RHEL 6以上操作系統Yum提示This system is not registered
一、問題現象：
[root@open_source ~]# yum clean
Loaded plugins: product-id, search-disabled-repos,
subscription-manager
This system is not registered with an entitlement server. You
can use subscription-manager to register.
Error: clean requires an option: headers, packages, metadata,
dbcache, plugins, expire-cache, rpmdb, all
[root@open_source ~]# yum check-update
Loaded plugins: product-id, search-disabled-repos, subscription-manager
This system is not registered with an entitlement server. You
can use subscription-manager to register.
[root@open_source ~]# yum makecache
Loaded plugins: product-id, search-disabled-repos,
subscription-manager
This system is not registered with an entitlement server. You
can use subscription-manager to register.
base
| 2.8 kB 00:00:00
Metadata Cache Created二、問題原因：
因爲我的操作系統使用的是RedHat，提示需要註冊訂閱，說白了就是要掏錢纔給用。
三、問題分析：
該問題的處理辦法實際上很簡單，因爲RedHat是商業版企業Linxu系統，其涉及到的包只有Yum，我們可以通過替換社區版的包解決此問題。
四、解決辦法：
替換社區版CentOS的包解決此問題。
4.1. 獲取包的途徑主要有以下幾個：
https://mirrors.edge.kernel.org/
http://mirrors.aliyun.com/centos/
……
4.2.我通過Centos Yum站點下載以下四個所需的包
http://mirror.centos.org/centos-7/7.7.1908/os/x86_64/Packages/python-iniparse-0.4-9.el7.noarch.rpm
http://mirror.centos.org/centos-7/7.7.1908/os/x86_64/Packages/yum-3.4.3-163.el7.centos.noarch.rpm
**注意：下載的包要大於或等於當前系統版本，下載之前要確認操作系統版本，可通過命令cat
/etc/redhat-release 查看。**
4.3 卸載系統中現有的yum包
[root@open_source ~]# rpm -qa|grep yum
yum-metadata-parser-1.1.4-10.el7.x86_64
yum-3.4.3-163.el7.noarch
yum-rhn-plugin-2.0.1-10.el7.noarch
[root@open_source ~]# rpm -qa|grep yum | xargs rpm -e --nodeps
[root@open_source ~]# rpm -qa|grep yum
[root@open_source ~]#4.4 分別安裝剛纔下載的幾個RPM包
[root@open_source CentOS_yum]# rpm -ivh
python-iniparse-0.4-9.el7.noarch.rpm
warning: python-iniparse-0.4-9.el7.noarch.rpm: Header V3 RSA/SHA256
Signature, key ID f4a80eb5: NOKEY
Preparing...
################################# [100%]
package
python-iniparse-0.4-9.el7.noarch is already installed
file
/usr/lib/python2.7/site-packages/iniparse/ini.pyc from install of
python-iniparse-0.4-9.el7.noarch conflicts with file from package
python-iniparse-0.4-9.el7.noarch
file
/usr/lib/python2.7/site-packages/iniparse/ini.pyo from install of python-iniparse-0.4-9.el7.noarch
conflicts with file from package python-iniparse-0.4-9.el7.noarch
[root@open_source CentOS_yum]# rpm -ivh
python-urlgrabber-3.10-9.el7.noarch.rpm
warning: python-urlgrabber-3.10-9.el7.noarch.rpm: Header V3
RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Preparing...
################################# [100%]
package
python-urlgrabber-3.10-9.el7.noarch is already installed
file
/usr/lib/python2.7/site-packages/urlgrabber/grabber.pyc from install of
python-urlgrabber-3.10-9.el7.noarch conflicts with file from package
python-urlgrabber-3.10-9.el7.noarch
file
/usr/lib/python2.7/site-packages/urlgrabber/grabber.pyo from install of
python-urlgrabber-3.10-9.el7.noarch conflicts with file from package
python-urlgrabber-3.10-9.el7.noarch
[root@open_source
CentOS_yum]# rpm -ivh yum-metadata-parser-1.1.4-10.el7.x86_64.rpm
warning: yum-metadata-parser-1.1.4-10.el7.x86_64.rpm: Header V3
RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
Preparing... #################################
[100%]
Updating / installing...
1:yum-metadata-parser-1.1.4-10.el7 #################################
[100%]
[root@open_source CentOS_yum]# rpm -ivh
yum-3.4.3-163.el7.centos.noarch.rpm yum-plugin-fastestmirror-1.1.31-52.el7.noarch.rpm
warning: yum-3.4.3-163.el7.centos.noarch.rpm: Header V3 RSA/SHA256
Signature, key ID f4a80eb5: NOKEY
Preparing...
################################# [100%]
Updating / installing...
1:yum-plugin-fastestmirror-1.1.31-5#################################
[ 50%]
2:yum-3.4.3-163.el7.centos
################################# [100%]
[root@open_source CentOS_yum]# rpm -qa|grep yum
yum-metadata-parser-1.1.4-10.el7.x86_64
yum-3.4.3-163.el7.centos.noarch
yum-plugin-fastestmirror-1.1.31-52.el7.noarch4.5 驗證
[root@open_source CentOS_yum]# yum makecache
Loaded plugins: fastestmirro
r, product-id, search-disabled-repos,
subscription-manager
This system is not registered with an entitlement server. You can
use subscription-manager to register.
Determining fastest mirrors
base
| 2.8 kB 00:00:00
(1/5): base/group_gz
| 103 kB 00:00:00
(2/5): base/primary
| 2.0 MB 00:00:00
(3/5): base/filelists
| 3.1 MB 00:00:00
(4/5): base/productid
|
1.6 kB 00:00:00
(5/5): base/other
| 1.1 MB 00:00:00
base
5229/5229
base
5229/5229
base
5229/5229
Metadata Cache Created
[root@open_source CentOS_yum]# yum install -y ftp
Loaded plugins: fastestmirror, product-id, search-disabled-repos,
subscription-manager
This system is not registered with an entitlement server. You can
use subscription-manager to register.
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package ftp.x86_64 0:0.17-67.el7 will be installed
--> Finished Dependency Resolution
Dependencies Resolved
==================================================================================================================================================
Package Arch Version
Repository
Size
==================================================================================================================================================
Installing:
ftp x86_64 0.17-67.el7 base 61 k
Transaction Summary
==================================================================================================================================================
Install 1 Package
Total download size: 61 k
Installed size: 96 k
Downloading packages:
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Warning: RPMDB altered outside of yum.
** Found 1 pre-existing rpmdb problem(s), 'yum check' output
follows:
rhn-check-2.0.2-24.el7.x86_64 has missing requires of
yum-rhn-plugin >= ('0', '1.6.4', '1')
Installing :
ftp-0.17-67.el7.x86_64
1/1
Verifying : ftp-0.17-67.el7.x86_64
1/1
Installed:
ftp.x86_64
0:0.17-67.el7
Complete!
通過替換Yum包的方式完成問題處理，Yum可以正常使用了。