CentOS 安装 DNF

0. 概述

DNF 是 YUM 的下一代包管理软件,改进 YUM 包管理工具的一些问题,提升了用户体验,内存占用,依赖分析,运行速度等多方面的内容,本文就介绍一下如何在 CentOS 下体验 DNF。

1. YUM 快速安装

最常见的想法就是通过 YUM 安装,但是,如果你之前没有特别设置过 Repo 源的话,应该是安装不上的,例如:

[root@liqiang.io]# yum install dnf
 Loaded plugins: fastestmirror
 Loading mirror speeds from cached hostfile
 * base: ftp.iitm.ac.in
 * elrepo: elrepo.mirror.angkasa.id
 * epel: kartolo.sby.datautama.net.id
 * extras: ftp.iitm.ac.in
 * updates: ftp.iitm.ac.in
 Nothing to do

所以,你需要考虑添加一个额外的源,经过我的查找,在 EPEL 源中是有 DNF 的。

2. 添加 EPEL Repo

[root@liqiang.io]# yum install epel-release

3. 安装 DNF

[root@liqiang.io]# yum install dnf
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: mirrors.ocf.berkeley.edu
 * extras: centos.mirror.ndchost.com
 * nux-dextop: mirror.li.nux.ro
 * updates: mirrors.ocf.berkeley.edu
... ...
Dependencies Resolved

=====================================================================================================================================
 Package                             Arch                      Version                               Repository                 Size
=====================================================================================================================================
Installing:
 dnf                                 noarch                    4.0.9.2-1.el7_6                       extras                    357 k
Installing for dependencies:
 dnf-data                            noarch                    4.0.9.2-1.el7_6                       extras                     51 k
 libcomps                            x86_64                    0.1.8-13.el7                          extras                     75 k
 libdnf                              x86_64                    0.22.5-1.el7_6                        extras                    533 k
 libmodulemd                         x86_64                    1.6.3-1.el7                           extras                    141 k
 librepo                             x86_64                    1.8.1-7.el7                           base                       81 k
 libsolv                             x86_64                    0.6.34-4.el7                          base                      329 k
 python2-dnf                         noarch                    4.0.9.2-1.el7_6                       extras                    414 k
 python2-hawkey                      x86_64                    0.22.5-1.el7_6                        extras                     68 k
 python2-libcomps                    x86_64                    0.1.8-13.el7                          extras                     47 k
 python2-libdnf                      x86_64                    0.22.5-1.el7_6                        extras                    608 k
... ...
Dependency Installed:
  dnf-data.noarch 0:4.0.9.2-1.el7_6           libcomps.x86_64 0:0.1.8-13.el7              libdnf.x86_64 0:0.22.5-1.el7_6             
  libmodulemd.x86_64 0:1.6.3-1.el7            librepo.x86_64 0:1.8.1-7.el7                libsolv.x86_64 0:0.6.34-4.el7              
  python2-dnf.noarch 0:4.0.9.2-1.el7_6        python2-hawkey.x86_64 0:0.22.5-1.el7_6      python2-libcomps.x86_64 0:0.1.8-13.el7     
  python2-libdnf.x86_64 0:0.22.5-1.el7_6     

Complete!

4. 验证一下

[root@liqiang.io]# dnf install flask-admin
Visual Studio Code                                                                                   315 kB/s | 2.8 MB     00:09    
... ...
Last metadata expiration check: 0:05:31 ago on Sat 01 Feb 2020 11:45:25 PM CST.
===================================================== Name Matched: flask-admin =====================================================
python-flask-admin.noarch : Simple and extensible admin interface framework for Flask

OK,看上去工作正常,完工。

5. Ref

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