I looked for Kibana in the yum repository (https://packages.elastic.co/) and I don't find it.
Could anyone guide me?
It depends on the version you're using - if it's 4.6 then you'll want https://packages.elastic.co/kibana/4.6/centos. If you're looking for a 5.0.0 pre-release, it's https://artifacts.elastic.co/packages/5.x-prerelease/yum. You can find more details at https://www.elastic.co/guide/en/kibana/4.6/setup-repositories.html and selecting your version if necessary.