redis 主从配置，自动切换
global_defs {lvs_id LVS_redis
}
vrrp_script chk_redis {
script "/etc/keepalived/scripts/redis_check.sh"
weight-20
interval 2
}
vrrp_instance VI_1 {
state backup
interface eth0
virtual_router_id 51
priority 190
advert_int5
track_script {
chk_redis
}
virtual_ipaddress {
192.168.56.100
}
notify_master /etc/keepalived/scripts/redis_master.sh
notify_backup /etc/keepalived/scripts/redis_backup.sh
notify_fault/etc/keepalived/scripts/redis_fault.sh
notify_stop /etc/keepalived/scripts/redis_stop.sh
}
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