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Do Nothing

The Do Nothing exporter is a placeholder sink that discards all monitoring data and health check results without performing any action. It implements the sink interface but does not write, store, or transmit data anywhere.

Overview​

The Do Nothing exporter is registered with the identifier do_nothing and is primarily used for:

  • Testing and development: Running monitoring commands or health checks without generating output
  • Dry runs: Validating command syntax and configuration without side effects
  • Placeholder configuration: Temporarily disabling data export while maintaining valid configuration

Configuration​

Available Options​

The Do Nothing exporter accepts no configuration options (--sink-opt is not required).

Basic Usage​

# Use with monitoring commands
gcm slurm_monitor --sink=do_nothing --once

# Use with health checks
health_checks check-nvidia-smi fair_cluster prolog --sink=do_nothing

Configuration File​

[gcm.slurm_monitor]
...
sink = "do_nothing"

Use Cases​

Testing Command Execution​

When developing or testing monitoring scripts, use the Do Nothing sink to verify command execution without generating output files or logs:

# Test that the command runs without errors
gcm slurm_monitor --sink=do_nothing --once

Development and Debugging​

During development of new monitoring components or health checks, use the Do Nothing sink to focus on data collection logic without worrying about output formatting:

# Test new monitoring logic
gcm custom_monitor --sink=do_nothing --once

Temporary Disabling​

In production configurations, temporarily switch to the Do Nothing sink to disable data export without removing or commenting out configuration:

# Temporarily disable export
[gcm.slurm_monitoring]
...
# sink = "otel"  # Commented out
sink = "do_nothing"  # Temporary