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add doc

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Docker-DCO-1.1-Signed-off-by: Victor Vieux <vieux@docker.com> (github: vieux)
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Victor Vieux 2014-07-10 23:50:45 +00:00
parent c04230c42b
commit e7d9854414
2 changed files with 16 additions and 4 deletions
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16
docs/sources/reference/run.md
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@ -55,7 +55,7 @@ following options.
- [Network Settings](#network-settings)
- [Clean Up (--rm)](#clean-up-rm)
- [Runtime Constraints on CPU and Memory](#runtime-constraints-on-cpu-and-memory)
- [Runtime Privilege and LXC Configuration](#runtime-privilege-and-lxc-configuration)
- [Runtime Privilege, Linux Capabilities, and LXC Configuration](#runtime-privilege-linux-capabilities-and-lxc-configuration)
## Detached vs Foreground
@ -222,8 +222,10 @@ get the same proportion of CPU cycles, but you can tell the kernel to
give more shares of CPU time to one or more containers when you start
them via Docker.
## Runtime Privilege and LXC Configuration
## Runtime Privilege, Linux Capabilities, and LXC Configuration
--cap-add: Add Linux capabilities
--cap-drop: Drop Linux capabilities
--privileged=false: Give extended privileges to this container
--lxc-conf=[]: (lxc exec-driver only) Add custom lxc options --lxc-conf="lxc.cgroup.cpuset.cpus = 0,1"
@ -242,6 +244,16 @@ host as processes running outside containers on the host. Additional
information about running with `--privileged` is available on the
[Docker Blog](http://blog.docker.com/2013/09/docker-can-now-run-within-docker/).
In addition to `--privileged` the operator can have fine grain control over the
capabilities using `--cap-add` and `--cap-drop`. By default, Docker has a default
list of capabilities that are kept. Both flags support the value `all`, so if the
operator wants to have all capabilities but `MKNOD` they could use:
$ docker run --cap-add=ALL --cap-drop=MKNOD ...
For interacting with the network stack, instead of using `--privileged` they
should use `--cap-add=NET_ADMIN` to modify the network interfaces.
If the Docker daemon was started using the `lxc` exec-driver
(`docker -d --exec-driver=lxc`) then the operator can also specify LXC options
using one or more `--lxc-conf` parameters. These can be new parameters or

4
runconfig/parse.go
View file

@ -88,8 +88,8 @@ func parseRun(cmd *flag.FlagSet, args []string, sysInfo *sysinfo.SysInfo) (*Conf
cmd.Var(&flVolumesFrom, []string{"#volumes-from", "-volumes-from"}, "Mount volumes from the specified container(s)")
cmd.Var(&flLxcOpts, []string{"#lxc-conf", "-lxc-conf"}, "(lxc exec-driver only) Add custom lxc options --lxc-conf=\"lxc.cgroup.cpuset.cpus = 0,1\"")
cmd.Var(&flCapAdd, []string{"-cap-add"}, "Add Linux capability(ies)")
cmd.Var(&flCapDrop, []string{"-cap-drop"}, "Drop Linux capability(ies)")
cmd.Var(&flCapAdd, []string{"-cap-add"}, "Add Linux capabilities")
cmd.Var(&flCapDrop, []string{"-cap-drop"}, "Drop Linux capabilities")
if err := cmd.Parse(args); err != nil {
return nil, nil, cmd, err