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Failure as a Service. Provides many misbehaviors... as a Service.

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FaaS - Failure as a Service

Provides many misbehavior cases as a Service.

General configuration

Available command line flags

  • --port - port to listen on
  • --host - host to listen on (defaults to 0.0.0.0)
  • --config-file - application config file
  • --log-directory - application log directory (defaults to cwd)
  • --debug - print debug info
  • --start-delay-seconds start application after N seconds (defaults to 0)
  • --crash - crash application before starting socket
  • --ignore-signal - specify OS signal to be ignored in numeric format
  • --require-authentication - enforce token base authentication - if set, --config-file is required as well

Global GET parameters

  • delay - wait N seconds before processing a request - this can simulate time-consuming operations (defaults to 1)
  • return_status_code - what status code should be returned after processing a request

Possible calls

GET /info

Displays various informations about current server process.

GET /restart

Kill application and let it be restarted. If crash_loop is set, during next startup, app will restart again. Parameters

  • exit_code - exit code number to exit with (defaults to 0)
  • crash_loop - sets crash loop for this process by creating file $PWD/crash_loop_${CRASH_LOOP_ENV_VAR} - during startup, application will crash before opening listen socket if this file is found and $CRASH_LOOP_ENV_VAR is set by default to NOMAD_ALLOC_ID which leads to crash loop files: $PWD/crash_loop_$ENV['NOMAD_ALLOC_ID']' (defaults to False)

Exits the application with specified exit_code.

GET /oom

Allocate memory_mb_to_allocate until reaching memory limit and possibly being killed by OOM killer.

Parameters

  • memory_mb_to_allocate - how much memory application will allocate in total (defaults to 0)
  • steps - split allocating memory to N steps (defaults to 1)
  • sleep_between_steps - sleep for N seconds between steps (defaults to 0)

GET /logs

Generate generate_bytes_per_second logs to a given output_fd_param.

Parameters

  • bytes_per_second - how much logs we should generate per second (defaults to 1024)
  • seconds - generate logs for N seconds (defaults to 1)
  • output_fd_param - file to which generate logs (filename or stdout/stderr, defaults to stdout)

GET /stop_listener

Stop TCP listener but keep the main process runnning.

Copyright and license

Copyright 2020 Zendesk

Licensed under the Apache License, Version 2.0