If our CentOS server is behind a proxy we will have to configure it to access the internet, we will enable the HTTP and HTTPS ports. It is possible that our CentOS on a regular basis does not have to have internet access but for some tasks such as installing or updating through YUM it will not be necessary.
The server must be able to connect to the Internet, either by any of the usual protocols, that is, http, https and ftp. You should also be able to download files successfully using the wget command.
Configure Proxy on CentOS
We will modify several files, which are the following:
▸ /etc/yum.conf
From where you can add parameters for the use of this command.
▸ /etc/profile.d/proxy.sh
The file dedicated to general environment variables. Its usage is the same as / etc / environement of Debian.
▸ /home/usuario/.bashrc
This file contains the terminal configuration.
▸ / etc / wgetrc
Configuration file for the wget command.
First thing first we need to add the following lines to the /etc/yum.conf file.
▸We indicate address plus proxy port
▸proxy = http: //domain.o.IP: port
▸proxy_username = user-yum
▸proxy_password = password
The same with the /etc/profile.d/proxy.sh file:
▸http_proxy = http: /domain.o.IP: port
▸https_proxy = http: //domain.o.IP: port
▸ftp_proxy=http://dominio.o.IP:puerto
We modify the file /home/usuario/.bashrc
▸http_proxy = http: /domain.o.IP: port
▸https_proxy = http: //domain.o.IP: port
▸ftp_proxy = http: //domain.o.IP: port
for the wget command to work correctly we have to modify the / etc / wgetrc file
The following lines must be edited:
▸You can set the default proxies for Wget to use for http, https, and ftp.
▸They will override the value in the environment.
▸https_proxy = http://proxy.yoyodyne.com:18023/
▸http_proxy = http://proxy.yoyodyne.com:18023/
▸ftp_proxy = http://proxy.yoyodyne.com:18023/
And instead add our IP and port settings.
If our proxy has authentication we must also uncomment and modify the following lines:
▸http_proxy = http: //proxy.domain.extension: 8080 /
▸proxy_user = user
▸proxy_password = password
And that’s it, our Proxy is ready for CentOS.
