This site uses Akismet to reduce spam. Learn how your comment data is processed. Refresh CentOS 8 Packages 2. List available environment groups 3. Set system to Graphical mode 5. Finally, Reboot to access GUI 6. Configuration of other types of networks is broadly similar, although the specific configuration parameters might be different.
To configure a network connection manually, select the interface from the Network and Host name window and click Configure. The options present depend on the connection type - the available options are slightly different depending on whether the connection type is a physical interface wired or wireless network interface controller or a virtual interface Bond, Bridge, Team, or Vlan that was previously configured in Adding a virtual network interface.
The following sections contain information about the three most common and useful options in the editing dialog:. Select the Automatically connect to this network when it is available check box to enable connection by default. When enabled on a wired connection, the system typically connects during startup unless you unplug the network cable.
On a wireless connection, the interface attempts to connect to any known wireless networks in range. You can enable or disable all users on the system from connecting to this network 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. 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.
Click Save to apply the changes and return to the Network and Host name window. By default, both IPv4 and IPv6 are set to automatic configuration depending on current network settings. This means that addresses such as the local IP address, DNS address, and other settings will be detected automatically when the interface connects to a network. In many cases, this is sufficient, but you can also provide static configuration in the IPv4 Settings and IPv6 Settings tabs. Complete the following steps to configure IPv4 or IPv6 settings:.
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. Select the Require IPv X addressing for this connection to complete check box. If this option remains disabled for both IPv4 and IPv6, the interface is able to connect if configuration succeeds on either IP protocol.
An editing routes dialog specific to the interface opens. Select the Ignore automatically obtained routes check box to configure at least one static route and to disable all routes not specifically configured.
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. Click OK to save your settings and return to the editing routes dialog that is specific to the interface.
Click Save to apply the settings and return to the Network and Host Name window. To learn more about network configuration after installation, see the Configuring and managing networking in RHEL 8 document.
This section contains information about the CentOS 8 security policy add-on and how to configure it for use on your system. The packages are automatically installed. However, by default, no policies are enforced and therefore no checks are performed during or after installation unless specifically configured. Applying a security policy is not a mandatory feature of the installation program.
If you apply a security policy to the system, it is installed using restrictions and recommendations defined in the profile that you selected. The openscap-scanner package is added to your package selection, providing a preinstalled tool for compliance and vulnerability scanning.
After the installation finishes, the system is automatically scanned to verify compliance. From the Installation Summary window, click Security Policy. The Security Policy window opens.
To enable security policies on the system, toggle the Apply security policy switch to ON. The default profiles do not require changes before installation. However, loading a custom profile can require pre-installation tasks. Click Change content to use a custom profile. A separate window opens allowing you to enter a URL for valid security content.
A network connection must be active before you can load a custom profile. The installation program detects the content type automatically. You can install CentOS on a large variety of storage devices. You can configure basic, locally accessible, storage devices in the Installation Destination window. Basic storage devices directly connected to the local system, such as hard disk drives and solid-state drives, are displayed in the Local Standard Disks section of the window.
The storage device selection window lists all storage devices that the installation program can access. Depending on your system and available hardware, some tabs might not be displayed. The devices are grouped under the following tabs:. Storage devices accessible through more than one path, such as through multiple SCSI controllers or Fiber Channel ports on the same system.
The installation program only detects multipath storage devices with serial numbers that are 16 or 32 characters long. The Installation Destination window opens, listing all available drives. The storage devices selection window opens. Click Find to start the search. Each device is presented on a separate row with a corresponding check box. Later in the installation process you can choose to install CentOS on any of the selected devices, and you can choose to mount any of the other selected devices as part of the installed system automatically.
Selected devices are not automatically erased by the installation process and selecting a device does not put the data stored on the device at risk. Any storage devices that you do not select are hidden from the installation program entirely. To chain load the boot loader from a different boot loader, select all the devices present.
You cannot change the name of the iSCSI initiator after you attempt discovery for the first time. To change the iSCSI initiator name, you must restart the installation. A valid IQN entry contains the following information:. For example, represent September as For example, represent the subdomain storage. A colon followed by a string that uniquely identifies this particular iSCSI initiator within your domain or subdomain.
For example, :diskarrays-sn-a A complete IQN is as follows: iqn. The installation program prepopulates the iSCSI Initiator Name field with a name in this format to help you with the structure. For more information about IQNs, see 3. The following options are available:. The installation program attempts to discover an iSCSI target based on the information provided. The Node login authentication type menu contains the same options as the Discovery Authentication Type menu.
However, if you need credentials for discovery authentication, use the same credentials to log in to a discovered node. Click the additional Use the credentials from discovery drop-down menu. When you provide the proper credentials, the Log In button becomes available. Enable this option only for network interfaces that require a host-based DCBX client.
For configurations on interfaces that use a hardware DCBX client, disable the check box. Additionally, if the device meets the requirements for booting, you can set the device as a boot device. You can use manual partitioning to configure your disk partitions and mount points and define the file system that CentOS is installed on. Before installation, you should consider whether you want to use partitioned or unpartitioned disk devices.
You can also create additional partitions and volumes as you require. Click Installation Destination to open the Installation Destination window. Select the disks that you require for installation by clicking the corresponding icon. A selected disk has a check-mark displayed on it. If you selected to encrypt the storage, a dialog box for entering a disk encryption passphrase opens.
Type in the LUKS passphrase:. Deleted Mount points are listed in the left-hand pane. The mount points are organized by detected operating system installations. As a result, some file systems may be displayed multiple times if a partition is shared among several installations.
Select the mount points in the left pane; the options that can be customized are displayed in the right pane. If your system contains existing file systems, ensure that enough space is available for the installation. To remove any partitions, select them in the list and click the - button. The dialog has a check box that you can use to remove all other partitions used by the system to which the deleted partition belongs.
If there are no existing partitions and you want to create the recommended set of partitions as a starting point, select your preferred partitioning scheme from the left pane default for CentOS is LVM and click the Click here to create them automatically link. These are the recommended file systems for a typical installation, but you can add additional file systems and mount points.
Click Done to confirm any changes and return to the Installation Summary window. Continue with adding mount points , configuring the individual mount points , and configuring the underlying partitions or volumes.
If you want to install the system on multiple disks, or if your disks differ in size and a particular partition must be created on the first disk detected by BIOS, then create these partitions first. The Add a New Mount Point dialog opens.
Enter the size of the file system in to the Desired Capacity field; for example, 2GiB. If you do not specify a value in the Desired Capacity field, or if you specify a size bigger than available space, then all remaining free space is used.
Click Add mount point to create the partition and return to the Manual Partitioning window. This procedure describes how to set the partitioning scheme for each mount point that was created manually. To change the devices that a single non-LVM mount point should be located on, select the required mount point from the left-hand pane.
The Configure Mount Point dialog opens. Select one or more devices and click Select to confirm your selection and return to the Manual Partitioning window. Click the Rescan button circular arrow button to refresh all local disks and partitions; this is only required after performing advanced partition configuration outside the installation program. Clicking the Rescan Disks button resets all configuration changes made in the installation program. In the lower left-hand side of the Manual Partitioning window, click the storage device selected link to open the Selected Disks dialog and review disk information.
In some situations, such as when these directories are placed on an iSCSI drive or an FCoE location, the system is unable to boot, or hangs with a Device is busy error when powering off or rebooting. Enter the file system mount point into the Mount Point field.
For a swap file system, do not set the mount point as setting the file system type to swap is sufficient. Enter the size of the file system in the Desired Capacity field. You can use common size units such as KiB or GiB. The default is MiB if you do not set any other unit. RAID is available only if two or more disks are selected for partitioning.
Select the Encrypt check box to encrypt the partition or volume. You must set a password later in the installation program. Select the appropriate file system type for this partition or volume from the File system drop-down menu. Select the Reformat check box to format an existing partition, or deselect the Reformat check box to retain your data. Linux is incredibly configurable. These are generally the same as Microsoft Windows, and that they need a good amount of system resources RAM.
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