This article is going to take you through on how to Install DHCP Server on Rocky Linux. The DHCP Server is a network server that distributes IP addresses, default gateways, and other network information to client devices automatically. The Dynamic Host Configuration Protocol is used by the DHCP server to respond to broadcast queries from clients.
How to Install DHCP Server on Rocky Linux
Install DHCP Server on Rocky Linux
- Update your packages.
sudo dnf update- Then run the command below to install DHCP Server.
sudo dnf install dhcp-serverSample output
Last metadata expiration check: 0:05:54 ago on Fri 22 Apr 2022 06:20:22 PM EAT. Dependencies resolved. ================================================================= Package Arch Version Repo Size ================================================================= Installing: dhcp-server x86_64 12:4.3.6-45.el8 baseos 529 k Installing dependencies: bind-export-libs x86_64 32:9.11.26-6.el8 baseos 1.1 M dhcp-common noarch 12:4.3.6-45.el8 baseos 206 k dhcp-libs x86_64 12:4.3.6-45.el8 baseos 147 k Transaction Summary ================================================================= Install 4 Packages Total download size: 2.0 M Installed size: 4.6 M Is this ok [y/N]: y Downloading Packages: (1/4): dhcp-libs-4.3.6-45.el8.x8 91 kB/s | 147 kB 00:01 (2/4): dhcp-common-4.3.6-45.el8. 121 kB/s | 206 kB 00:01 (3/4): dhcp-server-4.3.6-45.el8. 428 kB/s | 529 kB 00:01 (4/4): bind-export-libs-9.11.26- 249 kB/s | 1.1 MB 00:04 ----------------------------------------------------------------- Total 364 kB/s | 2.0 MB 00:05 Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : dhcp-libs-12:4.3.6-45.el8.x86_64 1/4 Installing : dhcp-common-12:4.3.6-45.el8.noarch 2/4 Installing : bind-export-libs-32:9.11.26-6.el8.x86 3/4 Running scriptlet: bind-export-libs-32:9.11.26-6.el8.x86 3/4 Running scriptlet: dhcp-server-12:4.3.6-45.el8.x86_64 4/4 Installing : dhcp-server-12:4.3.6-45.el8.x86_64 4/4 Running scriptlet: dhcp-server-12:4.3.6-45.el8.x86_64 4/4 Verifying : bind-export-libs-32:9.11.26-6.el8.x86 1/4 Verifying : dhcp-common-12:4.3.6-45.el8.noarch 2/4 Verifying : dhcp-libs-12:4.3.6-45.el8.x86_64 3/4 Verifying : dhcp-server-12:4.3.6-45.el8.x86_64 4/4 Installed: bind-export-libs-32:9.11.26-6.el8.x86_64 dhcp-common-12:4.3.6-45.el8.noarch dhcp-libs-12:4.3.6-45.el8.x86_64 dhcp-server-12:4.3.6-45.el8.x86_64 Complete!
Configure DHCP Server on Rocky Linux
- After the installation DHCP server will create an empty configuration file called
/etc/dhcp/dhcpd.conf. - A sample file is located in
/usr/share/doc/dhcp-server/dhcpd.conf.example. - Before you can proceed, check the network for the interface that you want to use for DHCP server.
ip aSample output
1: lo: 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: ens160: mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 00:0c:29:8a:47:48 brd ff:ff:ff:ff:ff:ff
inet 192.168.171.128/24 brd 192.168.171.255 scope global dynamic noprefixroute ens160
valid_lft 965sec preferred_lft 965sec
inet6 fe80::20c:29ff:fe8a:4748/64 scope link noprefixroute
valid_lft forever preferred_lft forever
3: virbr0: mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether 52:54:00:3b:56:a3 brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
valid_lft forever preferred_lft forever
4: virbr0-nic: mtu 1500 qdisc fq_codel master virbr0 state DOWN group default qlen 1000
link/ether 52:54:00:3b:56:a3 brd ff:ff:ff:ff:ff:ff
From the sample output above, we will use ens160 interface for our DHCP server.
- Next, create the config file using the command below.
sudo nano /etc/dhcp/dhcpd.confThen set configuration according to your network as shown in the example below.
option domain-name "itnixpro.com";
option domain-name-servers ns1.itnixpro.com;
default-lease-time 3600;
max-lease-time 43200;
authoritative;
subnet 192.168.171.0 netmask 255.255.255.0 {
range 192.168.171.150 192.168.171.254;
option domain-name-servers 192.168.171.1, 8.8.8.8;
option domain-name "itnixpro.com";
option routers 192.168.171.1;
}
- Read more on the sample configuration file.
- Save and exit the configuration file.
- Next, allow DHCP server on firewall.
firewall-cmd --add-port=67/udp --permanent
firewall-cmd --reload- Start DHCP server.
sudo systemctl start dhcpd- Enable DHCP server to start on system boot.
sudo systemctl enable dhcpd- If your configuration is ok, DHCP server should be running. Check status using the command below.
sudo systemctl status dhcpdSample output
● dhcpd.service - DHCPv4 Server Daemon
Loaded: loaded (/usr/lib/systemd/system/dhcpd.service; enabled; vendor preset: disabled)
Active: active (running) since Fri 2022-04-22 22:25:04 EAT; 34s ago
Docs: man:dhcpd(8)
man:dhcpd.conf(5)
Main PID: 4039 (dhcpd)
Status: "Dispatching packets..."
Tasks: 1 (limit: 23385)
Memory: 8.7M
CGroup: /system.slice/dhcpd.service
└─4039 /usr/sbin/dhcpd -f -cf /etc/dhcp/dhcpd.conf -user dhcpd -group dhcpd --no-pid
Apr 22 22:25:04 localhost.localdomain dhcpd[4039]: ** Ignoring requests on virbr0. If this is not what
Apr 22 22:25:04 localhost.localdomain dhcpd[4039]: you want, please write a subnet declaration
Apr 22 22:25:04 localhost.localdomain dhcpd[4039]: in your dhcpd.conf file for the network segment
Apr 22 22:25:04 localhost.localdomain dhcpd[4039]: to which interface virbr0 is attached. **
Apr 22 22:25:04 localhost.localdomain dhcpd[4039]:
Apr 22 22:25:04 localhost.localdomain dhcpd[4039]: Listening on LPF/ens160/00:0c:29:8a:47:48/192.168.171.0/24
Apr 22 22:25:04 localhost.localdomain dhcpd[4039]: Sending on LPF/ens160/00:0c:29:8a:47:48/192.168.171.0/24
Apr 22 22:25:04 localhost.localdomain dhcpd[4039]: Sending on Socket/fallback/fallback-net
Apr 22 22:25:04 localhost.localdomain dhcpd[4039]: Server starting service.
Apr 22 22:25:04 localhost.localdomain systemd[1]: Started DHCPv4 Server Daemon.
- You have made it to the end of our article. Cheers! You have learned how to Install DHCP Server on Rocky Linux.
Read more about DHCP
See how configure DHCP client on Ubuntu systems;
Install and Configure DHCP client on Rocky Linux
How to Configure DHCP Client on Ubuntu
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