save command can be used to archive a docker image which includes the Onload installation. This image can then be migrated to other servers having the following configuration:
- Docker is installed and docker service is running
- Host operating system RHEL 7
- The Onload version running on the host must be the same as the migrated image Onload version
- The target server does not need to have the same network adapter types installed.
- Create a tar file of the container image:
# docker save -o <dir path to store image>/<name of image>.tar <current name of image>
Example (store image tar file in host /tmp directory):
# docker save -o /tmp/dk-onload-201502.tar onload
- The image tar file can then be copied to the target server where it can be
loaded with the docker load command:
# docker load -i /<path to transferred file>/dk-onload-201502.tar
# docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE onload v1 303ec2d3e2b5 About an hour ago 486 MB
- Create/run a container from the transferred image.
# docker run --net=host --device=/dev/onload --device=/dev/onload_epoll --name=onload -it onload:v1 /bin/bash
When the container has been created, Onload will be running within it.Note: The directive
--device=/dev/onload_cplaneis required when used with onload-201606 and later releases.