keepalived双主模式实现双机热备
keepalived实现双主模式
以下称test节点：CentOS release6.3 (Final) 192.168.88.130 test.field.com
以下称www节点：CentOS release6.3 (Final) 192.168.88.131 www.field.com
配置实例：
1、test节点配置：
VI_1：作为主节点
VI_2：作为从节点
[root@testkeepalived]# vi keepalived.conf
! ConfigurationFile for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from kaadimin@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id test.field.com
vrrp_mcast_group4 224.18.0.200
}
vrrp_scriptchk_maintanance {
script "[[ -f /etc/keepalived/down]] && exit 1 || exit 0"
interval 1
#interval多长时间检查一次
#如果失败返回1权重-2
weight -2
}
vrrp_instanceVI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 4e78bb3a
}
virtual_ipaddress {
192.168.88.80/16 dev eth0 label eth0:0
}
track_script {
#track_script 调用脚本
chk_maintanance
}
}
vrrp_instanceVI_2 {
state BACKUP
interface eth0
virtual_router_id 61
"keepalived.conf"185L, 4211C written
[root@testkeepalived]#
[root@testkeepalived]#
[root@testkeepalived]# vi keepalived.conf
! ConfigurationFile for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from kaadimin@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id test.field.com
vrrp_mcast_group4 224.18.0.200
}
vrrp_scriptchk_maintanance {
script "[[ -f /etc/keepalived/down]] && exit 1 || exit 0"
interval 1
#interval多长时间检查一次
#如果失败返回1权重-2
weight -2
}
vrrp_instanceVI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 4e78bb3a
}
virtual_ipaddress {
192.168.88.80/16 dev eth0 label eth0:0
}
track_script {
#track_script 调用脚本
chk_maintanance
}
}
vrrp_instanceVI_2 {
state BACKUP
interface eth0
virtual_router_id 61
priority 99
advert_int 1
authentication {
auth_type PASS
auth_pass 8eR8bb5L
}
virtual_ipaddress {
192.168.88.90/16 dev eth0 label eth0:1
}
track_script {
#track_script 调用脚本
chk_maintanance
}
}
2、www节点配置：
VI_2：作为主节点
VI_1：作为从节点
[root@wwwkeepalived]# vi keepalived.conf
! ConfigurationFile for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from kaadimin@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id www.field.com
vrrp_mcast_group4 224.18.0.200
}
vrrp_scriptchk_maintanance {
script "[[ -f /etc/keepalived/down]] && exit 1 || exit 0 "
interval 1
#interval多长时间检查一次
#如果失败返回1权重-20
weight -2
}
vrrp_instanceVI_1 {
state BACKUP
interface eth1
virtual_router_id 51
priority 99
advert_int 1
authentication {
auth_type PASS
auth_pass 4e78bb3a
}
virtual_ipaddress {
192.168.88.80/16 dev eth1 label eth1:0
}
track_script {
#track_script 调用脚本
chk_maintanance
}
}
vrrp_instanceVI_2 {
state MASTER
interface eth1
virtual_router_id 61
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 8eR8bb5L
}
virtual_ipaddress {
192.168.88.90/16 dev eth1 label eth1:1
}
track_script {
#track_script 调用脚本
chk_maintanance
}
}
keepalived双主模式实现
案例1、keepalived配置单个vip实例
注释VIP实例VI_1，启用VIP实例VI_2
[root@wwwkeepalived]# vi keepalived.conf
使用以下命令注释VI_1
:.,33s/^/#/g
#vrrp_instanceVI_1 {
# state BACKUP
# interface eth1
# virtual_router_id 51
# priority 99
# advert_int 1
# authentication {
# auth_type PASS
# auth_pass 4e78bb3a
# }
# virtual_ipaddress {
# 192.168.88.80/16 dev eth1 label eth1:0
# }
[root@test keepalived]#!1057
servicekeepalived restart;ssh www 'service keepalived restart'
停止 keepalived：[确定]
正在启动 keepalived：[确定]
停止 keepalived：[确定]
正在启动 keepalived：[确定]
[root@testkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0:
link/ether 00:0c:29:4c:04:cc brdff:ff:ff:ff:ff:ff
inet 192.168.88.130/24 brd 192.168.88.255scope global eth0
inet6 fe80::20c:29ff:fe4c:4cc/64 scope link
valid_lft forever preferred_lft forever
[root@testsysconfig]# tail -f /var/log/keepalived.log
Apr 22 18:38:11test Keepalived[24106]: Stopping Keepalived v1.2.13 (03/19,2015)
Apr 22 18:38:11test Keepalived_vrrp[24108]: VRRP_Instance(VI_1) sending 0 priority
Apr 22 18:38:11test Keepalived_vrrp[24108]: VRRP_Instance(VI_1) removing protocol VIPs.
Apr 22 18:38:11test Keepalived_healthcheckers[24107]: Netlink reflector reports IP192.168.88.80 removed
Apr 22 18:38:11test Keepalived[27440]: Starting Keepalived v1.2.13 (03/19,2015)
Apr 22 18:38:11test Keepalived[27441]: Starting Healthcheck child process, pid=27442
Apr 22 18:38:11test Keepalived_healthcheckers[27442]: Initializing ipvs 2.6
Apr 22 18:38:11test Keepalived[27441]: Starting VRRP child process, pid=27443
Apr 22 18:38:11test Keepalived_vrrp[27443]: Netlink reflector reports IP 192.168.88.130 added
Apr 22 18:38:11test Keepalived_vrrp[27443]: Netlink reflector reports IPfe80::20c:29ff:fe4c:4cc added
Apr 22 18:38:11test Keepalived_vrrp[27443]: Registering Kernel netlink reflector
Apr 22 18:38:11test Keepalived_vrrp[27443]: Registering Kernel netlink command channel
Apr 22 18:38:11test Keepalived_vrrp[27443]: Registering gratuitous ARP shared channel
Apr 22 18:38:11test Keepalived_healthcheckers[27442]: Netlink reflector reports IP192.168.88.130 added
Apr 22 18:38:11test Keepalived_healthcheckers[27442]: Netlink reflector reports IPfe80::20c:29ff:fe4c:4cc added
Apr 22 18:38:11test Keepalived_healthcheckers[27442]: Registering Kernel netlink reflector
Apr 22 18:38:11test Keepalived_healthcheckers[27442]: Registering Kernel netlink commandchannel
Apr 22 18:38:11test Keepalived_vrrp[27443]: Opening file '/etc/keepalived/keepalived.conf'.
Apr 22 18:38:11test Keepalived_vrrp[27443]: Configuration is using : 65173 Bytes
Apr 22 18:38:11test Keepalived_vrrp[27443]: Using LinkWatch kernel netlink reflector...
Apr 22 18:38:11test Keepalived_healthcheckers[27442]: Opening file'/etc/keepalived/keepalived.conf'.
Apr 22 18:38:11test Keepalived_healthcheckers[27442]: Configuration is using : 7481 Bytes
Apr 22 18:38:11test Keepalived_healthcheckers[27442]: Using LinkWatch kernel netlinkreflector...
Apr 22 18:38:11test Keepalived_vrrp[27443]: VRRP_Instance(VI_2) Entering BACKUP STATE
Apr 22 18:38:11test Keepalived_vrrp[27443]: VRRP sockpool: [ifindex(2), proto(112),unicast(0), fd(10,11)]
Apr 22 18:38:11test Keepalived_vrrp[27443]: VRRP_Script(chk_maintanance) succeeded
可以发现，VI_2实例主节点已启用VIP（192.168.88.90）
[root@wwwkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth1:
link/ether 00:0c:29:e3:90:19 brdff:ff:ff:ff:ff:ff
inet 192.168.88.131/24 brd 192.168.88.255scope global eth1
inet192.168.88.90/16 scope global eth1:1
inet6fe80::20c:29ff:fee3:9019/64 scope link
valid_lft forever preferred_lft forever
[root@wwwkeepalived]#
[root@www ~]#tail -f /var/log/keepalived.log
Apr 22 18:38:11www Keepalived[10522]: Stopping Keepalived v1.2.13 (03/19,2015)
Apr 22 18:38:11www Keepalived[13860]: Starting Keepalived v1.2.13 (03/19,2015)
Apr 22 18:38:11www Keepalived[13861]: Starting Healthcheck child process, pid=13862
Apr 22 18:38:11www Keepalived_healthcheckers[13862]: Initializing ipvs 2.6
Apr 22 18:38:11www Keepalived[13861]: Starting VRRP child process, pid=13864
Apr 22 18:38:11www Keepalived_vrrp[13864]: Netlink reflector reports IP 192.168.88.131 added
Apr 22 18:38:11www Keepalived_vrrp[13864]: Netlink reflector reports IPfe80::20c:29ff:fee3:9019 added
Apr 22 18:38:11www Keepalived_vrrp[13864]: Registering Kernel netlink reflector
Apr 22 18:38:11www Keepalived_vrrp[13864]: Registering Kernel netlink command channel
Apr 22 18:38:11www Keepalived_vrrp[13864]: Registering gratuitous ARP shared channel
Apr 22 18:38:11www Keepalived_healthcheckers[13862]: Netlink reflector reports IP192.168.88.131 added
Apr 22 18:38:11www Keepalived_healthcheckers[13862]: Netlink reflector reports IPfe80::20c:29ff:fee3:9019 added
Apr 22 18:38:11www Keepalived_healthcheckers[13862]: Registering Kernel netlink reflector
Apr 22 18:38:11www Keepalived_healthcheckers[13862]: Registering Kernel netlink commandchannel
Apr 22 18:38:11www Keepalived_healthcheckers[13862]: Opening file'/etc/keepalived/keepalived.conf'.
Apr 22 18:38:11www Keepalived_healthcheckers[13862]: Configuration is using : 7478 Bytes
Apr 22 18:38:11www Keepalived_vrrp[13864]: Opening file '/etc/keepalived/keepalived.conf'.
Apr 22 18:38:11www Keepalived_vrrp[13864]: Configuration is using : 65170 Bytes
Apr 22 18:38:11www Keepalived_vrrp[13864]: Using LinkWatch kernel netlink reflector...
Apr 22 18:38:11www Keepalived_healthcheckers[13862]: Using LinkWatch kernel netlinkreflector...
Apr 22 18:38:11www Keepalived_vrrp[13864]: VRRP sockpool: [ifindex(2), proto(112), unicast(0),fd(10,11)]
Apr 22 18:38:11www Keepalived_vrrp[13864]: VRRP_Script(chk_maintanance) succeeded
测试、新建down文件，可以发现VIP会流转到backup主机。
[root@wwwkeepalived]# touch down
[root@wwwkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth1:
link/ether 00:0c:29:e3:90:19 brdff:ff:ff:ff:ff:ff
inet 192.168.88.131/24 brd 192.168.88.255scope global eth1
inet6 fe80::20c:29ff:fee3:9019/64 scopelink
valid_lft forever preferred_lft forever
[root@www ~]#tail -f /var/log/keepalived.log
Apr 22 18:46:25 www Keepalived_vrrp[13864]:VRRP_Script(chk_maintanance) failed
Apr 22 18:46:27 www Keepalived_vrrp[13864]:VRRP_Instance(VI_2) Received higher prio advert
Apr 22 18:46:27 www Keepalived_vrrp[13864]:VRRP_Instance(VI_2) Entering BACKUP STATE
Apr 22 18:46:27 www Keepalived_vrrp[13864]:VRRP_Instance(VI_2) removing protocol VIPs.
Apr 22 18:46:27 www Keepalived_healthcheckers[13862]: Netlinkreflector reports IP 192.168.88.90 removed
观测主节点日志可以发现：IP 192.168.88.90 removed
[root@testkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0:
link/ether 00:0c:29:4c:04:cc brdff:ff:ff:ff:ff:ff
inet 192.168.88.130/24 brd 192.168.88.255scope global eth0
inet192.168.88.90/16 scope global eth0:1
inet6 fe80::20c:29ff:fe4c:4cc/64 scope link
valid_lft forever preferred_lft forever
[root@testkeepalived]#
[root@testsysconfig]# tail -f /var/log/keepalived.log
Apr 22 18:46:27 test Keepalived_vrrp[27443]:VRRP_Instance(VI_2) forcing a new MASTER election
Apr 22 18:46:27 test Keepalived_vrrp[27443]:VRRP_Instance(VI_2) forcing a new MASTER election
Apr 22 18:46:28 test Keepalived_vrrp[27443]:VRRP_Instance(VI_2) Transition to MASTER STATE
Apr 22 18:46:29 test Keepalived_vrrp[27443]:VRRP_Instance(VI_2) Entering MASTER STATE
Apr 22 18:46:29 test Keepalived_vrrp[27443]:VRRP_Instance(VI_2) setting protocol VIPs.
Apr 22 18:46:29 test Keepalived_healthcheckers[27442]:Netlink reflector reports IP 192.168.88.90 added
Apr 22 18:46:29 test Keepalived_vrrp[27443]:VRRP_Instance(VI_2) Sending gratuitous ARPs on eth0 for 192.168.88.90
Apr 22 18:46:34 test Keepalived_vrrp[27443]:VRRP_Instance(VI_2) Sending gratuitous ARPs on eth0 for 192.168.88.90
观察VI_2实例backup节点可以发现：Netlink reflector reports IP 192.168.88.90 added
案例2、keepalived配置两个vip实例，启用双主模式。
[root@testkeepalived]# vi keepalived.conf
使用以下命令取消注释VI_1
:.,35s/^#//g
vrrp_instanceVI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 4e78bb3a
}
virtual_ipaddress {
192.168.88.80/16 dev eth0 label eth0:0
}
[root@wwwkeepalived]# vi keepalived.conf
使用以下命令取消注释VI_1
:.,33s/^#//g
vrrp_instanceVI_1 {
state BACKUP
interface eth1
virtual_router_id 51
priority 99
advert_int 1
authentication {
auth_type PASS
auth_pass 4e78bb3a
}
virtual_ipaddress {
192.168.88.80/16 dev eth1 label eth1:0
}
重启keepalived
[root@testkeepalived]# service keepalived restart;ssh www 'service keepalived restart'
停止 keepalived：[确定]
正在启动 keepalived：[确定]
停止 keepalived：[确定]
正在启动 keepalived：[确定]
观察两台机IP可以发现，test机启用VIP：192.168.88.80；www机启用VIP：192.168.88.90
[root@testkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0:
link/ether 00:0c:29:4c:04:cc brdff:ff:ff:ff:ff:ff
inet 192.168.88.130/24 brd 192.168.88.255scope global eth0
inet192.168.88.80/16 scope global eth0:0
inet6 fe80::20c:29ff:fe4c:4cc/64 scope link
valid_lft forever preferred_lft forever
[root@test sysconfig]# tail -f/var/log/keepalived.log
Apr 22 21:11:10test Keepalived[48468]: Stopping Keepalived v1.2.13 (03/19,2015)
Apr 22 21:11:10test Keepalived_vrrp[48470]: VRRP_Instance(VI_1) sending 0 priority
Apr 22 21:11:10test Keepalived_vrrp[48470]: VRRP_Instance(VI_1) removing protocol VIPs.
Apr 22 21:11:10test Keepalived_vrrp[48470]: VRRP_Instance(VI_2) sending 0 priority
Apr 22 21:11:10test Keepalived_vrrp[48470]: VRRP_Instance(VI_2) removing protocol VIPs.
Apr 22 21:11:10test Keepalived_healthcheckers[48469]: Netlink reflector reports IP192.168.88.80 removed
Apr 22 21:11:10test Keepalived_healthcheckers[48469]: Netlink reflector reports IP192.168.88.90 removed
Apr 22 21:11:10test Keepalived[48750]: Starting Keepalived v1.2.13 (03/19,2015)
Apr 22 21:11:10test Keepalived[48751]: Starting Healthcheck child process, pid=48752
Apr 22 21:11:10test Keepalived_healthcheckers[48752]: Initializing ipvs 2.6
Apr 22 21:11:10test Keepalived[48751]: Starting VRRP child process, pid=48753
Apr 22 21:11:10test Keepalived_vrrp[48753]: Netlink reflector reports IP 192.168.88.130 added
Apr 22 21:11:10test Keepalived_vrrp[48753]: Netlink reflector reports IPfe80::20c:29ff:fe4c:4cc added
Apr 22 21:11:10test Keepalived_vrrp[48753]: Registering Kernel netlink reflector
Apr 22 21:11:10test Keepalived_vrrp[48753]: Registering Kernel netlink command channel
Apr 22 21:11:10test Keepalived_vrrp[48753]: Registering gratuitous ARP shared channel
Apr 22 21:11:10test Keepalived_healthcheckers[48752]: Netlink reflector reports IP192.168.88.130 added
Apr 22 21:11:10test Keepalived_healthcheckers[48752]: Netlink reflector reports IPfe80::20c:29ff:fe4c:4cc added
Apr 22 21:11:10test Keepalived_healthcheckers[48752]: Registering Kernel netlink reflector
Apr 22 21:11:10test Keepalived_healthcheckers[48752]: Registering Kernel netlink commandchannel
Apr 22 21:11:10test Keepalived_vrrp[48753]: Opening file '/etc/keepalived/keepalived.conf'.
Apr 22 21:11:10test Keepalived_healthcheckers[48752]: Opening file'/etc/keepalived/keepalived.conf'.
Apr 22 21:11:10test Keepalived_vrrp[48753]: Configuration is using : 70220 Bytes
Apr 22 21:11:10test Keepalived_vrrp[48753]: Using LinkWatch kernel netlink reflector...
Apr 22 21:11:10test Keepalived_healthcheckers[48752]: Configuration is using : 7715 Bytes
Apr 22 21:11:10test Keepalived_healthcheckers[48752]: Using LinkWatch kernel netlinkreflector...
Apr 22 21:11:10test Keepalived_vrrp[48753]: VRRP_Instance(VI_2) Entering BACKUP STATE
Apr 22 21:11:10test Keepalived_vrrp[48753]: VRRP sockpool: [ifindex(2), proto(112),unicast(0), fd(10,11)]
Apr 22 21:11:10test Keepalived_vrrp[48753]: VRRP_Script(chk_maintanance) succeeded
Apr 22 21:11:11test Keepalived_vrrp[48753]: VRRP_Instance(VI_1) Transition to MASTER STATE
Apr 22 21:11:11test Keepalived_vrrp[48753]: VRRP_Instance(VI_2) Transition to MASTER STATE
Apr 22 21:11:11test Keepalived_vrrp[48753]: VRRP_Instance(VI_2) Received higher prio advert
Apr 22 21:11:11test Keepalived_vrrp[48753]: VRRP_Instance(VI_2) Entering BACKUP STATE
Apr 22 21:11:12test Keepalived_vrrp[48753]: VRRP_Instance(VI_1) Entering MASTER STATE
Apr 22 21:11:12test Keepalived_vrrp[48753]: VRRP_Instance(VI_1) setting protocol VIPs.
Apr 22 21:11:12test Keepalived_healthcheckers[48752]: Netlink reflector reports IP192.168.88.80 added
Apr 22 21:11:12test Keepalived_vrrp[48753]: VRRP_Instance(VI_1) Sending gratuitous ARPs oneth0 for 192.168.88.80
Apr 22 21:11:17test Keepalived_vrrp[48753]: VRRP_Instance(VI_1) Sending gratuitous ARPs oneth0 for 192.168.88.80
www节点：
[root@wwwkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth1:
link/ether 00:0c:29:e3:90:19 brdff:ff:ff:ff:ff:ff
inet 192.168.88.131/24 brd 192.168.88.255scope global eth1
inet 192.168.88.90/16 scope global eth1:1
inet6 fe80::20c:29ff:fee3:9019/64 scopelink
valid_lft forever preferred_lft forever
[root@wwwkeepalived]#
[root@www ~]#tail -f /var/log/keepalived.log
Apr 22 21:11:11www Keepalived[34970]: Stopping Keepalived v1.2.13 (03/19,2015)
Apr 22 21:11:11www Keepalived_vrrp[34972]: VRRP_Instance(VI_1) sending 0 priority
Apr 22 21:11:11www Keepalived_vrrp[34972]: VRRP_Instance(VI_1) removing protocol VIPs.
Apr 22 21:11:11www Keepalived_vrrp[34972]: VRRP_Instance(VI_2) sending 0 priority
Apr 22 21:11:11www Keepalived_vrrp[34972]: VRRP_Instance(VI_2) removing protocol VIPs.
Apr 22 21:11:11www Keepalived[35261]: Starting Keepalived v1.2.13 (03/19,2015)
Apr 22 21:11:11www Keepalived[35262]: Starting Healthcheck child process, pid=35263
Apr 22 21:11:11www Keepalived[35262]: Starting VRRP child process, pid=35264
Apr 22 21:11:11www Keepalived_healthcheckers[35263]: Initializing ipvs 2.6
Apr 22 21:11:11www Keepalived_vrrp[35264]: Netlink reflector reports IP 192.168.88.131 added
Apr 22 21:11:11www Keepalived_vrrp[35264]: Netlink reflector reports IPfe80::20c:29ff:fee3:9019 added
Apr 22 21:11:11www Keepalived_vrrp[35264]: Registering Kernel netlink reflector
Apr 22 21:11:11www Keepalived_vrrp[35264]: Registering Kernel netlink command channel
Apr 22 21:11:11www Keepalived_vrrp[35264]: Registering gratuitous ARP shared channel
Apr 22 21:11:11www Keepalived_vrrp[35264]: Opening file '/etc/keepalived/keepalived.conf'.
Apr 22 21:11:11www Keepalived_vrrp[35264]: Configuration is using : 70215 Bytes
Apr 22 21:11:11www Keepalived_vrrp[35264]: Using LinkWatch kernel netlink reflector...
Apr 22 21:11:11www Keepalived_healthcheckers[35263]: Netlink reflector reports IP 192.168.88.131added
Apr 22 21:11:11www Keepalived_healthcheckers[35263]: Netlink reflector reports IPfe80::20c:29ff:fee3:9019 added
Apr 22 21:11:11www Keepalived_healthcheckers[35263]: Registering Kernel netlink reflector
Apr 22 21:11:11www Keepalived_vrrp[35264]: VRRP_Instance(VI_1) Entering BACKUP STATE
Apr 22 21:11:11www Keepalived_healthcheckers[35263]: Registering Kernel netlink commandchannel
Apr 22 21:11:11www Keepalived_vrrp[35264]: VRRP sockpool: [ifindex(2), proto(112), unicast(0),fd(10,11)]
Apr 22 21:11:11www Keepalived_healthcheckers[35263]: Opening file'/etc/keepalived/keepalived.conf'.
Apr 22 21:11:11www Keepalived_healthcheckers[35263]: Configuration is using : 7710 Bytes
Apr 22 21:11:11www Keepalived_healthcheckers[35263]: Using LinkWatch kernel netlinkreflector...
Apr 22 21:11:11www Keepalived_vrrp[35264]: VRRP_Script(chk_maintanance) succeeded
Apr 22 21:11:11www Keepalived_vrrp[35264]: VRRP_Instance(VI_2) Transition to MASTER STATE
Apr 22 21:11:11www Keepalived_vrrp[35264]: VRRP_Instance(VI_2) Received lower prio advert,forcing new election
Apr 22 21:11:12www Keepalived_vrrp[35264]: VRRP_Instance(VI_2) Entering MASTER STATE
Apr 22 21:11:12www Keepalived_vrrp[35264]: VRRP_Instance(VI_2) setting protocol VIPs.
Apr 22 21:11:12www Keepalived_healthcheckers[35263]: Netlink reflector reports IP192.168.88.90 added
Apr 22 21:11:12www Keepalived_vrrp[35264]: VRRP_Instance(VI_2) Sending gratuitous ARPs on eth1for 192.168.88.90
Apr 22 21:11:17www Keepalived_vrrp[35264]: VRRP_Instance(VI_2) Sending gratuitous ARPs on eth1for 192.168.88.90
测试1、test机新建down文件，观察VIP流转
Test机VIP：192.168.88.80会流转到www节点，此时www节点占有两个VIP
[root@testkeepalived]# touch down
[root@testkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0:
link/ether 00:0c:29:4c:04:cc brdff:ff:ff:ff:ff:ff
inet 192.168.88.130/24 brd 192.168.88.255scope global eth0
inet6 fe80::20c:29ff:fe4c:4cc/64 scope link
valid_lft forever preferred_lft forever
[root@testsysconfig]# tail -f /var/log/keepalived.log
Apr 22 21:11:59 test Keepalived_vrrp[48753]:VRRP_Script(chk_maintanance) failed
Apr 22 21:12:01 test Keepalived_vrrp[48753]:VRRP_Instance(VI_1) Received higher prio advert
Apr 22 21:12:01 test Keepalived_vrrp[48753]:VRRP_Instance(VI_1) Entering BACKUP STATE
Apr 22 21:12:01 test Keepalived_vrrp[48753]:VRRP_Instance(VI_1) removing protocol VIPs.
Apr 22 21:12:01 test Keepalived_healthcheckers[48752]: Netlinkreflector reports IP 192.168.88.80 removed
[root@wwwkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth1:
link/ether 00:0c:29:e3:90:19 brdff:ff:ff:ff:ff:ff
inet 192.168.88.131/24 brd 192.168.88.255 scopeglobal eth1
inet192.168.88.90/16 scope global eth1:1
inet 192.168.88.80/16scope global secondary eth1:0
inet6 fe80::20c:29ff:fee3:9019/64 scopelink
valid_lft forever preferred_lft forever
[root@www ~]#tail -f /var/log/keepalived.log
Apr 22 21:12:01 www Keepalived_vrrp[35264]:VRRP_Instance(VI_1) forcing a new MASTER election
Apr 22 21:12:01 www Keepalived_vrrp[35264]:VRRP_Instance(VI_1) forcing a new MASTER election
Apr 22 21:12:02 www Keepalived_vrrp[35264]: VRRP_Instance(VI_1)Transition to MASTER STATE
Apr 22 21:12:03 www Keepalived_vrrp[35264]:VRRP_Instance(VI_1) Entering MASTER STATE
Apr 22 21:12:03 www Keepalived_vrrp[35264]:VRRP_Instance(VI_1) setting protocol VIPs.
Apr 22 21:12:03 www Keepalived_vrrp[35264]:VRRP_Instance(VI_1) Sending gratuitous ARPs on eth1 for 192.168.88.80
Apr 22 21:12:03 www Keepalived_healthcheckers[35263]: Netlinkreflector reports IP 192.168.88.80 added
Apr 22 21:12:08 www Keepalived_vrrp[35264]:VRRP_Instance(VI_1) Sending gratuitous ARPs on eth1 for 192.168.88.80
测试2、删除down文件，观察VIP流转
[root@testkeepalived]# ll
总用量 12
-rw-r--r-- 1root root 0 4月 2221:11 down
-rw-r--r-- 1root root 4212 4月 22 21:10 keepalived.conf
-rw-r--r-- 1root root 3562 4月 22 16:23 keepalived.conf.backup
[root@testkeepalived]# rm -rf down
[root@testkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0:
link/ether 00:0c:29:4c:04:cc brdff:ff:ff:ff:ff:ff
inet 192.168.88.130/24 brd 192.168.88.255scope global eth0
inet192.168.88.80/16 scope global eth0:0
inet6 fe80::20c:29ff:fe4c:4cc/64 scope link
valid_lft forever preferred_lft forever
[root@test sysconfig]# tail -f /var/log/keepalived.log
Apr 22 21:16:45 test Keepalived_vrrp[48753]:VRRP_Script(chk_maintanance) succeeded
Apr 22 21:16:46 test Keepalived_vrrp[48753]:VRRP_Instance(VI_1) forcing a new MASTER election
Apr 22 21:16:46 test Keepalived_vrrp[48753]: VRRP_Instance(VI_1)forcing a new MASTER election
Apr 22 21:16:47 test Keepalived_vrrp[48753]:VRRP_Instance(VI_1) Transition to MASTER STATE
Apr 22 21:16:48 test Keepalived_vrrp[48753]:VRRP_Instance(VI_1) Entering MASTER STATE
Apr 22 21:16:48 test Keepalived_vrrp[48753]:VRRP_Instance(VI_1) setting protocol VIPs.
Apr 22 21:16:48 test Keepalived_vrrp[48753]:VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 192.168.88.80
Apr 22 21:16:48 test Keepalived_healthcheckers[48752]:Netlink reflector reports IP 192.168.88.80 added
Apr 22 21:16:53 test Keepalived_vrrp[48753]:VRRP_Instance(VI_1) Sending gratuitous ARPs on eth0 for 192.168.88.80
[root@wwwkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth1:
link/ether 00:0c:29:e3:90:19 brdff:ff:ff:ff:ff:ff
inet 192.168.88.131/24 brd 192.168.88.255scope global eth1
inet 192.168.88.90/16 scope global eth1:1
inet6 fe80::20c:29ff:fee3:9019/64 scopelink
valid_lft forever preferred_lft forever
[root@www ~]#tail -f /var/log/keepalived.log
Apr 22 21:16:46 www Keepalived_vrrp[35264]:VRRP_Instance(VI_1) Received higher prio advert
Apr 22 21:16:46 www Keepalived_vrrp[35264]:VRRP_Instance(VI_1) Entering BACKUP STATE
Apr 22 21:16:46 www Keepalived_vrrp[35264]:VRRP_Instance(VI_1) removing protocol VIPs.
Apr 22 21:16:46 www Keepalived_healthcheckers[35263]: Netlinkreflector reports IP 192.168.88.80 removed
测试3、www机新建down文件，观察VIP流转
VIP：192.168.88.80会流转到test节点，此时test节点占有两个VIP
[root@wwwkeepalived]# touch down
[root@wwwkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth1:
link/ether 00:0c:29:e3:90:19 brdff:ff:ff:ff:ff:ff
inet 192.168.88.131/24 brd 192.168.88.255scope global eth1
inet6 fe80::20c:29ff:fee3:9019/64 scopelink
valid_lft forever preferred_lft forever
[root@wwwkeepalived]#
[root@www ~]#tail -f /var/log/keepalived.log
Apr 22 21:18:39 www Keepalived_vrrp[35264]: VRRP_Script(chk_maintanance)failed
Apr 22 21:18:41 www Keepalived_vrrp[35264]:VRRP_Instance(VI_2) Received higher prio advert
Apr 22 21:18:41 www Keepalived_vrrp[35264]:VRRP_Instance(VI_2) Entering BACKUP STATE
Apr 22 21:18:41 www Keepalived_vrrp[35264]: VRRP_Instance(VI_2)removing protocol VIPs.
Apr 22 21:18:41 www Keepalived_healthcheckers[35263]: Netlinkreflector reports IP 192.168.88.90 removed
[root@testkeepalived]# ip addr list
1: lo:
link/loopback 00:00:00:00:00:00 brd00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0:
link/ether 00:0c:29:4c:04:cc brdff:ff:ff:ff:ff:ff
inet 192.168.88.130/24 brd 192.168.88.255scope global eth0
inet192.168.88.80/16 scope global eth0:0
inet192.168.88.90/16 scope global secondary eth0:1
inet6 fe80::20c:29ff:fe4c:4cc/64 scope link
valid_lft forever preferred_lft forever
[root@testkeepalived]#
[root@testsysconfig]# tail -f /var/log/keepalived.log
Apr 22 21:18:41 test Keepalived_vrrp[48753]:VRRP_Instance(VI_2) forcing a new MASTER election
Apr 22 21:18:41 test Keepalived_vrrp[48753]:VRRP_Instance(VI_2) forcing a new MASTER election
Apr 22 21:18:42 test Keepalived_vrrp[48753]:VRRP_Instance(VI_2) Transition to MASTER STATE
Apr 22 21:18:43 test Keepalived_vrrp[48753]:VRRP_Instance(VI_2) Entering MASTER STATE
Apr 22 21:18:43 test Keepalived_vrrp[48753]:VRRP_Instance(VI_2) setting protocol VIPs.
Apr 22 21:18:43 test Keepalived_healthcheckers[48752]:Netlink reflector reports IP 192.168.88.90 added
Apr 22 21:18:43 test Keepalived_vrrp[48753]: VRRP_Instance(VI_2)Sending gratuitous ARPs on eth0 for 192.168.88.90
Apr 22 21:18:48 test Keepalived_vrrp[48753]:VRRP_Instance(VI_2) Sending gratuitous ARPs on eth0 for 192.168.88.90