Installation centreon

Bonjour,

Je souhaite installer centreon, je suivie ce tuto:

http://en.doc.centreon.com/Setup:Pre...os/Fedora/RHEL

j'ai fait les deux commandes suivantes :

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CODE]# wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.1-1.el5.rf.x86_64.rpm # wget http://dag.wieers.com/rpm/packages/RPM-GPG-KEY.dag.txt   # rpm --import RPM-GPG-KEY.dag.txt # rpm -Uvh rpmforge-release-0.5.1-1.el5.rf.x86_64.rpm

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[/CODE]
ensuite j'ai fait

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yum update

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Mais voici ce que j'ai eu comme erreur !

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Could not retrieve mirrorlist http://apt.sw.be/redhat/el5/en/mirrors-rpmforge error was [Errno 4] IOError: <urlopen error (-2, 'Name or service not known')> http://apt.sw.be/redhat/el5/en/x86_64/rpmforge/repodata/repomd.xml: [Errno 4] IOError: <urlopen error (-2, ' Name or service not known')> Trying other mirror. Error: Cannot retrieve repository metadata (repomd.xml) for repository: rpmforge. Please verify its path and try again Help me please

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