The yum command delete restore in centos describes the remedy

preface

yum, short for Yellow dog Updater Modified, was originally developed by Terra Soft, the developer of the first release, yellow dog. It was written in python, which was also known as yup(yellow dog updater), and later refined by the Linux@Duke development team at Duke University. The mission of yum is to automate upgrades, install/remove rpm packages, collect relevant information on rpm packages, check dependencies and automatically prompt users for resolution. yum the key is to have reliable repository, as the name suggests, this is the warehouse software, it can be http or ftp site, can also be a local pool of software, but must contain rpm header, header includes rpm bags of all kinds of information, including description, function, file dependency, etc., it is collect and analyze the header can automatically finish the rest of the task.

Because the server centos6.8 installation of mysql1 could not connect the problem, and then saw a method, 1 accidentally deleted yum, can not restore, very desperate, very uncomfortable. And then you don't have an yum and this centos feels like it's gone, and you find a way to put it in.

 python --version To view python  version 
 whereis python  To view python file 
python: /usr/bin/python2.6 /usr/bin/python /usr/lib /python2.7 /usr/lib/python2.6 /usr/lib64/python2.7 /usr/lib64/python2.6 /usr/include/python2.7 /usr/share/man/man1/python.1.gz

centos6.8 Basic base python is python2.6, centos7 is 2.7, and mine is centos6.8

The solution

Method 1:

This netizen's solution, record 1

$ rpm -qa | grep python- | grep 2.6
$ sudo rpm -ivh --force --nodeps ftp://mirror.switch.ch/pool/4/mirror/scientificlinux/6.5/x86_64/updates/fastbugs/python-2.6.6-52.el6.x86_64.rpm

To fix the problem, yum is available and the principle estimate is that python rolls back to the default 2.6

Method 2:

This is my solution

http://mirrors.163.com/centos/6/os/x86_64/Packages/

1. Go to the above website to download the RPM package as follows

   python-iniparse-0.3.1-2.1.el6.noarch.rpm
   yum-metadata-parser-1.1.2-14.1.el6.x86_64.rpm 
   yum-3.2.29-69.el6.centos.noarch.rpm
   yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm

2. After downloading, install with rpm command, as follows:

   rpm -ivh --force --nodeps python-iniparse-0.3.1-2.1.el6.noarch.rpm
   rpm -ivh --force --nodeps yum-metadata-parser-1.1.2-14.1.el6.x86_64.rpm 
   rpm -ivh --force --nodeps yum-3.2.29-69.el6.centos.noarch.rpm 
   yum-plugin-fastestmirror-1.1.30-30.el6.noarch.rpm

3, to http: / / yum baseurl. org/wiki

Download ES81en-3.4.3. tar.gz, put it in the directory you specified and unzip it. The unzip command is as follows:

    tar -zxvf yum-3.4.3.tar.gz   # Unzip and move in yum-3.4.3 directory 

4, Input./ ES88en. py update

When done, enter yum to solve the problem

Pay attention to

Pay attention to the compatibility between the centos version and the centos version when downloading the above installation package. Otherwise, it is useless.

conclusion

reference

http://blog.sina.com.cn/s/blog_4cbf97060100u2zb.html

http://blog.csdn.NET/u011531010/article/details/53528054

http://blog.sina.com.cn/s/blog_643754960102w82m.html

http://stackoverflow.com/questions/17490921/no-module-named-rpm-when-i-call-yum-on-shell
http://blog.csdn.net/u011832895/article/details/53735198