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Add "userns" to docker info security options output

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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>
Upstream-commit: c6c5d28828
Component: cli
This commit is contained in:
Phil Estes
2016-10-28 00:35:51 +02:00
committed by Tibor Vass
parent 34fb473d99
commit 4f25fac5e6
1 changed files with 5 additions and 0 deletions
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5
components/cli/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