[Openstack] Why ceilometer use mongo?

Debojyoti Dutta ddutta at gmail.com
Sun Aug 17 19:29:12 UTC 2014


True, for time series, Cassandra is good!

On Fri, Aug 15, 2014 at 11:28 PM, Martinx - ジェームズ
<thiagocmartinsc at gmail.com> wrote:
> BTW, why not Cassandra, instead of Mongo?! It seems pretty solid...
>
>
> On 16 August 2014 02:44, Robert van Leeuwen
> <Robert.vanLeeuwen at spilgames.com> wrote:
>>
>> From what I have seen and heard MySQL simply won't be able to handle it
>> speed wise.
>> You might be able to get a very, very small cluster to run on MySQL.
>> This will be less of an issue with Mongo since writes are faster with
>> Mongo.
>>
>> I wonder if anyone runs a cluster of some size with ceilometer though.
>> (And what they use)
>> During a poll at the operators meetup there was no one running it properly
>> in production due to performance issues..
>>
>> We decided we only wanted to have some graphs of instances and do not need
>> other functionality so we build a plugin to put it in graphite:
>> http://engineering.spilgames.com/using-ceilometer-graphite/
>>
>> Cheers,
>> Robert van Leeuwen
>>
>> Sent from my iPad
>>
>> > On 16 aug. 2014, at 02:14, "Guillermo Alvarado"
>> > <guillermoalvarado89 at gmail.com> wrote:
>> >
>> > Hello,
>> >
>> > I am wondering why Ceilometer uses MongoDB instead MySQL or some
>> > relational database?
>> >
>> > What are the advantages of use MongoDB in this specific case?
>> >
>> > Thanks.
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>
>
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-- 
-Debo~




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