实现keepalived双主模型lvs高可用集群
一、拓扑图
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
[root@node1keepalived]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> 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: <BROADCAST,MULTICAST,UP,LOWER_UP> 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
[root@node1 keepalived]# cat /etc/hosts127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 node1::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 node1192.168.0.8 node2192.168.0.7 node1
主机名修改
hostnamectl set-hostname node1
keepalived.conf配置文件更改
[root@localhost keepalived]# cat keepalived.conf! Configuration File for keepalivedglobal_defs { notification_email { root@localhost } notification_email_from keepalived@localhost smtp_server 127.0.0.1 smtp_connect_timeout 10 router_id node1vrrp_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
[root@node1 keepalived]# cat notify1.sh #!/bin/bash#description: An example of notify script#vip=192.168.0.200contact='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 $1 inmaster)notify master;;backup)notify backup;;fault)notify fault;;*)echo "Usage:$(basename $0) {master|backup|fault}"exit 1;;esac
脚本2
[root@node1 keepalived]# cat notify2.sh #!/bin/bash#description: An example of notify script#vip=192.168.0.201contact='root@localhost'notify(){local mailsubject="$(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 $1 inmaster)notify master;;backup)notify backup;;fault)notify fault;;*)echo "Usage:$(basename $0) {master|backup|fault}"exit 1;;esac
ipvsadm规则查看
[root@node1 keepalived]# ipvsadm -lnIP Virtual Server version 1.2.1 (size=4096)Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConnTCP 192.168.0.200:80 wrr -> 192.168.0.3:80 Route 2 0 0 -> 192.168.0.4:80 Route 1 0 0 TCP 192.168.0.201:80 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
[root@node2 keepalived]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> 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 forever2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> 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
[root@node2 keepalived]# cat /etc/hosts127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 node2::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 node2192.168.0.7 node1192.168.0.8 node2
主机名修改
hostnamectl set-hostname node2
keepalived.conf配置文件更改
[root@localhost keepalived]# cat keepalived.conf ! Configuration File for keepalivedglobal_defs { notification_email { root@localhost } notification_email_from keepalived@localhost smtp_server 127.0.0.1 smtp_connect_timeout 10 router_id node2vrrp_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 TCPsorry_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 TCPsorry_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
[root@node2 keepalived]# cat notify1.sh #!/bin/bash#description: An example of notify script#vip=192.168.0.200contact='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 $1 inmaster)notify master;;backup)notify backup;;fault)notify fault;;*)echo "Usage:$(basename $0) {master|backup|fault}"exit 1;;esac
脚本2
[root@node2 keepalived]# cat notify2.sh #!/bin/bash#description: An example of notify script#vip=192.168.0.201contact='root@localhost'notify(){local mailsubject="$(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 $1 inmaster)notify master;;backup)notify backup;;fault)notify fault;;*)echo "Usage:$(basename $0) {master|backup|fault}"exit 1;;esac
web服务器A配置
ip配置
1: lo: <LOOPBACK,UP,LOWER_UP> 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 forever2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> 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
[root@localhost ~]# cat vip200-setrs.sh #!/bin/bash#vip=192.168.0.200mask='255.255.255.255'case $1 instart)echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignoreecho 1 > /proc/sys/net/ipv4/conf/lo/arp_ignoreecho 2 > /proc/sys/net/ipv4/conf/all/arp_announceecho 2 > /proc/sys/net/ipv4/conf/lo/arp_announceifconfig lo:0 $vip netmask $mask broadcast $vip uproute add -host $vip dev lo:0;;stop)ifconfig lo:0 downecho 0 > /proc/sys/net/ipv4/conf/all/arp_ignoreecho 0 > /proc/sys/net/ipv4/conf/lo/arp_ignoreecho 0 > /proc/sys/net/ipv4/conf/all/arp_announceecho 0 > /proc/sys/net/ipv4/conf/lo/arp_announce;;*) echo "Usage $(basename $0) start|stop"exit 1;;esac
脚本2
[root@localhost ~]# cat vip201-setrs.sh #!/bin/bash#vip=192.168.0.201mask='255.255.255.255'case $1 instart)echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignoreecho 1 > /proc/sys/net/ipv4/conf/lo/arp_ignoreecho 2 > /proc/sys/net/ipv4/conf/all/arp_announceecho 2 > /proc/sys/net/ipv4/conf/lo/arp_announceifconfig lo:1 $vip netmask $mask broadcast $vip uproute add -host $vip dev lo:1;;stop)ifconfig lo:1 downecho 0 > /proc/sys/net/ipv4/conf/all/arp_ignoreecho 0 > /proc/sys/net/ipv4/conf/lo/arp_ignoreecho 0 > /proc/sys/net/ipv4/conf/all/arp_announceecho 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
[root@localhost ~]# ip a1: lo: <LOOPBACK,UP,LOWER_UP> 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 forever2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> 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.sh vip201-setrs.sh
客户端测试
ip配置
[root@localhost ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> 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 forever2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> 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
[root@localhost ~]# for i in {1..10};do curl http://192.168.0.200;donebackend server1backend server1backend server2backend server1backend server1backend server2backend server1backend server1backend server2backend server1[root@localhost ~]# for i in {1..10};do curl http://192.168.0.201;donebackend server1backend server2backend server2backend server1backend server2backend server2backend server1backend server2backend server2backend 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[root@node2 keepalived]# systemctl status keepalived #分析以下信息，VIP2已移除Jul 02 10:18:53 node2 systemd[1]: Stopping LVS and VRRP High Availability Monitor...Jul 02 10:18:53 node2 Keepalived_vrrp[50773]: VRRP_Instance(VI_2) sending 0 priorityJul 02 10:18:53 node2 Keepalived_vrrp[50773]: VRRP_Instance(VI_2) removing protocol VIPs.Jul 02 10:18:53 node2 systemd[1]: Stopped LVS and VRRP High Availability Monitor.
查看ip
[root@node2 keepalived]# ip a #VIP2移除1: lo: <LOOPBACK,UP,LOWER_UP> 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 forever2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> 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
[root@node1 keepalived]# 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 -DJul 02 10:07:37 node1 Keepalived_vrrp[20022]: Opening script file /etc/keepalived/notify1.shJul 02 10:07:37 node1 Keepalived_healthcheckers[20021]: Netlink reflector reports IP 192.168.0.200 addedJul 02 10:07:42 node1 Keepalived_vrrp[20022]: VRRP_Instance(VI_1) Sending gratuitous ARPs on ens33 for 192.168.0.200Jul 02 10:18:54 node1 Keepalived_vrrp[20022]: VRRP_Instance(VI_2) Transition to MASTER STATEJul 02 10:18:55 node1 Keepalived_vrrp[20022]: VRRP_Instance(VI_2) Entering MASTER STATEJul 02 10:18:55 node1 Keepalived_vrrp[20022]: VRRP_Instance(VI_2) setting protocol VIPs.Jul 02 10:18:55 node1 Keepalived_vrrp[20022]: VRRP_Instance(VI_2) Sending gratuitous ARPs on ens33 for 192.168.0.201Jul 02 10:18:55 node1 Keepalived_vrrp[20022]: Opening script file /etc/keepalived/notify2.shJul 02 10:18:55 node1 Keepalived_healthcheckers[20021]: Netlink reflector reports IP 192.168.0.201 addedJul 02 10:19:00 node1 Keepalived_vrrp[20022]: VRRP_Instance(VI_2) Sending gratuitous ARPs on ens33 for 192.168.0.201
查看邮件
[root@node1 keepalived]# 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 Jul 2 10:18 19/702 "node1 to be master:192.168.0.201 floating"& 1 Message 1:From root@node1.localdomain Sun Jul 2 10:18:55 2017Return-Path: <root@node1.localdomain>X-Original-To: root@localhostDelivered-To: root@localhost.localdomainDate: Sun, 02 Jul 2017 10:18:55 +0800To: root@localhost.localdomainSubject: node1 to be master:192.168.0.201 floatingUser-Agent: Heirloom mailx 12.5 7/5/10Content-Type: text/plain; charset=us-asciiFrom: root@node1.localdomain (root)Status: RO2017-07-02 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
[root@localhost ~]# systemctl stop httpd
调度器A上操作
查看邮件
[root@node1 keepalived]# 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 Jul 2 10:18 19/702 "node1 to be master:192.168.0.201 floating" 2 root Sun Jul 2 10:28 19/702 "node1 to be backup:192.168.0.201 floating">N 3 keepalived@localhost Sun Jul 2 10:28 17/642 "[node1] Realserver [192.168.0.3]:80 - DOWN" N 4 keepalived@localhost Sun Jul 2 10:28 17/642 "[node1] Realserver [192.168.0.3]:80 - DOWN"
客户端请求查看
[root@localhost ~]# curl http://192.168.0.200 #只能访问到RS2backend server2
调度器B上操作
[root@node2 keepalived]# 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 Jul 2 10:28 19/702 "node2 to be backup:192.168.0.200 floating" 2 root Sun Jul 2 10:28 19/702 "node2 to be master:192.168.0.201 floating">N 3 keepalived@localhost Sun Jul 2 10:28 17/642 "[node2] Realserver [192.168.0.3]:80 - DOWN" N 4 keepalived@localhost Sun Jul 2 10:28 17/642 "[node2] Realserver [192.168.0.3]: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
[root@node1 keepalived]# mailHeirloom Mail version 12.5 7/5/10. Type ? for help."/var/spool/mail/root": 6 messages 2 new 1 root Sun Jul 2 10:18 19/702 "node1 to be master:192.168.0.201 floating" 2 root Sun Jul 2 10:28 19/702 "node1 to be backup:192.168.0.201 floating" 3 keepalived@localhost Sun Jul 2 10:28 18/653 "[node1] Realserver [192.168.0.3]:80 - DOWN" 4 keepalived@localhost Sun Jul 2 10:28 18/653 "[node1] Realserver [192.168.0.3]:80 - DOWN">N 5 keepalived@localhost Sun Jul 2 10:36 17/642 "[node1] Realserver [192.168.0.4]:80 - DOWN" N 6 keepalived@localhost Sun Jul 2 10:36 17/642 "[node1] Realserver [192.168.0.4]:80 - DOWN"
查看keepalived状态
[root@node1 keepalived]# 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 -DJul 02 10:36:31 node1 Keepalived_healthcheckers[20021]: Removing alive servers from the pool for VS [192.168.0.200]:80Jul 02 10:36:31 node1 Keepalived_healthcheckers[20021]: Remote SMTP server [127.0.0.1]:25 connected.Jul 02 10:36:31 node1 Keepalived_healthcheckers[20021]: SMTP alert successfully sent.Jul 02 10:36:32 node1 Keepalived_healthcheckers[20021]: Error connecting server [192.168.0.4]:80.Jul 02 10:36:32 node1 Keepalived_healthcheckers[20021]: Removing service [192.168.0.4]:80 from VS [192.168.0.201]:80Jul 02 10:36:32 node1 Keepalived_healthcheckers[20021]: Lost quorum 1-0=1 > 0 for VS [192.168.0.201]:80Jul 02 10:36:32 node1 Keepalived_healthcheckers[20021]: Adding sorry server [127.0.0.1]:80 to VS [192.168.0.201]:80Jul 02 10:36:32 node1 Keepalived_healthcheckers[20021]: Removing alive servers from the pool for VS [192.168.0.201]:80Jul 02 10:36:32 node1 Keepalived_healthcheckers[20021]: Remote SMTP server [127.0.0.1]:25 connected.Jul 02 10:36:32 node1 Keepalived_healthcheckers[20021]: SMTP alert successfully sent.
客户端请求
[root@localhost ~]# curl http://192.168.0.201 #请求至sorry服务器的web页面sorry server[root@localhost ~]# curl http://192.168.0.200sorry server
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