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Add "userns" to `docker info` security options output 

If user namespaces is enabled on the daemon, reveal that via docker info
by adding "userns" to the list of security options reported by the
info endpoint.

Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com>
This commit is contained in:
Phil Estes 2016-10-28 00:35:51 +02:00 committed by Tibor Vass
parent baed1a070e
commit c6c5d28828
1 changed files with 5 additions and 0 deletions
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5
docs/reference/commandline/dockerd.md
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@ -986,6 +986,11 @@ If you have a group that doesn't match the username, you may provide the `gid`
or group name as well; otherwise the username will be used as the group name
when querying the system for the subordinate group ID range.
The output of `docker info` can be used to determine if the daemon is running
with user namespaces enabled or not. If the daemon is configured with user
namespaces, the Security Options entry in the response will list "userns" as
one of the enabled security features.
### Detailed information on `subuid`/`subgid` ranges
Given potential advanced use of the subordinate ID ranges by power users, the