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Documentation should mention label visibility restrictions

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Frederik Ring 2024-05-26 10:28:46 +02:00
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docs/how-tos/run-custom-commands.md
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@ -9,6 +9,11 @@ parent: How Tos
In certain scenarios it can be required to run specific commands before and after a backup is taken (e.g. dumping a database).
When mounting the Docker socket into the `docker-volume-backup` container, you can define pre- and post-commands that will be run in the context of the target container (it is also possible to run commands inside the `docker-volume-backup` container itself using this feature).
{: .important }
In a multi-node Swarm setup, commands can currently only be run on the node the `offen/docker-volume-backup` container is running on.
Labeled containers on other nodes are not visible to the backup command.
Such commands are defined by specifying the command in a `docker-volume-backup.[step]-[pre|post]` label where `step` can be any of the following phases of a backup lifecycle:
- `archive` (the tar archive is created)