Which repo files can we remove after a failed Remi-Safe repo install?

Question

We were attempting to upgrade from PHP 5.4 to PHP 7.0 or 7.1 on CentOS 7. We were following How to install or upgrade to PHP 7 on CentOS 7 Linux Server. The update failed so we want to back-out all the changes for Remi-Safe. It failed at the dependency stage due to broken dependencies, so nothing was installed.

We added the PHP 7.x Remi-Safe repos with the following commands:

$ mkdir php-up && cd php-up
$ wget -q http://rpms.remirepo.net/enterprise/remi-release-7.rpm
$ wget -q https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
$ rpm -Uvh remi-release-7.rpm
$ rpm -Uvh epel-release-latest-7.noarch.rpm

According to YUM Remove Repo (Repository) – YUM Disable Repo (Repository) there is no way to undo rpm -Uvh <repo> from the command line.

Examining /etc/yum.repos.d we have several Remi-Safe artifacts, including stuff we don't believe we installed:

# ls
CentOS-Base.repo       CentOS-Media.repo    epel-testing.repo  remi-php72.repo
CentOS-CR.repo         CentOS-Sources.repo  remi-php54.repo    remi.repo
CentOS-Debuginfo.repo  CentOS-Vault.repo    remi-php70.repo    remi-safe.repo
CentOS-fasttrack.repo  epel.repo            remi-php71.repo    vz.repo

The thing that is confusing me is repos like remi-php54.repo. I don't believe we installed it so I'm not sure if we have business removing it.

My question is, can we rf -f remi-* and get back to our original state? Or do we need to do something else here?

Solution

remi-release-7 installs the following files:

• /etc/pki/rpm-gpg/RPM-GPG-KEY-{remi,remi2017}
• /etc/yum.repos.d/remi*.repo

so you should be fine removing those. (Protip: mc is very useful to navigate into rpms and see what files they contain.) Though I don't quite see from the link you give that rpm -e remi-release or yum remove remi-release shouldn't work.