Hi Ronny,
Your setup looks good, I believe metric limit was causing problem here. By default, the .net machine agent registers a maximum of 200 metrics. See Metrics Limits for more details. We can increase this by adding <metrics> element under machine agent,
<machine-agent> <metrics max-metrics="300"/> </machine-agent>
Regarding DLL based extension, here are quick steps-
- Create a new class lib project (c#)
- install nuget package for the application-
Install-Package AppDynamics.Agent.ExtensionSdk -Version 1.0.4
- This will add two class files in the project. For custom metric, you can write your code in SampleMetricExtension.CS file.
- You can add more references as needed to write your operation.
- Under <ExtensionManager>/extensions folder, create a new folder with name "CustomCodeExtension" (or anything)
- Create extension.xml file with following content-
<?xml version="1.0" encoding="utf-8"?>
<extension type="Metric" name="CustomCodeExtension" enabled="true">
<execution mode="Periodic" type="DLL" path="SampleMetricExtension" />
<description>Optional description for the custom extension.</description>
<metrics>
<metric name="metric1" />
</metrics>
<instances>
<instance name="instance1" />
</instances>
<parameters>
<add key="key1" value="value1" />
</parameters>
</extension>
In above file-
- name="CustomMetricExtension" >> is the name of extension, it can be same as folder name
- path="SampleMetricExtension" >> is fully classified class name of extension class, basically ayy class extending AExtensionBase in custom extension project.
- You can set any number of metrics or instances and fill their value in execute method of SampleMetricExtension class.
- Compile the project and copy output assembly to the extension folder <ExtensionManager>/extensions/CustomCodeExtension
- Now restart extension service followed by restart of coordinator service
Let me know if you face any issues while creating this extension or have more questions.
Thanks,
Anurag
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