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Yum provides plugins that extend and enhance its operations.
Certain plugins are installed by default. Yum always informs you
which plugins, if any, are loaded and active whenever you call any
yum command:
~]# yum info yum
Loaded plugins: presto, refresh-packagekit, security
[output truncated]
Note that the plugin names which follow Loaded plugins
are the names you can provide to the --disableplugins=<plugin_name>
option.
plugins= is present in the
[main] section of /etc/yum.conf,
and that its value is set to 1:
plugins=1You can disable all plugins by changing this line to
plugins=0.
Yum services. In particular, rhnplugin
enables connecting to Red Hat Network, and the security
plugin allows system administrators to easily update the system with (sometimes
critical) security updates. Disabling plugins globally is provided as a convenience
option, and is generally only recommended when diagnosing a potential problem with
Yum.
Every installed plugin has its own configuration file in the
/etc/yum/pluginconf.d/ directory. You can set plugin-specific
options in these files. For example, here is the security plugin's
security.conf configuration file:
[main] enabled=1Plugin configuration files always contain a
[main]
section (similar to Yum's /etc/yum.conf
file) in which there is (or you can place if it is missing) an
enabled= option that controls whether the plugin is
enabled when you run yum commands.
If you disable all plugins by setting enabled=0
in /etc/yum.conf, then all plugins are disabled regardless
of whether they are enabled in their individual configuration files.
yum command, use the --noplugins
option.
If you simply want to disable one or more Yum plugins for a
single yum command, then you can add the
--disableplugin=<plugin_name> option to the command:
yum update --disableplugin=presto
The plugin names you provide to the --disableplugin=
option are the same names listed after the Loaded plugins:
line in the output of any yum command. You can disable
multiple plugins by separating their names with commas. In addition, you can match
multiple similarly-named plugin names or simply shorten long ones by using glob
expressions: --disableplugin=presto,refresh-pack*.
yum-plugin-<plugin_name>
package-naming convention, but not always: the package which provides the
presto plugin is named yum-presto,
for example. You can install a Yum plugin in the same way you install
other packages:
yum installyum-downloadonly
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I would like to only download the packages via yum and not install/update them. How do I download a RPM package using yum command under CentOS Enterprise Linux server 5.x or RHEL 5.x systems?You need to install plugin called yum-downloadonly. This plugin adds a --downloadonly flag to yum so that yum will only download the packages and not install/update them. Following options supported by this plugin:
[a] --downloadonly : don't update, just download a rpm file
[b] --downloaddir=/path/to/dir : specifies an alternate directory to store packages such as /tmpPlease note following instructions are only tested on CentOS server but should work with RHN and RHEL without any problem.
How do I download a RPM package only from RHN or CentOS mirror, without installing it?
Download httpd package but don't install/update, enter:
# yum update httpd -y --downloadonly
By default package will by downloaded and stored in /var/cache/yum/ directory. But, you can specifies an alternate directory to store packages such as /opt, enter:# yum update httpd -y --downloadonly --downloaddir=/opt
Sample output:yum install httpd -y --downloadonly Loading "downloadonly" plugin Loading "fastestmirror" plugin Loading "security" plugin Loading mirror speeds from cached hostfile * base: centos.mirrors.mypsh.com * updates: mirror.steadfast.net * addons: mirrors.gigenet.com * extras: holmes.umflint.edu Setting up Install Process Parsing package install arguments Resolving Dependencies --> Running transaction check ---> Package httpd.i386 0:2.2.3-11.el5_1.centos.3 set to be updated filelists.xml.gz 100% |=========================| 2.8 MB 00:03 filelists.xml.gz 100% |=========================| 681 kB 00:11 filelists.xml.gz 100% |=========================| 122 kB 00:00 filelists.xml.gz 100% |=========================| 150 B 00:00 --> Finished Dependency Resolution Dependencies Resolved ============================================================================= Package Arch Version Repository Size ============================================================================= Installing: httpd i386 2.2.3-11.el5_1.centos.3 base 1.1 M Transaction Summary ============================================================================= Install 1 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 1.1 M Downloading Packages: (1/1): httpd-2.2.3-11.el5 100% |=========================| 1.1 MB 00:01 exiting because --downloadonly specifiedTo see downloaded file, enter:
# ls -l /opt/*.rpm
Sample output:-rw-r--r-- 1 root root 1116426 Jan 17 03:36 /opt/httpd-2.2.3-11.el5_1.centos.3.i386.rpm -rw-r--r-- 1 root root 83452 Oct 2 2007 /opt/lighttpd-fastcgi-1.4.18-1.el5.rf.i386.rpm -rw-r--r-- 1 root root 635045 Oct 20 2007 /opt/psad-2.1-1.i386.rpmMethod # 2: yum-utils.noarch Package
yum-utils is a collection of utilities and examples for the yum package manager. It includes utilities by different authors that make yum easier and more powerful to use. These tools include: debuginfo-install, package-cleanup, repoclosure, repodiff, repo-graph, repomanage, repoquery, repo-rss, reposync, repotrack, verifytree, yum-builddep, yum-complete-transaction, yumdownloader, yum-debug-dump and yum-groups-manager.
# yum -y install yum-utils.noarchNow use the yumdownloader command which is a program for downloading RPMs from Yum repositories. Type the following command to download httpd rpm file:
# yumdownloader httpd
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History:
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Last modified: March 12, 2019
