在CentOS6上搭建LNMP环境（上）
搭建环境：操作系统：CentOS 6.7
nginx软件：nginx-1.8.1.tar.gz
mysql软件：mysql-5.5.51-linux2.6-x86_64.tar.gz
PHP软件：php-5.6.11.tar.gz
一、LNMP安装前环境准备
1、设置linux防火墙
1）在iptables上开放80,3306,443端口
# vim /etc/sysconfig/iptables
# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT
:FORWARD ACCEPT
:OUTPUT ACCEPT
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 443 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT
# service iptables restart-----重启iptables服务
2）关闭selinux防火墙
# vim /etc/sysconfig/selinux
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
# targeted - Targeted processes are protected,
# mls - Multi Level Security protection.
SELINUXTYPE=targeted
#setenforc 0
3)安装依赖包
#yum -y install gcc gcc-c++ autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel glibc glibc-devel glib2 glib2-devel bzip2 bzip2-devel ncurses ncurses-devel curl curl-devel e2fsprogs e2fsprogs-devel krb5 krb5-devel libidn libidn-devel openssl openssl-devel openldap openldap-devel openldap-clients openldap-servers makelibtool* git tree bison pcre-devel perl gd gd-devel
4）编译安装其他软件
A：安装libiconv软件（该软件支持编码转换为函数）
# tar xf libiconv-1.14.tar.gz
# ./configure --prefix=/usr/local
# make && make install
# echo $?
0
（显示0，表示软件编译安装成功了）
B：安装libmcrypt（加密算法扩展库，支持DES, 3DES, RIJNDAEL, Twofish, IDEA, GOST, CAST-256, ARCFOUR, SERPENT, SAFER+等算法)
# tar xf libmcrypt-2.5.7.tar.gz
# cd libmcrypt-2.5.7
# ./configure
# cd libltdl/
# ./configure --enable-ltdl-install
# make && make install
C: 安装mhash（mhash的可以用于创建校验数值，消息摘要，消息认证码，以及无需原文的关键信息保存）
# tar xf mhash-0.9.9.9.tar.gz
# cd mhash-0.9.9.9
# ./configure && make && make install
D：安装mcript（mcrypt 是 php 里面重要的加密支持扩展库，Mcrypt扩展库可以实现加密解密功能，就是既能将明文加密，也可以密文还原。）
# tar xf mcrypt-2.6.8.tar.gz
# cd mcrypt-2.6.8
# export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
# ./configure && make && make install
E：增加库文件
# ln -s /usr/local/lib/libmcrypt.la /usr/lib/libmcrypt.la
# ln -s /usr/local/lib/libmcrypt.so /usr/lib/libmcrypt.so
# ln -s /usr/local/lib/libmcrypt.so.4 /usr/lib/libmcrypt.so.4
# ln -s /usr/local/lib/libmcrypt.so.4.4.8 /usr/lib/libmcrypt.so.4.4.8
# ln -s /usr/local/lib/libmhash.a /usr/lib/libmhash.a
# ln -s /usr/local/lib/libmhash.la /usr/lib/libmhash.la
# ln -s /usr/local/lib/libmhash.so /usr/lib/libmhash.so
# ln -s /usr/local/lib/libmhash.so.2 /usr/lib/libmhash.so.2
# ln -s /usr/local/lib/libmhash.so.2.0.1 /usr/lib/libmhash.so.2.0.1
# ln -s /usr/local/bin/libmcrypt-config /usr/bin/libmcrypt-config
F：安装cmake （MySQL从5.5版本开始，通过./configure进行编译配置方式已经被取消，取而代之的是cmake工具）
# yum -y install cmake
二、安装mysql数据软件
1）创建mysql用户
#groupadd -r mysql
# useradd -r -g mysql mysql -s /sbin/nologin
2）创建mysql的数据目录
# mkdir -p /data/mysqldb
3）安装mysql
# cd /software/
# tar xf mysql-5.5.51-linux2.6-x86_64.tar.gz -C /usr/local/
# cd /usr/local/
# ll
total 48
drwxr-xr-x.2 root root 4096 Aug 18 11:46 bin
drwxr-xr-x.2 root root 4096 Sep 232011 etc
drwxr-xr-x.2 root root 4096 Sep 232011 games
drwxr-xr-x.3 root root 4096 Aug 18 11:45 include
drwxr-xr-x.3 root root 4096 Aug 18 11:45 lib
drwxr-xr-x.2 root root 4096 Sep 232011 lib64
drwxr-xr-x.2 root root 4096 Sep 232011 libexec
drwxr-xr-x.3 root root 4096 Aug 18 11:41 man
drwxr-xr-x. 13 root root 4096 Aug 18 11:55 mysql-5.5.51-linux2.6-x86_64
drwxr-xr-x.2 root root 4096 Sep 232011 sbin
drwxr-xr-x.8 root root 4096 Aug 18 11:41 share
drwxr-xr-x.2 root root 4096 Sep 232011 src
# ln -sv mysql-5.5.51-linux2.6-x86_64/ mysql
`mysql' -> `mysql-5.5.51-linux2.6-x86_64/'
修改mysql目录权限
# chown -R mysql:mysql .
# cd /data/mysqldb/
# chown -R mysql:mysql .
初始化mysql数据库
# cd /usr/local/mysql
# ./scripts/mysql_install_db --user=mysql --datadir=/data/mysqldb
编辑mysql配置文件/etc/my.cnf
datadir=/data/mysqldb
socket=/tmp/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
复制MySQL启动文件及其命令加入PATH
# cp support-files/mysql.server/etc/init.d/mysqld
# chmod +x /etc/init.d/mysqld
# chkconfig mysqld on
# vim /etc/profile.d/mysqld.sh
PATH=/usr/local/mysql/bin:/usr/local/mysql/lib:$PATH
# source /etc/profile.d/mysql.sh
启动mysql服务器
# service mysqld start
Starting MySQL..
修改root用户的密码及授权普通用户test可以远程连接到mysql数据库
mysql> grant all on *.* to 'root'@'localhost' identified by 'test123';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> grant all on *.* to 'test'@'%' identified by 'test1234';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec
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