/etc/yum.conf

[main]
gpgcheck=1
installonly_limit=3
clean_requirements_on_remove=True
best=True
skip_if_unavailable=False
proxy=http://you_example.com
timeout=120
retries=20
exclude=*release*
exclude=kernel*

Related

• /etc/yum/vars/releasever

See also

• YUM, [ install | update | upgrade | search | repolist | list| updateinfo | utils | config-manager | /etc/yum.conf ], /etc/yum/vars/releasever