Yum-plugin-priorities

yum-plugin-priorities

	Warning:
	Currently under development.

This page is intended to explore the possible use of yum-plugin-priorities in order to help prevent the installation of unwanted rpms from 3rd-party repositories such as dag, dries, etc.

Inspired by Bugzilla:4757

Installation

SME 7.x (Centos 4.x

yum --enablerepo=extras install yum-plugin-priorities

SME 8.x (Centos 5.x)

(untested!)

yum --enablerepo=extras install yum-priorities

Configuration

New config files

(SME 7.x): The installation of yum-plugin-priorities will create /etc/yum/pluginconf.d/priorities.conf with the following settings

[main]
enabled = 1
check_obsoletes = 1

These settings tell yum to pay attention to the 'priority' setting for each repo, and to make sure the an 'obsoletes' flag in a low priority repo will not result in the removal of a package from a higher-priority repo.

Either Modify /etc/yum.conf sme 7.3

Now add priority=10 to the repos in /etc/yum.conf that are enabled by default.

cd /etc
mv yum.conf yum.conf.sav
sed s/enabled=1/enabled=1\\npriority=10/ /etc/yum.conf.sav > yum.conf

Or Modify /etc/yum.conf/* in sme 7.4

create priority db

#!/bin/bash

for REPO in smeaddons smecontribs smedev smeextras smeos smetest smeupdates smeupdates-testing addons base  centosplus contrib extras updates
do
 db yum_repositories setprop $REPO priority 10
 #set to 99 for testing when you want to remove priority
done

signal-event yum-modify

cp the original and add the following to the bottom of the fragment

nano -w  /etc/e-smith/templates-custom/etc/yum.smerepos.d/sme-base.repo/20repositories 

      if (exists $props{priority})
       {
           $OUT .= "priority" . '=' . $props{priority} . "\n";
       }

Usage

1. • if you install any contribs or non-sme packages using any form of --enablerepo=<xxx>, update with yum --enablerepo=* update (or separate --enablerepo=<xxx> arguments for every repo you've ever included using --enablerepo=) to make sure you get any available updates for your extra packages
   • If you get a 'missing dependancy error' from yum,
     • re-run yum manually using "--exclude <pkgname>" on the command line, replacing <pkgname> with the package that is preventing your update
     • If you suspect that the blocked update resolves a security issue, you must decide for yourself whether to compromise the original sme/centos package and force the update of the non-sme/centos package by running yum --noplugins --enablerepo=* update <pkgname>