• 由于Redhat版本的linux不能免費使用yum源安裝依賴包，這導致不能愉快的安裝Oracle的相關產品，本文就介紹一下如何在Redhat7上配置yum源
• 首先查看一下Redhat7默認安裝的yum，查詢結果如下

[wen@localhost Desktop]$ rpm -qa | grep yum

• 發現默認有安裝yum，先將其卸載

[wen@localhost Desktop]$ su - root //切換到root用戶 進行卸載 Password: Last login: Sat Nov 2 19:50:09 CST 2019 on pts/0 [root@localhost ~]# rpm -qa|grep yum|xargs rpm -e --nodeps //忽略依賴性 卸載 [root@localhost ~]# rpm -qa | grep yum //再次查詢是否還有yum相關的安裝包，以確保卸載完全

• 將準備好的yum安裝包上傳到虛擬主機，我是放在/home/yum目錄下
  
  
• 因為要替換，所以一定要是完整的一套，還有一個rhel-debuginfo.repo文件要配置。部分博客配置的不對，這個文件配置不對也是不行的，所以我是測試好的一套yum包給大家包括配置文件，需要的可以找我。執行: rpm -ivh *.rpm 一次性執行依賴包，因為包之間會相互依賴。

[root@localhost yum]# rpm -ivh *.rpm

• 新建配置文件/etc/yum.repos.d/CentOS-Base.repo，加入以下內容即可，不要改動，不要以為你很厲害，真的！然后保存退出

[root@localhost yum]# vi /etc/yum.repos.d/CentOS-Base.repo #CentOS-Base.repo # # The mirror system uses the connecting IP address of the client and the # update status of each mirror to pick mirrors that are updated to and # geographically close to the client. You should use this for CentOS updates # unless you are manually picking other mirrors. # # If the mirrorlist= does not work for you, as a fall back you can try the # remarked out baseurl= line instead. # # [base] name=CentOS-$7 - Base - 163.com #mirrorlist=http://mirrorlist.centos.org/?release=$7&arch=$basearch&repo=os baseurl=http://mirrors.163.com/centos/7/os/$basearch/ gpgcheck=1 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7#released updates [updates] name=CentOS-$7 - Updates - 163.com #mirrorlist=http://mirrorlist.centos.org/?release=$7&arch=$basearch&repo=updates baseurl=http://mirrors.163.com/centos/7/updates/$basearch/ gpgcheck=1 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7#additional packages that may be useful [extras] name=CentOS-$7 - Extras - 163.com #mirrorlist=http://mirrorlist.centos.org/?release=$7&arch=$basearch&repo=extras baseurl=http://mirrors.163.com/centos/7/extras/$basearch/ gpgcheck=1 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7#additional packages that extend functionality of existing packages [centosplus] name=CentOS-$7 - Plus - 163.com baseurl=http://mirrors.163.com/centos/7/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=http://mirrors.163.com/centos/RPM-GPG-KEY-CentOS-7

然后執行yum clear all，就可以用yum來安裝依賴包了

[root@node ~]# yum clear all

總結

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