I have seen indications of periodic connectivity issues impacting Amazon's EC2 Cloud Computing architecture. Personally, I have encountered issues with connecting to Amazon's Yum repository hosts from EC2 instances. Amazon has published Outage notifications of brief connectivity and DNS failures impacting US-EAST-1 Availability zone between October 2nd and October 4th. However, my EC2 instances are within the US-WEST-2 Availability zone and I am experiencing issues today, October 4th 2014 at approximately 11:30 AM EST. For example: # yum provides seinfo Loaded plugins: amazon-id, rhui-lb epel/x86_64/filelists_db | 4.7 MB 00:00:01 rhui-REGION-rhel-server-optional/7Server/x86_64/filelists_db | 3.2 MB 00:00:00 https://rhui2-cds01.us-west-2.aws.ce.redhat.com/pulp/repos//content/dist/rhel/rhui/server/7/7Server/x86_64/os/repodata/e5ee2c196ee6525998525a2bf74bb40608dce199-filelists.sqlite.bz2: [Errno 14] HTTPS Error 404 - Not Found T