Core
Guides v2.x
2

# Signal Handling

Kuzzle handles certain Unix signals which fall into the following three categories:

  • Abnormal termination
  • Normal termination
  • Dump report generation

# Abnormal termination

Unix signal names:

  • SIGQUIT
  • SIGABRT
  • SIGPIPE

These signals are the result of a critical error and will force Kuzzle to shutdown. When one of the aforementioned Unix signals is detected, Kuzzle will first generate a dump report and then shutdown.

# Normal termination

Unix signal names:

  • SIGTERM
  • SIGINT

These signals are the result of a request to terminate gracefully. When one of the aforementioned Unix signals is detected, Kuzzle will refuse new requests, exit the cluster, finish the current request queue and then shutdown.

# Dump report

Unix signal names:

  • SIGTRAP

When one of the aforementioned Unix signals is detected, Kuzzle will generate a dump report and continue to serve requests normally.