1. 主脚本

bash
#  vim install_keepalive.sh

#!/bin/bash

echo "该操作会清除现在已用的keepalived服务，请谨慎使用。
相关操作：
1. /opt/keepalived开头的文件
2. /usr/local/keepalived开头的文件
3. 备份/etc/keepalived/keepalived.conf为/etc/keepalived/keepalived.confbak
"

read -p "请输入模型(1|2):
1): 单主模型
2): 主备模型
" ARCH


if [ $ARCH -eq 1 ];then
read -p "请输入需要安装keepalived的版本：" VERSION
read -p "请输入绑定的网卡：" CARD_NAME
read -p "请输入VIP：" VIP
read -p "请输入MASTE的ip地址：" MASTE_IP
#清理文件
rm -rf /opt/keepalived*
rm -rf /usr/local/keepalived*
mv /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.confbak

ssh-copy-id root@$MASTE_IP
scp /root/install_keepalive_master.sh root@$MASTE_IP:/root
ssh  root@$MASTE_IP "bash /root/install_keepalive_master.sh $VERSION MASTER $VIP $CARD_NAME"
fi 


if [ $ARCH -eq 2 ];then
read -p "请输入需要安装keepalived的版本：" VERSION
read -p "请输入绑定的网卡：" CARD_NAME
read -p "请输入VIP：" VIP
read -p "请输入MASTE的ip地址：" MASTE_IP
read -p "请输入BACKUP的ip地址：" BACKUP_IP

ssh-copy-id root@$MASTE_IP
ssh-copy-id root@$BACKUP_IP
# 主
scp /root/install_keepalive_master.sh root@$MASTE_IP:/root
ssh  root@$MASTE_IP "rm -rf /opt/keepalived* && rm -rf /usr/local/keepalived* && mv /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.confbak"
ssh  root@$MASTE_IP "bash /root/install_keepalive_master.sh $VERSION MASTER $VIP $CARD_NAME"

#备
scp /root/install_keepalive_backup.sh root@$BACKUP_IP:/root
ssh  root@$BACKUP_IP "rm -rf /opt/keepalived* && rm -rf /usr/local/keepalived* && mv /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.confbak"
ssh  root@$BACKUP_IP "bash /root/install_keepalive_backup.sh $VERSION BACKUP $VIP $CARD_NAME"

fi

2. 安装主服务器脚本

bash
# vim install_keepalive_master.sh
#!/bin/bash
VERSION=$1
ROLE=$2
VIP=$3
CARD_NAME=$4

cat>/etc/keepalived/keepalived.conf<<EOF
! Configuration File for keepalived

global_defs {
   notification_email {
     acassen
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

vrrp_instance VI_1 {
    state $ROLE
    interface $CARD_NAME
    garp_master_delay 10
    smtp_alert
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        $VIP dev $CARD_NAME  label $CARD_NAME:1
    }
}
EOF


apt-get install curl gcc make libssl-dev libnl-3-dev libnl-genl-3-dev libsnmp-dev libnl-route-3-dev -y
cd /opt/
curl --progress https://keepalived.org/software/keepalived-$VERSION.tar.gz | tar xz
cd keepalived-$VERSION
./configure --prefix=/usr/local/keepalived-$VERSION

make && make install
ln -s /usr/local/keepalived-$VERSION /usr/local/keepalived

/usr/local/keepalived/sbin/keepalived 

3. 安装备用服务器脚本

bash
# vim install_keepalive_backup.sh

#!/bin/bash
VERSION=$1
ROLE=$2
VIP=$3
CARD_NAME=$4

cat>/etc/keepalived/keepalived.conf<<EOF
! Configuration File for keepalived

global_defs {
   notification_email {
     acassen
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}

vrrp_instance VI_1 {
    state $ROLE
    interface $CARD_NAME
    garp_master_delay 10
    smtp_alert
    virtual_router_id 51
    priority 80
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        $VIP dev $CARD_NAME  label $CARD_NAME:1
    }
}
EOF


apt-get install curl gcc make libssl-dev libnl-3-dev libnl-genl-3-dev libsnmp-dev libnl-route-3-dev -y
cd /opt/
curl --progress https://keepalived.org/software/keepalived-$VERSION.tar.gz | tar xz
cd keepalived-$VERSION
./configure --prefix=/usr/local/keepalived-$VERSION

make && make install
ln -s /usr/local/keepalived-$VERSION /usr/local/keepalived

/usr/local/keepalived/sbin/keepalived 

4. 操作

演示视频