[openstack-dev] [Fuel] Removing logs from Fuel Web UI and Nailgun

Roman Prykhodchenko me at romcheg.me
Mon Mar 14 12:02:31 UTC 2016


Folks, I’ve registered a blueprint [1] and created an etherpad document [2] where we can co-work on the spec before posting it to a formal review. Let’s cooperate to summarize what we need to do.


1. https://blueprints.launchpad.net/fuel/+spec/remove-logs-from-nailgun
2. https://etherpad.openstack.org/p/remove-logs-from_Nailgun

- romcheg

> 14 бер. 2016 р. о 09:53 Bogdan Dobrelya <bdobrelia at mirantis.com> написав(ла):
> 
> On 03/14/2016 09:38 AM, Anastasia Urlapova wrote:
>> +1 to Vitaliy, it would be nice find somewhere a details for migration.
>> And one more concern I should highlight - for some users logless UI may
>> be challenging thing.
>> The logs removing shouldn't affect the UX.
> 
> Logs will still live at the master node's /var/log/remote
> 
>> 
>> 
>> Nastya.
>> 
>> 
>> On Sat, Mar 12, 2016 at 3:08 AM, Andrew Woodward <xarses at gmail.com
>> <mailto:xarses at gmail.com>> wrote:
>> 
>>    I think we can address it by retaining deployment logs in
>>    nailgun/ui, this also removes the chicken and egg problem. after LMA
>>    is deployed it can be allowed to re-own 'logs' button on UI once
>>    it's deployed, including redirecting fuel logs there.
>> 
>>    On Fri, Mar 11, 2016 at 2:07 PM Mike Scherbakov
>>    <mscherbakov at mirantis.com <mailto:mscherbakov at mirantis.com>> wrote:
>> 
>>        We can sort out details later. In a worst case, the warning will
>>        be there in Newton too, and feature will go away only in O*
>>        release. So let's proceed with the bug..
>> 
>>        On Fri, Mar 11, 2016 at 1:02 PM Vitaly Kramskikh
>>        <vkramskikh at mirantis.com <mailto:vkramskikh at mirantis.com>> wrote:
>> 
>>            We can add the warning, but I think before we do this we
>>            should have clear migration plan. According to this thread,
>>            some parts are still not clear.
>> 
>>            2016-03-11 22:00 GMT+03:00 Mike Scherbakov
>>            <mscherbakov at mirantis.com <mailto:mscherbakov at mirantis.com>>:
>> 
>>                Deprecation warning for Fuel
>>                Mitaka: https://bugs.launchpad.net/fuel/+bug/1556244.
>> 
>> 
>>                On Fri, Mar 11, 2016 at 8:59 AM Roman Prykhodchenko
>>                <me at romcheg.me <mailto:me at romcheg.me>> wrote:
>> 
>>                    Since there are a lot of supporters for this idea,
>>                    what do you folks think about creating a BP spec
>>                    where we can describe what we should do in order to
>>                    remove logs from UI and Nailgun? I also propose to
>>                    file a bug about adding a deprecation warning to
>>                    Mitaka release of Fuel.
>> 
>> 
>>>                    11 бер. 2016 р. о 16:55 Bogdan Dobrelya
>>>                    <bdobrelia at mirantis.com
>>>                    <mailto:bdobrelia at mirantis.com>> написав(ла):
>>> 
>>>                    On 03/11/2016 04:46 PM, Mike Scherbakov wrote:
>>>>                    +1 to remove logs from Fuel UI in Fuel Newton.
>>>>                    In Fuel Mitaka we'd need to put a deprecation
>>>>                    warning somewhere.
>>> 
>>>                    I agree, there is not much sense having non
>>>                    flexible (no content
>>>                    filters) logs view in UI. LMA plugins shall cover
>>>                    this area as well.
>>> 
>>>> 
>>>> 
>>>>                    On Fri, Mar 11, 2016, 04:57 Patrick Petit
>>>>                    <ppetit at mirantis.com <mailto:ppetit at mirantis.com>
>>>>                    <mailto:ppetit at mirantis.com>> wrote:
>>>> 
>>>> 
>>>>                       On 11 March 2016 at 12:51:40, Igor Kalnitsky
>>>>                       (ikalnitsky at mirantis.com
>>>>                    <mailto:ikalnitsky at mirantis.com> <mailto:ikalnitsky at mirantis.com>)
>>>>                    wrote:
>>>> 
>>>>>                       Patrick,
>>>>> 
>>>>>                       Sorry, but I meant another question. I
>>>>>                    thought that LMA plugin should
>>>>>                       be installed in some environment before we
>>>>>                    can start use it. Is
>>>>>                       this a
>>>>>                       case? If so, it means we can't use for master
>>>>>                    node until some
>>>>>                       environment is deployed.
>>>> 
>>>>                       Right. This is the chicken and egg problem I
>>>>                    mentioned earlier...
>>>> 
>>>>                       But this is not a “problem” specific to Fuel.
>>>>                    My take on this is is
>>>>                       that ops management tooling (logging,
>>>>                    monitoring) should be
>>>>                       installed off-band before any OpenStack
>>>>                    deployment. In fact, in
>>>>                       real-world usage, we frequently get asks to
>>>>                    have the monitoring and
>>>>                       logging services of StackLight installed
>>>>                    permanently for
>>>>                       multi-enviroments. And so, one approach would
>>>>                    be to make Stacklight
>>>>                       backend services the first bits of software
>>>>                    installed by Fuel (if
>>>>                       not already there), then reconfigure Fuel to
>>>>                    hook into those
>>>>                       services and only then, enter into the regular
>>>>                    OpenStack
>>>>                       provisioning mode.
>>>> 
>>>>> 
>>>>> 
>>>>>                       On Fri, Mar 11, 2016 at 12:52 PM, Patrick Petit
>>>>>                       <ppetit at mirantis.com
>>>>>                    <mailto:ppetit at mirantis.com> <mailto:ppetit at mirantis.com>>
>>>>>                    wrote:
>>>>>> 
>>>>>>                    On 11 March 2016 at 11:34:32, Igor Kalnitsky
>>>>>>                    (ikalnitsky at mirantis.com
>>>>>>                    <mailto:ikalnitsky at mirantis.com> <mailto:ikalnitsky at mirantis.com>)
>>>>>>                    wrote:
>>>>>> 
>>>>>>                    Hey Roman,
>>>>>> 
>>>>>>                    Thank you for bringing this up. +1 from my
>>>>>>                    side, especially taking
>>>>>>                    into account the patch where we tried to solve
>>>>>>                    logrotated logs problem
>>>>>>                    [1]. It's complex and unsupportable, as well as
>>>>>>                    already existed
>>>>>>                    logview code in Nailgun.
>>>>>> 
>>>>>>                    Patrick, Simon,
>>>>>> 
>>>>>>                    Does LMA plugin support logs from master node?
>>>>>>                    Or it's designed to
>>>>>>                    watch environment's logs?
>>>>>> 
>>>>>>                    No it’s not designed specifically for
>>>>>>                    environment logs. Can be adapted to
>>>>>>                    any log format.
>>>>>> 
>>>>>>                    Would just need to write a parser like you
>>>>>>                    would with logstach when logs are
>>>>>>                    not standard.
>>>>>> 
>>>>>>                    Patrick
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>>                    Thanks,
>>>>>>                    Igor
>>>>>> 
>>>>>> 
>>>>>>                    [1]: https://review.openstack.org/#/c/243240/
>>>>>> 
>>>>>>                    On Fri, Mar 11, 2016 at 11:53 AM, Patrick Petit
>>>>>>                    <ppetit at mirantis.com
>>>>>>                    <mailto:ppetit at mirantis.com> <mailto:ppetit at mirantis.com>>
>>>>>>                    wrote:
>>>>>>>                    Fuelers,
>>>>>>> 
>>>>>>>                    As Simon said, we already have a log
>>>>>>>                    centralisation solution for MOS
>>>>>>>                    delivered as a Fuel plugins known as
>>>>>>>                    StackLight / LMA toolset. And so
>>>>>>>                    objectively, there is no need to have log
>>>>>>>                    management in Nailgun anymore.
>>>>>>>                    To
>>>>>>>                    go one step further we suggested several times
>>>>>>>                    to have a StackLight agent
>>>>>>>                    installed on the Fuel master node to also
>>>>>>>                    collect and centralise those
>>>>>>>                    logs.
>>>>>>>                    There is a little bit of a chicken and egg
>>>>>>>                    problem to resolve but I think
>>>>>>>                    it
>>>>>>>                    is worth a try to have that nailed down in the
>>>>>>>                    roadmap for Fuel 10.
>>>>>>>                    Cheers
>>>>>>>                    - Patrick
>>>>>>> 
>>>>>>> 
>>>>>>>                    On 11 March 2016 at 10:07:28, Simon Pasquier
>>>>>>>                    (spasquier at mirantis.com
>>>>>>>                    <mailto:spasquier at mirantis.com> <mailto:spasquier at mirantis.com>)
>>>>>>>                    wrote:
>>>>>>> 
>>>>>>>                    Hello Roman,
>>>>>>> 
>>>>>>>                    On Fri, Mar 11, 2016 at 9:57 AM, Roman
>>>>>>>                    Prykhodchenko <me at romcheg.me
>>>>>>>                    <mailto:me at romcheg.me> <mailto:me at romcheg.me>>
>>>>>>>                    wrote:
>>>>>>>> 
>>>>>>>>                    Fuelers,
>>>>>>>> 
>>>>>>>>                    I remember we’ve discussing this topic in our
>>>>>>>>                    couloirs before but I’d
>>>>>>>>                    like
>>>>>>>>                    to bring that discussion to a more official
>>>>>>>>                    format.
>>>>>>>> 
>>>>>>>>                    Let me state a few reasons to do this:
>>>>>>>> 
>>>>>>>>                    - Log management code in Nailgun is
>>>>>>>>                    overcomplicated
>>>>>>>>                    - Working with logs on big scale deployments
>>>>>>>>                    is barely possible given the
>>>>>>>>                    current representation
>>>>>>>>                    - Due to overcomplexity and ineffectiveness
>>>>>>>>                    of the code we always get
>>>>>>>>                    recurring bugs like [1]. That eats tons of
>>>>>>>>                    time to resolve.
>>>>>>>>                    - There are much better specialized tools,
>>>>>>>>                    say Logstash [2], that can
>>>>>>>>                    deal
>>>>>>>>                    with logs much more effectively.
>>>>>>>> 
>>>>>>>> 
>>>>>>>>                    There may be more reasons bus I think even
>>>>>>>>                    the already mentioned ones are
>>>>>>>>                    enough to think about the following proposal:
>>>>>>>> 
>>>>>>>>                    - Remove Logs tab from Fuel Web UI
>>>>>>>>                    - Remove logs support from Nailgun
>>>>>>>>                    - Create mechanism that allows to configure
>>>>>>>>                    different log management
>>>>>>>>                    software, say Logstash, Loggly, etc
>>>>>>>> 
>>>>>>>>                    - Choose a default software to install and
>>>>>>>>                    provide a plugin for it from
>>>>>>>>                    the box
>>>>>>> 
>>>>>>> 
>>>>>>>                    This is what the LMA/StackLight plugins [1][2]
>>>>>>>                    are meant for. No need to
>>>>>>>                    develop anything new.
>>>>>>> 
>>>>>>>                    And I'm +1 with the removal of log management
>>>>>>>                    from Fuel. As you said, it
>>>>>>>                    can't scale...
>>>>>>> 
>>>>>>>                    [1]
>>>>>>>                    http://fuel-plugin-lma-collector.readthedocs.org/en/latest/
>>>>>>>                    [2]
>>>>>>>                    http://fuel-plugin-elasticsearch-kibana.readthedocs.org/en/latest/
>>>>>>> 
>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>>                    References
>>>>>>>>                    1. https://bugs.launchpad.net/fuel/+bug/1553170
>>>>>>>>                    2. https://www.elastic.co/products/logstash
>>>>>>>> 
>>>>>>>> 
>>>>>>>>                    - romcheg
>>>>>>>> 
>>>>>>>> 
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>>>>>>> 
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>>>>>>> 
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>>>>>> 
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>>>>                    --
>>>>                    Mike Scherbakov
>>>>                    #mihgen
>>>> 
>>>> 
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>>>> 
>>> 
>>> 
>>>                    --
>>>                    Best regards,
>>>                    Bogdan Dobrelya,
>>>                    Irc #bogdando
>>> 
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>>                --
>>                Mike Scherbakov
>>                #mihgen
>> 
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>> 
>> 
>> 
>>            --
>>            Vitaly Kramskikh,
>>            Fuel UI Tech Lead,
>>            Mirantis, Inc.
>>            __________________________________________________________________________
>>            OpenStack Development Mailing List (not for usage questions)
>>            Unsubscribe:
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>>        --
>>        Mike Scherbakov
>>        #mihgen
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>> 
>>    --
>> 
>>    --
>> 
>>    Andrew Woodward
>> 
>>    Mirantis
>> 
>>    Fuel Community Ambassador
>> 
>>    Ceph Community
>> 
>> 
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>> 
>> 
>> 
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> 
> 
> --
> Best regards,
> Bogdan Dobrelya,
> Irc #bogdando
> 
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