Installation and startup of php-fpm

This article mainly introduces the installation and startup of php-fpm. Students who are interested in PHP tutorials can refer to it.

I have studied the mod_php mode, mode_fastcgi and php-fpm mode in php before. I roughly described the differences between several modes and also understood that php-fpm is the manager of fastcgi mode (Address: https:/ /www.zybuluo.com/phper/note/50231). Today let’s take a look at how to install php-fpm in php and run it.

Install php-fpm

My machine is centos 6.2 and php 5.4.11 has been installed before. PHP has written php-fpm into the php source code core after 5.3.3. So there is no need to download it separately. Mine is 5.4.11 so I can use it directly.

Since my php has been installed, and I did not bring the fpm mode when compiling before, I have to find the source code and recompile it:

To make php support php-fpm, I only need to bring - when compiling. -enable-fpm will do the trick.

So, I need to find the previous compilation parameters, add --enable-fpm after it, and recompile. As mentioned before, there are two ways to find the previous compilation parameters:

1. Find config.nice in the source code /lamp/php-5.4.11/, this is the previous compilation parameter

2. Find the Configure related configuration in the php.ini configuration file: /usr/local/php/bin/php -i |grep 'Configure'

Okay, let's start and find the previous compilation parameters:

[root@localhost /]# cd /lamp/php-5.4.11 & vi config.nice
'./configure' \
'--prefix=/usr/local/php' \
'--with-config-file-path=/usr/local/php/etc/' \
'--with-apxs2=/usr/local/apache/bin/apxs' \
'--with-mysql=/usr/local/mysql/' \
'--with-libxml-dir=/usr/local/libxml2/' \
'--with-png-dir=/usr/local/libpng/' \
'--with-jpeg-dir=/usr/local/jpeg8/' \
'--with-freetype-dir=/usr/local/freetype/' \
'--with-gd=/usr/local/gd/' \
'--with-zlib-dir=/usr/local/zlib/' \
'--with-mcrypt=/usr/local/libmcrypt/' \
'--with-mysqli=/usr/local/mysql/bin/mysql_config' \
'--enable-soap' \
'--enable-mbstring=all' \
'--enable-sockets' \

After adding --enable-fpm, recompile:

[root@localhost /]# cd /lamp/php-5.4.11
[root@localhost php-5.4.11]# './configure' \
    '--prefix=/usr/local/php' \
    '--with-config-file-path=/usr/local/php/etc/' \
    '--with-apxs2=/usr/local/apache/bin/apxs' \
    '--with-mysql=/usr/local/mysql/' \
    '--with-libxml-dir=/usr/local/libxml2/' \
    '--with-png-dir=/usr/local/libpng/' \
    '--with-jpeg-dir=/usr/local/jpeg8/' \
    '--with-freetype-dir=/usr/local/freetype/' \
    '--with-gd=/usr/local/gd/' \
    '--with-zlib-dir=/usr/local/zlib/' \
    '--with-mcrypt=/usr/local/libmcrypt/' \
    '--with-mysqli=/usr/local/mysql/bin/mysql_config' \
    '--enable-soap' \
    '--enable-mbstring=all' \
    '--enable-sockets' \
    '--enable-fpm'
[root@localhost php-5.4.11] make && make install

Start php-fpm

After the installation is completed, we try to start:

The startup command is:

/usr/local/php/sbin/php-fpm

The error is reported:

[26-Feb-2015 15:39:55] ERROR: failed to open configuration file '/usr/local/php/etc/php-fpm.conf': No such file or directory (2)

[26-Feb-2015 15:39:55] ERROR: failed to load configuration file '/usr/local/php/etc/php-fpm.conf'

[26-Feb-2015 15:39:55] ERROR: FPM initialization failed

The error message says that php-fpm.conf cannot be found

Oh, it turns out to be php -fpm.conf is not there yet, we go to the /usr/local/php/etc directory and copy php-fpm.conf.default into php-fpm.conf

cd /usr/local/php/etc/

cp php-fpm.conf.default php-fpm.conf

Edit this configuration file:

vim php-fpm.conf
pid = run/php-fpm.pid
user = www
group = www
再次尝试启动：
/usr/local/php/sbin/php-fpm

again An error is reported saying that the www user does not exist:

[26-Feb-2015 15:57:38] ERROR: [pool www] cannot get uid for user 'www'
[26-Feb-2015 15:57:38] ERROR: FPM initialization failed

Okay, let’s create a new www user group:

groupadd www
useradd -g www www

Start it again:

/usr/local/php/sbin/php-fpm

There is no output, indicating success! ! !

php-fpm occupies port 9000. Let’s check the process:

[root@localhost php-5.4.11]# ps -ef|grep php-fpm
root      1377  1231  0 11:19 pts/1    00:00:00 grep php-fpm
root     29249     1  0 06:22 ?        00:00:00 php-fpm: master process (/usr/local/php/etc/php-fpm.conf)
www      29250 29249  0 06:22 ?        00:00:00 php-fpm: pool www
www      29251 29249  0 06:22 ?        00:00:00 php-fpm: pool www
root     32132  6158  0 08:25 pts/2    00:00:00 vi php-fpm.conf

[root@localhost php-5.4.11]# netstat -tnl | grep 9000
tcp        0      0 127.0.0.1:9000              0.0.0.0:*                   LISTEN      
[root@localhost php-5.4.11]#

Okay, the installation and startup are OK.

Start php-fpm at startup

I mentioned before that php-fpm is a layer server independent of the web server and php, so we need to start it at startup

The configuration file for startup is: / etc/rc.local, just add /usr/local/php/sbin/php-fpm

[root@localhost init]# vi /etc/rc.local
#!/bin/sh
#
# This script will be executed *after* all the other init scripts.
# You can put your own initialization stuff in here if you don't
# want to do the full Sys V style init stuff.

touch /var/lock/subsys/local
/usr/local/apache/bin/apachectl start
/usr/local/bin/redis-server /etc/redis.conf
/usr/local/php/sbin/php-fpm

It’s useless just to install php-fpm. It has to be used with the web server. In the next section, I want to learn nginx Install, and connect nginx to php-fpm to use php.

Restart php-fpm

After we install the extension, we need to restart php-fpm to make the extension effective.

The simplest and crudest way to restart php-fpm is:

First find the process number of php-fpm, kill it, and then use /usr/local/php/sbin/php-fpm to start it like this.

In fact, there are more gentle methods, which is to use signals.

INT, TERM: terminate immediately

QUIT: terminate smoothly

USR1: reopen the log file

USR2: smoothly reload all worker processes and reload configuration and binary modules

Example:

php- fpm shutdown:

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

php-fpm restart:

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