OpenSUSE Leap 42: Install dhcp-server for DHCP server

This article will describe installing dhcp and running DHCP server.

1 Install dhcp-server

Install dhcp-server with zypper.

> sudo zypper -n in dhcp-server
> sudo systemctl enable dhcpd

You must set DHCPD_INTERFACE in /etc/sysconfig/dhcpd. Set interface name which is displayed by /sbin/ifconfig. This article uses "eth0".

> sudo sed -e 's/^DHCPD_INTERFACE=.*/DHCPD_INTERFACE="eth0"/g' \
           -i /etc/sysconfig/dhcpd

2 /etc/dhcpd.conf

Define domain name, DHCP server and gateway. Mapping MAC address 52:54:00:5e:7a:a4 to IP address 192.168.11.254.

> cat <<EOF | sudo tee /etc/dhcpd.conf
subnet 192.168.11.0 netmask 255.255.255.0 {
  option domain-name "hiroom2.com";
  option domain-name-servers 192.168.11.2, 192.168.11.1;
  option routers 192.168.11.1;
}

host opensuse-14-dhcp-client {
  hardware ethernet 52:54:00:5e:7a:a4;
  fixed-address 192.168.11.254;
}
EOF

Restart dhcpd.

> sudo systemctl restart dhcpd

3 Execution result

Checking IP address on client machine.

IP address is provided.

> ip a s
<snip>
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast
state UP group default qlen 1000
    link/ether 52:54:00:5e:7a:a4 brd ff:ff:ff:ff:ff:ff
    inet 192.168.11.254/24 brd 192.168.11.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::5054:ff:fe5e:7aa4/64 scope link
       valid_lft forever preferred_lft forever

DNS information is provided.

> cat /etc/resolv.conf
<snip>
search hiroom2.com
nameserver 192.168.11.2
nameserver 192.168.11.1