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From Konstantin Boudnik <...@apache.org>
Subject Re: Build/test infrastructure
Date Sun, 27 Feb 2011 19:36:55 GMT
And now jailed environments with Hudson - oh yes, lovely yinst all over again.

Eric, the glorious plans about a framework to deploy thousand of nodes
by the click of a button are awesome indeed. But you apparently
ignoring the point:
  - this is about synchronization of 10 build machines at the level of
system packaging and operating system configuration.

With warmest regards,

On Sun, Feb 27, 2011 at 01:32, Eric Yang <eyang@yahoo-inc.com> wrote:
> On 2/26/11 7:10 PM, "Konstantin Boudnik" <cos@apache.org> wrote:
>> On Sat, Feb 26, 2011 at 05:38PM, Eric Yang wrote:
>> Furthermore, my Puppet knowledge is very limited and I am for sure no expert
>> in maven. I have some concern however:
>>   - how to provide privileged access
>>   - how and where to store host configurations (i.e. packages names, versions,
>>     which are gonna be different for difference OSes)
>>   - how to do native packages (see above example) and native dependency
>>     management from maven? With shell scripting?
>>   - how to maintain such a construct?
>> I can continue for a long time, but I'd rather want to solve an issue of
>> managing build host configurations/package sets in a most efficient and
>> sustainable manner.
> Hudson already supports chroot jail environment.  It is easy to setup
> privileged access in the jailed environment by giving the hudson running
> user sudo access to the jailed environment.  The host configuration can be
> mirrored into chroot environment with minimum set of shell commands..?
>> Sorry, but Maven + shell script can be called simplification only in a pipe
>> dream ;) Maven is a build tool. A relatively good one perhaps, but just a
>> build tool. Certainly everything can be done with a combination of a shell
>> scripting + tar balls and a little SSH sugar topping. But I'd rather use a
>> accurately designed and supported tool (Puppet, Chef, etc.).
> Maven supports various kind of remote deployment plugin.  Exec plugin with
> shell script is the easiest one to implement.  There are also plugin like
> cargo for more complex container deployment.  There is a plan to write a
> deployment framework for hadoop for large scale deployment.  This project is
> in planning stage.  The scope is deploying the entire hadoop stack (hdfs,
> mr, zookeeper, hbase, pig, hive, and chukwa) to multiple large clusters.
> Similar to what you are planning except at the scale that it would make
> sense to use puppet+mcollective.  We had done the evaluation, and found per
> puppet master would not scale well after 1800 nodes, and multilayer
> puppeteer spamming tree to cover all our nodes, is not ideal.  We choose to
> use chef-solo for edge deployment.  The rest of the details are to be worked
> out.  This is the reason that I am interested on the test environment that
> is being planned here.  It will be possible to use "to be invented"
> framework in the hudson.  This system is not going to be grown in ant/maven
> build script, hence it will be better to keep build system simple for now.
> Regards,
> Eric
>> And BTW - Hadoop builds aren't maven'ized yet. Which renders most of the
>> argument a time waste until that problem is solved.
>> At any rate, HADOOP-7157 is the JIRA for this. Please comment on it.
>> Cos
>>> Regards,
>>> Eric
>>>> You don't need to setup puppet muster in order to bounce a node. Puppet
>>>> works
>>>> i a client-only mode just as perfect.
>>>> Cos
>>>>> packaging only, but express my opinions on improving build system and
>>>>> making
>>>>> the system easier to reproduce.
>>>>> Regards,
>>>>> Eric
>>>>> On 2/26/11 2:18 PM, "Konstantin Boudnik" <cos@apache.org> wrote:
>>>>> This discussion isn't about build of the product nor about packaging
>>>>> of it. We are discussing patch validation and snapshot build
>>>>> infrastructure.
>>>>> On Sat, Feb 26, 2011 at 12:43, Eric Yang <eyang@yahoo-inc.com>
>>>>>> We should be very careful about the approach that we chosen for
>>>>>> build/packaging.  The current state of hadoop is coupled together
due to
>>>>>> lack of standardized RPC format.  Once this issue is cleared, the
>>>>>> community will want to split hdfs and m/r into separated projects
at some
>>>>>> point.  It may be better to ensure project is modularized, and work
>>>>>> the same svn repository.  Maven is great for doing this, and most
of the
>>>>>> build and scripts can be defined in pom.xml.  Deployment/test server
>>>>>> configuration can be pass in from hudson.  We should ensure that
build and
>>>>>> deployment script do not further couple the project.
>>>>>> Regards,
>>>>>> Eric
>>>>>> On 2/26/11 11:14 AM, "Konstantin Boudnik" <cos@apache.org>
>>>>>> On Fri, Feb 25, 2011 at 23:47, Nigel Daley <ndaley@mac.com>
>>>>>>> +1.
>>>>>>> Once HADOOP-7106 is committed, I'd like to propose we create
a directory
>>>>>>> at
>>>>>>> the same level of common/hdfs/mapreduce to hold build (and deploy)
>>>>>>> scripts and files.  These would then get branches/tagged with
the rest of
>>>>>>> the release.
>>>>>> That makes sense, although I don't see changes of the host
>>>>>> configurations to happen very often.
>>>>>> Cos
>>>>>>> Nige
>>>>>>> On Feb 25, 2011, at 7:55 PM, Konstantin Boudnik wrote:
>>>>>>>> Looking at re-occurring build/test-patch problems on hadoop?
>>>>>>>> machines I
>>>>>>>> thought of a way to make them:
>>>>>>>>  a) all the same (configuration, installed software wise)
>>>>>>>>  b) have an effortless system to run upgrades/updates on
all of them in
>>>>>>>> a
>>>>>>>>  controlled fashion.
>>>>>>>> I would suggest to create Puppet configs (the exact content
to be
>>>>>>>> defined)
>>>>>>>> which we'll be checked in SCM (e.g. SVN), Whenever a build
>>>>>>>> software
>>>>>>>> is needed to be restored/updated a simple run of Puppet across
>>>>>>>> machines
>>>>>>>> or change in config and run of Puppet will do the magic for
>>>>>>>> If there are no objections from the community I can put together
>>>>>>>> Puppet recipes which might be evolved as we go.
>>>>>>>> --
>>>>>>>> Take care,
>>>>>>>>       Cos
>>>>>>>> 2CAC 8312 4870 D885 8616  6115 220F 6980 1F27 E622
>>>>>>>> After all, it is only the mediocre who are always at their
>>>>>>>>                Jean Giraudoux

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