Former Ubuntu user wants to know how to add repositories in RHEL 7.4?

linuxuser7 · 04-21-2018, 10:50 AM

I am using Scientific Linux 7.4 which is a repackaged Red Hat Enterprise Linux with a scientific bent. Coming from Ubuntu, I am new to the Red Hat branch of Linux. I have a really simple and stupid question: How do I add repositories on RHEL.

jsbjsb001 · 04-21-2018, 11:14 AM

Quote:

Originally Posted by linuxuser7

I am using Scientific Linux 7.4 which is a repackaged Red Hat Enterprise Linux with a scientific bent. Coming from Ubuntu, I am new to the Red Hat branch of Linux. I have a really simple and stupid question: How do I add repositories on RHEL.

A quick Google search yielded this, that mentions (as I was suspecting) "yum", therefore Scientific Linux appears to use yum as it's "frontend" for the "rpm" package manager. It also appears that, you may be able to use "Enterprise Linux software repositories", as well as the one's for Scientific Linux itself.

The following link will tell you how to add extra software repo's. I know it does not mention Scientific Linux (AFAICS), but given the above, it should be the same procedure.

https://www.cyberciti.biz/faq/instal...os-redhat-7-x/

linuxuser7 · 04-21-2018, 11:37 AM

Thank you for the links. Yes, Scientific Linux really is just RHEL. I am familiar with installing packages with yum, but not adding repositories. I've added them only by copying and pasting code without really understanding the syntax or what I was doing.

jsbjsb001 · 04-21-2018, 11:48 AM

Quote:

Originally Posted by linuxuser7

Thank you for the links. Yes, Scientific Linux really is just RHEL. I am familiar with installing packages with yum, but not adding repositories. I've added them only by copying and pasting code without really understanding the syntax or what I was doing.

That's ok! There's at least a couple of ways you can add extra repo's - like most things in Linux. If you have a look in /etc/yum.repos.d/ you'll see a load of .repo files, these files define your configured software repo's. Here is one just plucked from the same place:

Quote:

### Name: ELRepo.org Community Enterprise Linux Repository for el7
### URL: http://elrepo.org/

[elrepo]
name=ELRepo.org Community Enterprise Linux Repository - el7
baseurl=http://elrepo.org/linux/elrepo/el7/$basearch/
http://mirrors.coreix.net/elrepo/elrepo/el7/$basearch/
http://mirror.rackspace.com/elrepo/elrepo/el7/$basearch/
http://repos.lax-noc.com/elrepo/elrepo/el7/$basearch/
http://mirror.ventraip.net.au/elrepo/elrepo/el7/$basearch/
mirrorlist=http://mirrors.elrepo.org/mirrors-elrepo.el7
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.org
protect=0
...

There's more in that file, but to save space in the post, I chopped the last part of it off. But you can see the basic syntax - it's the same syntax for all .repo files.

So, you can do it manually as well if you want...

chrism01 · 04-22-2018, 07:04 PM

As above, there's at least couple of ways:

1. just edit a new repofile as above (read up on the options)
2. in many cases, eg EPEL, they supply an rpm for you to install manually (usually d/l first) and that will create the repo file(s) for you.

NB: If you do add extra repos, definitely install https://access.redhat.com/discussions/1348623 first. This https://wiki.centos.org/PackageManag...8ae9202b66d6da explains it as well.
Otherwise you risk borking your system...