image.png
虚拟VIP浮动
- 安装
yum install keepalived
- 设置ka的预先配置环境
1. 设置基于key的ssh验证
2. 添加ka server的dns解析至/etc/hosts文件
- 配置文件
vim /etc/keepalived/keepalived.conf
## maskter
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalive@localhost
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id ka1
vrrp_mcast_group4 224.100.100.100 #设置多播地址
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1 # 公告的时间间隔
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.80.100/24
}
}
## backup
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalive@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id ka1
vrrp_mcast_group4 224.100.100.100
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 80
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.80.100/24
}
}
# 测试
tcpdump -i eth0 -nn host 224.100.100.100
触发脚本施行
# 当时间发生时，触发/etc/keepalived/ka_script.sh 执行
vrrp_instance VI_1 {
notify_master "/etc/keepalived/ka_script.sh master"
notify_backup "/etc/keepalived/ka_script.sh backup"
notify_fault "/etc/keepalived/ka_script.sh fault"
}
双主配置
- ka1
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalive@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id ka1
vrrp_mcast_group4 224.100.100.100
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 66
priority 100
advert_int 1
notify_master "/etc/keepalived/ka_script.sh master"
notify_backup "/etc/keepalived/ka_script.sh backup"
notify_fault "/etc/keepalived/ka_script.sh fault"
authentication {
auth_type PASS
auth_pass 123456
}
virtual_ipaddress {
192.168.80.100/24
}
}
vrrp_instance VI_2 {
state BACKUP
interface eth0
virtual_router_id 88
priority 80
advert_int 1
notify_master "/etc/keepalived/ka_script.sh master"
notify_backup "/etc/keepalived/ka_script.sh backup"
notify_fault "/etc/keepalived/ka_script.sh fault"
authentication {
auth_type PASS
auth_pass 123456
}
virtual_ipaddress {
192.168.80.200/24 dev eth0 label eth0:2
}
}
- ka2
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalive@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id ka1
vrrp_mcast_group4 224.100.100.100
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 66
priority 80
advert_int 1
notify_master "/etc/keepalived/ka_script.sh master"
notify_backup "/etc/keepalived/ka_script.sh backup"
notify_fault "/etc/keepalived/ka_script.sh fault"
authentication {
auth_type PASS
auth_pass 123456
}
virtual_ipaddress {
192.168.80.100/24
}
}
vrrp_instance VI_2 {
state MASTER
interface eth0
virtual_router_id 88
priority 100
advert_int 1
notify_master "/etc/keepalived/ka_script.sh master"
notify_backup "/etc/keepalived/ka_script.sh backup"
notify_fault "/etc/keepalived/ka_script.sh fault"
authentication {
auth_type PASS
auth_pass 123456
}
virtual_ipaddress {
192.168.80.200/24 dev eth0 label eth0:2
}
}
单主KeepAlived + LVS
- ka1
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalive@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id ka1
vrrp_mcast_group4 224.100.100.100
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 66
priority 100
advert_int 1
notify_master "/etc/keepalived/ka_script.sh master"
notify_backup "/etc/keepalived/ka_script.sh backup"
notify_fault "/etc/keepalived/ka_script.sh fault"
authentication {
auth_type PASS
auth_pass 123456
}
virtual_ipaddress {
192.168.80.100/24
}
}
virtual_server 192.168.80.100 80 {
delay_loop 6
lb_algo rr
lb_kind DR
protocol TCP
sorry_server 127.0.0.1 80
real_server 192.168.80.13 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
real_server 192.168.80.14 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
- ka2
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalive@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id ka1
vrrp_mcast_group4 224.100.100.100
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 66
priority 80
advert_int 1
notify_master "/etc/keepalived/ka_script.sh master"
notify_backup "/etc/keepalived/ka_script.sh backup"
notify_fault "/etc/keepalived/ka_script.sh fault"
authentication {
auth_type PASS
auth_pass 123456
}
virtual_ipaddress {
192.168.80.100/24
}
}
virtual_server 192.168.80.100 80 {
delay_loop 6
lb_algo rr
lb_kind DR
protocol TCP
sorry_server 127.0.0.1 80
real_server 192.168.80.13 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
real_server 192.168.80.14 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
