zun/zun/conf/utils.py
Hongbin Lu d412de7100 Introduce rootwrap and filter
If the zun-compute process is owned by a user who doesn't have
passwordless sudo privilege, zun-compute will fail to run
privileged command (e.g. sudo privsep-helper ...).

A native solution is to grant passwordless sudo to the user
who owns the zun process, but the best practice is to leverage
Rootwrap [1], which can restrict the privilege escalation.

This patch make Zun leverage Rootwrap. In particular, it does
the following:
* Setup Rootwrap in the Zun devstack plugin
* Introduce a sample rootwrap config file
* Introduce sample rootwrap filters for executing privsep-helper
* Introduce a root helper which basically adds "sudo zun-rootwrap"
  to the beginning of the command to be execute.
* Initialize privsep to use the Zun's root helper

[1] https://wiki.openstack.org/wiki/Rootwrap

Closes-Bug: #1749342
Needed-By: I69c47d25fa53f8e08efad9daa71d2f550425a5e7
Change-Id: I3ca5d853588b3705cb6cb2410df16e16a621c030
2018-03-14 04:36:33 +00:00

32 lines
928 B
Python

# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy
# of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from oslo_config import cfg
utils_opts = [
cfg.StrOpt('rootwrap_config',
default="/etc/zun/rootwrap.conf",
help='Path to the rootwrap configuration file to use for '
'running commands as root.'),
]
def register_opts(conf):
conf.register_opts(utils_opts)
def list_opts():
return {
"DEFAULT": utils_opts
}