This depends on how you have it installed. Lets say you are using Ubuntu: There are 3 parts to your installation.

• Database
• OpenERP Installation
• Support Libraries (Python etc.)

DATABASE: You can use the OpenERP facility to backup your DB or do a dump. To dump the DB you can login as the postgres user (sudo su -; sudo postgres) pg_dump -f openerp_current.sql openerp_current (or whatever you db is called) scp openerp_current.sql new_server:/tmp

On new server login as the postgres user (sudo su -; sudo postgres) createuser -S -D -R -P openerp createdb -O openerp openerp_current psql -f /tmp/openerp_current.sql

OPENERP: There are several ways of doing this. If you know the procedure that you followed when you installed server_a then follow that. Otherwise here are a couple of suggestions.

A: If you are using a packaged OpenERP then on the new Server: apt-get install openerp_server

B: If you are using a downloaded version of openerp you can sync it from server a to server b: ssh openerp@server_a; rsync -ave ssh openerp_install/ openerp@server_b:openerp_install/ rsync -ave ssh openerp_addons/ openerp@server_b:openerp_addons/ The uid:gid of server_b may differ from server_a, therefore on server_b: sudo chown -R openerp.openerp /home/openerp

Then make sure you have you /etc/init.d/openerp-server setup and linked on server_b (update_rc.d openerp-server defaults) may help Make sure /etc/openrp-server.conf is setup on server_b

SUPPORT LIBS: There is some instruction for installing the support libraries in the openerp documentation. However you can: tail -f /var/log/openerp-server.log and see what it complains about when starting server. Then apt-get install the required lib

Enjoy