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Mount propagation update to include docker config #7854

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Mar 26, 2018
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Mount propagation update to include docker config #7854

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15 changes: 15 additions & 0 deletions docs/concepts/storage/volumes.md
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Expand Up @@ -1111,6 +1111,21 @@ In addition, any volume mounts created by Containers in Pods must be destroyed
(unmounted) by the Containers on termination.
{: .caution}

### Configuration
Before mount propagation can work properly on some deployments (CoreOS,
RedHat/Centos, Ubuntu) mount share must be configured correctly in
Docker as shown below.

Edit your Docker's `systemd` service file. Set `MountFlags` as follows:
```shell
MountFlags=shared
```
Or, remove `MountFlags=slave` if present. Then restart the Docker daemon:
```shell
$ sudo systemctl daemon-reload
$ sudo systemctl restart docker
```

{% endcapture %}

{% capture whatsnext %}
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