[openstack-dev] [Ceilometer][Gnocchi] Gnocchi cannot deal with combined resource-id ?

Luo Gangyi lgy181 at foxmail.com
Fri Sep 11 15:46:57 UTC 2015 

Hi, Julien
  
 I am using master branch and newest code for testing.
  
 For the purpose for learning the structure of gnocchi, I changed the default UUID type of mysql from binary to char, so I can easily link the resource-id(I mean in database), metric id and directory name of storing measures.
  
 When I did that, I found all the metrics where their resource id is combined(here, I mean in Ceilometer, such as instance-xxx-tapxxxx) have no measures stored.
  
 Log in Ceilometer collector records this:
 "
 2015-09-11 07:55:55.097 10636 ERROR ceilometer.dispatcher.gnocchi [-] Resource instance-00000001-4641f59e-994c-4255-b0ec-43a276d1c19c-tap8aadb7ad-d7 creation failed with status: 400: <html>
 <head>
  <title>400 Bad Request</title>
 </head>
 <body>
  <h1>400 Bad Request</h1>
  The server could not comply with the request since it is either malformed or otherwise incorrect.<br /><br />
Invalid input: required key not provided @ data['display_name']
  </body>
</html>

 "
 So I wander whether gnocchi cannot deal with such combined resource-id metrics or whether it is because I change the UUID type or whatever.
  
 And another question is how to query measures for those metrics whose resource id is combined.
  
 For example, I want to query the network traffic of an vm, I know the instance uuid 1111-2222, I know metric name 'network.incoming.byte.rate' but I do not know the exact resouce_id and metric id. What procedure should I do ? 
  ------------------
 Luo Gangyi   luogangyi at cmss.chinamobile.com



  
  

 

 ------------------ Original ------------------
  From:  "Julien Danjou";<julien at danjou.info>;
 Date:  Fri, Sep 11, 2015 06:31 PM
 To:  "Luo Gangyi"<lgy181 at foxmail.com>; 
 Cc:  "OpenStack Development Mailing L"<openstack-dev at lists.openstack.org>; 
 Subject:  Re: [openstack-dev] [Ceilometer][Gnocchi] Gnocchi cannot deal with combined resource-id ?

 

On Fri, Sep 11 2015, Luo Gangyi wrote:

Hi Luo,

> I find that gnocchi cannot deal with combined resource-id such as
> instance-xxxxxx-tapxxxxxx or instance-xxxx-vda. I'm not sure whether it is my
> configuration problem or just bug.

Which version are you testing? The master branch has no support for
resource ID that are not UUID.

> And if such combined resource-id can be processed correctly, what about its
> metadata(or called attributes)? In current design, gnocchi seems treat
> instance-aaa, instance-aaa-tap111, instance-aaa-tap222 as equal although they
> have parent-child relationship and share many attributes.

We just merged support for those resources. We do not store any
attribute other than the name and parent instance AFAICS. What do you
miss as an attribute exactly?

-- 
Julien Danjou
# Free Software hacker
# http://julien.danjou.info
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