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install god dame fastgci and fpm on our server.

first of all, need to create a child process of CGI which located in /etc/init.d/php-common-Perso.sh

prefix="/opt/php-5.3.6-full";
exec_prefix=${prefix};

php_fpm_BIN="${exec_prefix}/sbin/php-fpm";
php_fpm_CONF="/home/siteadm/common/php/Perso.conf";
php_fpm_PID="/home/siteadm/common/php/Perso.pid";
php_fpm_INI="/home/siteadm/common/php/Perso.ini";
PHP_INI_SCAN_DIR="/home/siteadm/common/php/vhost";

php_opts="--fpm-config $php_fpm_CONF -c $php_fpm_INI"

export PHP_INI_SCAN_DIR;

. /home/siteadm_admin/template/php/php-fpm-init.sh

the PHP_INI_SCAN_DIR include all specification of fpm for each virtual host of apache: 
[HOST=main.addepi.fr]
open_basedir = "/data/admin/"
doc_root = "/data/admin/web"
mail.log = "/data/admin/app/logs/php.mail.error.log"
short_open_tag = 1
error_log = "/data/admin/app/logs/php.error.log"
default_charset = "utf-8"
and some other package loader like imagick.ini 
; configuration for php imagick module
extension=imagick.so
In fact, Perso.conf is still another php.ini for php-fpm, it contains only three lines: 
pid = /home/siteadm/common/php/Perso.pid
error_log = /home/siteadm/common/log/php-Perso_error.log
include=/home/siteadm/common/php/Perso/*.conf
which is all the child fastcgi defination, here i add a /home/siteadm/common/php/Perso/main-php-default.conf file with: 
[main-default]

catch_workers_output            = yes

listen                                          = /home/siteadm/common/php/Perso/main-php-default.sock
listen.owner                            = root
listen.group                            = hosts
listen.mode                                     = 0660

user                                            = www-data ; normalement nobody
group                                           = hosts

;chroot                                         = /data/admin

pm                                                      = dynamic

pm.max_children                         = 10
pm.start_servers                        = 1
pm.min_spare_servers            = 1
pm.max_spare_servers            = 2
pm.max_requests                         = 500

pm.status_path                          = /fpm-status
ping.path                                       = /fpm-ping
ping.response                           = pong

;slowlog                                                = {LOG_ROOT}/php-main_slow.log
;request_slowlog_timeout                = 5s

; Variables d'environnement
env[TMP]                                        = /data/temp
env[TMPDIR]                                     = /data/temp
env[TEMP]                                       = /data/temp

; Directives de configuration bloquées
;php_admin_flag[param1] = on
php_admin_value[open_basedir] = "/data/admin"
php_admin_value[error_log] = "/data/admin/app/logs/php.error.log"
php_admin_value[mail.log] = "/data/admin/app/logs/php.mail.error.log"
php_admin_value[upload_tmp_dir] = "/data/temp"
php_admin_value[session.save_path] = "/data/temp"
php_admin_value[apc.stat] = "0"
php_admin_value[apc.lazy_functions] = "0"
php_admin_value[apc.lazy_classes] = "0"
in this file, we define all the parameter of this child fastcgi process parameter. include his sock file, user, group temp folder etc. After we done this, need to launch the php-common-Perso.sh, which is also launching /home/siteadm_admin/template/php/php-fpm-init.sh contained by this .sh 
wait_for_pid () {
        try=0

        while test $try -lt 35 ; do

                case "$1" in
                        'created')
                        if [ -f "$2" ] ; then
                                try=''
                                break
                        fi
                        ;;

                        'removed')
                        if [ ! -f "$2" ] ; then
                                try=''
                                break
                        fi
                        ;;
                esac

                echo -n .
                try=`expr $try + 1`
                sleep 1

        done

}

case "$1" in
        start)
                echo -n "Starting php-fpm "

                $php_fpm_BIN $php_opts

                if [ "$?" != 0 ] ; then
                        echo " failed"
                        exit 1
                fi

                wait_for_pid created $php_fpm_PID

                if [ -n "$try" ] ; then
                        echo " failed"
                        exit 1
                else
                        echo " done"
                fi
        ;;

        stop)
                echo -n "Gracefully shutting down php-fpm "

                if [ ! -r $php_fpm_PID ] ; then
                        echo "warning, no pid file found - php-fpm is not running ?"
                        exit 1
                fi

                kill -QUIT `cat $php_fpm_PID`

                wait_for_pid removed $php_fpm_PID

                if [ -n "$try" ] ; then
                        echo " failed. Use force-exit"
                        exit 1
                else
                        echo " done"
                fi
        ;;

        force-quit)
                echo -n "Terminating php-fpm "

                if [ ! -r $php_fpm_PID ] ; then
                        echo "warning, no pid file found - php-fpm is not running ?"
                        exit 1
                fi

                kill -TERM `cat $php_fpm_PID`

                wait_for_pid removed $php_fpm_PID
                if [ -n "$try" ] ; then
                        echo " failed"
                        exit 1
                else
                        echo " done"
                fi
        ;;

        restart)
                $0 stop
                $0 start
        ;;

        reload)

                echo -n "Reload service php-fpm "

                if [ ! -r $php_fpm_PID ] ; then
                        echo "warning, no pid file found - php-fpm is not running ?"
                        exit 1
                fi

                kill -USR2 `cat $php_fpm_PID`

                echo " done"
        ;;

        *)
                echo "Usage: $0 {start|stop|force-quit|restart|reload}"
                exit 1
        ;;

esac
So , we can start our fpm main and child process. and if we type: ps aux | grep main, we should see : 
www-data 24417  0.0  0.9 346424 76508 ?        S    Dec03   0:03 php-fpm: pool main-default
Well, from now we can use this as an external fastcgi socket. so i create an vhost like this: /etc/apache2/sites-available/main 
FastCGIExternalServer /data/admin/cgi-bin/php-default -socket /home/siteadm/common/php/Perso/main-php-default.sock -pass-header Authorization

        DocumentRoot "/data/admin/web"
        ServerName main.addepi.fr
        ServerAlias main.addepi.fr
        ServerAdmin webmaster@addepi.fr
        CustomLog /data/admin/app/logs/apache.access.log combined
        ErrorLog /data/admin/app/logs/apache.error.log
        ScriptAlias /cgi-bin/ /data/admin/cgi-bin/
        Action php-fpm /cgi-bin/php-default

       order allow,deny
       allow from all
       DirectoryIndex app.php
       AddHandler php-fpm .php
       Options -Indexes


        Order allow,deny
        Allow from env=REDIRECT_STATUS
well, you really do not need a file name: /data/admin/cgi-bin/php-default this is an alias of the socket name.
relaunch the apache2, we can visit main.addepi.fr now.
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