[openstack-dev] [Fuel] Running Fuel node as non-superuser

Stanislaw Bogatkin sbogatkin at mirantis.com
Tue Nov 17 11:08:42 UTC 2015


Dmitry, I believe it should be done via package spec as a part of
installation.

On Mon, Nov 16, 2015 at 8:04 PM, Dmitry Nikishov <dnikishov at mirantis.com>
wrote:

> Hello folks,
>
> I have updated the spec, please review and share your thoughts on it:
> https://review.openstack.org/#/c/243340/
>
> Thanks.
>
> On Thu, Nov 12, 2015 at 10:42 AM, Dmitry Nikishov <dnikishov at mirantis.com>
> wrote:
>
>> Matthew,
>>
>> sorry, didn't mean to butcher your name :(
>>
>> On Thu, Nov 12, 2015 at 10:41 AM, Dmitry Nikishov <dnikishov at mirantis.com
>> > wrote:
>>
>>> Matther,
>>>
>>> I totally agree that each daemon should have it's own user which should
>>> be created during installation of the relevant package. Probably I didn't
>>> state this clear enough in the spec.
>>>
>>> However, there are security requirements in place that root should not
>>> be used at all. This means that there should be a some kind of maintenance
>>> or system user ('fueladmin'), which would have enough privileges to
>>> configure and manage Fuel node (e.g. run "sudo puppet apply" without
>>> password, create mirrors etc). This also means that certain fuel- packages
>>> would be required to have their files accessible to that user. That's the
>>> idea behind having a package which would create 'fueladmin' user and
>>> including it into other fuel- packages requirements lists.
>>>
>>> So this part of the feature comes down to having a non-root user with
>>> sudo privileges and passwordless sudo for certain commands (like 'puppet
>>> apply <path-to-host-only.pp>') for scripting.
>>>
>>> On Thu, Nov 12, 2015 at 9:52 AM, Matthew Mosesohn <
>>> mmosesohn at mirantis.com> wrote:
>>>
>>>> Dmitry,
>>>>
>>>> We really shouldn't put "user" creation into a single package and then
>>>> depend on it for daemons. If we want nailgun service to run as nailgun
>>>> user, it should be created in the fuel-nailgun package.
>>>> I think it makes the most sense to create multiple users, one for each
>>>> service.
>>>>
>>>> Lastly, it makes a lot of sense to tie a "fuel" CLI user to
>>>> python-fuelclient package.
>>>>
>>>> On Thu, Nov 12, 2015 at 6:42 PM, Dmitry Nikishov <
>>>> dnikishov at mirantis.com> wrote:
>>>>
>>>>> Stanislaw,
>>>>>
>>>>> I agree that this approch would work well. However, does Puppet allow
>>>>> managing capabilities and/or file ACLs? Or can they be easily set up when
>>>>> installing RPM package? (is there a way to specify capabilities/ACLs in the
>>>>> RPM spec file?) This doesn't seem to be supported out of the box.
>>>>>
>>>>> I'm going to research if it is possible to manage capabilities and
>>>>>  ACLs with what we have out of the box (RPM, Puppet).
>>>>>
>>>>> On Wed, Nov 11, 2015 at 4:29 AM, Stanislaw Bogatkin <
>>>>> sbogatkin at mirantis.com> wrote:
>>>>>
>>>>>> Dmitry, I propose to give needed linux capabilities
>>>>>> (like CAP_NET_BIND_SERVICE) to processes (services) which needs them and
>>>>>> then start these processes from non-privileged user. It will give you
>>>>>> ability to run each process without 'sudo' at all with well fine-grained
>>>>>> permissions.
>>>>>>
>>>>>> On Tue, Nov 10, 2015 at 11:06 PM, Dmitry Nikishov <
>>>>>> dnikishov at mirantis.com> wrote:
>>>>>>
>>>>>>> Stanislaw,
>>>>>>>
>>>>>>> I've been experimenting with 'capsh' on the 6.1 master node and it
>>>>>>> doesn't seem to preserve any capabilities when setting SECURE_NOROOT bit,
>>>>>>> even if explicitely told to do so (via either --keep=1 or
>>>>>>> "SECURE_KEEP_CAPS" bit).
>>>>>>>
>>>>>>> On Tue, Nov 10, 2015 at 11:20 AM, Dmitry Nikishov <
>>>>>>> dnikishov at mirantis.com> wrote:
>>>>>>>
>>>>>>>> Bartolomiej, Adam,
>>>>>>>> Stanislaw is correct. And this is going to be ported to master. The
>>>>>>>> goal currently is to reach an agreement on the implementation so that
>>>>>>>> there's going to be a some kinf of compatibility during upgrades.
>>>>>>>>
>>>>>>>> Stanislaw,
>>>>>>>> Do I understand correctly that you propose using something like
>>>>>>>> sucap to launch from root, switch to a different user and then drop
>>>>>>>> capabilities which are not required?
>>>>>>>>
>>>>>>>> On Tue, Nov 10, 2015 at 3:11 AM, Stanislaw Bogatkin <
>>>>>>>> sbogatkin at mirantis.com> wrote:
>>>>>>>>
>>>>>>>>> Bartolomiej, it's customer-related patches, they, I think, have to
>>>>>>>>> be done for 6.1 prior to 8+ release.
>>>>>>>>>
>>>>>>>>> Dmitry, it's nice to hear about it. Did you consider to use linux
>>>>>>>>> capabilities on fuel-related processes instead of just using non-extended
>>>>>>>>> POSIX privileged/non-privileged permission checks?
>>>>>>>>>
>>>>>>>>> On Tue, Nov 10, 2015 at 10:11 AM, Bartlomiej Piotrowski <
>>>>>>>>> bpiotrowski at mirantis.com> wrote:
>>>>>>>>>
>>>>>>>>>> We don't develop features for already released versions… It
>>>>>>>>>> should be done for master instead.
>>>>>>>>>>
>>>>>>>>>> BP
>>>>>>>>>>
>>>>>>>>>> On Tue, Nov 10, 2015 at 7:02 AM, Adam Heczko <
>>>>>>>>>> aheczko at mirantis.com> wrote:
>>>>>>>>>>
>>>>>>>>>>> Dmitry,
>>>>>>>>>>> +1
>>>>>>>>>>>
>>>>>>>>>>> Do you plan to port your patchset to future Fuel releases?
>>>>>>>>>>>
>>>>>>>>>>> A.
>>>>>>>>>>>
>>>>>>>>>>> On Tue, Nov 10, 2015 at 12:14 AM, Dmitry Nikishov <
>>>>>>>>>>> dnikishov at mirantis.com> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> Hey guys.
>>>>>>>>>>>>
>>>>>>>>>>>> I've been working on making Fuel not to rely on superuser
>>>>>>>>>>>> privileges
>>>>>>>>>>>> at least for day-to-day operations. These include:
>>>>>>>>>>>> a) running Fuel services (nailgun, astute etc)
>>>>>>>>>>>> b) user operations (create env, deploy, update, log in)
>>>>>>>>>>>>
>>>>>>>>>>>> The reason for this is that many security policies simply do not
>>>>>>>>>>>> allow root access (especially remote) to servers/environments.
>>>>>>>>>>>>
>>>>>>>>>>>> This feature/enhancement means that anything that currently is
>>>>>>>>>>>> being
>>>>>>>>>>>> run under root, will be evaluated and, if possible, put under a
>>>>>>>>>>>> non-privileged
>>>>>>>>>>>> user. This also means that remote root access will be disabled.
>>>>>>>>>>>> Instead, users will have to log in with "fueladmin" user.
>>>>>>>>>>>>
>>>>>>>>>>>> Together with Omar <gomarivera> we've put together a
>>>>>>>>>>>> blueprint[0] and a
>>>>>>>>>>>> spec[1] for this feature. I've been developing this for Fuel
>>>>>>>>>>>> 6.1, so there
>>>>>>>>>>>> are two patches into fuel-main[2] and fuel-library[3] that can
>>>>>>>>>>>> give you an
>>>>>>>>>>>> impression of current approach.
>>>>>>>>>>>>
>>>>>>>>>>>> These patches do following:
>>>>>>>>>>>> - Add fuel-admin-user package, which creates 'fueladmin'
>>>>>>>>>>>> - Make all other fuel-* packages depend on fuel-admin-user
>>>>>>>>>>>> - Put supervisord under 'fueladmin' user.
>>>>>>>>>>>>
>>>>>>>>>>>> Please review the spec/patches and let's have a discussion on
>>>>>>>>>>>> the approach to
>>>>>>>>>>>> this feature.
>>>>>>>>>>>>
>>>>>>>>>>>> Thank you.
>>>>>>>>>>>>
>>>>>>>>>>>> [0]
>>>>>>>>>>>> https://blueprints.launchpad.net/fuel/+spec/fuel-nonsuperuser
>>>>>>>>>>>> [1] https://review.openstack.org/243340
>>>>>>>>>>>> [2] https://review.openstack.org/243337
>>>>>>>>>>>> [3] https://review.openstack.org/243313
>>>>>>>>>>>>
>>>>>>>>>>>> --
>>>>>>>>>>>> Dmitry Nikishov,
>>>>>>>>>>>> Deployment Engineer,
>>>>>>>>>>>> Mirantis, Inc.
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> __________________________________________________________________________
>>>>>>>>>>>> OpenStack Development Mailing List (not for usage questions)
>>>>>>>>>>>> Unsubscribe:
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>>>>>>>>>>>>
>>>>>>>>>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> --
>>>>>>>>>>> Adam Heczko
>>>>>>>>>>> Security Engineer @ Mirantis Inc.
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> __________________________________________________________________________
>>>>>>>>>>> OpenStack Development Mailing List (not for usage questions)
>>>>>>>>>>> Unsubscribe:
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>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
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>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> __________________________________________________________________________
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>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> Dmitry Nikishov,
>>>>>>>> Deployment Engineer,
>>>>>>>> Mirantis, Inc.
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Dmitry Nikishov,
>>>>>>> Deployment Engineer,
>>>>>>> Mirantis, Inc.
>>>>>>>
>>>>>>>
>>>>>>> __________________________________________________________________________
>>>>>>> OpenStack Development Mailing List (not for usage questions)
>>>>>>> Unsubscribe:
>>>>>>> OpenStack-dev-request at lists.openstack.org?subject:unsubscribe
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>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
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>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Dmitry Nikishov,
>>>>> Deployment Engineer,
>>>>> Mirantis, Inc.
>>>>>
>>>>>
>>>>> __________________________________________________________________________
>>>>> OpenStack Development Mailing List (not for usage questions)
>>>>> Unsubscribe:
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>>>>>
>>>>>
>>>>
>>>>
>>>> __________________________________________________________________________
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>>>>
>>>
>>>
>>> --
>>> Dmitry Nikishov,
>>> Deployment Engineer,
>>> Mirantis, Inc.
>>>
>>
>>
>>
>> --
>> Dmitry Nikishov,
>> Deployment Engineer,
>> Mirantis, Inc.
>>
>
>
>
> --
> Dmitry Nikishov,
> Deployment Engineer,
> Mirantis, Inc.
>
> __________________________________________________________________________
> OpenStack Development Mailing List (not for usage questions)
> Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe
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