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6.3.5. Moving Gears Between Nodes
The
oo-admin-move command moves a gear from one node to another. Note that moving gears requires a rsync_id_rsa private key in the broker host's /etc/openshift/ directory and a matching public key in each node host's /root/.ssh/authorized_keys file as explained in the OpenShift Enterprise Deployment Guide at https://access.redhat.com/site/documentation.
A gear retains its UID when moved, therefore cross-district moves are only allowed when the destination district has the same gear UID available.
Run the
oo-admin-move command on the broker host to move a gear from one node to another:
Example 6.7. Moving a Gear from One Node to Another
# oo-admin-move --gear_uuid 3baf79139b0b449d90303464dfa8dd6f -i node2.example.com
URL: http://app3-username.example.com
Login: username
App UUID: 3baf79139b0b449d90303464dfa8dd6f
Gear UUID: 3baf79139b0b449d90303464dfa8dd6f
DEBUG: Source district uuid: NONE
DEBUG: Destination district uuid: NONE
[...]
DEBUG: Starting cartridge 'ruby-1.8' in 'app3' after move on node2.example.com
DEBUG: Fixing DNS and mongo for gear 'app3' after move
DEBUG: Changing server identity of 'app3' from 'node1.example.com' to 'node2.example.com'
DEBUG: The gear's node profile changed from medium to small
DEBUG: Deconfiguring old app 'app3' on node1.example.com after move
Successfully moved 'app3' with gear uuid '3baf79139b0b449d90303464dfa8dd6f' from 'node1.example.com' to 'node2.example.com'
