Important: This documentation is about an older version. It's relevant only to the release noted, many of the features and functions have been updated or replaced. Please view the current version.

DocumentationBeylaSetupStandalone

Run Beyla as a standalone process

Beyla can run as a standalone Linux OS process with elevated privileges that can inspect other running processes.

For a complete introduction tutorial on how to collect and visualize the instrumented data, follow the quick start tutorial.

Download and install

You can download the Beyla executable from the Beyla releases page.

Alternatively, download the Beyla executable with the go install command:

sh Copy

go install github.com/grafana/beyla/cmd/beyla@latest

Configure

Beyla can be configured via:

• environment variables
• a YAML configuration file, supplied with the -config CLI argument

If the same configuration property is defined in both the YAML file and the environment variables, the value specified in the environment variables takes precedence over the configuration file.

For a complete list of configuration options, see the Beyla configuration options documentation.

Run

Beyla requires at least two configuration options to run:

• the executable to instrument, specified with the command line name or port
• a metrics exporter, either OpenTelemetry or Prometheus

Beyla requires administrative (sudo) privileges, or at least it needs to be granted the CAP_SYS_ADMIN capability.

Examples

Let’s instrument the process that owns the port 443, and expose the metrics as a Prometheus endpoint listening on the port 8999. In this example, the configuration is passed exclusively through environment variables:

sh Copy

BEYLA_PROMETHEUS_PORT=8999 BEYLA_OPEN_PORT=443 sudo -E beyla

The equivalent execution, but configured via a YAML file would look like:

yaml Copy

cat > config.yml <<EOF
open_port: 443
prometheus_export:
  port: 8999
EOF
sudo beyla -config config.yml

In the following example, the previous YAML configuration option for the Prometheus port is overridden by an environment variable:

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BEYLA_PROMETHEUS_PORT=8888 sudo -E beyla -config config.yml