一、php-fpm测试配置及平滑重启方法
#测试php-fpm配置 /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 #启动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 #关闭php-fpm kill -INT `cat /usr/local/php/var/run/php-fpm.pid` #重启php-fpm kill -USR2 `cat /usr/local/php/var/run/php-fpm.pid` 或者通过将安装包中的initd.php-fpm文件复制到/etc/init.d/目录下并授权，可直接进行操作. /etc/init.d/php-fpm start|stop|restart |
二、php-fpm.conf配置文件详解
目前没有对文中的所有文字进行完整的翻译，如果有人需要很详尽的翻译，可以自己翻译下，此处只做简单的说明。
;;;;;;;;;;;;;;;;;;;;; ; FPM Configuration ; ;;;;;;;;;;;;;;;;;;;;; ; All relative paths in this configuration file are relative to PHP's install ; prefix (/usr/local/webserver/php). This prefix can be dynamicaly changed by using the ; '-p' argument from the command line. ;说明此配置文件的路径前缀为php安装路径 ; Include one or more files. If glob(3) exists, it is used to include a bunch of ; files from a glob(3) pattern. This directive can be used everywhere in the ; file. ; Relative path can also be used. They will be prefixed by: ; - the global prefix if it's been set (-p arguement) ; - /usr/local/webserver/php otherwise ;include=etc/fpm.d/*.conf ;;;;;;;;;;;;;;;;;; ; Global Options ; ;全局配置 ;;;;;;;;;;;;;;;;;; [global] ; Pid file ; Note: the default prefix is /usr/local/webserver/php/var ;Default Value: on pid = run/php-fpm.pid ;pid文件默认在php/var/run/下面 ;slowlog = log/slow.log ;慢日志文件，默认是没有指定的。可以进行开启。 ; Error log file ; If it's set to "syslog", log is sent to syslogd instead of being written ; in a local file. ; Note: the default prefix is /usr/local/webserver/php/var ; Default Value: log/php-fpm.log error_log = log/php-fpm.log ;错误日志文件默认页是在php/var/log下面的。 ; syslog_facility is used to specify what type of program is logging the ; message. This lets syslogd specify that messages from different facilities ; will be handled differently. ; See syslog(3) for possible values (ex daemonequiv LOG_DAEMON) ; Default Value: daemon ;syslog.facility = daemon ; syslog_ident is prepended to every message. If you have multiple FPM ; instances running on the same server, you can change the default value ; which must suit common needs. ; Default Value: php-fpm ;syslog.ident = php-fpm ;如果有多个php-fpm那么可以设置在syslog中的标识 ; Log level ; Possible Values: alert, error, warning, notice, debug ; Default Value: notice ;定义记录日志级别，默认是notice级别 log_level = notice ; If this number of child processes exit with SIGSEGV or SIGBUS within the time ; interval set by emergency_restart_interval then FPM will restart. A value ; of '0' means 'Off'. ; Default Value: 0 ;如果达到了设定的时间和数量其余的php-fpm子进程就会被关系，设置为0表示关闭。 ;emergency_restart_threshold = 0 ; Interval of time used by emergency_restart_interval to determine when ; a graceful restart will be initiated. This can be useful to work around ; accidental corruptions in an accelerator's shared memory. ; Available Units: s(econds), m(inutes), h(ours), or d(ays) ; Default Unit: seconds ; Default Value: 0 ; 表示在emergency_restart_interval所设值内出现SIGSEGV或者SIGBUS错误的php-cgi进程数如果超过 emergency_restart_threshold个，php-fpm就会优雅重启。这两个选项一般保持默认值。但笔者设置为60 60s ;emergency_restart_interval = 0 ; Time limit for child processes to wait for a reaction on signals from master. ; Available units: s(econds), m(inutes), h(ours), or d(ays) ; Default Unit: seconds ; Default Value: 0 ;process_control_timeout = 0 #设置子进程接受主进程复用信号的超时时间. 可用单位: s(秒), m(分), h(小时), 或者 d(天) 默认单位: s(秒). 默认值: 0. ; The maximum number of processes FPM will fork. This has been design to control ; the global number of processes when using dynamic PM within a lot of pools. ; Use it with caution. ; Note: A value of 0 indicates no limit ; Default Value: 0 ;当进程数设置为动态的时候，控制进程的最大数，使用此参数要谨慎。 ; process.max = 128 ; Specify the nice(2) priority to apply to the master process (only if set) ; The value can vary from -19 (highest priority) to 20 (lower priority) ; Note: - It will only work if the FPM master process is launched as root ; - The pool process will inherit the master process priority ; unless it specified otherwise ; Default Value: no set ; process.priority = -19 ; Send FPM to background. Set to 'no' to keep FPM in foreground for debugging. ; Default Value: yes ;daemonize = yes ;让php-fpm在后台进行执行，设置为no表示在前台执行，默认是yes。#后台执行fpm,默认值为yes，如果为了调试可以改为no。在FPM中，可以使用不同的设置来运行多个进程池。这些设置可以针对每个进程池单独设置。 ; Set open file descriptor rlimit for the master process. ; Default Value: system defined value ;rlimit_files = 1024 ;设置能够打开的最大文件数，默认是系统设置的限制数量，但是最好还是自己设置。 ; Set max core size rlimit for the master process. ; Possible Values: 'unlimited' or an integer greater or equal to 0 ; Default Value: system defined value ;rlimit_core = 0 ; Specify the event mechanism FPM will use. The following is available: ; - select (any POSIX os) ; - poll (any POSIX os) ; - epoll (linux>= 2.5.44) ; - kqueue (FreeBSD >= 4.1, OpenBSD>= 2.9, NetBSD>= 2.0) ; - /dev/poll (Solaris >= 7) ; - port (Solaris >= 10) ; Default Value: not set (auto detection) ; events.mechanism = epoll ;;;;;;;;;;;;;;;;;;;; ; Pool Definitions ; ;池设置 ;;;;;;;;;;;;;;;;;;;; ; Multiple pools of child processes may be started with different listening ; ports and different management options. The name of the pool will be ; used in logs and stats. There is no limitation on the number of pools which ; FPM can handle. Your system will tell you anyway :) ;可以设置多个pool池，pool池管理不同的子进程资源 ; Start a new pool named 'www'. ; the variable $pool can we used in any directive and will be replaced by the ; pool name ('www' here) ;pool池名称 [www] ; Per pool prefix ; It only applies on the following directives: ; - 'slowlog' ; - 'listen' (unixsocket) ; - 'chroot' ; - 'chdir' ; - 'php_values' ; - 'php_admin_values' ; When not set, the global prefix (or /usr/local/webserver/php) applies instead. ; Note: This directive can also be relative to the global prefix. ; Default Value: none ;prefix = /path/to/pools/$pool ; Unix user/group of processes ; Note: The user is mandatory. If the group is not set, the default user's group ; will be used. ; 启动进程的账户和组 user = www group = www ; The address on which to accept FastCGI requests. ; Valid syntaxes are: ; 'ip.add.re.ss:port' - to listen on a TCP socket to a specific address on ; a specific port; ; 'port' - to listen on a TCP socket to all addresses on a ; specific port; ; '/path/to/unix/socket' - to listen on a unix socket. ; Note: This value is mandatory. ; fpm监听端口，即nginx中php处理的地址，一般默认值即可。可用格式为: 'ip:port', 'port', '/path/to/unix/socket'. 每个进程池都需要设置。 listen = 127.0.0.1:9000 ; Set listen(2) backlog. A value of '-1' means unlimited. ; Default Value: 128 (-1 on FreeBSD and OpenBSD) ; #backlog数，-1表示无限制，由操作系统决定，此行注释掉就行。 ;listen.backlog = -1 ; Set permissions for unix socket, if one is used. In Linux, read/write ; permissions must be set in order to allow connections from a web server. Many ; BSD-derived systems allow connections regardless of permissions. ; Default Values: user and group are set as the running user ; mode is set to 0666 ;listen.owner = nobody ;listen.group = nobody ;listen.mode = 0666 ;unix socket设置选项，如果使用tcp方式访问，这里注释即可。 ; List of ipv4 addresses of FastCGI clients which are allowed to connect. ; Equivalent to the FCGI_WEB_SERVER_ADDRS environment variable in the original ; PHP FCGI (5.2.2+). Makes sense only with a tcp listening socket. Each address ; must be separated by a comma. If this value is left blank, connections will be ; accepted from any ip address. ; Default Value: any ;listen.allowed_clients = 127.0.0.1 ;允许访问FastCGI进程的IP，设置any为不限制IP，如果要设置其他主机的nginx也能访问这台FPM进程，listen处要设置成本地可被访问的IP。默认值是any。每个地址是用逗号分隔. 如果没有设置或者为空，则允许任何服务器请求连接 ; Specify the nice(2) priority to apply to the pool processes (only if set) ; The value can vary from -19 (highest priority) to 20 (lower priority) ; Note: - It will only work if the FPM master process is launched as root ; - The pool processes will inherit the master process priority ; unless it specified otherwise ; Default Value: no set ; priority = -19 ; 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. With this process management, there will be ; always at least 1 children. ; pm.max_children - the maximum number of children that can ; be alive at the same time. ; pm.start_servers - the number of children created on startup. ; pm.min_spare_servers - the minimum number of children in 'idle' ; state (waiting to process). If the number ; of 'idle' processes is less than this ; number then some children will be created. ; pm.max_spare_servers - the maximum number of children in 'idle' ; state (waiting to process). If the number ; of 'idle' processes is greater than this ; number then some children will be killed. ; ondemand - no children are created at startup. Children will be forked when ; new requests will connect. The following parameter are used: ; pm.max_children - the maximum number of children that ; can be alive at the same time. ; pm.process_idle_timeout - The number of seconds after which ; an idle process will be killed. ; Note: This value is mandatory. pm = static ;pm = dynamic #对于专用服务器，pm可以设置为static。 ;如何控制子进程，选项有static和dynamic。如果选择static，则由pm.max_children指定固;定的子进程数。如果选择dynamic，则由下开参数决定： ;pm.max_children #子进程最大数 ;pm.start_servers #启动时的进程数 ;pm.min_spare_servers #，保证空闲进程数最小值，如果空闲进程小于此值，则创建新的子进程 ;pm.max_spare_servers #，保证空闲进程数最大值，如果空闲进程大于此值，此进行清理 ; The number of child processes to be created when pm is set to 'static' and the ; maximum number of child processes when pm is set to 'dynamic' or 'ondemand'. ; 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. The below defaults are based on a server without much resources. Don't ; forget to tweak pm.* to fit your needs. ; Note: Used when pm is set to 'static', 'dynamic' or 'ondemand' ; Note: This value is mandatory. pm.max_children = 150 ; 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 ; 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 ; 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' ;设置系统空闲进程，保证系统能够接收. pm.max_spare_servers = 35 ; The number of seconds after which an idle process will be killed. ; Note: Used only when pm is set to 'ondemand' ; Default Value: 10s ;设置进程空闲几秒之后被关闭 ;pm.process_idle_timeout = 10s; ; 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 ; 设置每个子进程重生之前服务的请求数. 对于可能存在内存泄漏的第三方模块来说是非常有用的. 如果设置为 '0' 则一直接受请求. 等同于 PHP_FCGI_MAX_REQUESTS 环境变量. 默认值: 0. pm.max_requests = 65535 ;设置可以监控php-cgi状态. ; The URI to view the FPM status page. If this value is not set, no URI will be ; recognized as a status page. It shows the following informations: ; pool - the name of the pool; ; process manager - static, dynamic or ondemand; ; start time - the date and time FPM has started; ; start since - number of seconds since FPM has started; ; accepted conn - the number of request accepted by the pool; ; listen queue - the number of request in the queue of pending ; connections (see backlog in listen(2)); ; max listen queue - the maximum number of requests in the queue ; of pending connections since FPM has started; ; listen queue len - the size of the socket queue of pending connections; ; idle processes - the number of idle processes; ; active processes - the number of active processes; ; total processes - the number of idle + active processes; ; max active processes - the maximum number of active processes since FPM ; has started; ; max children reached - number of times, the process limit has been reached, ; when pm tries to start more children (works only for ; pm 'dynamic' and 'ondemand'); ; Value are updated in real time. ; Example output: ; pool: www ; process manager: static ; start time: 01/Jul/2011:17:53:49 +0200 ; start since: 62636 ; accepted conn: 190460 ; listen queue: 0 ; max listen queue: 1 ; listen queue len: 42 ; idle processes: 4 ; active processes: 11 ; total processes: 15 ; max active processes: 12 ; max children reached: 0 ; ; By default the status page output is formatted as text/plain. Passing either ; 'html', 'xml' or 'json' in the query string will return the corresponding ; output syntax. Example: ; http://www.foo.bar/status ; http://www.foo.bar/status?json ; http://www.foo.bar/status?html ; http://www.foo.bar/status?xml ; ; By default the status page only outputs short status. Passing 'full' in the ; query string will also return status for each pool process. ; Example: ; http://www.foo.bar/status?full ; http://www.foo.bar/status?json&full ; http://www.foo.bar/status?html&full ; http://www.foo.bar/status?xml&full ; The Full status returns for each process: ; pid - the PID of the process; ; state - the state of the process (Idle, Running, ...); ; start time - the date and time the process has started; ; start since - the number of seconds since the process has started; ; requests - the number of requests the process has served; ; request duration - the duration in μs of the requests; ; request method - the request method (GET, POST, ...); ; request URI - the request URI with the query string; ; content length - the content length of the request (only with POST); ; user - the user (PHP_AUTH_USER) (or '-' if not set); ; script - the main script called (or '-' if not set); ; last request cpu - the %cpu the last request consumed ; it's always 0 if the process is not in Idle state ; because CPU calculation is done when the request ; processing has terminated; ; last request memory - the max amount of memory the last request consumed ; it's always 0 if the process is not in Idle state ; because memory calculation is done when the request ; processing has terminated; ; If the process is in Idle state, then informations are related to the ; last request the process has served. Otherwise informations are related to ; the current request being served. ; Example output: ; ************************ ; pid: 31330 ; state: Running ; start time: 01/Jul/2011:17:53:49 +0200 ; start since: 63087 ; requests: 12808 ; request duration: 1250261 ; request method: GET ; request URI: /test_mem.php?N=10000 ; content length: 0 ; user: - ; script: /home/fat/web/docs/php/test_mem.php ; last request cpu: 0.00 ; last request memory: 0 ; ; Note: There is a real-time FPM status monitoring sample web page available ; It's available in: /usr/local/webserver/php/share/php/fpm/status.html ; ; Note: The value must start with a leading slash (/). The value can be ; anything, but it may not be a good idea to use the .php extension or it ; may conflict with a real PHP file. ; Default Value: not set ;pm.status_path = /status ; FPM状态页面的网址. 如果没有设置, 则无法访问状态页面. 默认值: none. munin监控会使用到 ; The ping URI to call the monitoring page of FPM. If this value is not set, no ; URI will be recognized as a ping page. This could be used to test from outside ; that FPM is alive and responding, or to ; - create a graph of FPM availability (rrd or such); ; - remove a server from a group if it is not responding (load balancing); ; - trigger alerts for the operating team (24/7). ; Note: The value must start with a leading slash (/). The value can be ; anything, but it may not be a good idea to use the .php extension or it ; may conflict with a real PHP file. ; Default Value: not set ; FPM监控页面的ping网址. 如果没有设置, 则无法访问ping页面. 该页面用于外部检测FPM是否存活并且可以响应请求. 请注意必须以斜线开头 (/)。 ;ping.path = /ping ; 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 ; 用于定义ping请求的返回相应. 返回为 HTTP 200 的 text/plain 格式文本. 默认值: pong ;ping.response = pong ; The access log file ; Default: not set ;access.log = log/$pool.access.log ;接收日志，默认没有设置 ; The access log format. ; The following syntax is allowed ; %%: the '%' character ; %C: %CPU used by the request ; it can accept the following format: ; - %{user}C for user CPU only ; - %{system}C for system CPU only ; - %{total}C for user + system CPU (default) ; %d: time taken to serve the request ; it can accept the following format: ; - %{seconds}d (default) ; - %{miliseconds}d ; - %{mili}d ; - %{microseconds}d ; - %{micro}d ; %e: an environment variable (same as $_ENV or $_SERVER) ; it must be associated with embraces to specify the name of the env ; variable. Some exemples: ; - server specifics like: %{REQUEST_METHOD}e or %{SERVER_PROTOCOL}e ; - HTTP headers like: %{HTTP_HOST}e or %{HTTP_USER_AGENT}e ; %f: script filename ; %l: content-length of the request (for POST request only) ; %m: request method ; %M: peak of memory allocated by PHP ; it can accept the following format: ; - %{bytes}M (default) ; - %{kilobytes}M ; - %{kilo}M ; - %{megabytes}M ; - %{mega}M ; %n: pool name ; %o: ouput header ; it must be associated with embraces to specify the name of the header: ; - %{Content-Type}o ; - %{X-Powered-By}o ; - %{Transfert-Encoding}o ; - .... ; %p: PID of the child that serviced the request ; %P: PID of the parent of the child that serviced the request ; %q: the query string ; %Q: the '?' character if query string exists ; %r: the request URI (without the query string, see %q and %Q) ; %R: remote IP address ; %s: status (response code) ; %t: server time the request was received ; it can accept a strftime(3) format: ; %d/%b/%Y:%H:%M:%S %z (default) ; %T: time the log has been written (the request has finished) ; it can accept a strftime(3) format: ; %d/%b/%Y:%H:%M:%S %z (default) ; %u: remote user ; ; Default: "%R - %u %t \"%m %r\" %s" ;设置接收日志格式 ;access.format = "%R - %u %t \"%m %r%Q%q\" %s %f %{mili}d %{kilo}M %C%%" ; The log file for slow requests ; Default Value: not set ; Note: slowlog is mandatory if request_slowlog_timeout is set ;slowlog = log/$pool.log.slow ;设置慢日志 slowlog = log/slow.log ; 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) ; Default Value: 0 ; #当一个请求该设置的超时时间后，就会将对应的PHP调用堆栈信息完整写入到慢日志中. 设置为 '0' 表示 'Off' request_slowlog_timeout = 20s ; 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 ;设置当一个进程的执行时间，将会被结束，设置为0表示关闭此功能。 request_terminate_timeout = 0 ; Set open file descriptor rlimit. ; Default Value: system defined value ; #设置文件打开描述符的rlimit限制. 默认值: 系统定义值默认可打开句柄是1024，可使用 ulimit -n查看，ulimit -n 2048修改。一般建议和系统打开句柄设置相同。 rlimit_files = 65535 ; Set max core size rlimit. ; Possible Values: 'unlimited' or an integer greater or equal to 0 ; Default Value: system defined value ; 设置核心rlimit最大限制值. 可用值: 'unlimited' 、0或者正整数. 默认值: 系统定义值 ;rlimit_core = 0 ; Chroot to this directory at the start. This value must be defined as an ; absolute path. When this value is not set, chroot is not used. ; Note: you can prefix with '$prefix' to chroot to the pool prefix or one ; of its subdirectories. If the pool prefix is not set, the global prefix ; will be used instead. ; Note: chrooting is a great security feature and should be used whenever ; possible. However, all PHP paths will be relative to the chroot ; (error_log, sessions.save_path, ...). ; Default Value: not set ;设置了chroot之后php只能读取chroot中的内容。建议设置，并且将php设计到的文件路径均包含在此路径内。如:log,pid文件等。默认没有设置。 ;chroot = ; Chdir to this directory at the start. ; Note: relative path can be used. ; Default Value: current directory or / when chroot ; 设置启动目录，启动时会自动Chdir到该目录. 所定义的目录需要是绝对路径. 默认值: 当前目录，或者/目录（chroot时） ;chdir = /var/www ; Redirect worker stdout and stderr into main error log. If not set, stdout and ; stderr will be redirected to /dev/null according to FastCGI specs. ; Note: on highloadedenvironement, this can cause some delay in the page ; process time (several ms). ; Default Value: no ; 重定向运行过程中的stdout和stderr到主要的错误日志文件中. 如果没有设置, stdout 和 stderr 将会根据FastCGI的规则被重定向到 /dev/null . 默认值: 空 catch_workers_output = yes ; Limits the extensions of the main script FPM will allow to parse. This can ; 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 ; exectutephp code. ; Note: set an empty value to allow all extensions. ; Default Value: .php ;security.limit_extensions = .php .php3 .php4 .php5 ; Pass environment variables like LD_LIBRARY_PATH. All $VARIABLEs are taken from ; the current environment. ; Default Value: clean env ;env[HOSTNAME] = $HOSTNAME ;env[PATH] = /usr/local/bin:/usr/bin:/bin ;env[TMP] = /tmp ;env[TMPDIR] = /tmp ;env[TEMP] = /tmp ; 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 ; be overwritten from PHP call 'ini_set'. ; php_admin_value/php_admin_flag - these directives won't be overwritten by ; PHP call 'ini_set' ; For php_*flag, valid values are on, off, 1, 0, true, false, yes or no. ; Pass environment variables like LD_LIBRARY_PATH. All $VARIABLEs are taken from ; the current environment. ; Default Value: clean env ;env[HOSTNAME] = $HOSTNAME ;env[PATH] = /usr/local/bin:/usr/bin:/bin ;env[TMP] = /tmp ;env[TMPDIR] = /tmp ;env[TEMP] = /tmp ; 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 ; be overwritten from PHP call 'ini_set'. ; php_admin_value/php_admin_flag - these directives won't be overwritten by ; PHP call 'ini_set' ; For php_*flag, valid values are on, off, 1, 0, true, false, yes or no. ; Defining 'extension' will load the corresponding shared extension from ; extension_dir. Defining 'disable_functions' or 'disable_classes' will not ; overwrite previously defined php.ini values, but will append the new value ; instead. ; Note: path INI options can be relative and will be expanded with the prefix ; (pool, global or /usr/local/webserver/php) ; Default Value: nothing is defined by default except the values in php.ini and ; specified at startup with the -d argument ;php_admin_value[sendmail_path] = /usr/sbin/sendmail -t -i -f www@my.domain.com ;php_flag[display_errors] = off ;php_admin_value[error_log] = /var/log/fpm-php.www.log ;php_admin_flag[log_errors] = on ;php_admin_value[memory_limit/] = 32M |
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