18 lines
612 B
Markdown
18 lines
612 B
Markdown
---
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title: "Migrate a data volume"
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date: 2018-01-30
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description: How to migrate a data volume between two hosts
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tags:
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- docker
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- linux
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---
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## The command
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Here is how to migrate a data volume between two of your hosts. A rsync of the proper `/var/lib/docker/volumes` subfolder would work just as well, but here is a fun way to do it with docker and pipes :
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{{< highlight sh >}}
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export VOLUME=tiddlywiki
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export DEST=10.1.0.242
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docker run --rm -v $VOLUME:/from alpine ash -c "cd /from ; tar -cpf - . " \
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| ssh $DEST "docker run --rm -i -v $VOLUME:/to alpine ash -c 'cd /to ; tar -xfp - ' "
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{{< /highlight >}}
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