"Object" Netns "is unknown, try" IP Help ". \ n '" error

Tail-f/var/log/neutron/dhcp-agent.log

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By default, the CentOS 6.4 does not the support network namespaces. If one wants totest the new virtualization platforms (Docker, OpenStack, & Co ...) on Acentos server, all features won ' t Be available.
For OpenStack For example, Neutron won ' t work as expected, since it actuallyneeds network namespace to create networks,

Fortunately, Redhat–through RDO –provides A kernel that get this feature backported.

So, before updating the kernel, if one runs:

1	#> IP Netns List

S/he'll be presented with the following error message: Object ' Netns ' is unknown, try ' IP help '.

The following steps needs to being realized to install the new kernel andenable the network namespace feature

1 < Span style= "Font-size:13px;font-family:helvetica, Sans-serif;" >2 3

http:// rdo.fedorapeople.org/rdo-release.rpm #>  yum Install kernel iproute

And that ' s it. Really.

Now one can run

1 2	#> IP netns Add spredzy #> IP Netns List

Spredzy should get displayed.

If Everything is working one should has the following kernel and Iproutepackages installed:

1 2 3

Kernel-2.6.32-358.123.2.openstack.el6.x86_64 Kernel-firmware-2.6.32-358.123.2.openstack.el6.noarch Iproute-2.6.32-130.el6ost.netns.2.x86_64

This article is from the "zhanguo1110" blog, so be sure to keep this source http://zhanguo1110.blog.51cto.com/5750817/1535786