CentOS

yum install alacarte
Loaded plugins: fastestmirror, langpacks
adobe-linux-x86_64 | 951 B 00:00:00
base | 3.6 kB 00:00:00
epel/x86_64/metalink | 21 kB 00:00:00
extras | 3.4 kB 00:00:00
google-chrome | 951 B 00:00:00
google-chrome-unstable | 951 B 00:00:00
mariadb | 2.9 kB 00:00:00
http://repo.mysql.com/yum/mysql-connect ... repomd.xml: [Errno 14] HTTP Error 404 - Not Found
Trying other mirror.
To address this issue please refer to the below knowledge base article

https://access.redhat.com/articles/1320623

If above article doesn't help to resolve this issue please create a bug on https://bugs.centos.org/



One of the configured repositories failed (MySQL Connectors Community),
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 mysql-connectors-community

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=mysql-connectors-community.skip_if_unavailable=true

failure: repodata/repomd.xml from mysql-connectors-community: [Errno 256] No more mirrors to try.
http://repo.mysql.com/yum/mysql-connect ... repomd.xml: [Errno 14] HTTP Error 404 - Not Found