Detailed explanation of how to configure DNF proxy on Centos8

The following is the tutorial column of centos to introduce to you the Centos8 configuration DNF proxy method. I hope it will be helpful to friends in need!

##centos 8 Configuring DNF proxy method Centos 8 uses dnf instead of yum by default. The original yum configuration file (/etc/yum.conf) is linked to the dnf configuration file (/etc/dnf/dnf.conf) by default
Originally, you only need to change the yum configuration file for proxying The setting method is no longer easy to use.
Centos 8 needs to be modified as follows

cat /etc/dnf/dnf.conf[main]gpgcheck=1
installonly_limit=3
clean_requirements_on_remove=True#best=Trueproxy=http://Proxy_Ip:port
proxy_username=username
proxy_password=password

Modify /etc/rhsm/rhsm.conf (there is no need to create it yourself)

cat /etc/rhsm/rhsm.conf

proxy_hostname = Proxy_Ip
proxy_port = Port
proxy_user = Username
proxy_password = Password

After the above settings are completed, dnf may still not be available. Install, then change the source configuration.

centos 8 uses three sources by default, the locations are as follows

/etc/yum.repos.d/CentOS-AppStream.repo
/etc/yum.repos.d/CentOS-Base.repo
/etc/yum.repos.d/CentOS-Extras.repo

Each repo file has two addresses, one starting with "mirrorlist=" and the other "baseurl=", the default is "mirrorlist=" , if you still cannot use dnf after configuring the proxy, comment out the addresses starting with "mirrorlist=" in the above three files and use the addresses starting with "baseurl=".

centos 8 Configuring DNF proxy method

centos 8 uses dnf instead of yum by default, the original yum configuration file (/etc/ yum.conf) is linked to the dnf configuration file (/etc/dnf/dnf.conf) by default
The original method of simply changing the yum configuration file for proxy settings is no longer easy to use.
centos 8 needs to be modified as follows

cat /etc/dnf/dnf.conf[main]gpgcheck=1
installonly_limit=3
clean_requirements_on_remove=True#best=Trueproxy=http://Proxy_Ip:port
proxy_username=username
proxy_password=password

Modify /etc/rhsm/rhsm.conf (there is no need to create it yourself)

cat /etc/rhsm/rhsm.conf

proxy_hostname = Proxy_Ip
proxy_port = Port
proxy_user = Username
proxy_password = Password

After the above settings are completed, you may still be unable to use dnf to install, continue Come down and change the source configuration.

centos 8 uses three sources by default, the locations are as follows

/etc/yum.repos.d/CentOS-AppStream.repo
/etc/yum.repos.d/CentOS-Base.repo
/etc/yum.repos.d/CentOS-Extras.repo

Each repo file has two addresses, one starting with "mirrorlist=" and the other "baseurl=", the default is "mirrorlist=" , if you still cannot use dnf after configuring the proxy, comment out the addresses starting with "mirrorlist=" in the above three files and use the addresses starting with "baseurl=".

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