7a:a4 to IP address 192.168.11.250. Set IP address of this server to DNS server.
$ SERVER_IPADDR=$(hostname -I | awk '{ print $1 }')
$ cat <<EOF | sudo tee /etc/dhcp/dhcpd.conf
subnet 192.168.11.0 netmask 255.255.255.0 {
option domain-name "hiroom2.com";
option domain-name-servers ${BIND_SERVER_IPADDR};
option routers 192.168.11.1;
}
host client {
hardware ethernet 52:54:00:5e:7a:a4;
fixed-address 192.168.11.250;
option host-name "client.hiroom2.com";
}
EOF
4 Run isc-dhcp-server
Run isc-dhpc-server with systemd.
$ sudo systemctl enable isc-dhcp-server $ sudo systemctl restart isc-dhcp-server
5 Execution result
Run the following command on client machine.
IP address is provided.
$ ip a s
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel
state UP group default qlen 1000
link/ether 52:54:00:5e:7a:a4 brd ff:ff:ff:ff:ff:ff
inet 192.168.11.250/24 brd 192.168.11.255 scope global dynamic
noprefixroute eth0
valid_lft 42938sec preferred_lft 42938sec
inet6 fe80::3af3:7f8b:9205:2e03/64 scope link noprefixroute
valid_lft forever preferred_lft forever
Hostname is provided.
$ hostname -f client.hiroom2.com
DNS server is provided.
$ cat /etc/resolv.conf # Generated by NetworkManager search hiroom2.com nameserver 192.168.11.82