17.7. Optional: Configuring the network and host name

Procedure

1. From the Installation Summary window, click Network and Host Name.
2. From the list in the left-hand pane, select an interface. The details are displayed in the right-hand pane.

3. Toggle the ON/OFF switch to enable or disable the selected interface.

   You cannot add or remove interfaces manually.

4. Click + to add a virtual network interface, which can be either: Bond, Bridge, or VLAN.
5. Click - to remove a virtual interface.
6. Click Configure to change settings such as IP addresses, DNS servers, or routing configuration for an existing interface (both virtual and physical).

7. Type a host name for your system in the Host Name field.

   The host name can either be a fully qualified domain name (FQDN) in the format hostname.domainname, or a short hostname without the domain. Many networks have a Dynamic Host Configuration Protocol (DHCP) service that automatically supplies connected systems with a domain name. To allow the DHCP service to assign the domain name to this system, specify only the short host name.

   Host names can only contain alphanumeric characters and - or .. Host name should be equal to or less than 64 characters. Host names cannot start or end with - and .. To be compliant with DNS, each part of a FQDN should be equal to or less than 63 characters and the FQDN total length, including dots, should not exceed 255 characters.

   The value localhost means that no specific static host name for the target system is configured, and the actual host name of the installed system is configured during the processing of the network configuration, for example, by NetworkManager using DHCP or DNS.

   When using static IP and host name configuration, it depends on the planned system use case whether to use a short name or FQDN. Red Hat Identity Management configures FQDN during provisioning but some 3rd party software products may require a short name. In either case, to ensure availability of both forms in all situations, add an entry for the host in /etc/hosts in the format IP FQDN short-alias.

8. Click Apply to apply the host name to the installer environment.
9. Alternatively, in the Network and Hostname window, you can choose the Wireless option. Click Select network in the right-hand pane to select your wifi connection, enter the password if required, and click Connect.

Procedure

1. From the Network & Host name window, click the + button to add a virtual network interface. The Add a device dialog opens.

2. Select one of the four available types of virtual interfaces:

   • Bond: NIC (Network Interface Controller) Bonding, a method to bind multiple physical network interfaces together into a single bonded channel.
   • Bridge: Represents NIC Bridging, a method to connect multiple separate networks into one aggregate network.
   • Vlan (Virtual LAN): A method to create multiple distinct broadcast domains which are mutually isolated.
3. Select the interface type and click Add. An editing interface dialog box opens, allowing you to edit any available settings for your chosen interface type. For more information, see Editing network interface.
4. Click Save to confirm the virtual interface settings and return to the Network & Host name window.
5. Optional: To change the settings of a virtual interface, select the interface and click Configure.

Procedure

1. Click the General tab.
2. Select the Connect automatically with priority check box to enable connection by default. Keep the default priority setting at 0.

3. Optional: Enable or disable all users on the system from connecting to this network by using the All users may connect to this network option. If you disable this option, only root will be able to connect to this network.

   重要

   When enabled on a wired connection, the system automatically connects during startup or reboot. On a wireless connection, the interface attempts to connect to any known wireless networks in range. For further information about NetworkManager, including the nm-connection-editor tool, see the Configuring and managing networking document.

4. Click Save to apply the changes and return to the Network and Host name window.

   It is not possible to only allow a specific user other than root to use this interface, as no other users are created at this point during the installation. If you need a connection for a different user, you must configure it after the installation.

Procedure

1. To set static network configuration, navigate to one of the IPv Settings tabs and from the Method drop-down menu, select a method other than Automatic, for example, Manual. The Addresses pane is enabled.
2. Optional: In the IPv6 Settings tab, you can also set the method to Ignore to disable IPv6 on this interface.
3. Click Add and enter your address settings.
4. Type the IP addresses in the Additional DNS servers field; it accepts one or more IP addresses of DNS servers, for example, 10.0.0.1,10.0.0.8.

5. Select the Require IPvX addressing for this connection to complete check box.

   Selecting this option in the IPv4 Settings or IPv6 Settings tabs allow this connection only if IPv4 or IPv6 was successful. If this option remains disabled for both IPv4 and IPv6, the interface is able to connect if configuration succeeds on either IP protocol.

6. Click Save to apply the changes and return to the Network & Host name window.

Procedure

1. In the IPv4 Settings and IPv6 Settings tabs, click Routes to configure routing settings for a specific IP protocol on an interface. An editing routes dialog specific to the interface opens.
2. Click Add to add a route.
3. Select the Ignore automatically obtained routes check box to configure at least one static route and to disable all routes not specifically configured.

4. Select the Use this connection only for resources on its network check box to prevent the connection from becoming the default route.

   This option can be selected even if you did not configure any static routes. This route is used only to access certain resources, such as intranet pages that require a local or VPN connection. Another (default) route is used for publicly available resources. Unlike the additional routes configured, this setting is transferred to the installed system. This option is useful only when you configure more than one interface.

5. Click OK to save your settings and return to the editing routes dialog that is specific to the interface.
6. Click Save to apply the settings and return to the Network and Host Name window.