CentOS 5 to CentOS 6 Upgrades

CentOS 5 is reaching its End of Life, and it will no longer be receiving updates as of March 31st, 2017 (source). After this date there will be no new security updates and any servers still running this OS may become vulnerable to newly discovered security issues.

HostGator recommends upgrading your OS by migrating your data to a new server that has up to date software. To upgrade to a new server with a current operating system:

  1. Purchase a new VPS or Dedicated server which matches the package level of your existing server.
  2. Once the server is provisioned, fill out the transfer form for assistance with migrating:

Given the end of security updates for CentOS 5, HostGator recommends making this change as soon as possible.


  1. CentOS 7 is currently available for install on Dedicated Servers.
  2. All new servers come with CentOS 6 so you do not need to make any special requests.
  3. PHP 5.5, 5.6 and 7.0 are installed by default and supported, PHP 5.4 can potentially be installed through EasyApache4 though is inadvisable as it's an older PHP version. PHP 5.2 and 5.3 can not be installed and as such sites requiring those PHP versions would need to be updated/brought in line with newer PHP coding.
  4. HostGator is able to install newer versions of PHP on older servers so that scripts can be tested prior to a migration.
  5. The migration process will also provide you with a way to review your sites before updating your DNS.
    For further information please see the following article:
    How Do I Change My Hosts File?