php-fpm由TCP端口通訊改成Unit socket通訊

php-fpm TCP通訊改成unit socket通訊

原理上來講，unix socket方式確定要比tcp的方式快並且消耗資源少，由於socket之間在nginx和php-fpm的進程之間通訊，而tcp須要通過本地迴環驅動，還要申請臨時端口和tcp相關資源，unix socket會顯得不是那麼穩定，當併發鏈接數爆發時，會產生大量的長時緩存，在沒有面向鏈接協議支撐的狀況下，大數據包頗有可能就直接出錯並不會返回異常。而TCP這樣的面向鏈接的協議，多少能夠保證通訊的正確性和完整性。

touch /var/run/php-fcgi.sock
chmod 777  /var/run/php-fcgi.sock
chown nginx. /var/run/php-fcgi.sock

修改www.conf

listen = /var/run/php-fcgi.sock

listen.owner = nginx
listen.group = nginx
listen.mode = 0666

user = nginx
group = nginx

修改nginx配置文件；

#        fastcgi_pass   127.0.0.1:9000;
        fastcgi_pass unix:/var/run/php-fcgi.sock;

修改sysctl.conf；

# vi /etc/sysctl.conf 
net.ipv4.ip_local_port_range = 1024 65535
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_fin_timeout = 30
# sysctl –p

//上面參數是必須的，1是增長端口數量，2是減小time_wait鏈接過多

先restart php-fpm
而後：nginx -s stop
Nginx
不能用restart，會出錯，解決步驟：

ps -aux | grep nginx | awk ‘{print $2}’| xargs kill -9

進行測試

www.conf示例內容：

[www]

;listen = 127.0.0.1:9000
listen = /var/run/php-fcgi.sock

listen.allowed_clients = 127.0.0.1
listen.owner = nginx
listen.group = nginx
listen.mode = 0666

pm = dynamic
pm.max_children = 1000
pm.start_servers = 150
pm.min_spare_servers = 50
pm.max_spare_servers = 1000
pm.max_requests = 1000

slowlog = /var/log/php-fpm/www-slow.log

php_value[session.save_handler] = files
php_value[session.save_path]    = /var/lib/php/session
php_value[soap.wsdl_cache_dir]  = /var/lib/php/wsdlcache