Hi:
What CentOS version are you using? Could you confirm that you have access to the EPEL repositories configured in your yum setup? How did you installed epel? Have you tried doing a yum clean all;yum update ? AFACT there's no updates on that server, only x86_64
You are using a repository that has problems connecting to its main sites or to its mirrors. This might be a temporary issue, repositories (especially those with few mirrors) can suffer this from time to tome.
I'm not sure what the nux-dextop repository is, but it seems to be the culprit in this case. Try disabling it either through its yum configuration file or on the command line and re-run the update.
The nux-desktop repository is some kind of replacement for rpmfusion. Its usage is quite common for RHEL/CentOS 7 users since rpmfusion does not offer packages for RHEL/CentOS 7 (yet).
You are running the 32-bit variant of CentOS 7 and have the nux-desktop repository enabled. But the nux-desktop repository is only available for the 64-bit variant of RHEL/CentOS 7. So either install the 64-bit variant of CentOS 7 instead, or disable the nux-desktop repository.
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Hi: What CentOS version are you using? Could you confirm that you have access to the EPEL repositories configured in your yum setup? How did you installed epel? Have you tried doing a
yum clean all;yum update? AFACT there's no updates on that server, only x86_64You do understand, I hope, that this is a support forum for Fedora, not CentOS. You may be better off asking at a CentOS forum.