redhat7 升级YUM

#查看所有已安装的包含"yum"关键字的rpm包rpm-qa|grep yum#删除已安装的包含"yum"关键字的rpm包rpm-qa|grep yum|xargs rpm-e--nodeps#删除已安装的包含"python-urlgrabber"关键字的rpm包rpm-qa|grep python-urlgrabber|xargs rpm-e--nodeps#打开阿里yum源地址,按 Ctrl +F 搜索rmp包名 https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/#下载这8个rpm包 ,或者在windows主机上下载好这些rpm包, 再用"WinSCP"这个软件的sftp协议传输到redhat系统中wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-3.4.3-163.el7.centos.noarch.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-langpacks-0.4.2-7.el7.noarch.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-rhn-plugin-2.0.1-10.el7.noarch.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-utils-1.1.31-52.el7.noarch.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-metadata-parser-1.1.4-10.el7.x86_64.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.31-52.el7.noarch.rpmwget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/yum-updateonboot-1.1.31-52.el7.noarch.rpm wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/python-urlgrabber-3.10-9.el7.noarch.rpm#安装该目录下所有的rpm包rpm-ivh--force*报错如下:意思是安装yum-3.4.3-163.el7.centos.noarch需要rpm-4.11.x的版本warning:yum-3.4.3-163.el7.centos.noarch.rpm:HeaderV3RSA/SHA256Signature,keyIDf4a80eb5:NOKEYerror:Faileddependencies:rpm>=0:4.11.3-22isneeded by yum-3.4.3-163.el7.centos.noarch#下载rmp-4.11.x版本的rmp包wget https://mirrors.aliyun.com/centos/7/os/x86_64/Packages/rpm-4.11.3-40.el7.x86_64.rpm#再次执行rpm-ivh--force*#这里如果还是报错,则是需要升级安装rpm-Uvhrpm-4.11.3-40.el7.x86_64.rpm#下载对应版本的 CentOS-Base.repo 到 /etc/yum.repos.d/wget-O/etc/yum.repos.d/CentOS-Base.repohttp://mirrors.aliyun.com/repo/Centos-7.repo#替换CentOS-Base.repo里面的内容,"$releasever"替换为"7"sed-i's/$releasever/7/g'/etc/yum.repos.d/CentOS-Base.repo#编辑yum.conf这个文件,nano/etc/yum.conf将"plugins=1"改为"plugins=0",表示禁用所有插件#清理yum缓存yum clean all#生成缓存yum makecache#验证yum源是否可用yum repolist#搜索yum源仓库里的软件,关键字为"vim"yum search vim#查看yum源仓库中所有的软件, 对结果进行过滤关键字为"vim"yum list|grep vim#使用yum源安装"vim"这个软件yum-y install vim

转自：https://www.jianshu.com/p/9d35041eb2cd