Which configuration file contains Instana server connection details for the host agent?

The Instana host agent uses an OSGi-based framework, and its configuration is modularized into several files within the /etc/instana/ directory. The file com.instana.agent.main.sender.Backend.cfg specifically contains the runtime configuration for the agent's connection to the Instana backend (server). This includes the endpoint host and port, which the agent uses to send collected metrics and traces. These settings are typically populated from higher-level configurations like environment variables or the configuration.yaml file upon agent startup.

A. com.instana.agent.main.config.Agent.cfg: This file contains general agent identification settings, such as the agent's unique UUID, but not the connection details for the Instana backend.

C. com.instana.agent.main.sender.File.cfg: This file configures a file-based sender, which is used for diagnostic purposes or specific offline scenarios, not for the primary live connection to the Instana server.

D. com.instana.agent.main.sender.Server.cfg: This is an incorrect file name. In the context of the Instana agent's internal components, the destination for data is referred to as the 'Backend', not the 'Server'.

1. IBM Instana Observability Documentation - Configuring agent endpoint for host agent: This document explains the configuration methods (environment variables, configuration.yaml) for setting the agent's backend endpoint. These settings are processed by the agent and stored in the com.instana.agent.main.sender.Backend.cfg file for the sender component to use. (Reference: IBM Documentation, Instana Observability on SaaS, "Configuring agent endpoint for host agent").

2. IBM Instana Observability Documentation - Host agent configuration files: This document outlines the structure of the agent's configuration directory (/etc/instana/). It describes how the agent uses a main configuration.yaml file, which then influences the more granular .cfg files used by the agent's internal OSGi bundles, such as the backend sender. (Reference: IBM Documentation, Instana Observability on SaaS, "Host agent configuration files").