我要评论一、需要的服务
nginx、keepalived、epel-release -y
二、安装命令
yum install -y keepalived #安装nginx以及拓展源 yum install epel-release -y yum install -y nginx
三、配置web服务
1、web1的nginx配置
[root@nginx1 ~]# vim /etc/nginx/conf.d/web.conf
server{
listen 8080;
root /usr/share/nginx/html;
index test.html;
}
[root@nginx1 ~]# echo "<h1>this is web1</h1>" > /usr/share/nginx/html/test.html2、web2的nginx配置
[root@nginx2 ~]# vim /etc/nginx/conf.d/web.conf
server{
listen 8080;
root /usr/share/nginx/html;
index test.html;
}
[root@nginx2 ~]# echo "<h1>this is web2</h1>" > /usr/share/nginx/html/test.html3、#启动
nginx -t nginx
四、 配置keepalived
以192.168.95.128 作为web1的master，192.168.95.129 作为web2为例
web1配置keepalived
vim /etc/keepalived/keepalived.conf
! configuration file for keepalived
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from alexandre.cassen@firewall.loc
smtp_server 192.168.95.128
smtp_connect_timeout 30
router_id lvs_devel
vrrp_skip_check_adv_addr
vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
}
vrrp_instance vi_1 {
state master
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type pass
auth_pass 1111
}
virtual_ipaddress {
192.168.95.128
}
}
virtual_server 192.168.95.128 443 {
delay_loop 6
lb_algo rr
lb_kind nat
persistence_timeout 50
protocol tcp
real_server 192.168.95.128 443 {
weight 1
ssl_get {
url {
path /
digest ff20ad2481f97b1754ef3e12ecd3a9cc
}
url {
path /mrtg/
digest 9b3a0c85a887a256d6939da88aabd8cd
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
web2配置keepalived
vim /etc/keepalived/keepalived.conf
! configuration file for keepalived
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from alexandre.cassen@firewall.loc
smtp_server 192.168.95.129
smtp_connect_timeout 30
router_id lvs_devel
vrrp_skip_check_adv_addr
vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
}
vrrp_instance vi_1 {
state backup
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type pass
auth_pass 1111
}
virtual_ipaddress {
192.168.95.129
}
}
virtual_server 192.168.95.129 443 {
delay_loop 6
lb_algo rr
lb_kind nat
persistence_timeout 50
protocol tcp
real_server 192.168.95.129 443 {
weight 1
ssl_get {
url {
path /
digest ff20ad2481f97b1754ef3e12ecd3a9cc
}
url {
path /mrtg/
digest 9b3a0c85a887a256d6939da88aabd8cd
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
五、脚本编写
mkdir /tools
cd /tools
# keepalived通知脚本
vim master.sh
ip=$(hostname -i | awk '{print $1}')
dt=$(date+'%y%m%d %h:%m:%s')
echo "$0--${ip}--${dt}" >> /tmp/kp.log
vim backup.sh
ip=$(hostname -i | awk '{print $1}')
dt=$(date+'%y%m%d %h:%m:%s')
echo "$0--${ip}--${dt}" >> /tmp/kp.log
vim fault.sh
ip=$(ip addr|grep inet| grep 192.168 |awk '{print $2}')
dt=$(date +'%y%m%d %h:%m:%s')
echo "$0--${ip}--${dt}" >> /tmp/kp.log
vim stop.sh
ip=$(ip addr|grep inet| grep 192.168| awk '{print $2}')
dt=$(date +'%y%m%d %h:%m:%s')
echo "$0--${ip}--${dt}" >> /tmp/kp.log
## keepalived健康检查脚本
vim nginx_check.sh
#!/bin/bash
result=`pidof nginx`
if [ ! -z "${result}" ];
then
exit 0
else
exit 1
fi
# 注意脚本授权，重启keepalived
cd /tools/ && chmod +x *.sh
systemctl restart keepalived.service六、放在浏览器测试
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