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Some general information about ssh-keys is available at https://wiki.harvard.edu/confluence/display/USERDOCS/SSH+Access+to+SEAS+Hosts#SSHAccesstoSEASHosts-LoggingInUsingSSHKeys .
- Detach from home folders
The AWS server does not access your SEAS/EECS home directory.
SEAS Computing will copy your existing EECS authorized_keys file into www-aws.eecs.harvard.edu when setting up your account, but after that you will need to manage and update the data yourself.
- Different user groups
The new server will connect to SEAS ldap instead of EECS nis. Please make sure to let SEAS Computing know if multiple people need to edit your web site so we can grant those people access to connect to the new server and ensure they are in the right group to modify the files.
- New Apache software version
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The new server will have PHP 5.4 instead of PHP 5.3 on the old server. Many of the changes between these version involved the removal of deprecated features. Attempted use of those will now be a fatal error rather than a warning message.
http://php.net/manual/en/migration54.incompatible.php
- Different user groups
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If you have any question about this, please contact us at eecs-web-migration@seas.harvard.edu