[Rocky Linux] GUI 환경이 안 나올 경우 설치 방법

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Rocky Linux를 minimal을 설치했을 경우에는 최소 패키지들만 설치된 상태이기 때문에 GUI 화면이 나오지 않는다.

그래서 추가로 GUI 환경을 사용하기 위한 설치 방법을 정리해보았다.

1. GUI 패키지 설치

1) 패키지 업데이트

dnf update -y

2) 그룹리스트 확인

sudo dnf group list

# dnf grouplist
Last metadata expiration check: 0:16:13 ago on Sun 16 Jan 2022 10:37:55 PM KST.
Available Environment Groups:
   Server with GUI
   Server
   Workstation
   Virtualization Host
   Custom Operating System
Installed Environment Groups:
   Minimal Install
Available Groups:
   Container Management
   .NET Core Development
   RPM Development Tools
   Development Tools
   Graphical Administration Tools
   Headless Management
   Legacy UNIX Compatibility
   Network Servers
   Scientific Support
   Security Tools
   Smart Card Support
   System Tools

3) 필요한 패키지 설치

그룹 리스트에서 "Server with GUI" 와 "Graphical Administration Tools" 를 설치

설치 용량이 이런데 설치할래? 라고 물으면 y를 입력해서 허용한다. (기본값은 N)

# dnf groupinstall "Server with GUI" "Graphical Administration Tools"
Last metadata expiration check: 0:18:25 ago on Sun 16 Jan 2022 10:37:55 PM KST.
no group 'dns-server' from environment 'graphical-server-environment'
No match for group package "rocky-release-eula"
No match for group package "hpijs"
Dependencies resolved.
=======================================================================================================================================================
 Package                                             Architecture   Version                                                Repository             Size
=======================================================================================================================================================
Installing group/module packages:
 ModemManager                                        x86_64         1.10.8-4.el8                                           ISO_BaseOS            922 k
 NetworkManager-adsl                                 x86_64         1:1.32.10-4.el8                                        ISO_BaseOS            143 k
 NetworkManager-bluetooth                            x86_64         1:1.32.10-4.el8                                        ISO_BaseOS            169 k
 NetworkManager-config-server                        noarch         1:1.32.10-4.el8                                        ISO_BaseOS            130 k
 NetworkManager-wifi                                 x86_64         1:1.32.10-4.el8                                        ISO_BaseOS            189 k
 NetworkManager-wwan                                 x86_64         1:1.32.10-4.el8                                        ISO_BaseOS            175 k
 PackageKit                                          x86_64         1.1.12-6.el8                                           ISO_AppStream         598 k
 PackageKit-command-not-found                        x86_64         1.1.12-6.el8                                           ISO_AppStream          26 k

[. . .]

Transaction Summary
=======================================================================================================================================================
Install  963 Packages

Total size: 893 M
Installed size: 2.6 G
Is this ok [y/N]: y

2. GUI로 부팅 설정

GUI환경으로 부팅하도록 설정하려면 런라벨을 변경해야 한다.

먼저 현재 부팅 모드를 확인하고, multi-user.taget이라면 graphical.target으로 변경해준다.

그리고나서 재부팅한다.

# systemctl get-default
multi-user.target

# systemctl set-default graphical.target
Removed /etc/systemd/system/default.target.
Created symlink /etc/systemd/system/default.target → /usr/lib/systemd/system/graphical.target.

# systemctl get-default
graphical.target

# reboot