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knowledge-base/KB/Linux/Server/Docker Volume Migration.md

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creation date tags
2022-09-03
docker
volume
operations
migration
  1. Stop existing deployment
  2. Create a dedicated named docker volume with docker volume create target-vol
  3. Copy existing contents
# copy
docker run -d --rm --name temp -v target-vol:/mnt alpine tail -f /dev/null
docker cp /opt/.../. temp:/mnt

# once finished
docker stop temp
  1. Adapt existing deployment
# dedicated volumes section
volumes:
  target-vol:
    external: true

# change any mount paths
	volumes:
		- target-vol:/....
  1. Adapt any backup scripts which would point to the old data host directory