Remember the problem that RedHat 6 Yum cannot be used once

Preface

The experiment uses yum Way to install wireshark, Virtual machines provided linux The version is Redhat 6.
perform yum -y install wireshark wireshark-gnome Command to install , Tips ：
No package xxxxx available（ Later I tried to install 、 Update, etc. , This is the order ）

So find out why , The discovery is due to Redhat Self contained yum Need to register , So we can only use free CentOS Of yum.

Problem solving

First, ensure that the virtual machine is connected to the network , If not connected , Please check the service for VM term , take VM Service startup .

1. Because you can't use your own , So we have to uninstall our own first , Use rpm command ：
   rpm -qa|grep yum|xargs rpm -e --nodeps
   （ Remove and yum Everything about ）

2. Install the required files , Execute the following commands respectively ：

wget http://mirrors.163.com/centos/6/os/x86_64/Packages/python-iniparse-0.3.1-2.1.el6.noarch.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/python-libs-2.6.6-66.el6_8.x86_64.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/python-urlgrabber-3.9.1-11.el6.noarch.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-3.2.29-81.el6.centos.noarch.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-metadata-parser-1.1.2-16.el6.x86_64.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-plugin-fastestmirror-1.1.30-41.el6.noarch.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-updateonboot-1.1.30-41.el6.noarch.rpm
wget http://mirrors.163.com/centos/6/os/x86_64/Packages/yum-utils-1.1.30-41.el6.noarch.rpm

Installation ：

rpm -ivh python-iniparse-0.3.1-2.1.el6.noarch.rpm
rpm -ivh --force python-libs-2.6.6-66.el6_8.x86_64.rpm
rpm -ivh --force python-urlgrabber-3.9.1-11.el6.noarch.rpm
rpm -ivh --force yum-*

3. open Linux Website in , Go to CentOS Image usage help Website click on CentenOS 6 Download the corresponding configuration file .

4. Put the downloaded configuration file in /etc/yum.repos.d/ Under the table of contents .
   （ Be careful ： It's best to have only one... In this directory .repo Postfix file , Delete the original configuration file after backup ）

5. use vim CentenOS6-Base-163.repo Edit the configuration file , Input :%s/$releasever/6/g The order will $releasever Replace with 6.
   （yum Medium $releasever Variable is taken redhat-release-server rpm The attribute value of the package ( %{version}), So this step is actually setting the version number ）

6. Clear cache yum clean all, Then rebuild the cache yum makecache, thus ,yum installation is complete .

To test yum -y install wireshark wireshark-gnome command , Installation successful ！