How can I fix “cannot find a valid baseurl for repo” errors on CentOS?

Question

I finished installing CentOS 6, but when I tried running yum update I got:

[root@centos6test ~]# yum update
Loaded plugins: fastestmirror, refresh-packagekit
Determining fastest mirrors
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=i386&repo=os
error was 14: PYCURL ERROR 6 - "" Error: Cannot find a valid baseurl for repo: base

Why is that happening? How can I fix it?

Answer 1

First you need to get connected, AFAIK CentOS 6 minimal set your network device to ONBOOT=No, just do a dhclient to your network interface and you should be up and running.

Answer 2

Try adding these entries to /etc/resolv.conf:

nameserver 8.8.8.8
nameserver 8.8.4.4

Answer 3

I had the same problem yesterday and I spent hours trying to solve it. The solution ended up being simple.

Delete all the content of 'remi.repo' file and then execute

# yum update

It's done! The file's content will start the download again and be configured.

Answer 4

For me I edited the file /etc/yum.repos.d/CentOS-Base.repo and uncommented baseurl.

[base] name=CentOS-$releasever - Base mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-6