Unable to install Imunify: One of the configured repositories failed

Issue

Imunify installation fails with the error such as:

[2022-08-18 17:41:52] One of the configured repositories failed (Example repo),
[2022-08-18 17:41:52] and yum doesn't have enough cached data to continue. At this point the only 
[2022-08-18 17:41:52] safe thing yum can do is fail. There are a few ways to work "fix" this: 
<...>
[2022-08-18 17:41:52] 5. Configure the failing repository to be skipped, if it is unavailable. 
[2022-08-18 17:41:52] Note that yum will try to contact the repo. when it runs most commands, 
[2022-08-18 17:41:52] so will have to try and fail each time (and thus. yum will be be much 
[2022-08-18 17:41:52] slower). If it is a very temporary problem though, this is often a nice 
[2022-08-18 17:41:52] compromise: 
[2022-08-18 17:41:52] 
[2022-08-18 17:41:52] yum-config-manager --save --setopt=examplerepo.skip_if_unavailable=true 
[2022-08-18 17:41:52] 
[2022-08-18 17:41:52] failure: repodata/repomd.xml from examplerepo: [Errno 256] No more mirrors to try. 
[2022-08-18 17:41:52] http://download.example.com/centos/7/repodata/repomd.xml: [Errno 14] HTTPS Error 403 - Forbidden 
[2022-08-18 17:41:52] Package imunify-antivirus was not installed.

Environment

• Imunify360
• ImunifyAV
• Installation
• CentOS
• CloudLinux
• AlmaLinux

Solution

• Set the problem repository to be skipped when not available:

  # yum-config-manager --save --setopt=examplerepo.skip_if_unavailable=true

Or:

1. Remove the problem repo files:

   # grep -r "download.example.com" /etc/yum.repos.d
   /etc/yum.repos.d/example-testing.repo:mirrorlist=http://download.example.com/centos/7/repodata/repomd.xml 
   /etc/yum.repos.d/example.repo:mirrorlist=http://download.example.com/centos/7/repodata/repomd.xml

   # mv /etc/yum.repos.d/example* ~/

2. Clear yum cache:

   # yum clean all

Cause

One or more repositories added previously are unavailable.