关于Nginx的原理概述及详细配置请参考博文:Centos 7部署Nginx网站服务html
[root@centos01 ~]# yum -y install prce-devel zlib-devel <!--安装Nginx依赖--> [root@centos01 ~]# useradd -M -s /sbin/nologin nginx <!--建立管理Nginx帐户--> [root@centos01 ~]# umount /mnt/ <!--切换Linux光盘-> [root@centos01 ~]# mount /dev/cdrom /mnt/ <!--挂载光盘--> mount: /dev/sr0 写保护,将以只读方式挂载 [root@centos01 ~]# scp /mnt/nginx-1.6.0.tar.gz root@192.168.100.20:/root <!--复制Nginx包到第二台Nginx服务器--> The authenticity of host '192.168.100.20 (192.168.100.20)' can't be established. ECDSA key fingerprint is SHA256:PUueT9fU9QbsyNB5NC5hbSXzaWxxQavBxXmfoknXl4I. ECDSA key fingerprint is MD5:6d:f7:95:0e:51:1a:d8:9e:7b:b6:3f:58:51:51:4b:3b. Are you sure you want to continue connecting (yes/no)? yes <!--输入yes--> Warning: Permanently added '192.168.100.20' (ECDSA) to the list of known hosts. root@192.168.100.20's password: nginx-1.6.0.tar.gz 100% 784KB 68.2MB/s 00:00 [root@centos01 ~]# scp /mnt/haproxy-1.4.24.tar.gz root@192.168.100.30:/root <!--复制haproxy软件包到100.30服务器--> The authenticity of host '192.168.100.30 (192.168.100.30)' can't be established. ECDSA key fingerprint is SHA256:PUueT9fU9QbsyNB5NC5hbSXzaWxxQavBxXmfoknXl4I. ECDSA key fingerprint is MD5:6d:f7:95:0e:51:1a:d8:9e:7b:b6:3f:58:51:51:4b:3b. Are you sure you want to continue connecting (yes/no)? yes <!--输入yes--> Warning: Permanently added '192.168.100.30' (ECDSA) to the list of known hosts. root@192.168.100.30's password: haproxy-1.4.24.tar.gz 100% 817KB 31.1MB/s 00:00 00:00 [root@centos01 ~]# tar zxvf /mnt/nginx-1.6.0.tar.gz -C /usr/src/ <!--解压缩nginx包--> [root@centos01 ~]# cd /usr/src/nginx-1.6.0/ <!--进入nginx目录--> [root@centos01 nginx-1.6.0]# ./configure --prefix=/usr/local/nginx --user=nginx <!--配置nginx--> [root@centos01 nginx-1.6.0]# make && make install <!--编辑及安装nginx--> [root@centos01 ~]# ln -s /usr/local/nginx/sbin/* /usr/local/sbin/ <!--优化执行命令--> [root@centos01 ~]# echo "192.168.100.10:nginx" > /usr/local/nginx/html/index.html <!--建立nginx网站主页,写入测试数据--> [root@centos01 ~]# nginx <!--启动nginx服务--> [root@centos01 ~]# netstat -anptu | grep nginx <!--监听Nginx服务端口号--> tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 3685/ngin: master
[root@centos02 ~]# yum -y install pcre-devel zlib-devel <!--安装依赖软件包--> [root@centos02 ~]# ls anaconda-ks.cfg initial-setup-ks.cfg nginx-1.6.0.tar.gz [root@centos02 ~]# tar zxvf nginx-1.6.0.tar.gz -C /usr/src/ <!--解压缩nginx软件包--> [root@centos02 ~]# useradd -M -s /sbin/nologin nginx <!--建立管理nginx帐户--> [root@centos02 ~]# cd /usr/src/nginx-1.6.0/ [root@centos02 nginx-1.6.0]# ./configure --prefix=/usr/local/nginx --user=nginx <!--配置nginx--> [root@centos02 nginx-1.6.0]# make && make install <!--编译及安装--> [root@centos02 ~]# ln -s /usr/local/nginx/sbin/* /usr/local/sbin/ <!--优化执行路径--> [root@centos02 ~]# echo "192.168.100.20:nginx" > /usr/local/nginx/html/index.html <!--建立nginx网站主页,写入测试数据--> [root@centos02 ~]# nginx <!--启动nginx服务--> [root@centos02 ~]# netstat -anptu | grep nginx tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN 6059/ngin: master
Haproxy概述及工做原理详细配置参考博文:Haproxy搭建Web群集概述
Centos 7基于Haproxy搭建高可用Web群集linux
[root@centos03 ~]# yum -y install pcre-devel bzip2-devel <!--安装依赖程序--> [root@centos03 ~]# ls anaconda-ks.cfg haproxy-1.4.24.tar.gz initial-setup-ks.cfg [root@centos03 ~]# tar zxvf haproxy-1.4.24.tar.gz -C /usr/src/ <!--解压缩haproxy压缩包--> [root@centos03 ~]# cd /usr/src/haproxy-1.4.24/ [root@centos03 haproxy-1.4.24]# make TARGET=linux26 <!--编译haproxy支持64位系统--> [root@centos03 haproxy-1.4.24]# make install <!--安装haproxy-->
[root@centos03 ~]# mkdir /etc/haproxy <!--建立保存haproxy配置文件目录--> [root@centos03 ~]# cp /usr/src/haproxy-1.4.24/examples/haproxy.cfg /etc/haproxy/ <!--生成配置文件--> [root@centos03 ~]# cp /usr/src/haproxy-1.4.24/examples/haproxy.init /etc/init.d/haproxy <!--建立haproxy服务控制脚本--> [root@centos03 ~]# chmod +x /etc/init.d/haproxy <!--添加执行权限--> [root@centos03 ~]# chkconfig --add haproxy <!--添加为系统服务--> [root@centos03 ~]# chkconfig --level 35 haproxy on <!--设置开机自动启动--> [root@centos03 ~]# cp /usr/src/haproxy-1.4.24/haproxy /usr/sbin/ <!--优化程序执行命令--> [root@centos03 ~]# mkdir -p /usr/share/haproxy <!--建立服务运行的临时目录-->
[root@centos03 ~]# vim /etc/haproxy/haproxy.cfg <!--修改haproxy主配置文件--> listen nginx 192.168.100.30:80 <!--Haproxy服务器IP地址--> balance roundrobin server web01 192.168.100.10:80 check inter 2000 fall 3 <!--第一台Nginx的IP--> server web02 192.168.100.20:80 check inter 2000 fall 3 <!--第二台Nginx的IP--> [root@centos03 ~]# /etc/init.d/haproxy start <!--启动haproxy服务--> Starting haproxy (via systemctl): [ 肯定 ]
关于Firewalld防火墙的概述及详细配置请参考博文:Centos 7的Firewalld防火墙基础
Centos 7的firewalld防火墙地址假装和端口转发原理
centos 7之firewalld防火墙配置IP假装和端口转发案例详解nginx
[root@centos04 ~]# cp /etc/sysconfig/network-scripts/ifcfg-ens32 /etc/sysconfig/network-scripts/ifcfg-ens34 <!--复制ens34网卡配置文件--> [root@centos04 ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens34 <!--编辑ens34网卡配置文件--> TYPE=Ethernet PROXY_METHOD=none BROWSER_ONLY=no BOOTPROTO=static DEFROUTE=yes NAME=ens34 DEVICE=ens34 ONBOOT=yes IPADDR=192.168.200.254 <!--外网的IP地址--> NATEMASK=255.255.255.0 DNS1=192.168.200.254 <!--添加DNS--> [root@centos04 ~]# systemctl restart network <!--从新启动网卡服务--> [root@centos04 ~]# vim /etc/sysctl.conf <!--开启路由功能--> net.ipv4.ip_forward = 1 [root@centos04 ~]# sysctl -p <!--刷新配置--> [root@centos01 ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens32 <!--编辑ens32网卡配置文件--> GATEWAY=192.168.100.40 <!--网站服务器和Haproxy服务器添加网关(内网全部服务器都要添加网关)--> [root@centos01 ~]# systemctl restart network <!--从新启动网卡服务--> [root@centos04 ~]# systemctl start firewalld.service <!--启动防火墙--> [root@centos04 ~]# systemctl enable firewalld.service <!--设置开机自动启动--> [root@centos04 ~]# firewall-cmd --add-interface=ens34 --zone=external <!--将ens34接口加入到external区域--> The interface is under control of NetworkManager, setting zone to 'external'. success [root@centos04 ~]# firewall-cmd --add-interface=ens32 --zone=trusted <!--将ens32接口加入到trusted区域--> The interface is under control of NetworkManager, setting zone to 'trusted'. success [root@centos04 ~]# firewall-cmd --get-active-zones <!--查看全部激活的区域--> external interfaces: ens34 trusted interfaces: ens32 [root@centos04 ~]# firewall-cmd --remove-masquerade --zone=external <!--关闭默认的IP地址假装--> success [root@centos04 ~]# firewall-cmd --add-rich-rule='rule family=ipv4 source address=192.168.100.0/24 masquerade' <!--external区域配置IP地址假装--> success [root@centos04 ~]# firewall-cmd --add-rich-rule='rule family=ipv4 destination address=192.168.200.254/32 forward-port port=80 protocol=tcp to-addr=192.168.100.30' <!--配置端口映射;将trusted区域的192.168.100.30的80端口映射到external区域的 192.168.200.254的80端口--> success [root@centos04 ~]# firewall-cmd --zone=external --add-service=http <!--external区域容许http协议--> success [root@centos04 ~]# firewall-cmd --zone=external --add-service=dns <!--external区域容许 dns协议--> success [root@centos04 ~]# firewall-cmd --zone=external --list-all<!--查看external区域的详细信息--> external (active) target: default icmp-block-inversion: no interfaces: ens34 sources: services: ssh http dns ports: protocols: masquerade: no forward-ports: source-ports: icmp-blocks: rich rules: rule family="ipv4" source address="192.168.100.0/24" masquerade rule family="ipv4" destination address="192.168.200.254/32" forward-port port="80" protocol="tcp" to-addr="192.168.100.30"
关于DNS详细配置及概述请参考博文:CentOS7简单搭建DNS服务web
[root@centos04 ~]# yum -y install bind bind-chroot bind-utils <!--安装依赖软件--> [root@centos04 ~]# echo "" > /etc/named.conf [root@centos04 ~]# vim /etc/named.conf <!--编辑DNS主配置文件--> options { listen-on port 53 { any; }; directory "/var/named"; }; zone benet.com IN { type master; file "benet.com.zone"; }; [root@centos04 ~]# named-checkconf -z /etc/named.conf <!--检查DNS主配置文件是否错误--> [root@centos04 ~]# vim /var/named/benet.com.zone <!--编辑benet.com正向解析区域配置文件--> $TTL 86400 @ SOA benet.com. root.benet.com.( 2020021801 1H 15M 1W 1D ) @ NS centos04.benet.com. centos04 A 192.168.200.254 www A 192.168.200.254 [root@centos04 ~]# named-checkzone benet.com /var/named/benet.com.zone <!--检查正向解析区域配置文件是否错误--> zone benet.com/IN: loaded serial 2020021801 OK [root@centos04 ~]# chmod +x /var/named/benet.com.zone <!--正向解析区域配置文件添加执行权限--> [root@centos04 ~]# chown named:named /var/named/benet.com.zone<!--修改属组属组--> [root@centos04 ~]# systemctl start named <!--启动服务--> [root@centos04 ~]# systemctl enable named <!--设置服务开机自动启动-->
一、客户端配置IP地址、添加DNS地址vim
二、客户端使用域名访问centos
三、客户端更换IP地址从新访问服务器
———————— 本文至此结束,感谢阅读 ————————负载均衡