SME Server:Documentation:Technical Manual:Chapter6/de

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Kapitel 6 - Neue Software hinzufügen (Erweiterungen)

Neue Softwarepakete beinhalten bzw. basieren bevorzugt auf Paketen von RedHat EL4 und sind für den SME Server entsprechend konfiguriert. Im Namen der Pakete wird mit dem Zusatz "el4" die Familienzugehörigkeit zu RedHat EL4 signalisiert.

Erhältliche Softwarepakete

Aktuelle rpms finden Sie unter SME Contribs

Software installieren

Sie können Software für den SME Server mit der Option Software-Installation im Server-Manager installieren. Wenn Sie auf den Schalter "Einstellungen zur SW-Installtion ändern" klicken und anschließend die Option "Installation einzelner SW-Pakete" aktivieren, können Sie aus den SW-Bibliotheken RPM-Pakete installieren und deinstallieren.

Der SME Server nutzt 'yum um Software zu installieren; yum ist neuere und verbesserte Version des bekannten rpm-Befehls und verwendet "Repositories", in denen die RPM-Pakete gespeichert sind. Der große Vorteil gegenüber rpm besteht darin, das yum nicht nur Abhängigkeiten erkennen, sondern auch gleich Downloads der benötigten Pakete durchführen kann. Künftige HowTo-Anleitungen sollten das berücksichtigen und einen entsprechenden yum-Befehl integrieren, der Bezug auf das gewünschte Repository nimmt, wie z.B.:

yum --enablerepo=dag install dansguardian

Yum Repositories

Yum repositories on SME Server are to be configured by the internal configuration database. Repositories are stored in the yum_repositories database. The yum configuration file, located at /etc/yum.conf holds the actual configuration and is generated using the data in the yum_repositories database.

Installing or modifying a repository

For the syntax of modifying or adding see the examples below in the 3rd-Party Yum Repositories setup section. For more details on the configuration database and how to work with it you can have a look at the [Developers Guide]. After adding or modifying the yum_repositories database you will have to make sure you regenerate the configuration file using the following command:

Options for the yum_repositories database

The repositories for SME Server are configured using the internal yum-repositories configuration database. There are several options that can be set for every repository:

Visible yes|no - yes displays in server manager status enabled|disabled - disabled are ignored unless specified with --enablerepo= Exclude - don't fetch these rpms IncludePkgs - only fetch these rpms

3rd-Party Yum Repositories setup

This page once started as http://no.longer.valid/phpwiki/index.php/3rdPartyYumRepositories, but a newer list of repositories for SME Server is now located Category:Yum_Repository.

If you use the commands below to add 3rd party yum repositories, they will be added to the yum-repositories database, but not enabled by default, so this will not affect automatic yum upgrades. It only adds options for running yum manually. They are also set up to block you from installing RPMs that exist already in SME Server 7.0.

To reflect the changes in the database you will have to regenerate the yum.conf file:

 expand-template /etc/yum.conf

Below are a few repositories, for which the configuration can be copied to the SME Server shell to install them on your server. The lines are long, but it it so you can cut and paste into your ssh client. Also note you shouldn't enable these repositories, they should just be used at the command line with "yum install", and not with "yum upgrade".

If a site has a RPM-GPG-KEY you have to install it first with a line such as.

rpm --import http://dag.wieers.com/packages/RPM-GPG-KEY.dag.txt

Restoring Default Yum Repositories

If you have problems with your yum setup you may have entered dud repository values

remove the current values and restore the original setting with these commands

cd /home/e-smith/db/
mv yum_repositories yum_repositories.po
/etc/e-smith/events/actions/initialize-default-databases

Now you have a clean install, you can re-add 3rd party repos as described above

expand-template /etc/yum.conf

and check

yum update

Using RPMs

Since SME Server is based on CentOS, the preferred way to install software is with yum, a lot of you might be familiar with its predecessor rpm. To install an RPM already on your system you can also use yum to install:

yum localinstall /path/to/filename.rpm

To satisfy dependencies you can enable or disable other repositories using the --enablerepo or the --disablerepo option.

Using yum will run other actions such as updating server-manager menus, that rpm -Uvh will not.