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Chapter 3. Configuring YUM
The configuration information for YUM and related utilities is stored in the /etc/yum.conf
file. This file contains a mandatory [main]
section that you can use to set YUM options that have global effect.
3.1. Viewing the current YUM configurations
The [main]
section in the /etc/yum.conf
file contains only the settings that have been explicitly set. However, you can display all settings of the [main]
section, including the ones that have not been set and which, therefore, use their default values.
Procedure
Display the global
YUM
configuration:# yum config-manager --dump
Additional resources
-
dnf.conf(5)
man page on your system
3.2. Setting YUM main options
The /etc/yum.conf
configuration file contains one [main]
section. The key-value pairs in this section affect how YUM operates and treats repositories.
Procedure
-
Edit the
/etc/yum.conf
file. -
Update the
[main]
section according to your requirements. - Save the changes.
Additional resources
-
The
[main] OPTIONS
andOPTIONS FOR BOTH [main] AND REPO
sectiona in thednf.conf(5)
man page on you system
3.3. Enabling and disabling YUM plug-ins
In the YUM tool, plug-ins are loaded by default. However, you can influence which plug-ins YUM loads.
Disable all plug-ins only for diagnosing a potential problem. YUM requires certain plug-ins, such as product-id
and subscription-manager
, and disabling them causes Red Hat Enterprise Linux to not be able to install or update software from the Content Delivery Network (CDN).
Procedure
Use one of the following methods to influence how YUM uses plug-ins:
To enable or disable loading of YUM plug-ins globally, add the
plugins
parameter to the[main]
section of the/etc/dnf/dnf.conf
file.-
Set
plugins=1
(default) to enable loading of all YUM plug-ins. -
Set
plugins=0
to disable loading of all YUM plug-ins.
-
Set
-
To disable a particular plug-in, add
enabled=False
to the[main]
section in the/etc/dnf/plugins/<plug-in_name>.conf
file. To disable all YUM plug-ins for a particular command, append the
--noplugins
option to the command. For example, to disable YUM plug-ins for a single update command, enter:# yum --noplugins update
To disable certain YUM plug-ins for a single command, append the
--disableplugin=plugin-name
option to the command. For example, to disable a certain YUM plug-in for a single update command, enter:# yum update --disableplugin=<plugin_name>
To enable certain YUM plug-ins for a single command, append the
--enableplugin=plugin-name
option to the command. For example, to enable a certain YUM plug-in for a single update command, enter:# yum update --enableplugin=<plugin_name>
3.4. Excluding packages from YUM operations
You can configure YUM to exclude packages from any YUM operation by using the excludepkgs
option. You can define excludepkgs
in the [main]
or the repository section of the /etc/yum.conf
file.
You can temporarily disable excluding the configured packages from an operation by using the --disableexcludes
option.
Procedure
Exclude packages from the YUM operation by adding the following line to the
/etc/yum.conf
file:excludepkgs=<package_name_1>,<package_name_2> ...
Alternatively, use global expressions instead of package names to define packages you want to exclude. For more information, see Specifying global expressions in yum input.
Additional resources
-
dnf.conf(5)
man page on your system