Instalação e Configuração do Grafana Agent

The Grafana Agent is a single, lightweight executable that consolidates multiple observability tools into one. It eliminates the need to separately run Prometheus, Promtail, Node Exporter, cAdvisor, and other Prometheus ecosystem exporters. The agent offers several advantages, including a single binary, reduced operational complexity, lower resource usage, native remote write, and unified configuration. The agent's architecture consists of integrations, metrics, and logs components. To install the agent, download and extract the binary, create a user and directories, and set up a systemd service. The agent's configuration is defined in a YAML file, which includes server settings, integrations, relabeling configurations, and metric and log settings. The configuration file also defines remote write settings for Mimir/Prometheus and Loki backends. The agent can be configured to scrape metrics and logs from various targets, including local applications and Docker containers. The agent also supports service discovery via file and dynamic configuration via environment variables.