PHP-FPM运行状态监控
PHP-FPM内置了一个运行状态页，开启后便可查看PHP-FPM的详细运行状态，可以给我们在优化PHP-FPM时带来帮助。
php-fpm配置
查看php-fpm配置文件
$ /usr/local/php56/sbin/php-fpm -t
[27-Sep-2016 14:59:06] NOTICE: configuration file /usr/local/php56/etc/php-fpm.conf test is successful
开启php-fpm的status配置
vi /usr/local/php56/etc/php-fpm.conf
修改加入：
pm.status_path = /phpfpm_status
配置文件中相关的说明
; 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.
; 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:
; 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/php56/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 = /phpfpm_status
重启PHP-FPM
kill -USR2 `cat /usr/local/php56/var/run/php-fpm.pid`
配置nginx代理
查看nginx配置文件
/usr/local/nginx/sbin/nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
修改配置
vi /usr/local/nginx/conf/nginx.conf
加入：
location /phpfpm_status {
fastcgi_pass 127.0.0.1:9000;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $fastcgi_script_name;
}
重启nginx
/usr/local/nginx/sbin/nginx -s reload
测试
浏览器或者通过curl访问
http://you-server-ip/phpfpm_status
[root@iZwz9g8nzni5lj69dhlesoZ ~]# curl 127.0.0.1/phpfpm_status
pool: www
process manager: dynamic
start time: 27/Sep/2016:15:08:57 +0800
start since: 385
accepted conn: 3
listen queue: 0
max listen queue: 0
listen queue len: 128
idle processes: 1
active processes: 1
total processes: 2
max active processes: 1
max children reached: 0
slow requests: 0
- 参数说明：
| 参数 | 说明 |
|---|---|
| pool | fpm池子名称，大多数为www |
| process manager | 进程管理方式,值：static, dynamic or ondemand. dynamic |
| start time | 启动日期,如果reload了php-fpm，时间会更新 |
| start since | 运行时长 |
| accepted conn | 当前池子接受的请求数 |
| listen queue | 请求等待队列，如果这个值不为0，那么要增加FPM的进程数量 |
| max listen queue | 请求等待队列最高的数量 |
| listen queue len | socket等待队列长度 |
| idle processes | 空闲进程数量 |
| active processes | 活跃进程数量 |
| total processes | 总进程数量 |
| max active processes | 最大的活跃进程数量（FPM启动开始算） |
| max children reached | 大道进程最大数量限制的次数，如果这个数量不为0，那说明你的最大进程数量太小了，请改大一点。 |
| slow requests | 启用了php-fpm slow-log，缓慢请求的数量 |
- php-fpm还提供不同格式的输入，方便我们查看和与其他监控系统对接。
http://www.foo.bar/status #默认纯文本
http://www.foo.bar/status?json #json格式
http://www.foo.bar/status?html #html
http://www.foo.bar/status?xml #xml
- 通过增加full参数，php-fpm还提供查看所有进程的运行状况
http://www.foo.bar/status?full #默认纯文本
http://www.foo.bar/status?json&full #json格式
http://www.foo.bar/status?html&full #html
http://www.foo.bar/status?xml&full #xml
示例：
curl 'http://127.0.0.1/phpfpm_status?full'
pool: www
process manager: dynamic
start time: 27/Sep/2016:15:08:57 +0800
start since: 1546
accepted conn: 14
listen queue: 0
max listen queue: 0
listen queue len: 128
idle processes: 1
active processes: 1
total processes: 2
max active processes: 1
max children reached: 0
slow requests: 0
************************
pid: 12132
state: Running
start time: 27/Sep/2016:15:08:57 +0800
start since: 1546
requests: 7
request duration: 117
request method: GET
request URI: /phpfpm_status?full
content length: 0
user: -
script: /phpfpm_status
last request cpu: 0.00
last request memory: 0
************************
pid: 12133
state: Idle
start time: 27/Sep/2016:15:08:57 +0800
start since: 1546
requests: 7
request duration: 132
request method: GET
request URI: /phpfpm_status?html&full
content length: 0
user: -
script: /phpfpm_status
last request cpu: 0.00
last request memory: 262144
具体进程参数说明
| 参数 | 说明 |
|---|---|
| pid | 进程号 |
| state | 状态（Idle - 闲置， Running - 运行， …） |
| start time | 进程开始运行时间 |
| start since | 进程开始持续时间（单位：秒） |
| requests | 进程已经处理的请求数 |
| request duration | µs的请求数量 |
| request method | 请求方式（GET, POST, …） |
| request URI | 请求URI |
| content length | 请求内容长度（仅限POST请求） |
| user | PHP_AUTH_USER （’-‘， 表示没有限制） |
| script | 请求文件 |
| last request cpu | 最后一次请求占用CPU百分比（如果进程不是处于 Idle - 闲置 状态，该值总是0，因为当请求处理终止时，CPU计算已经完成） |
| last request memory | 最后一次请求占用内存（如果进程不是处于 Idle - 闲置 状态，该值总是0，因为当请求处理终止时，memory计算已经完成） |
Tips:
如果进程处于 idle 状态，所显示的信息就是基于最后一次请求给出的状态，否则就是基于本次请求的状态。