keepalivedの構築

sudo apt install keepalived

! Configuration File for keepalived
vrrp_script chk_haproxy {
    script "systemctl is-active haproxy"
}

vrrp_instance VI_1 {
    state BACKUP
    priority 50
    interface ens160
    garp_master_delay 10
    virtual_router_id 31
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass FUGAFUGA
    }
    virtual_ipaddress {
        192.168.100.10
    }
}

vrrp_instance VI_2 {
    state MASTER
    priority 100
    interface ens160
    virtual_router_id 32
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass HOGEHOGE
    }
    virtual_ipaddress {
        192.168.100.11
    }
    track_script {
        chk_haproxy
    }
}

! Configuration File for keepalived
vrrp_script chk_haproxy {
    script "systemctl is-active haproxy"
}

vrrp_instance VI_1 {
    state MASTER
    priority 100
    interface ens160
    garp_master_delay 10
    virtual_router_id 31
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass FUGAFUGA
    }
    virtual_ipaddress {
        192.168.100.10
    }
}

vrrp_instance VI_2 {
    state BACKUP
    priority 50
    interface ens160
    virtual_router_id 32
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass HOGEHOGE
    }
    virtual_ipaddress {
        192.168.100.11
    }
    track_script {
        chk_haproxy
    }
}

sudo systemctl stop keepalived