题目：
服务器IP地址规划：client：12.0.0.12/24，网关服务器：ens36:12.0.0.1/24、ens33：192.168.10.1/24，Web1：192.168.10.10/24，Web2：192.168.10.20/24，Nginx：192.168.10.101/24。
1）在Nginx服务器上搭建LNMP服务，并且能够对外提供Discuz论坛服务。
在Web1、Web2服务器上搭建Tomcat 服务。
2）为nginx服务配置虚拟主机，新增两个域名 www.kgc.com 和 www.benet.com，使用http://www.kgc.com/index.php可访问上一题的Discuz论坛页面。
使用http://www.benet.com则访问/var/www/html目录中的index.html文件的内容，内容自定义。
3）对基于www.benet.com域名的虚拟机主机的nginx服务调优：隐藏nginx版本号，缓存静态图片网页时间为1天，设置防盗链功能。
4）网关服务器搭建NFS服务，提供的文件系统使用LVM类型，共享目录名称为/opt/nfs；要求根据日期对Discuz论坛服务的访问日志进行日志分割，要求每天生成一份日志文件，保存到NFS服务共享的目录内
5）要求配置location匹配请求地址http://www.kgc.com/test/XXXX，使用户访问该路径下的文件时返回/var/share/nginx/html/目录下的文件内容。
要求使用rewrite将使用域名www.benet.com 请求以 .php 结尾的访问都跳转到域名www.kgc.com上，而且后面的参数保持不变，比如访问http://www.benet.com/bbs/index.php跳转到http://www.kgc.com/bbs/index.php。
6）在Nginx服务器上对基于www.benet.com域名的虚拟机主机设置动静分离由nginx提供静态页面服务，将对 .jsp文件的动态页面请求转发到Tomcat 服务器处理，并实现负载均衡
7）在网关服务器上设置SNAT/DNAT，使client使用网关服务器的ens36接口的IP地址访问也可实现上一题的效果。
实验：
7-1为Nginx；7-2和7-3为Web服务器；7-4为网关服务器；7-5为客户机Client
配置网关7-4
1.在Nginx服务器上搭建LNMP服务，并且能够对外提供Discuz论坛服务。在Web1、Web2服务器上搭建Tomcat 服务。
7-1为Nginx服务器
1.安装Nginx
cd /opt
tar zxvf nginx-1.22.0.tar.gz -C /opt/
cd nginx-1.22.0/
./configure \
--prefix=/usr/local/nginx \ #指定nginx的安装路径
--user=nginx \ #指定用户名
--group=nginx \ #指定组名
--with-http_stub_status_module #启用 http_stub_status_module 模块以支持状态统计
cd nginx-1.22.0/
./configure \
--prefix=/usr/local/nginx \
--user=nginx \
--group=nginx \
--with-http_stub_status_module
make && make install
ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/
#让系统识别nginx的操作命令可以自动补全 nginx $PATH
添加Nginx系统服务 systemctl start nginx
tee /lib/systemd/system/nginx.service <<eof
[Unit]
Description=nginx
After=network.target
[Service]
Type=forking
PIDFile=/usr/local/nginx/logs/nginx.pid
ExecStart=/usr/local/nginx/sbin/nginx
ExecReload=/bin/kill -1 $MAINPID
ExecStop=/bin/kill -3 $MAINPID
PrivateTmp=true
[Install]
WantedBy=multi-user.target
eof
systemctl daemon-reload
chmod 777 /lib/systemd/system/nginx.service
systemctl enable --now nginx.service
2.安装数据库
准备好本次的安装包 ：mysql-boost-5.7.20.tar.gz
1、安装Mysql环境依赖包
yum -y install \
ncurses \
ncurses-devel \
bison \
cmake
yum -y install gcc gcc-c++ cmake bison bison-devel zlib-devel libcurl-devel libarchive-devel boost-devel ncurses-devel gnutls-devel libxml2-devel openssl-devel libevent-devel libaio-devel
2、创建运行用户
useradd -M -s /sbin/nologin mysql
3、编译安装
cd /opt
tar zxvf mysql-boost-5.7.20.tar.gz
cd /opt/mysql-5.7.20/
cmake \
-DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
-DMYSQL_UNIX_ADDR=/usr/local/mysql/mysql.sock \
-DSYSCONFDIR=/etc \
-DSYSTEMD_PID_DIR=/usr/local/mysql \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DWITH_EXTRA_CHARSETS=all \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_ARCHIVE_STORAGE_ENGINE=1 \
-DWITH_BLACKHOLE_STORAGE_ENGINE=1 \
-DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \
-DMYSQL_DATADIR=/usr/local/mysql/data \
-DWITH_BOOST=boost \
-DWITH_SYSTEMD=1
make && make install
4、修改mysql 配置文件
vim /etc/my.cnf
[client]
port = 3306
socket=/usr/local/mysql/mysql.sock
[mysqld]
user = mysql
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
port = 3306
character-set-server=utf8
pid-file = /usr/local/mysql/mysqld.pid
socket=/usr/local/mysql/mysql.sock
bind-address = 0.0.0.0
skip-name-resolve
max_connections=2048
default-storage-engine=INNODB
max_allowed_packet=16M
server-id = 1
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_AUTO_VALUE_ON_ZERO,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,PIPES_AS_CONCAT,ANSI_QUOTES
5、更改mysql安装目录和配置文件的属主属组
chown -R mysql:mysql /usr/local/mysql/
chown mysql:mysql /etc/my.cnf
6、设置路径环境变量
echo 'export PATH=/usr/local/mysql/bin:/usr/local/mysql/lib:$PATH' >> /etc/profile
source /etc/profile
7、初始化数据库
cd /usr/local/mysql/bin/
./mysqld \
--initialize-insecure \
--user=mysql \
--basedir=/usr/local/mysql \
--datadir=/usr/local/mysql/data
8、添加mysqld系统服务
cp /usr/local/mysql/usr/lib/systemd/system/mysqld.service /usr/lib/systemd/system/
systemctl daemon-reload
systemctl start mysqld.service
systemctl enable mysqld
9、修改mysql 的登录密码
mysqladmin -u root -p password "abc123"
给root账号设置密码为abc123，提示输入的是原始密码（为空）要求输入的是原密码直接回车即可
10、授权远程登录
mysql -u root -p
3.安装php软件
php的编译安装
本次使用的php软件包为：php-7.1.10.tar.bz2
1、安装环境依赖包
yum -y install gd \
libjpeg libjpeg-devel \
libpng libpng-devel \
freetype freetype-devel \
libxml2 libxml2-devel \
zlib zlib-devel \
curl curl-devel \
openssl openssl-devel
2、编译安装
cd /opt
tar jxvf php-7.1.10.tar.bz2
cd php-7.1.10
./configure \
--prefix=/usr/local/php \
--with-mysql-sock=/usr/local/mysql/mysql.sock \
--with-mysqli \
--with-zlib \
--with-curl \
--with-gd \
--with-jpeg-dir \
--with-png-dir \
--with-freetype-dir \
--with-openssl \
--enable-fpm \
--enable-mbstring \
--enable-xml \
--enable-session \
--enable-ftp \
--enable-pdo \
--enable-tokenizer \
--enable-zip
make && make install
3、路径优化
ln -s /usr/local/php/bin/* /usr/local/bin/
ln -s /usr/local/php/sbin/* /usr/local/sbin/
4、调整PHP配置文件
php有三个配置文件：
php.ini 主配置文件
php-fpm.conf 进程服务配置文件
www.conf 扩展配置文件
#调整主配置文件：
cp /opt/php-7.1.10/php.ini-development /usr/local/php/lib/php.ini
vim /usr/local/php/lib/php.ini
--1170行--修改
mysqli.default_socket = /usr/local/mysql/mysql.sock
--939行--取消注释，修改
date.timezone = Asia/Shanghai
php -m #验证安装的模块
#调整进程服务配置文件：
cd /usr/local/php/etc/
cp php-fpm.conf.default php-fpm.conf
vim php-fpm.conf
--17行--去掉";"注释
pid = run/php-fpm.pid
#调整扩展配置文件：
cd /usr/local/php/etc/php-fpm.d/
cp www.conf.default www.conf
5、启动php-fpm
/usr/local/php/sbin/php-fpm -c /usr/local/php/lib/php.ini
netstat -anpt | grep 9000
#PHP-FPM(FastCGI Process Manager：FastCGI 进程管理器)是一个 PHPFastCGI 管理器， 由于Nginx服务器不能处理动态页面，需要由 Nginx 把动态请求交给 php-fpm 进程进行解析。
cd /opt/php-7.1.10/sapi/fpm
cp php-fpm.service /usr/lib/systemd/system/php-fpm.service
systemctl restart php-fpm.service
4.配置nginx支持php
vim /usr/local/nginx/conf/nginx.conf
--65行--取消注释，修改
location ~ \.php$ {
root html; $document_root
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /usr/local/nginx/html$fastcgi_script_name; #将 /scripts 修改为nginx的工作目录
#fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; #$document_root 代表当前请求在root指令中指定的值
include fastcgi_params;
}
systemctl restart nginx.service
验证PHP 测试页
vim /usr/local/nginx/html/index.php
<?php
phpinfo();
?>
验证lnmp的是否搭建成功:
192.168.44.40/index.php
验证数据库工作是否正常
mysql -u root -pabc123
CREATE DATABASE bbs;
GRANT all ON bbs.* TO 'bbsuser'@'%' IDENTIFIED BY 'admin123';
GRANT all ON bbs.* TO 'bbsuser'@'localhost' IDENTIFIED BY 'admin123';
flush privileges;
vim /usr/local/nginx/html/index.php #替换原来的测试页内容
<?php
$link=mysqli_connect('192.168.233.21','bbsuser','admin123');
if($link) echo "<h1>Success!!</h1>";
else echo "Fail!!";
?>
浏览器访问
http://192.168.91.100/index.php
5.安装论坛
【部署 Discuz！社区论坛 Web 应用】
cd /opt
unzip Discuz_X3.4_SC_UTF8.zip
cd /opt/dir_SC_UTF8/
cp -r upload/ /usr/local/nginx/html/bbs/
调整论坛目录的权限：
cd /usr/local/nginx/html/bbs/
chown -R nginx ./config/
chown -R nginx ./data/
chown -R nginx ./uc_client/
chown -R nginx ./uc_server/
都要处理
chmod -R 777 ./config/
chmod -R 777 ./data/
chmod -R 777 ./uc_client/
chmod -R 777 ./uc_server/
论坛页面访问
http://192.168.91.100/bbs/install/index.php
----------------------------------------------------------------------------------------------------------
数据库服务器：localhost ###本地架设就用localhost，如何不是在在本机上就要填写IP地址和端口号
数据库名字：bbs
数据库用户名：bbsuser
数据库密码：admin123
管理员账号:admin
管理员密码:admin123
安装完后访问论坛页面：
http://192.168.44.40/bbs/index.php
http://192.168.44.40/bbs/admin.php6.浏览器访问页面
7.Web服务器7-2和7-3安装tomcat
1.安装jdk
[root@localhost data]# yum install jdk-8u291-linux-x64.rpm
[root@localhost data]# vim /etc/profile.d/jdk.sh
[root@localhost data]#cat /etc/profile.d/jdk.sh
export JAVA_HOME=/usr/local/jdk
export PATH=$JAVA_HOME/bin:$PATH
export JRE_HOME=$JAVA_HOME/jre
export CLASSPATH=$JAVA_HOME/lib/:$JRE_HOME/lib/
[root@localhost data]# . /etc/profile.d/jdk.sh
[root@localhost data]# java -version
2.安装tomcat
[root@localhost data]# ls
apache-tomcat-9.0.16.tar.gz jdk-8u291-linux-x64.rpm
[root@localhost data]# tar xf apache-tomcat-9.0.16.tar.gz
[root@localhost data]# ls
apache-tomcat-9.0.16 jdk-8u291-linux-x64.rpm
apache-tomcat-9.0.16.tar.gz
[root@localhost data]#
[root@localhost data]# cp -r apache-tomcat-9.0.16 /usr/local/
[root@localhost data]# cd /usr/local
[root@localhost local]# ln -s apache-tomcat-9.0.16/ tomcat
[root@localhost local]# cd tomcat/bin
[root@localhost bin]# useradd -s /sbin/nologin tomcat
[root@localhost bin]# cd /usr/local
[root@localhost local]#
[root@localhost local]# chown tomcat:tomcat tomcat/ -R
[root@localhost local]#
[root@localhost local]# vim /usr/lib/systemd/system/tomcat.service
[Unit]
Description=Tomcat
After=syslog.target network.target
[Service]
Type=forking
ExecStart=/usr/local/tomcat/bin/startup.sh
ExecStop=/usr/local/tomcat/bin/shutdown.sh
RestartSec=3
PrivateTmp=true
User=tomcat
Group=tomcat
[Install]
WantedBy=multi-user.target
[root@localhost local]# systemctl daemon-reload
[root@localhost local]# systemctl start tomcat
[root@localhost local]# systemctl status tomcat
2.为nginx服务配置虚拟主机，新增两个域名 www.kgc.com 和 www.benet.com，使用http://www.kgc.com/index.php可访问上一题的Discuz论坛页面。
使用http://www.benet.com则访问/var/www/html目录中的index.html文件的内容，内容自定义。
1.配置7-1
[root@localhost ~]# vim /usr/local/nginx/conf/nginx.conf
35 server {
36 listen 80;
37 server_name www.kgc.com;
38 root /usr/local/nginx/html;
66 location ~ \.php$ {
67 root html;
68 fastcgi_pass 127.0.0.1:9000;
69 fastcgi_index index.php;
70 fastcgi_param SCRIPT_FILENAME /usr/local/nginx/html$fastc gi_script_name;
71 include fastcgi_params;
72 }
81 server {
82 listen 80;
83 server_name www.benet.com;
84 root /usr/local/nginx/html;
85 }
2.客户端7-5配置
C:\Windows\System32\drivers\etc
3.客户机7-5测试结果
3.对基于www.benet.com域名的虚拟机主机的nginx服务调优：隐藏nginx版本号，缓存静态图片网页时间为1天，设置防盗链功能。
1.配置7-1
81 server {
82 listen 80;
83 server_name www.benet.com;
84 expires 1d;
85 server_tokens off;
86 root /usr/local/nginx/html;
87
88 location ~* \.(jpg|png|gif)$ {
89 valid_referers none blocked *.benet.com benet.c om;
90 if ( $invalid_referer ) {
91 return 403;
92 }
93 }
94 }
2.去7-5客户机测试
4.网关服务器搭建NFS服务，提供的文件系统使用LVM类型，共享目录名称为/opt/nfs；要求根据日期对Discuz论坛服务的访问日志进行日志分割，要求每天生成一份日志文件，保存到NFS服务共享的目录内
1.配置网关服务器7-4
给7-4加硬盘
[root@localhost ~]# echo "- - -" > /sys/class/scsi_host/host0
-bash: /sys/class/scsi_host/host0: 是一个目录
[root@localhost ~]# echo "- - -" > /sys/class/scsi_host/host0/scan
[root@localhost ~]# echo "- - -" > /sys/class/scsi_host/host1/scan
[root@localhost ~]# echo "- - -" > /sys/class/scsi_host/host2/scan
[root@localhost ~]#
[root@localhost ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 60G 0 disk
├─sda1 8:1 0 1G 0 part /boot
└─sda2 8:2 0 54G 0 part
├─centos-root 253:0 0 50G 0 lvm /
└─centos-swap 253:1 0 4G 0 lvm [SWAP]
sdb 8:16 0 20G 0 disk
sdc 8:32 0 20G 0 disk
sr0 11:0 1 1024M 0 rom
[root@localhost ~]#
[root@localhost ~]# pvcreate /dev/sdb /dev/sdc
Physical volume "/dev/sdb" successfully created.
Physical volume "/dev/sdc" successfully created.
[root@localhost ~]#
[root@localhost ~]# vgcreate vg /dev/sdb /dev/sdc
Volume group "vg" successfully created
[root@localhost ~]#
[root@localhost ~]# lvcreate -n lvm -L 30G /dev/vg
Logical volume "lvm" created.
[root@localhost ~]#
[root@localhost ~]# mkfs.xfs /dev/vg/lvm
meta-data=/dev/vg/lvm isize=512 agcount=4, agsize=1966080 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0, sparse=0
data = bsize=4096 blocks=7864320, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal log bsize=4096 blocks=3840, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
[root@localhost ~]# mount /dev/vg/lvm /mnt
[root@localhost ~]#
[root@localhost ~]# mkdir /mnt/nfs
[root@localhost ~]# vim /etc/exports
[root@localhost ~]# cat /etc/exports
/mnt/nfs *
[root@localhost ~]# systemctl start nfs
[root@localhost ~]# exportfs -v
/mnt/nfs <world>(ro,sync,wdelay,hide,no_subtree_check,sec=sys,secure,root_squash,no_all_squash)
[root@localhost ~]#
2.配置Nginx服务器7-1-------共享目录
[root@localhost html]# showmount -e 192.168.91.104
Export list for 192.168.91.104:
/mnt/nfs *
[root@localhost html]# mount 192.168.91.104:/mnt/nfs /mnt/
[root@localhost html]#
[root@localhost html]# df
文件系统 1K-块 已用 可用 已用% 挂载点
/dev/mapper/centos-root 52403200 13761760 38641440 27% /
devtmpfs 917588 0 917588 0% /dev
tmpfs 933512 0 933512 0% /dev/shm
tmpfs 933512 9192 924320 1% /run
tmpfs 933512 0 933512 0% /sys/fs/cgroup
/dev/sda1 1038336 182400 855936 18% /boot
tmpfs 186704 36 186668 1% /run/user/0
/dev/sr0 4414592 4414592 0 100% /run/media/root/CentOS 7 x86_64
192.168.91.104:/mnt/nfs 31441920 32768 31409152 1% /mnt
[root@localhost html]#
3.日志分割7-1
[root@localhost ~]# vim xzq.sh
[root@localhost ~]# cat xzq.sh
#!/bin/bash
day=`date "+%Y-%m-%d"`
log="/usr/local/nginx/logs"
pid=`cat /usr/local/nginx/nginx/logs/nginx.pid`
mv /${log}/access.log /opt/${day}
kill -USR1 ${pid}
sed -i '/.*bbs.*/!p' /opt/${day}
[root@localhost ~]# crontab -e
no crontab for root - using an empty one
crontab: installing new crontab
[root@localhost ~]# crontab -l
59 23 * * * bash ~/xzq.sh
[root@localhost ~]#
5.要求配置location匹配请求地址http://www.kgc.com/test/XXXX，使用户访问该路径下的文件时返回/var/share/nginx/html/目录下的文件内容。要求使用rewrite将使用域名www.benet.com 请求以 .php 结尾的访问都跳转到域名www.kgc.com上，而且后面的参数保持不变，比如访问http://www.benet.com/bbs/index.php跳转到http://www.kgc.com/bbs/index.php。
1.配置7-1Nginx服务器
74 location /test {
75 alias /var/share/nginx/html;
76 } 
92 location ~* \.php$ {
93 rewrite (.*) http://www.kgc.com/$1;
94 } 
[root@localhost ~]# vim /usr/local/nginx/conf/nginx.conf
[root@localhost ~]# nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@localhost ~]#
[root@localhost ~]# mkdir /var/share/nginx/html -p
[root@localhost ~]# nginx -s reload
[root@localhost ~]# cd /var/share/nginx/html
[root@localhost html]# ls
[root@localhost html]# echo share > index.html
[root@localhost html]# nginx -s reload
2.浏览器访问测试结果
6.在Nginx服务器上对基于www.benet.com域名的虚拟机主机设置动静分离由nginx提供静态页面服务，将对 .jsp文件的动态页面请求转发到Tomcat 服务器处理，并实现负载均衡
1.配置Nginx服务器7-1
[root@localhost html]# vim /usr/local/nginx/conf/nginx.conf
[root@localhost html]# nginx -t
nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful
[root@localhost html]# vim /usr/local/nginx/conf/nginx.conf
[root@localhost html]# nginx -s reload
17 http {
18 include mime.types;
19 default_type application/octet-stream;
20 upstream web {
21 server 192.168.91.102:8080;
22 server 192.168.91.103:8080;
23 } 
100 location ~* \.(jpg|png|gif|html)$ {
101 root html;
102 index index.html index.htm;
103 }
104
105 location ~* \.jsp$ {
106 proxy_pass http://web;
107 }
[root@localhost nginx]# cd /var/share/nginx/html
[root@localhost html]# ls
index.html
[root@localhost html]# cat index.html
share
[root@localhost html]# rm -rf index.html
[root@localhost html]# ls
[root@localhost html]# echo jingtai > index.html
[root@localhost html]# cat index.html
jingtai
[root@localhost html]#
2.配置Tomcat服务器7-2
[root@localhost ~]# cd /usr/local/tomcat/webapps
[root@localhost webapps]# echo 7-2 > index.jsp
[root@localhost webapps]# cat index.jsp
7-2
[root@localhost webapps]# systemctl restart tomcat
[root@localhost webapps]#
3.配置Tomcat服务器7-3
[root@localhost ~]# cd /usr/local/tomcat/webapps
[root@localhost webapps]# echo 7-3 > index.html
[root@localhost webapps]# cat index.html
7-3
[root@localhost webapps]# systemctl restart tomcat
[root@localhost webapps]#
4.客户机7-5访问测试
7.在网关服务器上设置SNAT/DNAT，使client使用网关服务器的ens36接口的IP地址访问也可实现上一题的效果。
1.配置Client7-5
[root@centos5 network-scripts]# systemctl restart network
2.配置Nginx服务器7-1
[root@localhost network-scripts]# vim ifcfg-ens33
[root@localhost network-scripts]# cat ifcfg-ens33
TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=c1d6be33-1c8f-4836-a6ae-4e14aeca1923
DEVICE=ens33
ONBOOT=yes
IPADDR=192.168.91.100
NETMASK=255.255.255.0
GATEWAY=192.168.91.104
DNS1=8.8.8.8
[root@localhost network-scripts]# systemctl restart network
3.配置网关服务器7-4
[root@localhost ~]# sysctl -a | grep ip_forward
sysctl: reading key "net.ipv6.conf.all.stable_secret"
sysctl: reading key "net.ipv6.conf.default.stable_secret"
net.ipv4.ip_forward = 0
net.ipv4.ip_forward_use_pmtu = 0
sysctl: reading key "net.ipv6.conf.ens33.stable_secret"
sysctl: reading key "net.ipv6.conf.ens36.stable_secret"
sysctl: reading key "net.ipv6.conf.lo.stable_secret"
sysctl: reading key "net.ipv6.conf.virbr0.stable_secret"
sysctl: reading key "net.ipv6.conf.virbr0-nic.stable_secret"
[root@localhost ~]# vim /etc/sysctl.conf
[root@localhost ~]# cat /etc/sysctl.conf
# sysctl settings are defined through files in
# /usr/lib/sysctl.d/, /run/sysctl.d/, and /etc/sysctl.d/.
#
# Vendors settings live in /usr/lib/sysctl.d/.
# To override a whole file, create a new file with the same in
# /etc/sysctl.d/ and put new settings there. To override
# only specific settings, add a file with a lexically later
# name in /etc/sysctl.d/ and put new settings there.
#
# For more information, see sysctl.conf(5) and sysctl.d(5).
net.ipv4.ip_forward = 1
[root@localhost ~]# sysctl -p
net.ipv4.ip_forward = 1
[root@localhost ~]#
添加域名解析
[root@localhost ~]# vim /etc/hosts
[root@localhost ~]# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.91.100 www.kgc.com www.benet.com
[root@localhost ~]#
添加iptables防火墙
[root@localhost ~]# iptables -F
[root@localhost ~]# iptables -t nat -A POSTROUTING -s 192.168.91.104/24 -o ens36 -p tcp --dport 80 -j SNAT --to 12.0.0.1
[root@localhost ~]# iptables -t nat -A POSTROUTING -d 12.0.0.1/24 -i ens36 -p tcp --dport 80 -j DNAT --to 192.168.91.104
iptables v1.4.21: Can't use -i with POSTROUTING
Try `iptables -h' or 'iptables --help' for more information.
[root@localhost ~]# iptables -t nat -A PREROUTING -d 12.0.0.1/24 -i ens36 -p tcp --dport 80 -j DNAT --to 192.168.91.104
[root@localhost ~]# iptables -t nat -vnL
Chain PREROUTING (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
0 0 DNAT tcp -- ens36 * 0.0.0.0/0 12.0.0.0/24 tcp dpt:80 to:192.168.91.104
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 1 packets, 64 bytes)
pkts bytes target prot opt in out source destination
Chain POSTROUTING (policy ACCEPT 1 packets, 64 bytes)
pkts bytes target prot opt in out source destination
0 0 SNAT tcp -- * ens36 192.168.91.0/24 0.0.0.0/0 tcp dpt:80 to:12.0.0.1
[root@localhost ~]#
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