LNMP基于FastCGI实现Nginx,PHP,MySQL的分离
[日期:2012-11-12]
来源:Linux社区
作者:laoguang
[字体:大 中 小]
平时安装LNMP是把它们安装到同一台机器上,我想这个对大家来说丝毫没有挑战,下面我们实现把他们剥离到不同的机器上,让各个服务器直接分担原来的压力,也可以增加节点实现负载均衡,如:多增加一台php,让两台机器轮询的编译php,也可以在增加一台nginx,实现dns的轮询负载均衡。
规划:nginx:172.16.1.1
php(FASTCGI):172.16.1.2
MySQL:172.16.1.3
环境:RedHat 5.8 32位,yum可以正常使用,开发包组"Development Tools" "Development Libraries" "X Software Development"已经安装好,如果没有请先安装。SElinux确保已经关闭,iptables先关闭之。
操作步骤:
一.在172.16.1.1编译安装nginx
1.先安装pcre-devel,nginx的rewrite功能依赖pcre提供的库。
# yum -y install pcre-devel
2.为nginx建立用户,实现安全运行,指定uid的原因是为了与php通过nfs共享时权限方便
# groupadd -r -g 5000 nginx
# useradd -r -g nginx -u 5000 nginx
3.下载并编译安装nginx
# wget http://www.nginx.org/download/nginx-1.2.4.tar.gz
# tar xvf nginx-1.2.4.tar.gz
# cd nginx-1.2.4
#./configure \
--prefix=/usr \
--sbin-path=/usr/sbin/nginx \
--conf-path=/etc/nginx/nginx.conf \
--error-log-path=/var/log/nginx/error.log \
--http-log-path=/var/log/nginx/access.log \
--pid-path=/var/run/nginx/nginx.pid \
--lock-path=/var/lock/nginx.lock \
--user=nginx \
--group=nginx \
--with-http_ssl_module \
--with-http_flv_module \
--with-http_stub_status_module \
--with-http_gzip_static_module \
--http-client-body-temp-path=/var/tmp/nginx/client/ \
--http-proxy-temp-path=/var/tmp/nginx/proxy/ \
--http-fastcgi-temp-path=/var/tmp/nginx/fcgi/ \
--http-uwsgi-temp-path=/var/tmp/nginx/uwsgi \
--http-scgi-temp-path=/var/tmp/nginx/scgi \
--with-pcre
##各个选项意思就不讲解了,如果需要理解,请找google吧
# make && make install
4.为nginx提供SysV init脚本
新建文件/etc/rc.d/init.d/nginx,内容如下:
#!/bin/sh
#
# nginx - this script starts and stops the nginx daemon
#
# chkconfig: - 85 15
# description: Nginx is an HTTP(S) server, HTTP(S) reverse \
# proxy and IMAP/POP3 proxy server
# processname: nginx
# config: /etc/nginx/nginx.conf
# config: /etc/sysconfig/nginx
# pidfile: /var/run/nginx.pid
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
# Check that networking is up.
[ "$NETWORKING" = "no" ] && exit 0
nginx="/usr/sbin/nginx"
prog=$(basename $nginx)
NGINX_CONF_FILE="/etc/nginx/nginx.conf"
[ -f /etc/sysconfig/nginx ] && . /etc/sysconfig/nginx
lockfile=/var/lock/subsys/nginx
make_dirs() {
# make required directories
user=`nginx -V 2>&1 | grep "configure arguments:" | sed 's/[^*]*--user=\([^ ]*\).*/\1/g' -`
options=`$nginx -V 2>&1 | grep 'configure arguments:'`
for opt in $options; do
if [ `echo $opt | grep '.*-temp-path'` ]; then
value=`echo $opt | cut -d "=" -f 2`
if [ ! -d "$value" ]; then
# echo "creating" $value
mkdir -p $value && chown -R $user $value
fi
fi
done
}
start() {
[ -x $nginx ] || exit 5
[ -f $NGINX_CONF_FILE ] || exit 6
make_dirs
echo -n $"Starting $prog: "
daemon $nginx -c $NGINX_CONF_FILE
retval=$?
echo
[ $retval -eq 0 ] && touch $lockfile
return $retval
}
stop() {
echo -n $"Stopping $prog: "
killproc $prog -QUIT
retval=$?
echo
[ $retval -eq 0 ] && rm -f $lockfile
return $retval
}
restart() {
configtest || return $?
stop
sleep 1
start
}
reload() {
configtest || return $?
echo -n $"Reloading $prog: "
killproc $nginx -HUP
RETVAL=$?
echo
}
force_reload() {
restart
}
configtest() {
$nginx -t -c $NGINX_CONF_FILE
}
rh_status() {
status $prog
}
rh_status_q() {
rh_status >/dev/null 2>&1
}
case "$1" in
start)
rh_status_q && exit 0
$1
;;
stop)
rh_status_q || exit 0
$1
;;
restart|configtest)
$1
;;
reload)
rh_status_q || exit 7
$1
;;
force-reload)
force_reload
;;
status)
rh_status
;;
condrestart|try-restart)
rh_status_q || exit 0
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload|configtest}"
exit 2
esac
为此脚本赋予执行权限:
# chmod +x /etc/rc.d/init.d/nginx
添加至服务管理列表,并让其开机自动启动:
# chkconfig --add nginx
# chkconfig nginx on
启动服务并测试
# service nginx start
直接访问172.16.1.1查看是否有nginx的欢迎信息,如果有代表nginx安装一切正常。