> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/tmedia-documentation/other-pages/operations/offline-repository-procedure-for-centos-7.md).

# Offline Repository Procedure for CentOS 7

How to set up the CentOS 7 package manager on a system with no internet access to the TelcoBridges repository, using a downloaded local copy.

This describes the configuration of CentOS packages manager for a system that does not have access to TelcoBridges repository (no internet access).

### Download TelcoBridges repository

Download the ISO image of TelcoBridges repository on a machine that has access to the system.

* Minimal version is here: [tb\_centos7\_x86\_64\_repo\_minimal.iso](https://repo.telcobridges.com/centos/7/isos/x86_64/tb_centos7_x86_64_repo_minimal.iso) (2025.07 0.9GB)
* Full version is here: [tb\_centos7\_x86\_64\_repo.iso](https://repo.telcobridges.com/centos/7/isos/x86_64/tb_centos7_x86_64_repo.iso) (2025.07 6.6GB)

### Upload TelcoBridges repository to the system

Upload the ISO file to the "/root" directory of the system with scp or a SFTP tool like [FileZilla](http://filezilla-project.org/)

### Mount the ISO file on the system

Mount the ISO file on your system

1. mkdir -p /repo/centos/7
2. mount -t iso9660 -o loop /root/tb\_centos7\_x86\_64\_repo.iso /repo/centos/7

### Change TelcoBridges repository file

Edit the *TB-Base.repo* file

1. vim /etc/yum.repos.d/TB-Base.repo

Change *\[tb-base]* **baseurl** line to: baseurl=file:///repo/centos/7/os/$basearch/

### Update CentOS 7

1. yum clean metadata
2. yum update

### Delete ISO file

Since the repository file is quite large, it is better to delete it after the update is complete:

1. rm /root/\*repo.iso

### Other Links

* Here is a link to [upgrade the Telcobridges Linux](/tmedia-documentation/other-pages/operations/upgrade-telcobridges-linux-software-packages.md)
* Here is a link to [Update a TelcoBridges linux OS without internet access](/tmedia-documentation/other-pages/operations/offline-repository-procedure-for-telcobridges-linux.md)
* Here is a link to [Update a CentOS 5 operating system without internet access](/tmedia-documentation/other-pages/operations/offline-repository-procedure-for-centos-7.md)


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