Hello I'm checking the yum updates sometimes on my 3 server but today, i'm getting same error all of my servers which running centmin Code (Text): [root@web ~]# yum clean all Yüklü eklentiler: dellsysid, fastestmirror, priorities Depolar temizleniyor: base elasticsearch-2.x epel extras mariadb pgdg95 remi-safe rpmforge updates Cleaning up everything Cleaning up list of fastest mirrors [root@web ~]# yum upgrade Yüklü eklentiler: dellsysid, fastestmirror, priorities base | 3.6 kB 00:00:00 elasticsearch-2.x | 2.9 kB 00:00:00 epel/x86_64/metalink | 29 kB 00:00:00 epel | 4.3 kB 00:00:00 extras | 3.4 kB 00:00:00 mariadb | 2.9 kB 00:00:00 pgdg95 | 3.6 kB 00:00:00 remi-safe | 2.9 kB 00:00:00 rpmforge | 1.9 kB 00:00:00 Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=updates&infra=stock error was 12: Timeout on http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=updates&infra=stock: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds') One of the configured repositories failed (Bilinmiyor), 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 <repoid> 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=<repoid>.skip_if_unavailable=true Cannot find a valid baseurl for repo: updates/7/x86_64 I think some repo's need to be updated but i don't use a global repo except centmin mod defaults. How can i fix this ?