Controlling nginx

nginx can be controlled with signals. The process ID of the master process is written to the file /usr/local/nginx/logs/nginx.pid by default. This name may be changed at configuration time, or in nginx.conf using the pid directive. The master process supports the following signals:

TERM, INT	fast shutdown
QUIT	graceful shutdown
HUP	changing configuration, keeping up with a changed time zone (only for FreeBSD and Linux), starting new worker processes with a new configuration, graceful shutdown of old worker processes
USR1	re-opening log files
USR2	upgrading an executable file
WINCH	graceful shutdown of worker processes

Individual worker processes can be controlled with signals as well, though it is not required. The supported signals are:

TERM, INT	fast shutdown
QUIT	graceful shutdown
USR1	re-opening log files
WINCH	abnormal termination for debugging (requires debug_points to be enabled)

Links:

https://nginx.org/en/docs/control.html

doc_nginx

2017-02-09 07:05:46

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