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: 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 and OPTIONS FOR BOTH [main] AND REPO sectiona in the dnf.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. Warning 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. 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: 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: 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: 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. Note 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: 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

Commands:
yum config-manager --dump
yum --noplugins update
yum update --disableplugin= <plugin_name>
yum update --enableplugin= <plugin_name>
excludepkgs= <package_name_1> , <package_name_2>