Setting Up Your Lambda Function Metrics Dashboard

Download the attached JSON file.

Import the file to Grafana as a pre-built dashboard.

Create a new Coralogix - Grafana dashboard.

• Select Apps > Grafana Labs in the upper right-hand menu of your Coralogix dashboard.

• Click Dashboard settings

Create a new variable

• Select Variables in the left-hand menu > Click Add variable

• Create a new variable with the input below > Click update

  • Name: faas_name

  • Type: Constant

  • Value: Input the Lambda function that you wish to monitor. (Using a constant will make it easy to replicate the dashboard for other functions in the future.)

Create panels.

• Create an ‘Invocations’ panel. Click Add panel > Add empty panel

• Set options:

  • Panel options > Title = Invocations

  • Legend > Legend mode = Hidden

  • Standard options > Unit = requests/sec (rps)

  • Standard options > Min = 0

• Add queries:

  • sum(increase(faas_executions_total{faas_name="$faas_name"}[1m])) OR on() vector(0)

• Create a ‘Durations’ panel (per invocation). Click Add panel > Add empty panel

  • Set options:

    • Panel options → Title = Durations (per invocation)

    • Standard options → Unit = milliseconds (ms)

    • Standard options → Min = 0

  • Add queries:

    • sum(increase(faas_init_duration_ms_sum{faas_name="$faas_name"}[1m])) / sum(increase(faas_invoke_duration_ms_count{faas_name="$faas_name"}[1m])) with Legend = Initialisation duration (averaged over all invocations)

    • sum(increase(faas_restore_duration_ms_sum{faas_name="$faas_name"}[1m])) / sum(increase(faas_invoke_duration_ms_count{faas_name="$faas_name"}[1m])) with Legend = Restoration duration (averaged over all invocations)

    • sum(increase(faas_invoke_duration_ms_sum{faas_name="$faas_name"}[1m])) / sum(increase(faas_invoke_duration_ms_count{faas_name="$faas_name"}[1m])) with Legend = Average invoke duration

    • sum(increase(faas_overhead_duration_ms_sum{cx_subsystem_name="lambda-telemetry-test"}[1m])) / sum(increase(faas_invoke_duration_ms_count{cx_subsystem_name="lambda-telemetry-test"}[1m])) with Legend = Average overhead (runtime after invoke) duration

• Create an ‘Errors/Timeouts’ panel. Click Add panel > Add empty panel

  • Set options:

    • Panel options > Title = Errors/Timeouts

    • Standard options > Unit = requests/sec (rps)

    • Standard options > Min = 0

  • Add queries:

    • sum(increase(faas_errors_total{faas_name="$faas_name"}[1m])) OR on() vector(0) with Label = errors

    • sum(increase(faas_timeouts_total{faas_name="$faas_name"}[1m])) OR on() vector(0) with Label = timeouts

• Create a ‘Memory Consumption’ panel. Click Add panel > Add empty panel

  • Set options:

    • Panel options > Title = Memory Consumption

    • Standard options > Unit = megabytes

    • Standard options > Min = 0

  • Add queries:

    • max(faas_mem_usage_MB{faas_name="$faas_name"}) with Label = maximum memory consumption

    • max(faas_mem_limit_MB{faas_name="$faas_name"}) with Label = available memory

• Create a ‘Cold Invocations’ panel. Click Add panel > Add empty panel

  • Set options:

    • Panel options > Title = Cold Invocations

    • Standard options > Unit = requests/sec (rps)

    • Standard options > Min = 0

  • Add queries:

    • sum(increase(faas_init_duration_ms_count{faas_name="$faas_name"}[1m])) with Label = Cold invocations

    • sum(increase(faas_restore_duration_ms_count{faas_name="$faas_name"}[1m])) with Label = Restorations

• Create an ‘Initialization / Restoration Duration’ panel. Click Add panel > Add empty panel

  • Set options:

    • Panel options > Title = Initialization / Restoration Duration

    • Standard options > Unit = milliseconds (ms)

    • Standard options > Min = 0

  • Add queries:

    • sum(increase(faas_init_duration_ms_sum{faas_name="$faas_name"}[1m])) / sum(increase(faas_init_duration_ms_count{faas_name="$faas_name"}[1m])) with Label = Cold invocations

    • sum(increase(faas_restore_duration_ms_sum{faas_name="$faas_name"}[1m])) / sum(increase(faas_restore_duration_ms_count{faas_name="$faas_name"}[1m])) with Label = Average restoration duration

Organize panels.

• Click Add panel > Add new row

• Set Title: Cold start

• Adjust the panels as displayed in the image below

Enjoy your Lambda Function Dashboard!