Provided by: yum_3.2.25-1ubuntu2_all bug

NAME

       yum.conf - Configuration file for yum(8).

DESCRIPTION

       Yum uses a configuration file at /etc/yum/yum.conf.

       Additional  configuration  files  are  also  read from the directories set by the reposdir
       option (default is  `/etc/yum/repos.d').   See  the  reposdir  option  below  for  further
       details.

PARAMETERS

       There  are  two  types  of sections in the yum configuration file(s): main and repository.
       Main defines all global configuration options. There should be only one main section.  The
       repository section(s) define the configuration for each repository/server. There should be
       one or more repository sections.

[main] OPTIONS

       The [main] section must exist for yum  to  do  anything.  It  consists  of  the  following
       options:

              cachedir  Directory  where  yum should store its cache and db files. The default is
              `/var/cache/yum'.

              persistdir Directory where yum should store information that  should  persist  over
              multiple runs. The default is `/var/lib/yum'.

              keepcache  Either  `1'  or  `0'.  Determines  whether or not yum keeps the cache of
              headers and packages after successful installation.  Default is '1' (keep files)

              reposdir A list of directories where yum should look for .repo files  which  define
              repositories  to  use.  Default  is `/etc/yum/repos.d'. Each file in this directory
              should contain one or  more  repository  sections  as  documented  in  [repository]
              options   below.   These   will   be   merged  with  the  repositories  defined  in
              /etc/yum/yum.conf to form the complete set of repositories that yum will use.

              debuglevel Debug message output level. Practical range is 0-10. Default is `2'.

              errorlevel Error message output level. Practical range is 0-10. Default is `2'.

              logfile Full directory and file name for where yum should write its log file.

              gpgcheck Either `1' or `0'. This tells yum whether or not it should perform  a  GPG
              signature  check  on  packages.  When this is set in the [main] section it sets the
              default for all repositories. This option also determines whether or not an install
              of  a  package  from a local RPM file will be GPG signature checked. The default is
              `0'.

              repo_gpgcheck Either `1' or `0'. This tells yum whether or not it should perform  a
              GPG signature check on the repodata. When this is set in the [main] section it sets
              the default for all repositories. The default is `0'.

              skip_broken Either `1' or `0'. Resolve depsolve problems by removing packages  that
              are causing problems from the transaction.

              assumeyes Either `1' or `0'. Determines whether or not yum prompts for confirmation
              of critical actions. Default is `0' (do prompt).
              Command-line option: -y

              alwaysprompt Either `1' or `0'. Without  this  option,  yum  will  not  prompt  for
              confirmation  when the list of packages to be installed exactly matches those given
              on the command line. Unless assumeyes is enabled, it will still prompt for  package
              removal,  or when additional packages need to be installed to fulfill dependencies.
              Default is `1'.

              tolerant Either `1' or `0'. If enabled, then yum will be tolerant of errors on  the
              command  line  with regard to packages. For example: if you request to install foo,
              bar and baz and baz is installed; yum won't  error  out  complaining  that  baz  is
              already installed. Default to `0' (not tolerant).
              Command-line option: -t

              exclude  List  of  packages  to  exclude from updates or installs. This should be a
              space separated list.  Shell globs using wildcards (eg. * and ?) are allowed.

              exactarch Either `1' or `0'. Set  to  `1'  to  make  yum  update  only  update  the
              architectures  of  packages that you have installed. ie: with this enabled yum will
              not install an i686 package to update an i386 package. Default is `1'.

              installonlypkgs List of packages that should only ever be installed, never updated.
              Kernels  in  particular  fall  into  this category. Defaults to kernel, kernel-smp,
              kernel-bigmem, kernel-enterprise, kernel-debug, kernel-unsupported.

              installonly_limit Number of packages listed in installonlypkgs to keep installed at
              the  same  time. Setting to 0 disables this feature. Default is '0'. Note that this
              functionality used to be in  the  "installonlyn"  plugin,  where  this  option  was
              altered  via.  tokeep.   Note  that  as of version 3.2.24, yum will now look in the
              yumdb for a installonly attribute on  installed  packages.  If  that  attribute  is
              "keep", then they will never be removed.

              kernelpkgnames List of package names that are kernels. This is really only here for
              the updating of kernel packages and should be removed out in the yum 2.1 series.

              showdupesfromrepos Either `0' or `1'. Set to `1' if you wish to show any  duplicate
              packages from any repository, from package listings like the info or list commands.
              Set to `0' if you want only  to  see  the  newest  packages  from  any  repository.
              Default is `0'.

              obsoletes  This option only has affect during an update. It enables yum's obsoletes
              processing logic. Useful when doing distribution level upgrades. See also  the  yum
              upgrade command documentation for more details (yum(8)).  Default is `true'.
              Command-line option: --obsoletes

              overwrite_groups  Either  `0'  or  `1'. Used to determine yum's behaviour if two or
              more repositories offer the package groups with the same name. If  overwrite_groups
              is  `1'  then  the  group packages of the last matching repository will be used. If
              overwrite_groups is `0' then the groups from  all  matching  repositories  will  be
              merged together as one large group.

              enable_group_conditionals  Either `0' or `1'. Determines whether yum will allow the
              use of conditionals packages. Default is `1' (package conditionals are allowed).

              group_package_types List of the following: optional, default, mandatory. Tells  yum
              which  type  of packages in groups will be installed when 'groupinstall' is called.
              Default is: default, mandatory

              installroot Specifies an alternative installroot, relative to  which  all  packages
              will be installed.
              Command-line option: --installroot

              distroverpkg   The   package  used  by  yum  to  determine  the  "version"  of  the
              distribution. This can be any installed package. Default is  `redhat-release'.  You
              can see what provides this manually by using: "yum whatprovides redhat-release".

              diskspacecheck  Either  `0'  or  `1'.  Set  this to `0' to disable the checking for
              sufficient diskspace before a RPM transaction is run. Default is `1'  (perform  the
              check).

              tsflags  Comma  or  space  separated  list  of transaction flags to pass to the rpm
              transaction set. These include 'noscripts',  'notriggers',  'nodocs',  'test',  and
              'repackage'.  You can set all/any of them. However, if you don't know what these do
              in the context of an rpm transaction set you're best leaving it alone.  Default  is
              an empty list.

              recent  Number  of  days  back to look for `recent' packages added to a repository.
              Used by the list recent command. Default is `7'.

              retries Set the number of times any attempt to retrieve a file should retry  before
              returning an error. Setting this to `0' makes yum try forever. Default is `10'.

              keepalive Either `0' or `1'. Set whether HTTP keepalive should be used for HTTP/1.1
              servers that support it. This can improve transfer speeds by using  one  connection
              when downloading multiple files from a repository. Default is `1'.

              timeout  Number  of seconds to wait for a connection before timing out. Defaults to
              30 seconds. This may be too short of a time for extremely overloaded sites.

              http_caching Determines how upstream HTTP caches are instructed to handle any  HTTP
              downloads that Yum does. This option can take the following values:

              `all' means that all HTTP downloads should be cached.

              `packages'  means  that  only  RPM  package  downloads  should  be  cached (but not
              repository metadata downloads).

              `none' means that no HTTP downloads should be cached.

              The default is `all'. This is  recommended  unless  you  are  experiencing  caching
              related  issues.  Try  to  at  least  use `packages' to minimize load on repository
              servers.

              throttle Enable bandwidth throttling for downloads. This option can be expressed as
              a  absolute data rate in bytes/sec. An SI prefix (k, M or G) may be appended to the
              bandwidth value (eg. `5.5k' is 5.5 kilobytes/sec, `2M' is 2 Megabytes/sec).

              Alternatively, this option can specify the percentage of  total  bandwidth  to  use
              (eg.  `60%').  In  this  case  the  bandwidth  option should be used to specify the
              maximum available bandwidth.

              Set to `0' to disable bandwidth throttling. This is the default.

              bandwidth Use to specify the maximum available network bandwidth  in  bytes/second.
              Used with the throttle option (above). If throttle is a percentage and bandwidth is
              `0' then bandwidth throttling will be disabled. If throttle is expressed as a  data
              rate  (bytes/sec)  then  this  option  is  ignored.  Default  is  `0' (no bandwidth
              throttling).

              sslcacert Path to  the  directory  containing  the  databases  of  the  certificate
              authorities  yum  should  use  to  verify SSL certificates. Defaults to none - uses
              system default

              sslverify Boolean - should yum verify SSL certificates/hosts at  all.  Defaults  to
              True

              sslclientcert  Path  to  the  SSL  client  certificate yum should use to connect to
              repos/remote sites Defaults to none.

              sslclientkey Path to the SSL client key yum should use to connect  to  repos/remote
              sites Defaults to none.

              history_record  Boolean  - should yum record history entries for transactions. This
              takes some disk space, and some extra time in the transactions. But it  allows  how
              to  know a lot of information about what has happened before, and display it to the
              user with the history info/list/summary commands. yum  also  provides  the  history
              undo/redo commands. Defaults to True.

              history_record_packages  This is a list of package names that should be recorded as
              having helped the transaction. yum plugins have an API to add themselves  to  this,
              so  it should not normally be necessary to add packages here. Not that this is also
              used for the packages to look for in --version. Defaults to rpm, yum, yum-metadata-
              parser.

              commands List of functional commands to run if no functional commands are specified
              on the command line (eg. "update foo bar baz quux").  None  of  the  short  options
              (eg. -y, -e, -d) are accepted for this option.

              syslog_ident XXX not implemented yet

              syslog_facility XXX not implemented yet

              proxy URL to the proxy server that yum should use.

              proxy_username username to use for proxy

              proxy_password password for this proxy

              plugins  Either `0' or `1'. Global switch to enable or disable yum plugins. Default
              is `0' (plugins disabled). See the PLUGINS section  of  the  yum(8)  man  for  more
              information on installing yum plugins.

              pluginpath  A list of directories where yum should look for plugin modules. Default
              is `/usr/share/yum-plugins' and `/usr/lib/yum-plugins'.

              pluginconfpath A list of directories where yum should look for plugin configuration
              files.  Default is `/etc/yum/pluginconf.d'.

              metadata_expire  Time (in seconds) after which the metadata will expire. So that if
              the current metadata downloaded is less than this many seconds old  then  yum  will
              not  update  the  metadata  against  the  repository.   If you find that yum is not
              downloading information on updates as often as you would like lower  the  value  of
              this  option.  You can also change from the default of using seconds to using days,
              hours or minutes by appending a d, h or m respectively.  The default is 1.5  hours,
              to  compliment  yum-updatesd  running  once an hour.  It's also possible to use the
              word "never", meaning that the metadata will never expire. Note that when  using  a
              metalink  file  the  metalink  must  always  be  newer  than  the  metadata for the
              repository, due to the validation, so this timeout also  applies  to  the  metalink
              file.

              mirrorlist_expire  Time (in seconds) after which the mirrorlist locally cached will
              expire.  If the current mirrorlist is less than this many seconds old then yum will
              not  download  another  copy  of  the  mirrorlist,  it has the same extra format as
              metadata_expire.  If you find that yum is not downloading the mirrorlists as  often
              as you would like lower the value of this option.

              mdpolicy  You can select from different metadata download policies depending on how
              much data you want to  download  with  the  main  repository  metadata  index.  The
              advantages  of  downloading more metadata with the index is that you can't get into
              situations where you need to use that metadata later  and  the  versions  available
              aren't  compatible  (or  the  user  lacks  privileges)  and that if the metadata is
              corrupt in any way yum will revert to the previous metadata.

              `instant' - Just download the new metadata index, this is roughly what  yum  always
              did, however it now does some checking on the index and reverts if it classifies it
              as bad.

              `group:primary' - Download the primary metadata with the index. This contains  most
              of  the  package  information  and so is almost always required anyway. This is the
              default.

              `group:small' - With the primary also download the  updateinfo  metadata,  this  is
              required  for  yum-security  operations  and it also used in the graphical clients.
              This file also tends to be significantly smaller than most others.

              `group:main' - With the primary and updateinfo download the filelists metadata  and
              the group metadata. The filelists data is required for operations like "yum install
              /bin/bash", and also some dependency resolutions require it. The group data is used
              in some graphical clients and for group operations like "yum grouplist Base".

              `group:all' - Download all metadata listed in the index, currently the only one not
              listed above is the other metadata, which contains the changelog information  which
              is used by yum-changelog. This is what "yum makecache" uses.

              multilib_policy  Can  be  set  to  'all'  or 'best'. All means install all possible
              arches for any package you want to install. Therefore yum install foo will  install
              foo.i386  and foo.x86_64 on x86_64, if it is available. Best means install the best
              arch for this platform, only.

              bugtracker_url URL where bugs should be  filed  for  yum.  Configurable  for  local
              versions or distro-specific bugtrackers.

              color  Display  colorized  output  automatically, depending on the output terminal,
              always (using ANSI codes) or never.  Command-line option: --color

              color_list_installed_older The colorization/highlighting for packages in  list/info
              installed  which are older than the latest available package with the same name and
              arch.  Default is `bold'.  Possible values are a comma separated  list  containing:
              bold,  blink,  dim,  reverse,  underline,  fg:black,  fg:red,  fg:green, fg:yellow,
              fg:blue, fg:magenta, fg:cyan,  fg:white,  bg:black,  bg:red,  bg:green,  bg:yellow,
              bg:blue, bg:magenta, bg:cyan, bg:white.

              color_list_installed_newer  The colorization/highlighting for packages in list/info
              installed which are newer than the latest available package with the same name  and
              arch.   Default  is  `bold,yellow'.   See  color_list_installed_older  for possible
              values.

              color_list_installed_reinstall  The  colorization/highlighting  for   packages   in
              list/info  installed which is the same version as the latest available package with
              the same name and arch.  Default is `normal'.  See  color_list_installed_older  for
              possible values.

              color_list_installed_extra  The colorization/highlighting for packages in list/info
              installed which has no available package with the same name and arch.   Default  is
              `bold,red'.  See color_list_installed_older for possible values.

              color_list_available_upgrade   The   colorization/highlighting   for   packages  in
              list/info available which is an upgrade for the latest installed package  with  the
              same  name  and  arch.  Default is `bold,blue'.  See color_list_installed_older for
              possible values.

              color_list_available_downgrade  The  colorization/highlighting  for   packages   in
              list/info  available which is a downgrade for the latest installed package with the
              same name and arch.  Default is  `dim,cyan'.   See  color_list_installed_older  for
              possible values.

              color_list_available_install   The   colorization/highlighting   for   packages  in
              list/info available which has no installed package with the  same  name  and  arch.
              Default is `normal'.  See color_list_installed_older for possible values.

              color_list_available_reinstall   The   colorization/highlighting  for  packages  in
              list/info available which is the same version as the  installed  package  with  the
              same     name     and     arch.     Default    is    `bold,underline,green.     See
              color_list_installed_older for possible values.

              color_search_match  The  colorization/highlighting  for  text  matches  in  search.
              Default is `bold'.  See color_list_installed_older for possible values.

              color_update_installed  The  colorization/highlighting for packages in the "updates
              list" which are installed. The updates list is what is printed when  you  run  "yum
              update",  "yum list updates", "yum list obsoletes" and "yum check-update".  Default
              is `normal'.  See color_list_installed_older for possible values.

              color_update_local The colorization/highlighting for packages in the "updates list"
              which are already downloaded. The updates list is what is printed when you run "yum
              update", "yum list updates", "yum list obsoletes" and "yum check-update".   Default
              is `bold'.  See color_list_installed_older for possible values.

              color_update_remote  The  colorization/highlighting  for  packages  in the "updates
              list" which need to be downloaded. The updates list is what is printed when you run
              "yum  update",  "yum  list  updates",  "yum list obsoletes" and "yum check-update".
              Default is `normal'.  See color_list_installed_older for possible values.

[repository] OPTIONS

       The repository section(s) take the following form:

              Example: [repositoryid]
              name=Some name for this repository
              baseurl=url://path/to/repository/

              repositoryid Must be a unique name for each repository, one word.

              name A human readable string describing the repository.

              baseurl Must be a URL to  the  directory  where  the  yum  repository's  `repodata'
              directory lives. Can be an http://, ftp:// or file:// URL. You can specify multiple
              URLs in one baseurl statement. The best way to do this is like this:
              [repositoryid]
              name=Some name for this repository
              baseurl=url://server1/path/to/repository/
                      url://server2/path/to/repository/
                      url://server3/path/to/repository/

              If you list more than one baseurl= statement in a repository you will find yum will
              ignore  the  earlier  ones  and  probably act bizarrely. Don't do this, you've been
              warned.

              You can use HTTP basic auth by prepending "user:password@" to the  server  name  in
              the baseurl line.  For example: "baseurl=http://user:passwd@example.com/".

              metalink  Specifies  a URL to a metalink file for the repomd.xml, a list of mirrors
              for the  entire  repository  are  generated  by  converting  the  mirrors  for  the
              repomd.xml  file to a baseurl. The metalink file also contains the latest timestamp
              from the data in the repomd.xml, the length of the repomd.xml  and  checksum  data.
              This  data  is  checked  against  any  downloaded  repomd.xml  file  and all of the
              information from the metalink file must match. This can be used instead of or  with
              the  baseurl option. Substitution variables, described below, can be used with this
              option. This option disables the mirrorlist option.   As  a  special  hack  is  the
              mirrorlist  URL contains the word "metalink" then the value of mirrorlist is copied
              to metalink (if metalink is not set).

              mirrorlist Specifies a URL to a file containing a list of  baseurls.  This  can  be
              used  instead  of  or  with  the  baseurl option. Substitution variables, described
              below, can be used with this option.  As a  special  hack  is  the  mirrorlist  URL
              contains the word "metalink" then the value of mirrorlist is copied to metalink (if
              metalink is not set).

              enabled Either `1' or `0'. This tells yum whether or not use this repository.

              gpgcheck Either `1' or `0'. This tells yum whether or not it should perform  a  GPG
              signature check on the packages gotten from this repository.

              repo_gpgcheck  Either `1' or `0'. This tells yum whether or not it should perform a
              GPG signature check on the repodata from this repository.

              gpgkey A URL pointing to the ASCII-armored GPG key file for  the  repository.  This
              option  is  used if yum needs a public key to verify a package and the required key
              hasn't been imported into the RPM  database.  If  this  option  is  set,  yum  will
              automatically  import  the  key from the specified URL. You will be prompted before
              the key is installed unless the assumeyes option is set.

              Multiple URLs may be specified here in  the  same  manner  as  the  baseurl  option
              (above).  If a GPG key is required to install a package from a repository, all keys
              specified for that repository will be installed.

              exclude  Same  as  the  [main]  exclude  option  but  only  for  this   repository.
              Substitution variables, described below, are honored here.

              includepkgs  Inverse  of exclude. This is a list of packages you want to use from a
              repository. If this option lists only one package then that is all  yum  will  ever
              see  from  the  repository.  Defaults  to  an  empty list.  Substitution variables,
              described below, are honored here.

              enablegroups Either `0' or `1'. Determines  whether  yum  will  allow  the  use  of
              package groups for this repository. Default is `1' (package groups are allowed).

              failovermethod Either `roundrobin' or `priority'.

              `roundrobin'  randomly  selects  a  URL  out  of the list of URLs to start with and
              proceeds through each of them as it encounters a failure contacting the host.

              `priority'  starts  from  the  first  baseurl  listed  and   reads   through   them
              sequentially.

              failovermethod defaults to `roundrobin' if not specified.

              keepalive  Either  `1'  or  `0'.  This  tells yum whether or not HTTP/1.1 keepalive
              should be used with this repository. See the global option in  the  [main]  section
              above for more information.

              timeout Overrides the timeout option from the [main] section for this repository.

              http_caching  Overrides  the  http_caching  option from the [main] section for this
              repository.

              retries Overrides the retries option from the [main] section for this repository.

              throttle Overrides the throttle option from the [main] section for this repository.

              bandwidth  Overrides  the  bandwidth  option  from  the  [main]  section  for  this
              repository.

              sslcacert  Overrides  the  sslcacert  option  from  the  [main]  section  for  this
              repository.

              sslverify  Overrides  the  sslverify  option  from  the  [main]  section  for  this
              repository.

              sslclientcert  Overrides  the sslclientcert option from the [main] section for this
              repository.

              sslclientkey Overrides the sslclientkey option from the  [main]  section  for  this
              repository.

              metadata_expire  Overrides  the  metadata_expire option from the [main] section for
              this repository.

              mirrorlist_expire Overrides the mirrorlist_expire option from  the  [main]  section
              for this repository.

              proxy  URL  to the proxy server for this repository. Set to '_none_' to disable the
              global proxy setting for this repository. If this is unset it inherits it from  the
              global setting

              proxy_username username to use for proxy.  If this is unset it inherits it from the
              global setting

              proxy_password password for this proxy.  If this is unset it inherits it  from  the
              global setting

              cost  relative  cost  of  accessing this repository. Useful for weighing one repo's
              packages as greater/less than any other. defaults to 1000

URL INCLUDE SYNTAX

       The inclusion of external configuration files is supported for /etc/yum/yum.conf  and  the
       .repo  files  in  the  /etc/yum/repos.d  directory.  To  include  a URL, use a line of the
       following format:

       include=url://to/some/location

       The configuration file will be inserted at the position of the "include=" line.   Included
       files may contain further include lines. Yum will abort with an error if an inclusion loop
       is detected.

VARIABLES

       There are a number of variables you can use to ease  maintenance  of  yum's  configuration
       files.  They  are  available  in the values of several options including name, baseurl and
       commands.

              $releasever This will be replaced with the value of  the  version  of  the  package
              listed in distroverpkg. This defaults to the version of `redhat-release' package.

              $arch  This  will  be replaced with your architecture as listed by os.uname()[4] in
              Python.

              $basearch This will be replaced with your base architecture in yum. For example, if
              your $arch is i686 your $basearch will be i386.

              $YUM0-$YUM9 These will be replaced with the value of the shell environment variable
              of the same name. If the  shell  environment  variable  does  not  exist  then  the
              configuration file variable will not be replaced.

FILES

       /etc/yum/yum.conf
       /etc/yum/repos.d/
       /etc/yum/pluginconf.d/

SEE ALSO

       yum(8)