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[p=168, null, left]两台服务器,一主一备,提供一个虚拟IPSERVER vmvare01:192.168.10.191(主服务器 MASTER)
SERVER vmvare02:192.168.10.192(从服务器 BACKUP)
virtual IP:192.168.10.195
安装nginx请参照本http://nmszh.blog./4609205/1530262
要求:主服务器宕机后,从服务器接管。
1.在vmvare01和vmvare02都操作如下:
[iyunv@vmvare01 keepalived-1.2.2]# ./configure &&make &&make install
[iyunv@vmvare01 keepalived-1.2.2]# cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/ (输入y,覆盖)
[iyunv@vmvare01 keepalived-1.2.2]# cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
(输入y,覆盖)
[iyunv@vmvare01 keepalived-1.2.2]# mkdir /etc/keepalived (如果有不用创建)
[iyunv@vmvare01 keepalived-1.2.2]# cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/ (输入y,覆盖)
[iyunv@vmvare01 keepalived-1.2.2]# cp /usr/local/sbin/keepalived /usr/sbin/
2.在vmvare01上配置为主服务器:
[iyunv@vmvare01 keepalived-1.2.2]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL 注:router_id可默认,与从服务保持一致
}
vrrp_instance VI_1 {
state MASTER 注:默认MASTER
interface eth0
virtual_router_id 51 注:默认,保持主备一致
priority 100 注:默认100,数字越大,优先级越高
advert_int 1 注:默认,心跳广播时间1(秒)
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.10.195 注:自修改虚拟IP
}
}
3.在vmvare02上配置为从服务器:
[iyunv@vmvare02 ~]# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
acassen@firewall.loc
failover@firewall.loc
sysadmin@firewall.loc
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_DEVEL 注:router_id可默认,与主服务保持一致
}
vrrp_instance VI_1 {
state BACKUP 注:改成BACKUP
interface eth0
virtual_router_id 51 注:默认,保持主备一致
priority 90 注:90<100,比主服务优先级低
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.10.195 注:自修改虚拟IP
}
}
4.主服务器启动keepalived
[iyunv@vmvare01 keepalived-1.2.2]# service keepalived start
[iyunv@vmvare01 keepalived-1.2.2]# ps -ef | grep keepalived
root 12035 1 0 07:37 ? 00:00:00 keepalived -D
root 12036 12035 0 07:37 ? 00:00:00 keepalived -D
root 12038 12035 0 07:37 ? 00:00:00 keepalived -D
root 12043 651 0 07:43 pts/0 00:00:00 grep keepalived
注:默认1个主进程,两个辅进程,共3个进程
[iyunv@vmvare01 keepalived-1.2.2]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
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 qlen 1000
link/ether 00:0c:29:db:a2:04 brd ff:ff:ff:ff:ff:ff
inet 192.168.10.191/24 brd 192.168.10.255 scope global eth0
inet 192.168.10.195/32 scope global eth0
inet6 fe80::20c:29ff:fedb:a204/64 scope link
valid_lft forever preferred_lft forever
从服务器启动keepalived
[iyunv@vmvare02 keepalived-1.2.2]# service keepalived start
[iyunv@vmvare02 keepalived-1.2.2]# ps -ef | grep keepalived
root 4536 1 0 21:52 ? 00:00:00 keepalived -D
root 4538 4536 0 21:52 ? 00:00:00 keepalived -D
root 4539 4536 0 21:52 ? 00:00:00 keepalived -D
root 4555 2996 0 22:26 pts/0 00:00:00 grep keepalived
注:默认1个主进程,两个辅进程,共3个进程
[iyunv@vmvare02 ~]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
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 qlen 1000
link/ether 00:0c:29:83:3d:81 brd ff:ff:ff:ff:ff:ff
inet 192.168.10.192/24 brd 192.168.10.255 scope global eth0
inet6 fe80::20c:29ff:fe83:3d81/64 scope link
valid_lft forever preferred_lft forever
结论:主服务器vmvare01显示虚拟IP 192.168.10.195,从服务器vmvare02不显示 虚拟IP 192.168.10.195;当主服务器vmvare01宕机或进程宕了,从服务器会接管变成主服务器,会显示虚拟IP 192.168.10.195;当vmvare01进程起来后,会自动变成主服务器,vmvare02自动变为从服务器。
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