LVS-NAT负载均衡PHP应用（Wordpress、Discuz）

1 实验拓扑

2 需求

• RS-01和RS-02对外提供WEB服务。
• RS-01搭建LAMP，PHP通过http模块方式提供。
• RS-02搭建LAMP，PHP通过fpm方式提供。
• RS-01和RS-02之间的关系。
  • RS-01对外提供NFS服务，作为两个LAMP环境的共享存储，负责存储用户上传的资源，例如：图片、文档等。
  • RS-02对外提供Mariadb服务，作为两台LAMP环境的共享数据库，负责存储用户的帖子、文字等。
• 对外提供的域名为www.example.com
  建议现将下面的文章全部浏览完成，再做实验。

3 软件版本

本次使用root用户进行安装，软件全部在每台设备的/root/目录下
apr-1.6.3.tar.bz2
apr-util-1.6.1.tar.bz2
Discuz_X3.1_SC_UTF8.zip
httpd-2.4.6.tar.bz2
mariadb-5.5.46-linux-x86_64.tar.gz
phpMyAdmin-4.0.10.20-all-languages.zip
wordpress-4.7.4-zh_CN.tar.gz
php-5.3.27.tar.gz

4 VS配置

一共部署了3个软件，wordpress、discuz、phpMyAdmin；
wordpress和discuz工作在rr模式下也可以正常的访问网页不会出现session超时的现象，可以访问速度非常慢；如果将模式改为sh或者删除一个rs主机，速度就快起来了；
phpMyAdmin工作在rr模式下会提示session超时；

sysctl -w net.ipv4.ip_forward=1
yum -y install ipvsadm
ipvsadm -A -t 10.207.51.113:80 -s rr
ipvsadm -a -t 10.207.51.113:80 -r 10.0.0.101:80 -m
ipvsadm -a -t 10.207.51.113:80 -r 10.0.0.102:80 -m

5 RS_01部署NFS

因为NFS是共享存储，RS-01和RS-02都需要使用，所以提前部署。

yum install -y rpcbind nfs-utils &&
echo '/nfsdata/wordpress    10.0.0.0/24(rw,sync,root_squash,all_squash,anonuid=48,anongid=48)' >/etc/exports &&
echo '/nfsdata/discuz    10.0.0.0/24(rw,sync,root_squash,all_squash,anonuid=48,anongid=48)' >>/etc/exports &&
mkdir -p /nfsdata/wordpress &&
mkdir -p /nfsdata/discuz &&
systemctl start rpcbind &&
systemctl start nfs &&
systemctl enable rpcbind &&
systemctl enable nfs

[root@rs_01 ~]# showmount -e
Export list for rs_01:
/nfsdata/discuz    10.0.0.0/24
/nfsdata/wordpress 10.0.0.0/24

注意：要确保RS-01和RS-02上的apache用户的UID和GID都是48

6 RS_02部署Mariadb

因为Mariadb是共享数据库，RS-01和RS-02都需要使用，所以提前部署。

tar -xf mariadb-5.5.46-linux-x86_64.tar.gz -C /usr/local/ &&
cd /usr/local/ &&
useradd -r -M -s /sbin/nologin mysql &&
ln -sv mariadb-5.5.46-linux-x86_64 mysql &&
chown -R mysql.mysql  mysql/ &&
mkdir /databases &&
cd mysql/ &&
cp support-files/my-huge.cnf /etc/my.cnf &&
sed -i "/[mysqld]/a datadir = /databases
innodb_file_per_table = on
skip_name_resolve = on" /etc/my.cnf &&
./scripts/mysql_install_db --user=mysql --datadir=/databases --basedir=/usr/local/mysql &&
touch /var/log/mysqld.log &&
chown mysql:mysql /var/log/mysqld.log &&
echo 'PATH=$PATH:/usr/local/mysql/bin' >  /etc/profile.d/mariadb.sh &&
source /etc/profile.d/mariadb.sh &&
echo 'MANPATH_MAP /usr/local/apache2/bin    /usr/local/apache2/man' >>/etc/man_db.conf && 
manpath &&
ln -sv /usr/local/mysql/include /usr/include/mysql &&
echo '/usr/local/mysql/lib/' > /etc/ld.so.conf.d/mariadb.conf &&
ldconfig &&
cp support-files/mysql.server /etc/init.d/mysqld &&
chkconfig --add mysqld &&
chkconfig --list mysqld &&
sleep 3 &&
service mysqld start

----------------------------------------------------------------------------------------------

mysql -h127.0.0.1 -uroot
CREATE DATABASE wordpress;
CREATE DATABASE discuz;
SET PASSWORD FOR 'root'@'127.0.0.1' =  PASSWORD('123123');
SET PASSWORD FOR 'root'@'localhost' =  PASSWORD('123123');
CREATE USER 'wordpress'@'10.0.0.%' IDENTIFIED BY '123123';
CREATE USER 'wordpress'@'127.0.0.1' IDENTIFIED BY '123123';
GRANT ALL ON wordpress.* TO 'wordpress'@'127.0.0.1';
GRANT ALL ON wordpress.* TO 'wordpress'@'10.0.0.%';
CREATE USER 'discuz'@'10.0.0.%' IDENTIFIED BY '123123';
CREATE USER 'discuz'@'127.0.0.1' IDENTIFIED BY '123123';
GRANT ALL ON discuz.* TO 'discuz'@'127.0.0.1';
GRANT ALL ON discuz.* TO 'discuz'@'10.0.0.%';
exit

7 RS_01

7.1 部署HTTP

vim /etc/sysconfig/httpd
# Configuration file for the httpd service.

#
# The default processing model (MPM) is the process-based
# 'prefork' model.  A thread-based model, 'worker', is also
# available, but does not work with some modules (such as PHP).
# The service must be stopped before changing this variable.
#
HTTPD=/usr/local/apache2/bin/httpd

#
# To pass additional options (for instance, -D definitions) to the
# httpd binary at startup, set OPTIONS here.
#
#OPTIONS=

#
# By default, the httpd process is started in the C locale; to
# change the locale in which the server runs, the HTTPD_LANG
# variable can be set.
#
#HTTPD_LANG=C

#
# By default, the httpd process will create the file
# /usr/local/apache2/logs/httpd.pid in which it records its process
# identification number when it starts.  If an alternate location is
# specified in httpd.conf (via the PidFile directive), the new
# location needs to be reported in the PIDFILE.
#
#PIDFILE=/usr/local/apache2/logs/httpd.pid


------------------------------------------------------------------------------------


vim /etc/rc.d/init.d/httpd
#!/bin/bash
#
# httpd        Startup script for the Apache HTTP Server
#
# chkconfig: - 85 15
# description: The Apache HTTP Server is an efficient and extensible  
#           server implementing the current HTTP standards.
# processname: httpd
# config: /etc/httpd/httpd.conf
# config: /etc/sysconfig/httpd
# pidfile: /usr/local/apache2/logs/httpd.pid
#
### BEGIN INIT INFO
# Provides: httpd
# Required-Start: $local_fs $remote_fs $network $named
# Required-Stop: $local_fs $remote_fs $network
# Should-Start: distcache
# Short-Description: start and stop Apache HTTP Server
# Description: The Apache HTTP Server is an extensible server
#  implementing the current HTTP standards.
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

if [ -f /etc/sysconfig/httpd ]; then
        . /etc/sysconfig/httpd
fi

# Start httpd in the C locale by default.
HTTPD_LANG=${HTTPD_LANG-"C"}

# This will prevent initlog from swallowing up a pass-phrase prompt if
# mod_ssl needs a pass-phrase from the user.
INITLOG_ARGS=""

# Set HTTPD=/usr/sbin/httpd.worker in /etc/sysconfig/httpd to use a server
# with the thread-based "worker" MPM; BE WARNED that some modules may not
# work correctly with a thread-based MPM; notably PHP will refuse to start.

# Path to the apachectl script, server binary, and short-form for messages.
apachectl=/usr/local/apache2/bin/apachectl
httpd=${HTTPD-/usr/local/apache2/bin/httpd}
prog=httpd
pidfile=${PIDFILE-/usr/local/apache2/logs/httpd.pid}
lockfile=${LOCKFILE-/var/lock/subsys/httpd}
RETVAL=0
STOP_TIMEOUT=${STOP_TIMEOUT-10}

# The semantics of these two functions differ from the way apachectl does
# things -- attempting to start while running is a failure, and shutdown
# when not running is also a failure.  So we just do it the way init scripts
# are expected to behave here.
start() {
        echo -n $"Starting $prog: "
        LANG=$HTTPD_LANG daemon --pidfile=${pidfile} $httpd $OPTIONS
        RETVAL=$?
        echo
        [ $RETVAL = 0 ] && touch ${lockfile}
        return $RETVAL
}

# When stopping httpd, a delay (of default 10 second) is required
# before SIGKILLing the httpd parent; this gives enough time for the
# httpd parent to SIGKILL any errant children.
stop() {
    status -p ${pidfile} $httpd > /dev/null
    if [[ $? = 0 ]]; then
        echo -n $"Stopping $prog: "
        killproc -p ${pidfile} -d ${STOP_TIMEOUT} $httpd
    else
        echo -n $"Stopping $prog: "
        success
    fi
    RETVAL=$?
    echo
    [ $RETVAL = 0 ] && rm -f ${lockfile} ${pidfile}
}

reload() {
    echo -n $"Reloading $prog: "
    if ! LANG=$HTTPD_LANG $httpd $OPTIONS -t >&/dev/null; then
        RETVAL=6
        echo $"not reloading due to configuration syntax error"
        failure $"not reloading $httpd due to configuration syntax error"
    else
        # Force LSB behaviour from killproc
        LSB=1 killproc -p ${pidfile} $httpd -HUP
        RETVAL=$?
        if [ $RETVAL -eq 7 ]; then
            failure $"httpd shutdown"
        fi
    fi
    echo
}

# See how we were called.
case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  status)
        status -p ${pidfile} $httpd
    RETVAL=$?
    ;;
  restart)
    stop
    start
    ;;
  condrestart|try-restart)
    if status -p ${pidfile} $httpd >&/dev/null; then
        stop
        start
    fi
    ;;
  force-reload|reload)
        reload
    ;;
  graceful|help|configtest|fullstatus)
    $apachectl $@
    RETVAL=$?
    ;;
  *)
    echo $"Usage: $prog {start|stop|restart|condrestart|try-restart|force-reload|reload|status|fullstatus|graceful|help|configtest}"
    RETVAL=2
esac

exit $RETVAL


---------------------------------------------------------------------------


chmod +x /etc/init.d/httpd &&
yum groupinstall -y "Development tools" && 
yum install -y expat-devel openssl-devel pcre-devel && 
tar -xf apr-1.6.3.tar.bz2 && 
tar -xf apr-util-1.6.1.tar.bz2 && 
tar -xf httpd-2.4.6.tar.bz2 && 
cd apr-1.6.3/ && 
./configure -prefix=/usr/local/apr-1.6.3 && 
make && make install && 
cd ../apr-util-1.6.1/ && 
./configure -prefix=/usr/local/apr-unil-1.6.1 --with-apr=/usr/local/apr-1.6.3 && 
make && make install && 
cd ../httpd-2.4.6/ && 
cp -r ../apr-1.6.3 ./srclib/apr && 
cp -r ../apr-util-1.6.1 ./srclib/apr-util && 
./configure  --prefix=/usr/local/apache2 
--with-apr=/usr/local/apr-1.6.3 
--with-apr-util=/usr/local/apr-unil-1.6.1 
--with-included-apr 
--sysconfdir=/etc/httpd 
--enable-so 
--enable-mpms-shared=all 
--enable-mods-shared=all 
--with-mpm=prefork && 
make && 
make install && 
chmod 755 /etc/init.d/httpd && 
chkconfig --add httpd && 
chkconfig --level 3 httpd on && 
echo "export PATH=$PATH:/usr/local/apache2/bin" > /etc/profile.d/apache2.sh && 
source /etc/profile.d/apache2.sh && 
sed -i -e "//opt/sbin/a MANPATH_MAP /usr/local/apache2/bin    /usr/local/apache2/man" /etc/man_db.conf && 
manpath && 
ln -sv /usr/local/apache2/include /usr/include/httpd && 
echo "/usr/local/apache2/lib" > /etc/ld.so.conf.d/httpd.conf && 
ldconfig && 
sed -i "s#User daemon#User apache#g" /etc/httpd/httpd.conf && 
sed -i "s#Group daemon#Group apache#g" /etc/httpd/httpd.conf && 
sed -ri "s#^#(ServerName www.example.com:80)#1#g" /etc/httpd/httpd.conf &&
groupadd -g 48 apache && 
useradd -u 48 -g 48 -M -s /sbin/nologin apache && 
sleep 3 && 
service httpd start

7.2 PHP

yum install -y zlib-devel libxml2-devel libjpeg-devel  libjpeg-turbo-devel libiconv-devel freetype-devel libpng-devel gd-devel libcurl-devel libxslt-devel libxslt-devel openssl-devel libmcrypt-devel  libtool-ltdl-devel gcc gcc-c++ && 
tar -xf php-5.3.27.tar.gz && 
cd php-5.3.27 && 
useradd -r -M -s /sbin/nologin php && 
./configure --prefix=/usr/local/php 
--sysconfdir=/etc 
--with-apxs2=/usr/local/apache2/bin/apxs 
--with-mysql=mysqlnd 
--with-pdo-mysql=mysqlnd 
--with-iconv-dir=/usr/local/libiconv 
--with-libxml-dir=/usr 
--with-freetype-dir 
--with-jpeg-dir 
--with-png-dir 
--with-zlib 
--enable-xml 
--disable-rpath 
--enable-bcmath 
--enable-shmop 
--enable-sysvsem 
--enable-inline-optimization 
--with-curl 
--enable-mbregex 
--enable-mbstring 
--with-mcrypt 
--with-openssl 
--with-gd 
--enable-gd-native-ttf 
--with-openssl 
--with-mhash 
--enable-pcntl 
--enable-sockets 
--with-xmlrpc 
--enable-soap 
--enable-short-tags 
--enable-static 
--with-xsl 
--enable-ftp 
--with-config-file-path=/etc 
--with-config-file-scan-dir=/etc/php.d && 
make && 
make install && 
echo 'PATH=$PATH:/usr/local/php/bin' >  /etc/profile.d/php.sh && 
source /etc/profile.d/php.sh && 
sed -i -e "//opt/sbin/a MANPATH_MAP     /usr/local/php/bin      /usr/local/php/man" /etc/man_db.conf && 
manpath && 
ln -sv /usr/local/php/include  /usr/include/php && 
cp php.ini-production /etc/php.ini && 
sed -i -r 's#^;(date.timezone =)#1 Asia/Shanghai#g' /etc/php.ini && 
chown -R php:php /etc/php.ini && 
chown -R php:php /usr/local/php && 
sed -i 's#DirectoryIndex index.html#DirectoryIndex index.html index.php#g' /etc/httpd/httpd.conf && 
sed -i "/<IfModule mime_module>/a     AddType application/x-httpd-php .php
    AddType applicaiton/x-httpd-php-source .phps" /etc/httpd/httpd.conf && 
sed -i "s#/usr/local/apache2/htdocs#/data/www#g" /etc/httpd/httpd.conf &&
sleep 3 &&
service httpd restart

7.3 Wordpress

mkdir -p /data/www/  &&
tar -xf wordpress-4.7.4-zh_CN.tar.gz -C /data/www/  &&
cp -r /data/www/wordpress/wp-content/* /nfsdata/wordpress/  &&
mv /data/www/wordpress/wp-content /data/www/wordpress/wp-content.bak  &&
mkdir /data/www/wordpress/wp-content  &&
chown -R apache: /data/www/wordpress/  &&
mount --bind /nfsdata/wordpress /data/www/wordpress/wp-content  &&
cd /data/www/  &&
cp wordpress/wp-config-sample.php  wordpress/wp-config.php  &&
sed -i 's#database_name_here#wordpress#g' wordpress/wp-config.php  &&
sed -i 's#username_here#wordpress#g' wordpress/wp-config.php  &&
sed -i 's#password_here#123123#g' wordpress/wp-config.php  &&
sed -i 's#localhost#10.0.0.102#g' wordpress/wp-config.php  &&
chown -R apache:apache /data/www/wordpress/  &&
service httpd restart

在浏览器中输入下面的链接安装wordpress
http://10.0.0.101/wordpress/wp-admin/setup-config.php

在本次环境中，使用上面这个链接安装是不对的，要使用最后绑定给VIP的域名（www.example.com）来安装wordpress，不要直接使用RS-01的IP来安装，具体原因见下文，此处假定使用了上面的安装方式；
正确安装方式：将www.example.com临时解析为10.0.0.101；然后执行安装http://www.example.com/wordpress/wp-admin/setup-config.php

8 RS-02

8.1 HTTP

vim /etc/sysconfig/httpd
# Configuration file for the httpd service.

#
# The default processing model (MPM) is the process-based
# 'prefork' model.  A thread-based model, 'worker', is also
# available, but does not work with some modules (such as PHP).
# The service must be stopped before changing this variable.
#
HTTPD=/usr/local/apache2/bin/httpd

#
# To pass additional options (for instance, -D definitions) to the
# httpd binary at startup, set OPTIONS here.
#
#OPTIONS=

#
# By default, the httpd process is started in the C locale; to
# change the locale in which the server runs, the HTTPD_LANG
# variable can be set.
#
#HTTPD_LANG=C

#
# By default, the httpd process will create the file
# /usr/local/apache2/logs/httpd.pid in which it records its process
# identification number when it starts.  If an alternate location is
# specified in httpd.conf (via the PidFile directive), the new
# location needs to be reported in the PIDFILE.
#
#PIDFILE=/usr/local/apache2/logs/httpd.pid


------------------------------------------------------------------------------


vim /etc/rc.d/init.d/httpd
#!/bin/bash
#
# httpd        Startup script for the Apache HTTP Server
#
# chkconfig: - 85 15
# description: The Apache HTTP Server is an efficient and extensible  
#           server implementing the current HTTP standards.
# processname: httpd
# config: /etc/httpd/httpd.conf
# config: /etc/sysconfig/httpd
# pidfile: /usr/local/apache2/logs/httpd.pid
#
### BEGIN INIT INFO
# Provides: httpd
# Required-Start: $local_fs $remote_fs $network $named
# Required-Stop: $local_fs $remote_fs $network
# Should-Start: distcache
# Short-Description: start and stop Apache HTTP Server
# Description: The Apache HTTP Server is an extensible server
#  implementing the current HTTP standards.
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

if [ -f /etc/sysconfig/httpd ]; then
        . /etc/sysconfig/httpd
fi

# Start httpd in the C locale by default.
HTTPD_LANG=${HTTPD_LANG-"C"}

# This will prevent initlog from swallowing up a pass-phrase prompt if
# mod_ssl needs a pass-phrase from the user.
INITLOG_ARGS=""

# Set HTTPD=/usr/sbin/httpd.worker in /etc/sysconfig/httpd to use a server
# with the thread-based "worker" MPM; BE WARNED that some modules may not
# work correctly with a thread-based MPM; notably PHP will refuse to start.

# Path to the apachectl script, server binary, and short-form for messages.
apachectl=/usr/local/apache2/bin/apachectl
httpd=${HTTPD-/usr/local/apache2/bin/httpd}
prog=httpd
pidfile=${PIDFILE-/usr/local/apache2/logs/httpd.pid}
lockfile=${LOCKFILE-/var/lock/subsys/httpd}
RETVAL=0
STOP_TIMEOUT=${STOP_TIMEOUT-10}

# The semantics of these two functions differ from the way apachectl does
# things -- attempting to start while running is a failure, and shutdown
# when not running is also a failure.  So we just do it the way init scripts
# are expected to behave here.
start() {
        echo -n $"Starting $prog: "
        LANG=$HTTPD_LANG daemon --pidfile=${pidfile} $httpd $OPTIONS
        RETVAL=$?
        echo
        [ $RETVAL = 0 ] && touch ${lockfile}
        return $RETVAL
}

# When stopping httpd, a delay (of default 10 second) is required
# before SIGKILLing the httpd parent; this gives enough time for the
# httpd parent to SIGKILL any errant children.
stop() {
    status -p ${pidfile} $httpd > /dev/null
    if [[ $? = 0 ]]; then
        echo -n $"Stopping $prog: "
        killproc -p ${pidfile} -d ${STOP_TIMEOUT} $httpd
    else
        echo -n $"Stopping $prog: "
        success
    fi
    RETVAL=$?
    echo
    [ $RETVAL = 0 ] && rm -f ${lockfile} ${pidfile}
}

reload() {
    echo -n $"Reloading $prog: "
    if ! LANG=$HTTPD_LANG $httpd $OPTIONS -t >&/dev/null; then
        RETVAL=6
        echo $"not reloading due to configuration syntax error"
        failure $"not reloading $httpd due to configuration syntax error"
    else
        # Force LSB behaviour from killproc
        LSB=1 killproc -p ${pidfile} $httpd -HUP
        RETVAL=$?
        if [ $RETVAL -eq 7 ]; then
            failure $"httpd shutdown"
        fi
    fi
    echo
}

# See how we were called.
case "$1" in
  start)
    start
    ;;
  stop)
    stop
    ;;
  status)
        status -p ${pidfile} $httpd
    RETVAL=$?
    ;;
  restart)
    stop
    start
    ;;
  condrestart|try-restart)
    if status -p ${pidfile} $httpd >&/dev/null; then
        stop
        start
    fi
    ;;
  force-reload|reload)
        reload
    ;;
  graceful|help|configtest|fullstatus)
    $apachectl $@
    RETVAL=$?
    ;;
  *)
    echo $"Usage: $prog {start|stop|restart|condrestart|try-restart|force-reload|reload|status|fullstatus|graceful|help|configtest}"
    RETVAL=2
esac

exit $RETVAL


------------------------------------------------------------------------------------


chmod +x /etc/init.d/httpd &&
yum groupinstall -y "Development tools" && 
yum install -y expat-devel openssl-devel pcre-devel && 
tar -xf apr-1.6.3.tar.bz2 && 
tar -xf apr-util-1.6.1.tar.bz2 && 
tar -xf httpd-2.4.6.tar.bz2 && 
cd apr-1.6.3/ && 
./configure -prefix=/usr/local/apr-1.6.3 && 
make && make install && 
cd ../apr-util-1.6.1/ && 
./configure -prefix=/usr/local/apr-unil-1.6.1 --with-apr=/usr/local/apr-1.6.3 && 
make && make install && 
cd ../httpd-2.4.6/ && 
cp -r ../apr-1.6.3 ./srclib/apr && 
cp -r ../apr-util-1.6.1 ./srclib/apr-util && 
./configure  --prefix=/usr/local/apache2 
--with-apr=/usr/local/apr-1.6.3 
--with-apr-util=/usr/local/apr-unil-1.6.1 
--with-included-apr 
--sysconfdir=/etc/httpd 
--enable-so 
--enable-mpms-shared=all 
--enable-mods-shared=all 
--with-mpm=prefork && 
make && 
make install && 
chmod 755 /etc/init.d/httpd && 
chkconfig --add httpd && 
chkconfig --level 3 httpd on && 
echo "export PATH=$PATH:/usr/local/apache2/bin" > /etc/profile.d/apache2.sh && 
source /etc/profile.d/apache2.sh && 
sed -i -e "//opt/sbin/a MANPATH_MAP /usr/local/apache2/bin    /usr/local/apache2/man" /etc/man_db.conf && 
manpath && 
ln -sv /usr/local/apache2/include /usr/include/httpd && 
echo "/usr/local/apache2/lib" > /etc/ld.so.conf.d/httpd.conf && 
ldconfig && 
sed -i "s#User daemon#User apache#g" /etc/httpd/httpd.conf && 
sed -i "s#Group daemon#Group apache#g" /etc/httpd/httpd.conf && 
sed -ri "s#^#(ServerName www.example.com:80)#1#g" /etc/httpd/httpd.conf &&
groupadd -g 48 apache && 
useradd -u 48 -g 48 -M -s /sbin/nologin apache && 
sleep 3 && 
service httpd start

8.2 PHP

yum install -y zlib-devel libxml2-devel libjpeg-devel  libjpeg-turbo-devel libiconv-devel freetype-devel libpng-devel gd-devel  libcurl-devel libxslt-devel libxslt-devel openssl-devel libmcrypt-devel  libtool-ltdl-devel gcc gcc-c++ &&
useradd -r -M -s /sbin/nologin php &&
tar -xf php-5.3.27.tar.gz &&
cd php-5.3.27 &&
./configure 
--prefix=/usr/local/php 
--sysconfdir=/etc/ 
--with-mysql=/usr/local/mysql 
--with-pdo-mysql=mysqlnd 
--with-iconv-dir=/usr/local/libiconv 
--with-freetype-dir 
--with-jpeg-dir 
--with-png-dir 
--with-zlib 
--with-libxml-dir=/usr 
--enable-xml 
--disable-rpath 
--enable-bcmath 
--enable-shmop 
--enable-sysvsem 
--enable-inline-optimization 
--with-curl 
--enable-mbregex 
--enable-fpm 
--enable-mbstring 
--with-mcrypt 
--with-openssl 
--with-gd 
--enable-gd-native-ttf 
--with-openssl 
--with-mhash 
--enable-pcntl 
--enable-sockets 
--with-xmlrpc 
--enable-soap 
--enable-short-tags 
--enable-static 
--with-xsl 
--with-fpm-user=php 
--with-fpm-group=php 
--enable-ftp 
--with-config-file-path=/etc 
--with-config-file-scan-dir=/etc/php.d &&
make &&
make install &&
echo 'PATH=$PATH:/usr/local/php/bin' >  /etc/profile.d/php.sh &&
source /etc/profile.d/php.sh &&
sed -i "//opt/sbin/a MANPATH_MAP     /usr/local/php/bin      /usr/local/php/man" /etc/man_db.conf &&
manpath &&
ln -sv /usr/local/php/include /usr/include/php &&
cp sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm &&
chmod +x /etc/init.d/php-fpm &&
chkconfig --add php-fpm &&
cp php.ini-production /etc/php.ini &&
sed -i -r 's#^(pdo_mysql.default_socket=)#1/usr/local/mysql/mysql.sock#g' /etc/php.ini && 
sed -i -r 's#^;(date.timezone =)#1 Asia/Shanghai#g' /etc/php.ini &&
mv /etc/php-fpm.conf.default /etc/php-fpm.conf &&
chown php:php /etc/php.ini &&
chown -R php:php /usr/local/php &&
sed -i "s#/usr/local/apache2/htdocs#/data/www#g" /etc/httpd/httpd.conf &&
sed -i 's#DirectoryIndex index.html#DirectoryIndex index.html index.php#g' /etc/httpd/httpd.conf &&
sed -i 's#^#LoadModule proxy_module modules/mod_proxy.so#LoadModule proxy_module modules/mod_proxy.so#g' /etc/httpd/httpd.conf &&
sed -i 's#^#LoadModule proxy_fcgi_module modules/mod_proxy_fcgi.so#LoadModule proxy_fcgi_module modules/mod_proxy_fcgi.so#g' /etc/httpd/httpd.conf &&
sed -i "/<IfModule mime_module>/a     AddType application/x-httpd-php .php
    AddType applicaiton/x-httpd-php-source .phps" /etc/httpd/httpd.conf &&
echo -e 'ProxyRequests Off
ProxyPassMatch ^/(.*.php)$ fcgi://127.0.0.1:9000/data/www/$1' >> /etc/httpd/httpd.conf &&
sleep 3 &&
service php-fpm start
service httpd restart

8.3 Wordpress

其实将RS-01的wordpress目录复制过来就行，然后为/data/wordpress/wp-content并挂在共享存储，最后更改一下属主属组为apache，
如果挂在不上需要查看网络原因，可以先安装nfs-utils，然后使用showmount -e 10.0.0.101命令查看可挂载的目录

yum install -y rpcbind &&
systemctl start rpcbind &&
systemctl enable rpcbind &&
mkdir -p /data/www/  &&
tar -xf wordpress-4.7.4-zh_CN.tar.gz -C /data/www/  &&
mv /data/www/wordpress/wp-content /data/www/wordpress/wp-content.bak  &&
mkdir /data/www/wordpress/wp-content  &&
chown -R apache: /data/www/wordpress/  &&
mount -t nfs -o bg,timeo=300,soft,retrans=50,rsize=180000,wsize=180000,rw,noexec,sync 10.0.0.101:/nfsdata/wordpress /data/www/wordpress/wp-content/  &&
cd /data/www/  &&
cp wordpress/wp-config-sample.php  wordpress/wp-config.php  &&
sed -i 's#database_name_here#wordpress#g' wordpress/wp-config.php  &&
sed -i 's#username_here#wordpress#g' wordpress/wp-config.php  &&
sed -i 's#password_here#123123#g' wordpress/wp-config.php  &&
sed -i 's#localhost#10.0.0.102#g' wordpress/wp-config.php  &&
chown -R apache:apache /data/www/wordpress/

9 故障解决

部署完RS-01的LAMP环境之后，挂载了共享存储作为wordpress的用户上传文件的目录，并且安装了wordpress，然后测试登录，发布文章，发现没问题。
部署完RS-02的LAMP环境之后，挂载了共享存储作为wordpress的用户上传文件的目录，并且安装了wordpress（和RS-01使用的是一个mariadb，RS-02不用再次创建表，支持读取RS-01创建的表），测试登录，发现总是直接跳转到RS-01上（在浏览器里输入10.0.0.102，只要一点击登录或者浏览文章，URL就跳转到了10.0.0.101），而且通过抓包发现了下面这种情况，而且通过查看数据库，发现wordpress数据库中很多表的字段里面都写了RS-01的地址。所以无法实现最初的需求；

---

下面是解决问题过程中，测试先安装RS-02，然后安装RS-01时抓的报文，这里作为示例

---

最后解决的方法

上一次部署的时候，我是输入http://10.0.0.101/wordpress/wp-admin/setup-config.php进行安装的。

这回我是输入http://www.example.com/wordpress/wp-admin/setup-config.php进行安装的。
此时www.example.com 对应RS-01的地址10.0.0.101。
部署完成后，发布文档，上传文件。没有问题

将www.example.com对应RS-02的地址10.0.0.102。
查看之前发布的文章，查看之前上传的文件。发布新的文章，都没有问题。

最后配置LVS-NAT。将www.example.com对应LVS的VIP地址，10.207.51.113，调度方式选择成RR（没有选择SH）。
访问www.example.com登录wordpress。发布文章，查看之前的文章，上传的文件。没有问题。
并且session没有问题（这个不清楚为什么，选择的是RR，竟然没有出问题，但是访问速度非常的慢；一旦将模式改为SH或者删除一台主机就访问速度就快了；）

此时收的到的报文

---

通过查看wordpress创建的表，发现在很多表的字段中，wordpress程序会绑定安装的时候使用的URL，之前绑定了成了http://10.0.0.101/wordpress所以会出现跳转的情况

---

10 phpMyAdmin

配置比较简单，参考我之前的文章即可；
之后又部署了phpMyAdmin之后，使用LVS-NAT模式，调度方式使用RR，发现每点击几次个页面，或者刷新几次，就会出现出现session过期的情况，更换调度方式为SH后解决问题；
因为Connection: Keep-Alive的原因，所以不是刷新一次就切换一台服务器，如果Connection: closed，就会变成刷新一次换一个服务器了；

11 Discuz

配置比较简单，此处略
最后安装了Discuz，这个软件就不存在wordpres绑定URL的情况；而且这个软件也是在调度模式为RR的时候没有问题，担仍然是很慢，换成SH模式就快了；