Name

• backtrace module

Description

• It can be used to dump backtrace of nginx in case a worker process exits abnormally, e.g. when some signal is received (SIGABR, SIGBUS, SIGFPE, SIGILL, SIGIOT, SIGSEGV). It's quite handy for debugging purpose.
• This module requires the backtrace(3) function in glibc. You can't enable it on systems lack of this function (FreeBSD, Darwin).

Directives

backtrace_log

Syntax: backtrace_log log_path

Default: backtrace_log error.log

Context: main

Specify the log file name of backtrace. backtrace_log /path/to/backtrace.log

backtrace_max_stack_size

Syntax: backtrace_max_stack_size size

Default: backtrace_max_stack_size 30

Context: main

Specify the maximum stack depth for backtrace