CentOS设置网络访问代理

Configuring Web Proxy on CentOS

If your internet connection is behind a web proxy, you need to configure the following on your CentOS server:

System-wide proxy settings - add the following lines to your
/etc/environment file:

# vi /etc/environment

http_proxy="http://<proxy_host>:<proxy_port>/"

https_proxy="https://<proxy_host>:<proxy_port>/"

ftp_proxy="ftp://<proxy_host>:<proxy_port>/"

no_proxy=".mylan.local,.domain1.com,host1,host2"

To apply these settings without restarting the machine run the following commands on the bash shell:

export http_proxy="http://<proxy_host>:<proxy_port>/"

export https_proxy="https://<proxy_host>:<proxy_port>/"

export ftp_proxy="ftp://<proxy_host>:<proxy_port>/"

export no_proxy=".mylan.local,.domain1.com,host1,host2"

You also need to configure yum:

# vi /etc/yum.conf

proxy=http://<proxy_host>:<proxy_port>

Save and close the file, then clear the cache used by yum with the following command:

#yum clean all

You also need to configure wget:

# vi /etc/wgetrc    or    vi ~/.wgetrc

https_proxy = http://<proxy_host>:<proxy_port>
http_proxy = http://<proxy_host>:<proxy_port>
ftp_proxy = http://<proxy_host>:<proxy_port>
proxy_user=username

proxy_password=password

You also need to configure curl:

You can make a alias in your ~/.bash_profile file :

alias curl="curl -x <proxy_host>:<proxy_port>"

Another solution is to use (maybe the better solution) the ~/.curlrc file (create it if it does not exist) :

proxy = <proxy_host>:<proxy_port>