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DEVICE=eth0

ONBOOT=yes

BOOTPROTO=static

IPADDR=192.168.0.10

NETMASK=255.255.255.0

GATEWAY=192.168.0.1

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yum install nginx

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systemctl start nginx

systemctl stop nginx

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http {

upstream backend {

server 192.168.0.11:80;
server 192.168.0.12:80;

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}

server {

listen 80;
location / {
    proxy_pass http://backend;
}

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}

}

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yum install keepalived

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vrrp_script chk_nginx {

script "/usr/bin/pgrep nginx"
interval 2
weight -15

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}

vrrp_instance VI_1 {

state BACKUP
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
    auth_type PASS
    auth_pass 123456
}
virtual_ipaddress {
    192.168.0.100
}
track_script {
    chk_nginx
}

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}

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systemctl start keepalived

systemctl stop keepalived

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