title: upgrade Azure OpenLogic Centos 6.7 to CentOS 7.2
body: <p>What is the best way to upgrade Azure Openlogic CentOS 6.7 to CentOS7.2 So that it has it is similar to CentOS 7.2 image.
  I did sudo yum update but it did not upgrade to the latest version. Can some provide the steps for upgrading to the latest major version</p>