keepalived+haproxy高可用
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环境:
主Haproxy服务器 192.168.80.100 keepalived+Haproxy
备Haproxy服务器 192.168.80.101 keepalived+Haproxy
web服务器1 192.168.80.102 httpd(nginx、tomcat)
web服务器2 192.168.80.103 httpd
80.100和80.101需要联网
———————————————————————————————————————
在80.100虚拟机上:
systemctl stop firewalld //关闭防火墙
setenforce 0 //关闭监控
cd /etc/yum.repos.d/ //进入目录
cp back/* ./ //把back里内容移动到上一个目录
ls //查看目录内容
yum install -y epel-release
yum install ntp -y //安装ntp
ntpdate time1.aliyun.com //同步网络时间
date
yum install keepalived -y //安装keepalived
cd //回到根目录
vi /etc/keepalived/keepalived.conf`
删除所有内容并添加以下内容:
! Configuration File for keepalived
global_defs {
route_id haproxy-01
}
vrrp_script haproxy { 定义一个热备脚本取名为haproxy
script "/opt/haproxy.sh" # 检测 haproxy 状态的脚本路径
interval 2 # 检测时间间隔
weight 2 # 如果条件成立,权重+2
}
vrrp_instance VI_1 {
state MASTER
interface ens32
virtual_router_id 51
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
track_script { # 将 track_script 块加入 instance 配置块
haproxy # 检查 HAProxy 服务是否存活
}
virtual_ipaddress {
192.168.80.188
}
}
:wq
scp /etc/keepalived/keepalived.conf [email protected]:/etc/keepalived/keepalived.conf //把keepalived.conf传送到80.101中
yes
root密码
yum install lrz* -y //安装上传软件
把haproxy软件包拉入
scp haproxy-1.5.15.tar.gz [email protected]:/root //把haproxy软件包传送到80.101中
密码
tar xf haproxy-1.5.15.tar.gz -C /opt/ //解压haproxy软件包
cd /opt/haproxy-1.5.15/
源码编译安装haproxy
yum install -y pcre-devel bzip2-devel gcc gcc-c++ make
make TARGET=linux26 PREFIX=/usr/local/haproxy //标识64为系统
make install PREFIX=/usr/local/haproxy
mkdir /etc/haproxy //创建目录
cd
useradd -s /sbin/nologin -M haproxy
id haproxy
cd /opt/haproxy-1.5.15/
cp examples/haproxy.cfg /etc/haproxy
vi /etc/haproxy/haproxy.cfg
修改以下内容:
# chroot /usr/share/haproxy 注释这一行
uid 1000
gid 1000
在default模块下
统计页面模块内容
listen admin_stats
bind 0.0.0.0:8089
stats enable
mode http
log global
stats uri /stats
stats realm Haproxy Statistics
stats auth admin:admin
#stats hide-version
stats admin if TRUE
stats refresh 30s
web服务器/终端
listen webcluster
bind 0.0.0.0:80
mode http
option httpchk GET /index.html
log global
maxconn 3000
balance roundrobin
server web01 192.168.80.102:80 check inter 2000 fall 5
server web02 192.168.80.103:80 check inter 2000 fall 5
:wq
cd /opt/
ls
vi haproxy.sh
#!/bin/bash
if [ $(ps -C haproxy --no-header | wc -l) -eq 0 ];then
/usr/sbin/haproxy -f /etc/haproxy/haproxy.cfg 启动haproxy服务
fi
sleep 2 等待2秒
if [ $(ps -C haproxy --no-header | wc -l) -eq 0 ];then
service keepalived stop
fi
:wq //保存退出
chmod +x /opt/haproxy.sh //给这个文件设置权限
cd /opt/haproxy-1.5.15/
cp examples/haproxy.init /etc/init.d/haproxy
chmod +x /etc/init.d/haproxy
ll /etc/init.d/haproxy
chkconfig --add haproxy
cat /var/log/messages
ln -s /usr/local/haproxy/sbin/haproxy /usr/sbin/haproxy //软链接
service haproxy start //启动服务
netstat -anpt | grep haproxy
在网页上输入192.168.80.100:8089/stats
scp haproxy.cfg [email protected]:/etc/haproxy.cfg //把haproxy.cfg 传送到80.101虚拟机上
密码
service haproxy stop
netstat -anpt | grep haproxy
systemctl start keepalived
ip addr show ens32
netstat -anpt | grep haproxy
————————————————————————————————————————
在80.101虚拟机上:
systemctl stop firewalld //关闭防火墙
setenforce 0 //关闭监控
cd /etc/yum.repos.d/ //进入目录
cp back/* ./ //把back里内容移动到上一个目录
ls //查看目录内容
yum install -y epel-release
yum install ntp -y //安装ntp
ntpdate time1.aliyun.com //同步网络时间
date
yum install keepalived -y //安装keepalived
cd //回到根目录
vi /etc/keepalived/keepalived.conf //进入成以下内容:
修改成以下内容:
ls
tar xf haproxy-1.5.15.tar.gz -C /opt/
cd /opt/haproxy-1.5.15/
源码编译安装haproxy
yum install -y pcre-devel bzip2-devel gcc gcc-c++ make
make TARGET=linux26 PREFIX=/usr/local/haproxy //标识64为系统
make install PREFIX=/usr/local/haproxy
mkdir /etc/haproxy
useradd -s /sbin/nologin -M haproxy
id haproxy
ls /etc/haproxy/
cp examples/haproxy.init /etc/init.d/haproxy
chmod +x /etc/init.d/haproxy //给这个文件设置权限
chkconfig --add haproxy
ln -s /usr/local/haproxy/sbin/haproxy /usr/sbin/haproxy //软链接
service haproxy start //启动服务
netstat -anpt | grep haproxy
service haproxy stop
netstat -anpt | grep haproxy
cd /opt/
vi haproxy.sh
#!/bin/bash
#Filename:
A=$(ip addr | grep 192.168.80.188/32 | grep -v grep | wc -l)
if [ $A -gt 0 ]; then
service haproxy start
else
service haproxy stop
fi
:wq
chmod +x haproxy.sh //设置权限
ll
systemctl start keepalived
ip addr show ens32
netstat -anpt | grep haproxy
————————————————————————————————————————
在80.102虚拟机上:
systemctl stop firewalld //关闭防火墙
setenforce 0 //关闭监控
yum install httpd -y //安装httpd
vi /etc/httpd/conf/httpd.conf
把ServerName www.example.com:80 前面的#删除
cd /var/www/html/ //进入这个目录
echo "<h1>server aa</h1>" > index.html
systemctl start httpd //启动服务
在网页上输入192.168.80.102
————————————————————————————————————————
在80.103虚拟机上:
systemctl stop firewalld //关闭防火墙
setenforce 0 //关闭监控
yum install httpd -y //安装httpd
vi /etc/httpd/conf/httpd.conf
把ServerName www.example.com:80 前面的#删除
cd /var/www/html/ //进入这个目录
echo "<h1>server bb</h1>" > index.html
systemctl start httpd //启动服务
在网页上输入192.168.80.103
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