實驗環境：CentOS7

[root@~ localhost]#yum -y install php-fpm
php-fpm包：用於將php運行於fpm模式

#在安裝php-fpm時，一般同時安裝如下包
[root@~ localhost]#yum -y install php-mbstring php-mcrypt php-mysql

[root@~ localhost]#rpm -ql php-fpm
/etc/logrotate.d/php-fpm    
/etc/php-fpm.conf    #服務配置檔案
/etc/php-fpm.d
/etc/php-fpm.d/www.conf   #主配置檔案
 

/etc/sysconfig/php-fpm
/run/php-fpm
/usr/lib/systemd/system/php-fpm.service
/usr/lib/tmpfiles.d/php-fpm.conf
/usr/sbin/php-fpm
/usr/share/doc/php-fpm-5.4.16
/usr/share/doc/php-fpm-5.4.16/fpm_LICENSE
/usr/share/doc/php-fpm-5.4.16/php-fpm.conf.default
/usr/share/fpm
/usr/share/fpm/status.html    #內建的網頁狀態測試頁面
/usr/share/man/man8/php-fpm.8.gz
/var/log/php-fpm
[root@~ localhost]#vi /etc/php-fpm.conf 

;;;;;;;;;;;;;;;;;;;;;
; FPM Configuration ;
;;;;;;;;;;;;;;;;;;;;;

;;;;;;;;;;;;;;;;;;
; Global Options ;　　#全域性配置選項
;;;;;;;;;;;;;;;;;;

[global]
; Pid file
; Default Value: none
pid = /run/php-fpm/php-fpm.pid　　　　#記憶體中的程序編號檔案

; Error log file
; Default Value: /var/log/php-fpm.log
error_log = /var/log/php-fpm/error.log　　　　#錯誤日誌檔案

; Log level
; Possible Values: alert, error, warning, notice, debug
; Default Value: notice
;log_level = notice　　　　　　　　　　　　　　#定義日誌級別

; Send FPM to background. Set to 'no' to keep FPM in foreground for debugging.
; Default Value: yes
daemonize = no　　　　　　　　　　#是否以守護程序的方式執行，no表示不是

;;;;;;;;;;;;;;;;;;;;
; Pool Definitions ;　　　　　　　　#定義連線池，對應的檔案是：/etc/php.-fpm.d/www.conf
;;;;;;;;;;;;;;;;;;;;

; See /etc/php-fpm.d/*.conf
    

#fpm模式監聽的埠是9000
[[email protected] localhost]#cp -av www.conf{,.bak}  #修改配置檔案時先備份
‘www.conf’ -> ‘www.conf.bak’
[[email protected] localhost]#vi www.conf

; Start a new pool named 'www'.
[www]
; Note: This value is mandatory.
listen = 127.0.0.1:9000　　　　#監聽本地的ip和埠；

; Set listen(2) backlog. A value of '-1' means unlimited.
; Default Value: -1

;listen.backlog = -1　　　　　　#後援佇列：當請求數大於併發數時，設定排隊等待的請求數；-1表示無限制

listen.allowed_clients = 127.0.0.1#授權設定，允許那些主機可以連線本服務主機;若httpd在別的主機，則需要修改

user = apache　　　　　　　　#執行程序的使用者
; RPM: Keep a group allowed to write in log dir.
group = apache　　　　　　　　#執行程序的組

#執行子程序的方式：static 靜態方式 和dynamic 動態方式

; Choose how the process manager will control the number of child processes.
; Possible Values:
;static- a fixed number (pm.max_children) of child processes;
;dynamic- the number of child processes are set dynamically based on the
; following directives:
; pm.max_children - the maximum number of children that can
; number then some children will be killed.
; Note: This value is mandatory.
pm = dynamic　　#以動態方式執行

; The number of child processes to be created when pm is set to 'static' and the
; maximum number of child processes to be created when pm is set to 'dynamic'.
; This value sets the limit on the number of simultaneous requests that will be
; served. Equivalent to the ApacheMaxClients directive with mpm_prefork.
; Equivalent to the PHP_FCGI_CHILDREN environment variable in the original PHP
; CGI.
; Note: Used when pm is set to either 'static' or 'dynamic'
; Note: This value is mandatory.
pm.max_children = 50　　　　#最大子程序數

; The number of child processes created on startup.
; Note: Used only when pm is set to 'dynamic'
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 5　　　　#服務啟動，先建立的服務數量

; The desired minimum number of idle server processes.
; Note: Used only when pm is set to 'dynamic'
; Note: Mandatory when pm is set to 'dynamic'
pm.min_spare_servers = 5　　#啟動的最小空閒服務數量，應大於啟動時建立的服務數

; The desired maximum number of idle server processes.
; Note: Used only when pm is set to 'dynamic'
; Note: Mandatory when pm is set to 'dynamic'
pm.max_spare_servers = 35　　#啟動的最大空閒服務數量

; The number of requests each child process should execute before respawning.
; This can be useful to work around memory leaks in 3rd party libraries. For
; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.
; Default Value: 0
;pm.max_requests = 500　　#每個子程序最多響應多少個請求，然後關閉

; The URI to view the FPM status page. If this value is not set, no URI will be
; recognized as a status page. By default, the status page shows the following
; information:
; accepted conn - the number of request accepted by the pool;
; pool - the name of the pool;
; may conflict with a real PHP file.
; Default Value: not set
pm.status_path = /pmstatus　　#啟用此行,內建狀態頁,改成pmstatus

; may conflict with a real PHP file.
; Default Value: not set
ping.path = /ping　　　　#伺服器遠端健康狀況探測，檢測伺服器是否正常

; This directive may be used to customize the response of a ping request. The
; response is formatted as text/plain with a 200 response code.
; Default Value: pong
ping.response = pong　　#探測迴應

; The timeout for serving a single request after which the worker process will
; be killed. This option should be used when the 'max_execution_time' ini option
; does not stop script execution for some reason. A value of '0' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
;request_terminate_timeout = 0　　#響應超時時間，0表示不超時

; The timeout for serving a single request after which a PHP backtrace will be
; dumped to the 'slowlog' file. A value of '0s' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)

; Set max core size rlimit.
; Possible Values: 'unlimited' or an integer greater or equal to 0
; Default Value: system defined value
;rlimit_core = 0

; prevent configuration mistakes on the web server side. You should only limit
; FPM to .php extensions to prevent malicious users to use other extensions to
; exectute php code.
; Note: set an empty value to allow all extensions.
; Default Value: .php
;security.limit_extensions = .php .php3 .php4 .php5

; Additional php.ini defines, specific to this pool of workers. These settings
; overwrite the values previously defined in the php.ini. The directives are the
; same as the PHP SAPI:
; php_value/php_flag - you can set classic ini defines which can

pm.min_spare_servers = 5

; The desired maximum number of idle server processes.
; Note: Used only when pm is set to 'dynamic'
; Note: Mandatory when pm is set to 'dynamic'
pm.max_spare_servers = 35

; The number of requests each child process should execute before respawning.
; This can be useful to work around memory leaks in 3rd party libraries. For
; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.
; Default Value: 0
;pm.max_requests = 500

php_value[session.save_handler] = files

php_value[session.save_path] = /var/lib/php/session　　

#伺服器端儲存的會話的路徑，預設沒有建立，需手動建立，並將屬主和屬組修改修改成此程序的屬主和屬組，即apache:apache

"www.conf" 226L, 10018C

[[email protected] localhost]#mkdir -pv /var/lib/php/session　　#建立會話的檔案
[[email protected] localhost]#chown apache:apache /var/lib/php/session　　#修改檔案的屬組屬組為apache:apache
[[email protected] localhost]#systemctl start php-fpm.service　　#啟動php-fpm服務
[[email protected] localhost]#ss -ntl |grep "9000"　　　　　　　　#檢查9000埠是否啟動
LISTEN     0      128    127.0.0.1:9000                     *:* 
[[email protected] localhost]#ps aux | grep "php-fpm"　　　　　　#檢查主程序和子程序是否按照配置生成
root      43438  0.8  1.1 330704 10440 ?        Ss   13:05   0:00 php-fpm: master process (/etc/php-fpm.conf)
apache    43440  0.0  0.5 332788  5060 ?        S    13:05   0:00 php-fpm: pool www
apache    43441  0.0  0.5 332788  5060 ?        S    13:05   0:00 php-fpm: pool www
apache    43442  0.0  0.5 332788  5060 ?        S    13:05   0:00 php-fpm: pool www
apache    43443  0.0  0.5 332788  5060 ?        S    13:05   0:00 php-fpm: pool www
apache    43444  0.0  0.5 332788  5060 ?        S    13:05   0:00 php-fpm: pool www
root      43465  0.0  0.1 112648   964 pts/5    S+   13:07   0:00 grep --color=auto php-fpm

https://www.cnblogs.com/wzhuo/p/6936999.html