CentOS release 6.7 (Final)
yum update fails on the error below.
http://mirror.centos.org/centos/6/SCL/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404 Not Found" Trying other mirror. Error: Cannot retrieve repository metadata (repomd.xml) for repository: scl. Please verify its path and try again
Workaround
$ sudo yum remove centos-release-SCL $ sudo yum update # Update to CentOS 6.8 $ sudo yum install centos-release-scl $ sudo yum update