Need a graph for JVM Heap used value coming in message field

Elastic Stack Kibana
1

Hi,

Just started on ELK.

I have a JVMHeapUsage log available in ELK.

The "message" field has value like below:
11/24/15; 10:42:01; 837287936; 536870912; 3817865216; 335988528; 320
11/24/15; 10:40:01; 834142208; 536870912; 3817865216; 484898800; 462

where the last part of message (320 or 462) is JVM heap usage in MB.

I need to display a graph of this value over the timeline.

How can I get this value from the message string and use as Y axis for graph.

Any help is highly appreciated.

Thanks in advance
Prasoon

2

Use Logstash and its csv filter (or grok) to split the input message into discrete fields. After that you'll have a jvm_usage field (or whatever you like to call it) that you can plot in Kibana. Note that you can't have Kibana plot all values, but you can e.g. use a max aggregation which over a sufficiently small interval (time histogram bucket size) becomes very close to a plot of all values.