An error occurred while installing development tools using yum

When we install the development tools development group tools through yum, we may sometimes encounter the following error messages

[root@superdesktop ~]# yum groupinstall "Development Tools"
Loaded plugins: fastestmirror, langpacks
There is no installed groups file.
Maybe run: yum groups mark convert (see man yum)
Determining fastest mirrors
^[[A^[[A
 * base: mirrors.aliyun.com
 * extras: mirrors.aliyun.com
 * updates: mirrors.aliyun.com
base                                                    | 3.6 kB     00:00     
epel                                                    | 5.3 kB     00:00     
extras                                                  | 3.4 kB     00:00     
updates                                                 | 3.4 kB     00:00     
(1/7): base/7/x86_64/group_gz                             | 166 kB   00:00     
(2/7): epel/x86_64/updateinfo                             | 994 kB   00:01     
(3/7): extras/7/x86_64/primary_db                         | 205 kB   00:01     
(4/7): epel/x86_64/group_gz                               |  88 kB   00:05     
(5/7): epel/x86_64/primary_db                             | 6.8 MB   00:17     
(6/7): base/7/x86_64/primary_db                           | 6.0 MB   00:19     
(7/7): updates/7/x86_64/primary_db                        | 6.5 MB   00:19     
Warning: Group development does not have any packages to install.
Maybe run: yum groups mark install (see man yum)
No packages in any requested group available to install or update

There are two solutions to this problem

Method 1

yum clean all
yum groupinstall "Development Tools"

Method 2

If the above method is useless, execute the following command

cd /etc/yum.repos.d
sudo wget http://public-yum.oracle.com/public-yum-el5.repo
cd /etc/pki/rpm-gpg/
sudo wget https://public-yum.oracle.com/RPM-GPG-KEY-oracle-el5

After execution, install

yum groupinstall "Development Tools"

The above methods are useful for personal testing. I hope they can help you