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Using APM with Linux / Docker Agent

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Case 1 : Application Running natively on VM / Host

If you are running your application on a VM / host natively, where the host agent is running. Then APM will communicate to Host Agent without any effort!

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Case 2 : Application Running as a container

If you are running your application as a container, then you might have to forward data generated by Middleware APM to Middleware Host Agent. You simply have to set this environment variable in your container:

Shell
MW_AGENT_SERVICE=<DOCKER_BRIDGE_GATEWAY_ADDRESS>
You can learn more about DOCKER_BRIDGE_GATEWAY_ADDRESS from the official docker docs here, but the default value is mostly 172.17.0.1

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Using APM with Kubernetes Agent

If your application is running inside Kubernetes, Then you will have to forward data generated by Middleware APM to Middleware Kubernetes AgentYou simply have to set this environment variable in your container:

Shell
MW_AGENT_SERVICE=mw-service.mw-agent-ns.svc.cluster.local

In the above command, We are assuming that Middleware Kubernetes Agent is running inside “mw-agent-ns” namespace.

In some exceptional cases Middleware Agent might be running in a different Kubernetes namespace. You can get the correct namespace with this command:

Shell
kubectl get service --all-namespaces | grep mw-service
Need assistance or want to learn more about Middleware? Contact us at support[at]middleware.io.