When I do command sudo apt update, always get belowing errors:
Err:1 http://archive.ubuntu.com/ubuntu bionic InRelease Could not connect to archive.ubuntu.com:80 (91.189.91.23). - connect (111: Connection refused) Could not connect to archive.ubuntu.com:80 (91.189.88.149). - connect (111: Connection refused) Could not connect to archive.ubuntu.com:80 (91.189.88.152). - connect (111: Connection refused) Could not connect to archive.ubuntu.com:80 (91.189.88.161). - connect (111: Connection refused) Could not connect to archive.ubuntu.com:80 (91.189.88.162). - connect (111: Connection refused) Err:2 http://archive.ubuntu.com/ubuntu bionic-updates InRelease Unable to connect to archive.ubuntu.com:http: Err:3 http://archive.ubuntu.com/ubuntu bionic-backports InRelease Unable to connect to archive.ubuntu.com:http: Err:4 http://security.ubuntu.com/ubuntu bionic-security InRelease Could not connect to security.ubuntu.com:80 (91.189.88.162). - connect (111: Connection refused) Could not connect to security.ubuntu.com:80 (91.189.91.23). - connect (111: Connection refused) Could not connect to security.ubuntu.com:80 (91.189.91.26). - connect (111: Connection refused) Could not connect to security.ubuntu.com:80 (91.189.88.149). - connect (111: Connection refused) Could not connect to security.ubuntu.com:80 (91.189.88.152). - connect (111: Connection refused) Could not connect to security.ubuntu.com:80 (91.189.88.161). - connect (111: Connection refused) Reading package lists... Done Building dependency tree Reading state information... Done All packages are up to date. W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic/InRelease Could not connect to archive.ubuntu.com:80 (91.189.91.23). - connect (111: Connection refused) Could not connect to archive.ubuntu.com:80 (91.189.88.149). - connect (111: Connection refused) Could not connect to archive.ubuntu.com:80 (91.189.88.152). - connect (111: Connection refused) Could not connect to archive.ubuntu.com:80 (91.189.88.161). - connect (111: Connection refused) Could not connect to archive.ubuntu.com:80 (91.189.88.162). - connect (111: Connection refused) W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease Unable to connect to archive.ubuntu.com:http: W: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease Unable to connect to archive.ubuntu.com:http: W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease Could not connect to security.ubuntu.com:80 (91.189.88.162). - connect (111: Connection refused) Could not connect to security.ubuntu.com:80 (91.189.91.23). - connect (111: Connection refused) Could not connect to security.ubuntu.com:80 (91.189.91.26). - connect (111: Connection refused) Could not connect to security.ubuntu.com:80 (91.189.88.149). - connect (111: Connection refused) Could not connect to security.ubuntu.com:80 (91.189.88.152). - connect (111: Connection refused) Could not connect to security.ubuntu.com:80 (91.189.88.161). - connect (111: Connection refused) W: Some index files failed to download. They have been ignored, or old ones used instead.
and I have done my proxy setting in file .bash_profile like:
function setproxy
{
export {http,ftp}_proxy=xx.yy.com:80
}
function unsetproxy
{
unset {http,ftp}_proxy
}
setproxy
and check it with command env | grep -i proxy:
kay@cn:~$ env | grep -i proxy http_proxy=xx.yy.com:80 ftp_proxy=xx.yy.com:80
At last, I found what I should do is to create an apt proxy conf file.
Apt loads all configuration files under /etc/apt/apt.conf.d. We can create a configuration specifically for our proxy there, keeping it separate from all other configurations.
Create a new configuration file named proxy.conf. sudo touch /etc/apt/apt.conf.d/proxy.conf Open the proxy.conf file in a text editor. sudo vi /etc/apt/apt.conf.d/proxy.conf Add the following line to set your HTTP proxy. Acquire::http::Proxy "http://user:[email protected]:port/"; Add the following line to set your HTTPS proxy. Acquire::https::Proxy "http://user:[email protected]:port/"; Save your changes and exit the text editor.
Your proxy settings will be applied the next time your run Apt.