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سلام

من داشتم kloxo نصب میکردم که تونستم یک licenes بگیرم و directadmin ر ونصب کنم

ولی زمانی که داشتم kloxo رو نصب میکردم اررور زیر رو داد

کد:
Loaded plugins: fastestmirror
base                                                     | 3.6 kB     00:00
epel/x86_64/metalink                                     |  27 kB     00:00
extras                                                   | 3.4 kB     00:00
http://download.lxcenter.org/download/update/centos-7/x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
Trying other mirror.


 One of the configured repositories failed (centos-7-7 - LxCenter Updates),
 and yum doesn't have enough cached data to continue. At this point the only
 safe thing yum can do is fail. There are a few ways to work "fix" this:

     1. Contact the upstream for the repository and get them to fix the problem.

     2. Reconfigure the baseurl/etc. for the repository, to point to a working
        upstream. This is most often useful if you are using a newer
        distribution release than is supported by the repository (and the
        packages for the previous distribution release still work).

     3. Disable the repository, so yum won't use it by default. Yum will then
        just ignore the repository until you permanently enable it again or use
        --enablerepo for temporary usage:

            yum-config-manager --disable lxcenter-updates

     4. Configure the failing repository to be skipped, if it is unavailable.
        Note that yum will try to contact the repo. when it runs most commands,
        so will have to try and fail each time (and thus. yum will be be much
        slower). If it is a very temporary problem though, this is often a nice
        compromise:

            yum-config-manager --save --setopt=lxcenter-updates.skip_if_unavailable=true

failure: repodata/repomd.xml from lxcenter-updates: [Errno 256] No more mirrors to try.
http://download.lxcenter.org/download/update/centos-7/x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
[root@localhost tmp]# yum remove kloxo
Loaded plugins: fastestmirror
No Match for argument: kloxo
No Packages marked for removal
[root@localhost tmp]# yum remove kloxo
Loaded plugins: fastestmirror
No Match for argument: kloxo
No Packages marked for removal
[root@localhost tmp]# yum -y install flex
Loaded plugins: fastestmirror
base                                                     | 3.6 kB     00:00
epel/x86_64/metalink                                     |  27 kB     00:00
extras                                                   | 3.4 kB     00:00
http://download.lxcenter.org/download/update/centos-7/x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found
Trying other mirror.


 One of the configured repositories failed (centos-7-7 - LxCenter Updates),
 and yum doesn't have enough cached data to continue. At this point the only
 safe thing yum can do is fail. There are a few ways to work "fix" this:

     1. Contact the upstream for the repository and get them to fix the problem.

     2. Reconfigure the baseurl/etc. for the repository, to point to a working
        upstream. This is most often useful if you are using a newer
        distribution release than is supported by the repository (and the
        packages for the previous distribution release still work).

     3. Disable the repository, so yum won't use it by default. Yum will then
        just ignore the repository until you permanently enable it again or use
        --enablerepo for temporary usage:

            yum-config-manager --disable lxcenter-updates

     4. Configure the failing repository to be skipped, if it is unavailable.
        Note that yum will try to contact the repo. when it runs most commands,
        so will have to try and fail each time (and thus. yum will be be much
        slower). If it is a very temporary problem though, this is often a nice
        compromise:

            yum-config-manager --save --setopt=lxcenter-updates.skip_if_unavailable=true

failure: repodata/repomd.xml from lxcenter-updates: [Errno 256] No more mirrors to try.
http://download.lxcenter.org/download/update/centos-7/x86_64/repodata/repomd.xml: [Errno 14] HTTP Error 404 - Not Found


الان هر کاری که میکنم و هرچیزی (دایرکت ادمین ) اررور بالا رو میده و اجازه نصب نمیده

چطور مشکل بالا رو حل کنم
سرور رو حذف کنید دوباره بسازید و دایرکت نصب کنید.