Detailed explanation of php configuration php-fpm startup parameters and configuration_PHP tutorial

#Test php- fpm configuration
/usr/local/php/sbin/php-fpm -t
/usr/local/php/sbin/php-fpm -c /usr/local/php/etc/php.ini -y /usr/local/php/etc/php-fpm.conf -t

#Start php-fpm
/usr/local/php/sbin/php-fpm
/usr/local/ php/sbin/php-fpm -c /usr/local/php/etc/php.ini -y /usr/local/php/etc/php-fpm.conf

#Close php-fpm
kill -INT `cat /usr/local/php/var/run/php-fpm.pid`

#Restart php-fpm
kill -USR2 `cat /usr/local/php/var /run/php-fpm.pid`

pid = run/php-fpm.pid
#pid setting, the default is var/run/php-fpm.pid in the installation directory, it is recommended to enable

error_log = log/ php-fpm.log
#Error log, var/log/php-fpm.log in the installation directory by default

log_level = notice
#Error level. Available levels are: alert (required Process immediately), error (error situation), warning (warning situation), notice (general important information), debug (debugging information). Default: notice.

emergency_restart_threshold = 60
emergency_restart_interval = 60s
#Indicates that if the number of php-cgi processes with SIGSEGV or SIGBUS errors exceeds emergency_restart_threshold within the value set by emergency_restart_interval, php-fpm will restart gracefully. These two options generally remain at their default values.

process_control_timeout = 0
#Set the timeout for the child process to accept the reuse signal of the main process. Available units: s (seconds), m (minutes), h (hours), or d (days) Default Unit: s (seconds). Default value: 0.

daemonize = yes
#Execute fpm in the background, the default value is yes, if it is for debugging, it can be changed to no. In FPM, it is possible to run multiple process pools with different settings. These settings can be set individually for each process pool.

listen = 127.0.0.1:9000
#fpm listening port, which is the address processed by php in nginx. Generally, the default value is sufficient. Available formats are: 'ip:port', 'port', '/path/to/unix/socket'. Each process pool needs to be set.

listen.backlog = -1
#backlog Number, -1 means unlimited, determined by the operating system, just comment out this line. Backlog meaning reference: http://www.3gyou.cc/?p=41

listen.allowed_clients = 127.0.0.1
# Allow access to the IP of the FastCGI process, set any to not restrict IP, if To set up nginx on other hosts to also access this FPM process, the listen must be set to a local IP that can be accessed. The default value is any. Each address is separated by a comma. If not set or empty, any server is allowed to request a connection

listen.owner = www
listen.group = www
listen.mode = 0666
#unix socket setting options, if you use tcp to access, just comment here.

user = www
group = www
# Account and group to start the process

pm = dynamic #For dedicated servers, pm can be set to static.
#How to control the child process, the options are static and dynamic. If static is selected, a fixed number of child processes is specified by pm.max_children. If dynamic is selected, it is determined by the following parameters:
pm.max_children #, the maximum number of child processes
pm.start_servers #, the number of processes at startup
pm.min_spare_servers #, to ensure the minimum number of idle processes , if the idle process is less than this value, create a new sub-process
pm.max_spare_servers # to ensure the maximum number of idle processes. If the idle process is greater than this value, clean it up

pm.max_requests = 1000
#Set the number of requests served before each child process is reborn. This is very useful for third-party modules that may have memory leaks. If set to '0', requests will always be accepted. Equivalent to the PHP_FCGI_MAX_REQUESTS environment variable. Default value : 0.

pm.status_path = /status
#The URL of the FPM status page. If not set, the status page cannot be accessed. Default value: none. Munin monitoring will use

ping.path = /ping
#The ping URL of the FPM monitoring page. If not set, the ping page cannot be accessed. This page is used to externally detect whether FPM is alive and can respond to requests. Please note that it must start with a slash ( /).

ping.response = pong
# Used to define the return response of the ping request. The returned text/plain format text is HTTP 200. Default value: pong.

request_terminate_timeout = 0
#Set the timeout abort time for a single request. This option may be useful for scripts where the 'max_execution_time' in the php.ini setting does not abort running scripts for some special reasons. Set to '0' to mean 'Off'. When it occurs often You can try changing this option when receiving a 502 error.

request_slowlog_timeout = 10s
#When a request is set for the timeout period, the corresponding PHP call stack information will be completely written to the slow log. Setting it to '0' means 'Off'

slowlog = log/$pool.log.slow
#Slow request logging, used with request_slowlog_timeout

rlimit_files = 1024
#Set the rlimit limit of the file open descriptor. Default value: The system-defined value of the default openable handle is 1024, which can be viewed using ulimit -n and modified with ulimit -n 2048.

rlimit_core = 0
#Set the maximum limit value of core rlimit. Available values: 'unlimited', 0 or positive integer. Default value: system defined value.

chroot =
#Chroot directory at startup. The defined directory needs to be an absolute path. If not set, chroot will not be used.

chdir =
#Set the startup directory, and it will be automatically Chdir to this directory at startup . The defined directory needs to be an absolute path. Default value: current directory, or / directory (when chrooting)

catch_workers_output = yes
#Redirect stdout and stderr during the running process to the main error log file. If not set, stdout and stderr will be redirected to /dev/null according to FastCGI rules. Default value: empty.

$ctx = stream_context_create(array(
'http' => array(
'timeout' => 10 //Set a timeout in seconds
)
));

file_get_contents($str, 0, $ctx);

pm.max_requests = 1000

tail -f /var/log/www.slow.log