CentOS 8 (1905) – yum update

安裝好 CentOS 8 (1905) 執行更新,會發現無法更新.

[root@localhost ~]# yum update
Failed to set locale, defaulting to C.UTF-8
Last metadata expiration check: 5:52:13 ago on Wed Jan 15 15:39:37 2020.
Dependencies resolved.
Nothing to do.
Complete!

透過 dnf 也一樣,關於 YUM , DNF 請參考 Linux 套件管理 ( Package Manager ) 說明 – http://benjr.tw/2678

[root@localhost ~]# dnf update
Failed to set locale, defaulting to C.UTF-8
Last metadata expiration check: 4:26:08 ago on Wed Jan 15 19:21:48 2020.
Dependencies resolved.
Nothing to do.
Complete!

在官網有找到說明.
https://wiki.centos.org/Manuals/ReleaseNotes/CentOSStream#Stream_1905_users_need_to_take_action_after_install

Stream 1905 users need to take action after install

If you have used any of the current 1905 CentOS Stream iso images to perform an install then you are currently at risk of missing patches, including those that may fix security vulnerabilities.

A problem has been discovered with the current CentOS Stream 1905 iso images. Under at least some circumstances and possibly all CentOS Stream installs will neglect to install the centos-release-stream package which should provide access to the CentOS Stream specific dnf repositories. The effect of this is that the initial will pick up all the latest Stream packages as they are at install time but these will never have been updated since that install. You are potentially missing patches that are in the 8.0.1905 BaseOS/AppStream/PowerTools/extras repos because your currently installed packages are at a higher version number already.

Fortunately the remedy is easy : dnf install -y centos-release-stream and then dnf update

The problem will be fixed in the upcoming 8.1 when it is released. Only those people who use the 1905 media are affected. 

解決方式有下面兩種

  1. DNF
    解決方案就是透過 dnf 但須先安裝 centos-release-stream 套件.

    [root@localhost ~]# dnf install -y centos-release-stream 
    Last metadata expiration check: 0:00:50 ago on Wed Jan 15 21:41:01 2020.
    Dependencies resolved.
    =================================================================================================================
     Package                           Architecture       Version                           Repository          Size
    =================================================================================================================
    Installing:
     centos-release-stream             x86_64             8.0-0.1905.0.9.el8                extras              10 k
    
    Transaction Summary
    =================================================================================================================
    Install  1 Package
    
    Total download size: 10 k
    Installed size: 6.6 k
    Downloading Packages:
    centos-release-stream-8.0-0.1905.0.9.el8.x86_64.rpm                               51 kB/s |  10 kB     00:00    
    -----------------------------------------------------------------------------------------------------------------
    Total                                                                             11 kB/s |  10 kB     00:00     
    Running transaction check
    Transaction check succeeded.
    Running transaction test
    Transaction test succeeded.
    Running transaction
      Preparing        :                                                                                         1/1 
      Installing       : centos-release-stream-8.0-0.1905.0.9.el8.x86_64                                         1/1 
      Verifying        : centos-release-stream-8.0-0.1905.0.9.el8.x86_64                                         1/1 
    
    Installed:
      centos-release-stream-8.0-0.1905.0.9.el8.x86_64                                                                
    
    Complete!
    

    接下來就可以透過 dfn 更新了.

    [root@localhost ~]# dnf update
    CentOS-Stream - AppStream                                                        512 kB/s | 5.8 MB     00:11    
    CentOS-Stream - Base                                                             252 kB/s | 4.3 MB     00:17    
    CentOS-Stream - Extras                                                           1.4 kB/s | 2.1 kB     00:01    
    Dependencies resolved.
    =================================================================================================================
     Package                               Arch   Version                                     Repository        Size
    =================================================================================================================
    Installing:
     kernel                                x86_64 4.18.0-151.el8                              Stream-BaseOS    2.1 M
     kernel-core                           x86_64 4.18.0-151.el8                              Stream-BaseOS     26 M
     kernel-modules                        x86_64 4.18.0-151.el8                              Stream-BaseOS     23 M
    Upgrading:
     firefox                               x86_64 68.3.0-1.el8_1                              Stream-AppStream  95 M
     flatpak                               x86_64 1.0.9-1.el8_1                               Stream-AppStream 1.0 M
     flatpak-libs                          x86_64 1.0.9-1.el8_1                               Stream-AppStream 350 k
     fribidi                               x86_64 1.0.4-7.el8_1                               Stream-AppStream  89 k
     ghostscript                           x86_64 9.25-5.el8_1.1                              Stream-AppStream  82 k
    ......
    

    更新到 CentOS 8.1 之後就可以使用 yum update

    [root@localhost ~]# cat /etc/redhat-release
    CentOS Linux release 8.1.1911 (Core) 
    
    [root@localhost ~]# yum update
    Failed to set locale, defaulting to C.UTF-8
    CentOS-Stream - AppStream                                                        789 kB/s | 5.8 MB     00:07    
    CentOS-Stream - Base                                                             1.1 MB/s | 4.3 MB     00:03    
    CentOS-Stream - Extras                                                           2.5 kB/s | 2.1 kB     00:00    
    Dependencies resolved.
    Nothing to do.
    Complete!
    
  2. Continuous Release (CR) Repository
    Continuous Release (CR) Repository 會使用 CentOS 還正在測試階段的修補程式 (下一版本).也可以使用.

    [root@localhost ~]# yum update --enablerepo=cr
    
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