负载高可用实验
关闭防火墙
systemctl stop firewalld
systemctl disable firewalld
setenforce 0
配置环境
[root@localhost ~]# vim /etc/hosts
192.168.116.121 tomcat 安装tomcat
192.168.116.122 php 安装php-fpm、nginx
192.168.116.131 nginx1 安装nginx
192.168.116.132 nginx2 安装nginx
192.168.116.111 master 安装lvs、keepalived
192.168.116.156 backup 安装lvs、keepalived``
1、安装tomcat步骤--192.168.116.121
1、安装 JDK（java）
1.上传jdk到服务器中，安装jdk
[root@localhost ~]# mkdir /application #创建工作目录
[root@localhost ~]# tar xzf jdk-8u60-linux-x64.tar.gz -C /application/
[root@localhost ~]# mv /application/jdk1.8.0_60 /application/jdk
# 设置环境变量
[root@localhost ~]# vim /etc/profile
JAVA_HOME=/usr/local/java #指定java安装目录
PATH=$JAVA_HOME/bin:$PATH #用于指定java系统查找命令的路径
export JAVA_HOME PATH #类的路径，在编译运行java程序时，如果有调用到其他类的时候，在classpath中寻找需要的类。
[root@localhost ~]# source /etc/profile #让环境变量生效
#测试jdk是否安装成功
[root@localhost ~]# java -version
java version "1.8.0_60"
Java(TM) SE Runtime Environment (build 1.8.0_60-b27)
Java HotSpot(TM) 64-Bit Server VM (build 25.60-b23, mixed mode)
2、安装Tomcat
将tomcat安装包上传到服务器中：
[root@localhost ~]# tar xzf apache-tomcat-8.0.27.tar.gz -C /application/
[root@localhost ~]# mv /application/apache-tomcat-8.0.27 /application/tomcat
# 设置环境变量
[root@localhost ~]# echo 'export TOMCAT_HOME=/application/tomcat'>>/etc/profile
[root@localhost ~]# source /etc/profile
启动tomcat
[root@localhost ~]# /application/tomcat/bin/startup.sh
测试
网址输入192.168.116.121：8080，会出来tomcat测试页面192.168.116.121的tomcat的测试页面
2、安装php-fpm/nginx--步骤--192.168.116.122
#下载nginx
# yum安装nginx
[root@localhost ~]# vim /etc/yum.repo.d/nginx.repo
[nginx-stable]
name=nginx stable repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=0
enabled=1
[root@localhost ~]# yum install nginx -y
[root@localhost ~]# systemctl start nginx
[root@localhost ~]# systemctl enable nginx
# 下载PHP
[root@localhost ~]# rpm -Uvh https://mirror.webtatic.com/yum/el7/epel-release.rpm
[root@localhost ~]# rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
[root@localhost ~]# yum install php71w-xsl php71w
[root@localhost ~]# yum -y install php71w-xsl php71w php71w-ldap php71w-cli php71w-common php71w-devel php71w-gd php71w-pdo php71w-mysql php71w-mbstring php71w-bcmath php71w-mcrypt //php依赖包
[root@localhost ~]# yum install -y php71w-fpm //php主包
[root@localhost ~]# systemctl start php-fpm
[root@localhost ~]# systemctl enable php-fpm
# 验证nginx/php-fpm有没有起来
[root@localhost ~]# systemctl status nginx
[root@localhost ~]# systemctl status php-fpm
# 编辑配置文件
vim /etc/nginx/conf.d/php.conf
server {
listen 80;
server_name localhost;
location ~ \.php$ {
root /usr/share/nginx/html; #指定网站目录
fastcgi_pass 127.0.0.1:9000; #开启fastcgi连接php地址
fastcgi_index index.php; #指定默认文件
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; #站点根目录，取决于root配置项
include fastcgi_params; #包含fastcgi使用的常量
}
}
[root@localhost ~]# vim /usr/share/nginx/html/test.php
<?php
phpinfo();
?>
# 重启nginx
[root@localhost ~]# systemctl restart nginx
测试
输入网址192.168.116.122/test.php //会出来php的测试页面
3、安装nginx步骤--192.168.116.131
# yum安装nginx--代理tomcat
[root@localhost ~]# vim /etc/yum.repo.d/nginx.repo
[nginx-stable]
name=nginx stable repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=0
enabled=1
[root@localhost ~]# yum install nginx -y
[root@localhost ~]# systemctl start nginx
# 配置负载均衡
[root@localhost ~]# vim /etc/nginx/conf.d/upstream.conf
upstream tomcat01 {
server 192.168.116.121:8080;
server 192.168.116.122;
}
# 配置代理
[root@localhost ~]# vim /etc/nginx/conf.d/tomcat_01.conf
server {
listen 80;
server_name localhost;
#access_log logs/host.access.log main;
location / {
proxy_pass http://tomcat01;
proxy_set_header Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
# 重启nginx
systemctl restart nginx
测试
输入网址192.168.116.131 //会出来192.168.116.(121/122)的页面
4、安装nginx步骤--192.168.116.132
# yum安装nginx--代理php
[root@localhost ~]# vim /etc/yum.repo.d/nginx.repo
[nginx-stable]
name=nginx stable repo
baseurl=http://nginx.org/packages/centos/$releasever/$basearch/
gpgcheck=0
enabled=1
[root@localhost ~]# yum install nginx -y
[root@localhost ~]# systemctl start nginx
# 负载均衡192.168.116.122
vim /etc/nginx/conf.d/upstream.conf
upstream php01 {
server 192.168.116.121:8080;
server 192.168.116.122;
}
# 代理配置
vim /etc/nginx/conf.d/php_01.conf
server {
listen 80;
server_name localhost;
location / {
proxy_pass http://php01;
proxy_set_header Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
# 重启nginx
systemctl restart nginx
测试
输入网址192.168.116.132 //会出来192.168.116.(121/122)的页面
5、配置（lvs--keepalived)--192.168.116.111(MASTER)
1. 主/备调度器安装软件
[root@lvs-keepalived-master ~]# yum -y install ipvsadm keepalived
2、配置keepalived,conf配置文件
lvs-master
[root@ha-proxy-master ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
router_id lvs-keepalived-master #辅助改为lvs-backup
}
vrrp_instance VI_1 {
state MASTER （修改的）
interface ens33 （修改的） #VIP绑定接口
virtual_router_id 80 #VRID 同一组集群，主备一致
priority 100 #本节点优先级，辅助改为50
advert_int 1 #检查间隔，默认为1s
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.246.11/32 （修改的）
}
}
virtual_server 192.168.246.11 80 { （修改的） #LVS配置
delay_loop 6 #健康检查rs时间间隔
lb_algo rr （修改的） #LVS调度算法
lb_kind DR （修改的） #LVS集群模式（路由模式）
protocol TCP #健康检查使用的协议
real_server 192.168.116.131 80 { （修改的）
weight 1
inhibit_on_failure #当该节点失败时，把权重设置为0，而不是从IPVS中删除
TCP_CHECK { #健康检查
connect_port 80 #检查的端口
connect_timeout 3 #连接超时的时间
}
}
real_server 192.168.116.132 80 { （修改的）
weight 1
inhibit_on_failure
TCP_CHECK {
connect_timeout 3
connect_port 80
}
}
}
3. 启动KeepAlived（主备均启动）
[root@lvs-keepalived-master ~]# systemctl start keepalived
[root@lvs-keepalived-master ~]# systemctl enable keepalived
# 查看ip
[root@lvs-keepalived-master ~]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.246.110:80 rr persistent 20
-> 192.168.246.162:80 Route 1 0 0
-> 192.168.246.163:80 Route 0 0 0
#配置rs后端机器配置
4. 所有RS配置(nginx1,nginx2)
配置好网站服务器，测试所有RS
[root@test-nginx1 ~]# ip addr add dev lo 192.168.246.11/32
[root@test-nginx1 ~]# sysctl -p
[root@test-nginx1 ~]# systemctl start nginx
测试
输入网址192.168.116.11 //会出来192.168.116.（131/132）的页面
6、配置（lvs--keepalived)--192.168.116.156（BACKUP）
1. 主/备调度器安装软件
[root@lvs-keepalived-master ~]# yum -y install ipvsadm keepalived
2、配置keepalived,conf配置文件
[root@lvs-keepalived-slave ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
router_id lvs-keepalived-slave （修改的）
}
vrrp_instance VI_1 {
state BACKUP （修改的）
interface ens33 （修改的）
virtual_router_id 80
priority 50 （修改的）
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.116.11/32 （修改的）
}
}
virtual_server 192.168.246.11 80 { （修改的）
delay_loop 6
lb_algo rr （修改的）
lb_kind DR （修改的）
protocol TCP
real_server 192.168.116.131 80 { （修改的）
weight 1
inhibit_on_failure
TCP_CHECK {
connect_port 80
connect_timeout 3
}
}
real_server 192.168.116.132 80 { （修改的）
weight 1
inhibit_on_failure
TCP_CHECK {
connect_timeout 3
connect_port 80
}
}
3. 启动KeepAlived（主备均启动）
[root@lvs-keepalived-master ~]# systemctl start keepalived
[root@lvs-keepalived-master ~]# systemctl enable keepalived
# 查看ip
[root@lvs-keepalived-master ~]# ipvsadm -Ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.246.110:80 rr persistent 20
-> 192.168.246.162:80 Route 1 0 0
-> 192.168.246.163:80 Route 0 0 0
#配置rs后端机器配置
4. 所有RS配置(nginx1,nginx2)
配置好网站服务器，测试所有RS
[root@test-nginx1 ~]# ip addr add dev lo 192.168.246.11/32
[root@test-nginx1 ~]# sysctl -p
[root@test-nginx1 ~]# systemctl start nginx
测试
输入网址192.168.116.11 //会出来192.168.116.（131/132）的页面
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