nginx main module configuration

daemonSyntax: daemon on | offDefault value: onIf it is on, it will be executed in daemon mode. The default is on. Otherwise, after the control terminal ends, the nginx process will also follow. ends with the end of the terminal. This option is mainly used for development and debugging, and is not recommended for production environments.
includeSyntax: include file | , similar to apache’s include command . include can reduce the content in the nginx main configuration file and is recommended. You can also perform global inclusion, for example, include all .conf files under a Kinoshita include test/*.conflock_file
Syntax: lock_file fileDefault value: compile-time option specifies the file to be locked when nginx uses file locking. Receiving connections in nginx requires the accpet system call on Linux. This operation is an atomic operation and is implemented through a mutex. gcc, Intel C++, SunPro C++ compiled on i386, amd64, sparc64, and ppc64 platforms use atomic nginx Instructions are mutually exclusive, and on other platforms, file locking is used. RMaster_Process grammar: Master_Process on | OFF Defirmed value: On
Whether to turn on the Master process, as Daemon instructions are used for debugging. It is not recommended For production environment use. pidSyntax: pid file
Default value: compile-time optionExample:ng After inx starts, the ID of the master process will be To write to a file, this directive specifies the path to the file. ssl_engineSyntax: ssl_engine engineDefault value:
system dependentSpecify the openssl engine used. S You can obtain the currently used OpenSSL engine

timer_Resolution grammar: Timer_Resolution T default value: None example timer_resolution 100ms;

Specify the time precision. By default, nginx will call the gettimeofday() function to obtain the time when returning from calls such as kevent(), epoll, /dev/poll, select(), poll(), etc. If you want to display the time accurately in the log You can set this command via

Default value:

nobody Specify the user under which the nginx worker process runs. The default is nobody. Nobody is a system user with very low permissions on Linux.

worker_cpu_affinitySyntax: worker_cpu_affinity cpumask [cp umask...]Default value:

none
Example, Bind a cpu to each worker process

worker_processes 4;
workcpu_ affinity 0001 0010 0100 1000;

This option can bind the worker process and CPU. Actually the bottom layer

worker_prioritySyntax: worker_priority [-] numberDefault value:

on

Whether to assign a priority value to the worker process

worker_processes Syntax: worker_processes numberDefault value: 1

Can be found in nginx Multiple worker processes, usually for
1. Make better use of multi-core CPU performance

2. Reduce the delay time caused by disk I/O blocking

3. Reduce the number of connections used by a single process to call select()/poll(),

Note: select(), poll() are both I/O multiplexing interfaces, which are obtained through polling The events that are readable or writable on the socket, the execution speed and the number of monitored links (i.e. file descriptors) grow linearly. The more sockets that are monitored, the worse the performance, so the sockets that select and poll listen to The words should be as few as possible. Here nginx reduces the number of listeners in a single process by allocating connections to multiple processes.

worker_rlimit_nofile Syntax: worker_rlimit_nofile limit Default value: 'Specify the maximum number of file descriptors opened by the worker process

working_directory Syntax: working_directory path Default value: --prefixSpecify the working directory of the worker process in nginx. The default is the nginx installation directory

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The above introduces the nginx main module configuration, including aspects of the configuration. I hope it will be helpful to friends who are interested in PHP tutorials.