Question about using yum to install epel package on CentOS 7

["Claessen, Paul" <Paul.Claessen@xxxxxxx>]

While testing a script that installs packages, I ran into a situation where I seem to have to (or can) install the epel package twice in a row (and get different results).

This may actually be a package handler (rpm, yum) issue, but it only happens with epel-release, so maybe someone in the epel community can explain this to me.

Normally when one tries to install a package that’s already installed, yum will tell you “package already installed, nothing to do”.

 

However, when I do that with epel-release, after a first install, it will accept a second install as well (details below), installing something different, and only on the 3^rd install it will say “package already installed, nothing to do”.

To demonstrate this I will first do (so as to start from scratch):

sudo yum –y remove epel-release

 

(this will remove the package, and it tells you it has done so. I actually did this twice, but the 2^nd time it told me there was nothing to remove).

 

 

Then run

 

sudo yum –y install epel-release

 

It will tell you: “Installed:              epel-release.noarch 0:7-9”

 

I would have expected it to install whatever is the latest release, however if I then immediately run the SAME command:

sudo yum –y install epel-release

It tells me:
“
  Updating   : epel-release-7-10.noarch

  Cleanup    : epel-release-7-9.noarch

  Verifying  : epel-release-7-10.noarch

  Verifying  : epel-release-7-9.noarch

 

Updated:

  epel-release.noarch 0:7-10

”

Why didn’t it install 7-10 the very first time I ran yum install?
Why do I, seeminly, have to run yum install twice to get the latest version?

Can someone shed a light on this?

 

Log file of this all attached,

~ Paul Claessen

Attachment: yum.log
Description: yum.log

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