双主模型高可用负载均衡集群的实现（keepalived+lvs
实现keepalived双主模型lvs高可用集群一、拓扑图
https://s2.运维网.com/wyfs02/M01/9A/9B/wKiom1lYXyXjsm_NAAC0uSYuwXI603.gif
二、环境准备
两台负载均衡调度器，两台web服务器。
调度器A环境:
VS:一张网卡
DIP:192.168.0.7/24
VIP（主）：192.168.0.200
VIP(备)：192.168.0.201
软件包：yum install -y keepalived ipvsadm nginx(作用：sorry-server服务)
调度器B环境：
VS:一张网卡
DIP:192.168.0.8/24
VIP（主）：192.168.0.201
VIP(备)：192.168.0.200
软件包：yum install -y keepalived ipvsadm nginx(作用：sorry-server服务)
web服务器A环境：
RS1:192.168.0.3
lo:0:192.168.0.200
lo:1:192.168.0.201
软件包：yum install -y httpd
web服务器B环境：
RS1:192.168.0.4
lo:0:192.168.0.200
lo:1:192.168.0.201
软件包：yum install -y httpd
三、配置
调度器A配置
主要操作：ip配置，时间同步、hosts文件更改，修改主机名（确保主从节点能够通信）、keepalived.conf配置文件更改，通知脚本配置(两个脚本)，ipvsadm规则查看
ip配置
# ip a
1: lo:mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33:mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:0c:d2:06 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.7/24 brd 192.168.0.255 scope global ens33
valid_lft forever preferred_lft forever
inet 192.168.0.200/24 scope global secondary ens33:1
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe0c:d206/64 scope link
valid_lft forever preferred_lft forever 时间同步
ntpdate ntp-server-ip #时间服务器的ip hosts文件
# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 node1
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 node1
192.168.0.8 node2
192.168.0.7 node1 主机名修改
hostnamectl set-hostname node1 keepalived.conf配置文件更改
# cat keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalived@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 10
router_id node1
vrrp_mcast_group4 224.0.0.223
}
vrrp_instance VI_1 {
state MASTER
interface ens33
virtual_router_id 51
priority 110
advert_int 1
authentication {
auth_type PASS
auth_pass JzvnmfkY
}
virtual_ipaddress {
192.168.0.200/24 dev ens33 label ens33:1
}
notify_master "/etc/keepalived/notify1.sh master"
notify_backup "/etc/keepalived/notify1.sh backup"
notify_fault "/etc/keepalived/notify1.sh fault"
}
virtual_server 192.168.0.200 80 {
delay_loop 3
lb_algo wrr
lb_kind DR
protocol TCP
sorry_server 127.0.0.1 80
real_server 192.168.0.3 80 {
weight 2
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
real_server 192.168.0.4 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
vrrp_instance VI_2 {
state BACKUP
interface ens33
virtual_router_id 52
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass JzvnmfkY
}
virtual_ipaddress {
192.168.0.201/24 dev ens33 label ens33:2
}
notify_master "/etc/keepalived/notify2.sh master"
notify_backup "/etc/keepalived/notify2.sh backup"
notify_fault "/etc/keepalived/notify2.sh fault"
}
virtual_server 192.168.0.201 80 {
delay_loop 3
lb_algo wrr
lb_kind DR
protocol TCP
sorry_server 127.0.0.1 80
real_server 192.168.0.3 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
real_server 192.168.0.4 80 {
weight 2
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
} 通知脚本配置
脚本1
# cat notify1.sh
#!/bin/bash
#description: An example of notify script
#
vip=192.168.0.200
contact='root@localhost'
notify(){
local mailsubject="$(hostname) to be $1:$vip floating"
local mailbody="$(date +'%F %T'):vrrp1 transition,$(hostname) changed to be $1"
echo "$mailbody" | mail -s "$mailsubject" $contact
}
case $1 in
master)
notify master
;;
backup)
notify backup
;;
fault)
notify fault
;;
*)
echo "Usage:$(basename $0) {master|backup|fault}"
exit 1
;;
esac 脚本2
# cat notify2.sh
#!/bin/bash
#description: An example of notify script
#
vip=192.168.0.201
contact='root@localhost'
notify(){
local mailsubject="$(hostname) to be $1:$vip floating"
local mailbody="$(date +'%F %T'):vrrp2 transition,$(hostname) changed to be $1"
echo "$mailbody" | mail -s "$mailsubject" $contact
}
case $1 in
master)
notify master
;;
backup)
notify backup
;;
fault)
notify fault
;;
*)
echo "Usage:$(basename $0) {master|backup|fault}"
exit 1
;;
esac ipvsadm规则查看
# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP192.168.0.200:80 wrr
-> 192.168.0.3:80 Route 2 0 0
-> 192.168.0.4:80 Route 1 0 0
TCP192.168.0.201:80 wrr
-> 192.168.0.3:80 Route 1 0 0
-> 192.168.0.4:80 Route 2 0 0 调度器B配置
主要操作：ip配置，时间同步、hosts文件更改，修改主机名（确保主从节点能够通信）、keepalived.conf配置文件更改，通知脚本配置(两个脚本)，ipvsadm规则查看
ip配置
# ip a
1: lo:mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33:mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:3f:e3:9e brd ff:ff:ff:ff:ff:ff
inet 192.168.0.8/24 brd 192.168.0.255 scope global ens33
valid_lft forever preferred_lft forever
inet 192.168.0.201/24 scope global secondary ens33:2
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe3f:e39e/64 scope link
valid_lft forever preferred_lft forever 时间同步
ntpdate ntp-server-ip
hosts文件更改
# cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 node2
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 node2
192.168.0.7 node1
192.168.0.8 node2 主机名修改
hostnamectl set-hostname node2 keepalived.conf配置文件更改
# cat keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keepalived@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 10
router_id node2
vrrp_mcast_group4 224.0.0.223
}
vrrp_instance VI_1 {
state BACKUP
interface ens33
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass JzvnmfkY
}
virtual_ipaddress {
192.168.0.200/24 dev ens33 label ens33:1
}
notify_master "/etc/keepalived/notify1.sh master"
notify_backup "/etc/keepalived/notify1.sh backup"
notify_fault "/etc/keepalived/notify1.sh fault"
}
virtual_server 192.168.0.200 80 {
delay_loop 3
lb_algo wrr
lb_kind DR
protocol TCP
sorry_server 127.0.0.1 80
real_server 192.168.0.3 80 {
weight 2
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
real_server 192.168.0.4 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
vrrp_instance VI_2 {
state MASTER
interface ens33
virtual_router_id 52
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass JzvnmfkY
}
virtual_ipaddress {
192.168.0.201/24 dev ens33 label ens33:2
}
notify_master "/etc/keepalived/notify2.sh master"
notify_backup "/etc/keepalived/notify2.sh backup"
notify_fault "/etc/keepalived/notify2.sh fault"
}
virtual_server 192.168.0.201 80 {
delay_loop 3
lb_algo wrr
lb_kind DR
protocol TCP
sorry_server 127.0.0.1 80
real_server 192.168.0.3 80 {
weight 1
HTTP_GET {
url {
path /
status_code 200
}
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
real_server 192.168.0.4 80 {
weight 2
HTTP_GET {
url {
path /
status_code 200
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
} 通知脚本配置(同调度器A的脚本一致)
脚本1
# cat notify1.sh
#!/bin/bash
#description: An example of notify script
#
vip=192.168.0.200
contact='root@localhost'
notify(){
local mailsubject="$(hostname) to be $1:$vip floating"
local mailbody="$(date +'%F %T'):vrrp1 transition,$(hostname) changed to be $1"
echo "$mailbody" | mail -s "$mailsubject" $contact
}
case $1 in
master)
notify master
;;
backup)
notify backup
;;
fault)
notify fault
;;
*)
echo "Usage:$(basename $0) {master|backup|fault}"
exit 1
;;
esac 脚本2
# cat notify2.sh
#!/bin/bash
#description: An example of notify script
#
vip=192.168.0.201
contact='root@localhost'
notify(){
local mailsubject="$(hostname) to be $1:$vip floating"
local mailbody="$(date +'%F %T'):vrrp2 transition,$(hostname) changed to be $1"
echo "$mailbody" | mail -s "$mailsubject" $contact
}
case $1 in
master)
notify master
;;
backup)
notify backup
;;
fault)
notify fault
;;
*)
echo "Usage:$(basename $0) {master|backup|fault}"
exit 1
;;
esac web服务器A配置
ip配置
1: lo:mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet 192.168.0.201/32 brd 192.168.0.201 scope global lo:1
valid_lft forever preferred_lft forever
inet 192.168.0.200/32 brd 192.168.0.200 scope global lo:0
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33:mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:ab:50:14 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.4/24 brd 192.168.0.255 scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:feab:5014/64 scope link
valid_lft forever preferred_lft forever lvs-dr-预配置脚本
脚本1
# cat vip200-setrs.sh
#!/bin/bash
#
vip=192.168.0.200
mask='255.255.255.255'
case $1 in
start)
echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
ifconfig lo:0 $vip netmask $mask broadcast $vip up
route add -host $vip dev lo:0
;;
stop)
ifconfig lo:0 down
echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce
;;
*)
echo "Usage $(basename $0) start|stop"
exit 1
;;
esac
脚本2
# cat vip201-setrs.sh
#!/bin/bash
#
vip=192.168.0.201
mask='255.255.255.255'
case $1 in
start)
echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
ifconfig lo:1 $vip netmask $mask broadcast $vip up
route add -host $vip dev lo:1
;;
stop)
ifconfig lo:1 down
echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce
echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce
;;
*)
echo "Usage $(basename $0) start|stop"
exit 1
;;
esac web服务器B配置
ip配置
# ip a
1: lo:mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet 192.168.0.201/32 brd 192.168.0.201 scope global lo:1
valid_lft forever preferred_lft forever
inet 192.168.0.200/32 brd 192.168.0.200 scope global lo:0
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33:mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:ab:50:14 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.4/24 brd 192.168.0.255 scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:feab:5014/64 scope link
valid_lft forever preferred_lft forever lvs-dr-预设脚本
脚本内容同web服务A相同，拷贝过去即可
vip200-setrs.shvip201-setrs.sh
客户端测试
ip配置
# ip a
1: lo:mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33:mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:d0:37:77 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.14/24 brd 192.168.0.255 scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fed0:3777/64 scope link
valid_lft forever preferred_lft forever curl测试
# for i in {1..10};do curl http://192.168.0.200;done
backend server1
backend server1
backend server2
backend server1
backend server1
backend server2
backend server1
backend server1
backend server2
backend server1
# for i in {1..10};do curl http://192.168.0.201;done
backend server1
backend server2
backend server2
backend server1
backend server2
backend server2
backend server1
backend server2
backend server2
backend server1 四、健康状态查看以及故障排查参考方式
方式1：查看keepalived的切换过程
systemctl status keepalived
方式2：mail命令查看邮件
方式3：查看web服务器日志
tail /var/log/httpd/access_log
tail /var/log/httpd/error_log
五、模拟故障
1.模拟调度器B故障
调度器B上操作
停止keepalived服务
systemctl stop keepalived
# systemctl status keepalived #分析以下信息，VIP2已移除
Jul 02 10:18:53 node2 systemd: Stopping LVS and VRRP High Availability Monitor...
Jul 02 10:18:53 node2 Keepalived_vrrp: VRRP_Instance(VI_2) sending 0 priority
Jul 02 10:18:53 node2 Keepalived_vrrp: VRRP_Instance(VI_2) removing protocol VIPs.
Jul 02 10:18:53 node2 systemd: Stopped LVS and VRRP High Availability Monitor. 查看ip
# ip a #VIP2移除
1: lo:mtu 65536 qdisc noqueue state UNKNOWN qlen 1
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens33:mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 00:0c:29:3f:e3:9e brd ff:ff:ff:ff:ff:ff
inet 192.168.0.8/24 brd 192.168.0.255 scope global ens33
valid_lft forever preferred_lft forever
inet6 fe80::20c:29ff:fe3f:e39e/64 scope link
valid_lft forever preferred_lft forever 调度器A操作
# systemctl status keepalived #分析以下信息，可知VIP漂移到调度A
● keepalived.service - LVS and VRRP High Availability Monitor
Loaded: loaded (/usr/lib/systemd/system/keepalived.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2017-07-02 10:07:36 CST; 17min ago
Process: 20019 ExecStart=/usr/sbin/keepalived $KEEPALIVED_OPTIONS (code=exited, status=0/SUCCESS)
Main PID: 20020 (keepalived)
CGroup: /system.slice/keepalived.service
├─20020 /usr/sbin/keepalived -D
├─20021 /usr/sbin/keepalived -D
└─20022 /usr/sbin/keepalived -D
Jul 02 10:07:37 node1 Keepalived_vrrp: Opening script file /etc/keepalived/notify1.sh
Jul 02 10:07:37 node1 Keepalived_healthcheckers: Netlink reflector reports IP 192.168.0.200 added
Jul 02 10:07:42 node1 Keepalived_vrrp: VRRP_Instance(VI_1) Sending gratuitous ARPs on ens33 for 192.168.0.200
Jul 02 10:18:54 node1 Keepalived_vrrp: VRRP_Instance(VI_2) Transition to MASTER STATE
Jul 02 10:18:55 node1 Keepalived_vrrp: VRRP_Instance(VI_2) Entering MASTER STATE
Jul 02 10:18:55 node1 Keepalived_vrrp: VRRP_Instance(VI_2) setting protocol VIPs.
Jul 02 10:18:55 node1 Keepalived_vrrp: VRRP_Instance(VI_2) Sending gratuitous ARPs on ens33 for 192.168.0.201
Jul 02 10:18:55 node1 Keepalived_vrrp: Opening script file /etc/keepalived/notify2.sh
Jul 02 10:18:55 node1 Keepalived_healthcheckers: Netlink reflector reports IP 192.168.0.201 added
Jul 02 10:19:00 node1 Keepalived_vrrp: VRRP_Instance(VI_2) Sending gratuitous ARPs on ens33 for 192.168.0.201 查看邮件
# mail #node1成为VIP192.168.0.201的主节点
Heirloom Mail version 12.5 7/5/10.Type ? for help.
"/var/spool/mail/root": 1 message
> 1 root Sun Jul2 10:1819/702 "node1 to be master:192.168.0.201 floating"
& 1
Message1:
From root@node1.localdomainSun Jul2 10:18:55 2017
Return-Path:
X-Original-To: root@localhost
Delivered-To: root@localhost.localdomain
Date: Sun, 02 Jul 2017 10:18:55 +0800
To: root@localhost.localdomain
Subject: node1 to be master:192.168.0.201 floating
User-Agent: Heirloom mailx 12.5 7/5/10
Content-Type: text/plain; charset=us-ascii
From: root@node1.localdomain (root)
Status: RO
2017-07-02 10:18:55:vrrp2 transition,node1 changed to be master 2.模拟web服务器A故障(RS1)
webA上操作
# systemctl stop httpd 调度器A上操作
查看邮件
# mail #分析以下信息，可知RS1宕机
Heirloom Mail version 12.5 7/5/10.Type ? for help.
"/var/spool/mail/root": 4 messages 2 new
1 root Sun Jul2 10:1819/702 "node1 to be master:192.168.0.201 floating"
2 root Sun Jul2 10:2819/702 "node1 to be backup:192.168.0.201 floating"
>N3 keepalived@localhostSun Jul2 10:2817/642 " Realserver :80 - DOWN"
N4 keepalived@localhostSun Jul2 10:2817/642 " Realserver :80 - DOWN" 客户端请求查看
# curl http://192.168.0.200 #只能访问到RS2
backend server2 调度器B上操作
# mail #分析以下信息，可知RS1宕机
Heirloom Mail version 12.5 7/5/10.Type ? for help.
"/var/spool/mail/root": 4 messages 2 new
1 root Sun Jul2 10:2819/702 "node2 to be backup:192.168.0.200 floating"
2 root Sun Jul2 10:2819/702 "node2 to be master:192.168.0.201 floating"
>N3 keepalived@localhostSun Jul2 10:2817/642 " Realserver :80 - DOWN"
N4 keepalived@localhostSun Jul2 10:2817/642 " Realserver :80 - DOWN" 3.模拟web服务双机故障
RS1和RS2停止web服务
调度器A上操作
查看邮件 #分析以下信息，可知双机宕机
Heirloom Mail version 12.5 7/5/10.Type ? for help.
"/var/spool/mail/root": 6 messages 2 new
1 root Sun Jul2 10:1819/702 "node1 to be master:192.168.0.201 floating"
2 root Sun Jul2 10:2819/702 "node1 to be backup:192.168.0.201 floating"
3 keepalived@localhostSun Jul2 10:2818/653 " Realserver :80 - DOWN"
4 keepalived@localhostSun Jul2 10:2818/653 " Realserver :80 - DOWN"
>N5 keepalived@localhostSun Jul2 10:3617/642 " Realserver :80 - DOWN"
N6 keepalived@localhostSun Jul2 10:3617/642 " Realserver :80 - DOWN" 查看keepalived状态
# systemctl status keepalived #分析以下信息，双机宕机，启动sorry服务器
● keepalived.service - LVS and VRRP High Availability Monitor
Loaded: loaded (/usr/lib/systemd/system/keepalived.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2017-07-02 10:07:36 CST; 30min ago
Process: 20019 ExecStart=/usr/sbin/keepalived $KEEPALIVED_OPTIONS (code=exited, status=0/SUCCESS)
Main PID: 20020 (keepalived)
CGroup: /system.slice/keepalived.service
├─20020 /usr/sbin/keepalived -D
├─20021 /usr/sbin/keepalived -D
└─20022 /usr/sbin/keepalived -D
Jul 02 10:36:31 node1 Keepalived_healthcheckers: Removing alive servers from the pool for VS :80
Jul 02 10:36:31 node1 Keepalived_healthcheckers: Remote SMTP server :25 connected.
Jul 02 10:36:31 node1 Keepalived_healthcheckers: SMTP alert successfully sent.
Jul 02 10:36:32 node1 Keepalived_healthcheckers: Error connecting server :80.
Jul 02 10:36:32 node1 Keepalived_healthcheckers: Removing service :80 from VS :80
Jul 02 10:36:32 node1 Keepalived_healthcheckers: Lost quorum 1-0=1 > 0 for VS :80
Jul 02 10:36:32 node1 Keepalived_healthcheckers: Adding sorry server :80 to VS :80
Jul 02 10:36:32 node1 Keepalived_healthcheckers: Removing alive servers from the pool for VS :80
Jul 02 10:36:32 node1 Keepalived_healthcheckers: Remote SMTP server :25 connected.
Jul 02 10:36:32 node1 Keepalived_healthcheckers: SMTP alert successfully sent. 客户端请求
# curl http://192.168.0.201 #请求至sorry服务器的web页面
sorry server
# curl http://192.168.0.200
sorry server
页:
[1]