How to Migrate Variations to a New Machine

This page explains how to migrate Variations server to a new machine.

If you have any questions about or problems with the migration process, please email the Variations support list, variations-discuss@lists.sourceforge.net, or if necessary contact Chris Colvard directly (812-856-0026, cjcolvar@indiana.edu).

Important things to note about this migration:

• This migration documentation assumes Variations 6.0 or higher.
• This migration assumes that the hostnames and IPs used by the Variations server are the same used by the new machine.
• Backup the system according to your institution's practices before attempting the migration.

Migration Preparation

As dmlserv, from /home/dmlserv, do the following:

1. Create archive of the Variations filesystem: tar cvzf variations-backup.tar.gz log/ Variations-6*/
2. Create archive of the Variations content: tar cvzf content-backup.tar.gz content/
3. MySQL Databases
   • Run mysqldump --create-options -r dmllib-dump.sql --databases <LIBRARY_NAME>_DMLLIB
   • Run mysqldump --create-options -r metadata-dump.sql --databases <LIBRARY_NAME>_METADATA

If you have Variations-Web installed, then do the following as the tomcat user:

1. Create archive of Variations-Web: tar cvzf variations-web-backup.tar.gz conf/variations* logs/variations* webapps/variations*.war

Moving to New Machine

First, setup the new machine based on instructions

Then do the following as dmlserv except where noted:

1. Copy files from old system to /home/dmlserv
2. Unzip backup tar: tar xvzf variations-backup.tar.gz
3. Unzip content tar: tar xvzf content-backup.tar.gz
4. Load databases (as root):
   • mysql < /home/dmlserv/variations-dump.sql
   • mysql < /home/dmlserv/dmllib-dump.sql
5. Create a user account dmlserv and grant permissions to dmlserv (as root): mysql
   • grant all on library_name_DMLLIB.* to 'dmlserv'@'localhost';
   • grant all on library_name_METADATA.* to 'dmlserv'@'localhost';
   • Set the password for dmlserv to correspond to the value used in any configuration files:
     set password for 'dmlserv'@'localhost' = password('your-password');

6. Create a file in the dmlserv home directory named .my.cnf that contains the following:

   The password for the MySQL user dmlserv

7. Set permissions on the file to make sure that no one else can read the file:
   chmod 600 /home/dmlserv/.my.cnf
8. Change directories to the latest Variations installation: cd Variations-6.2/
9. Start Variations: bin/startVariations.sh
10. Check that everything is running: bin/checkVariations.sh . You should see output listing EXAMPLE under Databases currently running

11. Install crontab: crontab bin/crontab

    Make sure to merge any added entries to your crontab before replacing it.

Migrating Variations-Web

Prepare the system using these instructions.

Next do the following as the tomcat user:

1. Copy Variations-Web archive from old system to /usr/local/tomcat
2. Extract the contents: tar xvzf variations-web-backup.tar.gz

3. Restart tomcat and check to see that the webapps are running properly: