How to create Repository in Linux

How to create Repository in Linux(Appstream and BaseOs) in RHEL8 

First one why should create a repository. What is the role or use of repository in Linux. 

There are basically two repository are mainly use in Linux to download packages(Software's). 

1.Appstream

2.BaseOs

Above two repository are needed to download packages in Linux.

1. First we check the repository using yum repolist all

 No repositories available here.

2.First we mount file on opt using this command:-

    mount /dev/sr0 /opt

Here mounting is successful.

Check mounting using df -h command

3. Change directory cd /etc/yum.repos.d/

    Here we read our first repository file using cat command -

    cat redhat.repo  No repository are available

 

4.Create a new file:- vim rhel8.repo

5.Create our repository Appstream and BaseOs. Use this code copy and paste.

    

First go in insert mode Press  'i'  button on keyboard Then Copy this.

[root@RHEL8 ~]# vi /etc/yum.repos.d/rhel8.repo

[InstallMedia-BaseOS]

name=Red Hat Enterprise Linux 8 - BaseOS

metadata_expire=-1

gpgcheck=1

enabled=1

baseurl=file:///opt/BaseOS/

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

[InstallMedia-AppStream]

name=Red Hat Enterprise Linux 8 - AppStream

metadata_expire=-1

gpgcheck=1

enabled=1

baseurl=file:///opt/AppStream/

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

After paste save file using  esc :wq  Enter

6. Check repository using yum repolist all command. And here both repository are created successfully in enabled mode.

7. Know we can remove this subscription message also.

 

   To hide the "system not register message" use below command

    vi /etc/yum/pluginconf.d/subscription-manager.conf 

   Go in insert mode and  Change enable=1 to enable=0

And save file using esc :wq enter

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