-配置keepalived 雙機熱備-
mkdir /usr/local/keepalived/
tar -zxvf keepalived-2.0.6.tar.gz -c /usr/local/keepalived
cd /usr/local/keepalived/keepalived-2.0.6
./configure
make
make install
cp -r keepalived /etc/init.d/keepalived
mkdir /etc/keepalived/
cd /usr/local/keepalived/keepalived-2.0.6/keepalived/etc/keepalived
cp keepalived.conf /etc/keepalived/
cd /usr/local/keepalived/keepalived-2.0.6/keepalived/etc/sysconfig/
cp keepalived /etc/sysconfig/keepalived
cp /usr/local/keepalived/keepalived-2.0.6/bin/keepalived /usr/sbin
vi /etc/keepalived/keepalived.conf #以下是配置的內容
vrrp_instance vi_1
virtual_ipaddress
}以上修改了如下三項
1.priority 101 #master值要大於bakcup
2.更改網路介面
vrrp_instance vi_1 中inte***ce:ens33(ip addr命令中的網路)
3.192.168.67.100 是虛擬ip
啟動keepalived
service keepalived start或者systemctl start keepalived
備用排程伺服器 只有一項不同
priority 100
同樣配置完畢後啟動keepalived
注意:#vrrp_strict #這個注釋掉，否則可能造成物理機的瀏覽器無法訪問應用
啟動keepalived
service keepalived start
設定開機自啟動
systemctl enable keepalived.service
如果nginx死掉，虛擬ip不會自動切換，如果要nginx停止執行後虛擬ip自動切換，需要設定指令碼：
vi /etc/keepalived/keepalived.conf! configuration file for keepalived
global_defs
notification_email_from [email protected]
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id lvs_devel
vrrp_skip_check_adv_addr
#vrrp_strict
vrrp_garp_interval 0
vrrp_gna_interval 0
} vrrp_script chk_nginx
vrrp_instance vi_1
virtual_ipaddress
track_script
}
#!/bin/bash
if [ "$(ps aux | grep "nginx: master process"|grep -v grep)" == "" ]
then
#/etc/init.d/keepalived/keepalived stop
service keepalived stop
fi
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