[collectd] How to reorganize metric tree in a "collectd -> graphite" platform

[Toni Moreno]

Good Morning .

We have plans to test different tools to get performance data for a lot of
servers, and we would like to use collectd and graphite to do it.

The main goal of this test is to be able to reorganize the metric tree in
graphite by servername and after "product"

We wish this kind of tree:


<server_name>/<product>/<product-instance>/<type>-<typeinstance>


where product can be: "system" (for os), "apache", "weblogic", "websphere",
"oracle", etc.

By exemple

serverpro01/system/df/XXXXXX
serverpro01/system/cpu/XXXXXX
serverpro01/system/memory/XXXXXX
serverpro01/apache/<apache-www-mysite-com-80>/XXXXXX
serverpro01/apache/<apache-www-othersite-com-81>/XXXXXX






We have achieved it  by replacing "plugin" names by "<product>/<plugin>"
 in the  PreCacheChain Rules:


by example:


PreCacheChain "ReName"
<Chain "ReName">
   <Rule "rename_processes">
     <Target "replace">
        Plugin  "\\<processes\\>" "system/processes"
     </Target>
   </Rule>

   <Rule "rename_disk">
     <Target "replace">
        Plugin  "\\<disk\\>" "system/disk"
     </Target>
   </Rule>

   <Rule "rename_cpu">
     <Target "replace">
        Plugin  "\\<cpu\\>" "system/cpu"
     </Target>
   </Rule>
..
..
</Chain>




The problem comes when I would like to use one plugin ( by example tail) to
add metrics below any "product" ,

by example:


1.- Parsing /var/log/messages we would like to add metrics below "system"


serverpro01/system/errors/<metric-name>


2.- Parsing /var/log/httpd/{access/error}-www-mysite-80.log  we would like
add metrics below an apache instance


serverpro01/apache/<apache-www-othersite-com-81>/<metric-name>


3.- Parsing /var/log/httpd/{access/error}-access-www-mysite-81.log we would
like add metrics below an other apache instance:

serverpro01/apache/<apache-www-othersite-com-81>/<metric-name>


4.-  Parsing /oracle/app/oracle/diag/rdbms/PROD/PROD/trace/alert_PROD.log
we would like to add metrics below an oracle instance

     serverpro01/oracle/<oracle-db_1>/<metric-name>


I've tried with PreCache and PostCache Chains but I have not found any way
to do Replace  with memory like other regex tools  does


 <Rule "rename_tail">
    <Target "replace">
      Plugin  "\\<tail\\>" ""                         <--doesn't work
      PluginInstance "\\<apache_*(.*)*>\\" "apache/\1"  <--doesn't work
    </Target>
   </Rule>




How can do that?

Any help would be appreciated !!

Thanks a lot!!


-- 

Att

Toni Moreno

699706656



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