keepalived双主模式实现双机热备

╰半夏微凉° 2022-05-26 02:39 314阅读 0赞

**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

\[root@testkeepalived\]\#

\[root@testkeepalived\]\# 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:<LOOPBACK,UP,LOWER\_UP> mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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: <LOOPBACK,UP,LOWER\_UP>mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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:<LOOPBACK,UP,LOWER\_UP> mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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:<LOOPBACK,UP,LOWER\_UP> mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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 18:46:28 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:<LOOPBACK,UP,LOWER\_UP> mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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:<LOOPBACK,UP,LOWER\_UP> mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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:<LOOPBACK,UP,LOWER\_UP> mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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:<LOOPBACK,UP,LOWER\_UP> mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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 21:12:02 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:<LOOPBACK,UP,LOWER\_UP> mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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:<LOOPBACK,UP,LOWER\_UP> mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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:<LOOPBACK,UP,LOWER\_UP> mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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:<LOOPBACK,UP,LOWER\_UP> mtu 16436 qdisc noqueue state UNKNOWN

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:<BROADCAST,MULTICAST,UP,LOWER\_UP> mtu 1500 qdisc pfifo\_fast state UP qlen1000

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 21:18:42 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

keepalived双主模式实现双机热备

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