Difference between revisions of "Yum-plugin-priorities"

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yum-plugin-priorities
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==Yum-plugin-priorities==
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{{Warning box|Currently under development.}}
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{{Level|Advanced}}
  
 
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.
 
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.
  
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Inspired by [[Bugzilla:4757]]
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=== Installation ===
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== Installation ==
 
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=== SME 7.x (Centos 4.x ===
 
 
  yum --enablerepo=extras install yum-plugin-priorities
 
  yum --enablerepo=extras install yum-plugin-priorities
  
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=== SME 8.x (Centos 5.x) ===
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On SME Server 8.x use (untested!)
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(untested!)
 
 
  yum --enablerepo=extras install yum-priorities
 
  yum --enablerepo=extras install yum-priorities
  
 
=== Configuration ===
 
=== Configuration ===
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==== New config files ====
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The installation of yum-plugin-priorities will create '''/etc/yum/pluginconf.d/priorities.conf''' with the following settings
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(SME 7.x): The installation of yum-plugin-priorities will create '''/etc/yum/pluginconf.d/priorities.conf''' with the following settings
 
 
  [main]
 
  [main]
 
  enabled = 1
 
  enabled = 1
 
  check_obsoletes = 1
 
  check_obsoletes = 1
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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.
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These settings tell yum to pay attention to the 'priority' setting for each repo, and to make sure the 'obsoletes' flag in a low priority repo will not result in the removal of a package from a higher-priority repo.
  
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==== Either Modify /etc/yum.conf sme 7.3====
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If you are not running SME Server 7.4, update smeserver-yum
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Now add '''priority=10''' to the repos in /etc/yum.conf that are enabled by default.
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yum update smeserver-yum
  
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cd /etc
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==== modify yum template ====
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  mv yum.conf yum.conf.sav
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cp the original and add the following to the bottom of the fragment
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  sed s/enabled=1/enabled=1\\npriority=10/ /etc/yum.conf.sav > yum.conf
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  nano -w /etc/e-smith/templates-custom/etc/yum.smerepos.d/sme-base.repo/20repositories
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+
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==== Or Modify /etc/yum.conf/* in sme 7.4 ====
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      if (exists $props{priority})
 +
        {
 +
            $OUT .= "priority" . '=' . $props{priority} . "\n";
 +
        }
  
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create priority db
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==== DB values ====
 +
Use this script to create DB priority values
 
  #!/bin/bash
 
  #!/bin/bash
 
   
 
   
Line 40: Line 39:
 
  done
 
  done
 
   
 
   
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  echo "now run"
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  signal-event yum-modify
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echo "expand-template /etc/yum.smerepos.d/sme-base.repo"
 
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add the following, to the bottom of the fragment, use templates-custom if you prefer
 
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nano -w  /etc/e-smith/templates-custom/etc/yum.smerepos.d/sme-base.repo/20repositories
 
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      if (exists $props{priority})
 
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        {
 
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            $OUT .= "priority" . '=' . $props{priority} . "\n";
 
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        }
 
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== Testing 7.3==
 
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=== Original Configuration ===
 
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yum update
 
−
 
 
−
...
 
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Transaction Summary
 
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=============================================================================
 
−
Install      0 Package(s)
 
−
Update      8 Package(s)
 
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Remove      0 Package(s)
 
−
 
 
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yum --enablerepo=dag update
 
−
 
 
−
...
 
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Transaction Summary
 
−
=============================================================================
 
−
Install    22 Package(s)
 
−
Update      80 Package(s)
 
−
Remove      0 Package(s)
 
−
 
 
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=== After modifying /etc/yum.conf ===
 
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yum update
 
−
 
 
−
...
 
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Transaction Summary
 
−
=============================================================================
 
−
Install      0 Package(s)
 
−
Update      8 Package(s)
 
−
Remove      0 Package(s)
 
−
 
 
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yum --enablerepo=dag update
 
−
 
 
−
...
 
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Error: Missing Dependency: perl(DBD::Pg) >= 1.32 is needed by package perl-DBIx-DBSchema
 
−
...
 
−
 
 
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=== To Do ===
 
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Figure out why setting priorities results in missing dependcies.
 
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I tried giving all 'sme' repos higher priority (priority=5) than the centos repos (priority=10) - same result.
 
−
 
 
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== Testing 7.4==
 
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actually 7.4rc1
 
−
 
 
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yum update (priority=99)
 
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Install      1 Package(s)       
 
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Update      26 Package(s) 
 
−
 
 
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yum update enablerepo=dag (priority=99)
 
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0 packages excluded due to repository priority protections
 
−
Install    11 Package(s)       
 
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Update      42 Package(s) 
 
  
 +
=== Usage ===
 +
* If you install any contribs or non-sme packages using any form of ''--enablerepo=<xxx>'', update with the following to make sure you get any available updates for your extra packages
 +
yum update --enablerepo=<xxx> --enablerepo=<xxx2>
 +
* If you get a ''missing dependency'' 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 Server/CentOS package and force the update of the non-SME Server/CentOS package by running
 +
yum update --enablerepo=<xxx>  --enablerepo=<xxx2> --noplugins <pkgname>
  
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yum update enablerepo=dag (priority=10)
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===References===
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496 packages excluded due to repository priority protections
 
−
Install      1 Package(s)       
 
−
Update      28 Package(s) 
 
  
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the two extra packages I installed from dag, they should be updated
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[[bugzilla:4757]]
  
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all OK
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Centos Wiki page at http://wiki.centos.org/PackageManagement/Yum/Priorities
  
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=== To Do ===
+
----
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try other priorities, ie give sme repos higher priority then centos and see what happens
+
[[Category:Howto]]
 +
[[Category:Administration]]

Latest revision as of 20:14, 24 June 2010

Yum-plugin-priorities

PythonIcon.png Skill level: Advanced
The instructions on this page may require deviations from standard procedures. A good understanding of linux and Koozali SME Server is recommended.


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.

Installation

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

On SME Server 8.x use (untested!) 

yum --enablerepo=extras install yum-priorities

Configuration

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 'obsoletes' flag in a low priority repo will not result in the removal of a package from a higher-priority repo.

If you are not running SME Server 7.4, update smeserver-yum 

yum update smeserver-yum

modify yum template

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";
       }

DB values

Use this script to create DB priority values 

#!/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

Usage

  • If you install any contribs or non-sme packages using any form of --enablerepo=<xxx>, update with the following to make sure you get any available updates for your extra packages
yum update --enablerepo=<xxx> --enablerepo=<xxx2>
  • If you get a missing dependency 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 Server/CentOS package and force the update of the non-SME Server/CentOS package by running
yum update --enablerepo=<xxx>  --enablerepo=<xxx2> --noplugins <pkgname>

References

bugzilla:4757

Centos Wiki page at http://wiki.centos.org/PackageManagement/Yum/Priorities

Retrieved from "https://wiki.koozali.org/index.php?title=Yum-plugin-priorities&oldid=15018"