keepalived双主架构

一 环境规划

节点	IP	功能	VIP
node-01	192.168.174.120	keepalived master/slave	192.168.174.20
node-02	192.168.174.121	keepalived slave/master	192.168.174.21

二 设置node-01节点

2.1 查看node-01节点配置

root@node-01:~# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {

notification_email {

[e-mail]

}

notification_email_from [e-mail]

smtp_server 127.0.0.1

smtp_connect_timeout 30

router_id node-01

vrrp_skip_check_adv_addr

vrrp_strict

vrrp_garp_interval 0

vrrp_gna_interval 0

}

include /etc/keepalived/conf.d/*.conf

2.2 创建配置文件路径

root@node-01:~# mkdir -pv /etc/keepalived/conf.d
mkdir: created directory '/etc/keepalived/conf.d'

2.3 配置实例master.conf

root@node-01:~# cat /etc/keepalived/conf.d/master.conf 
vrrp_instance VI_1 {
    state MASTER
    interface ens33
    virtual_router_id 101
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.174.20
    }
    notify_master "/etc/keepalived/notify.sh master"
    notify_backup "/etc/keepalived/notify.sh backup"
    notify_fault "/etc/keepalived/notify.sh fault"
}

2.4 设置实例slave.conf

root@node-01:~# cat /etc/keepalived/conf.d/slave.conf 
vrrp_instance VI_2 {
    state BACKUP
    interface ens33
    virtual_router_id 102
    priority 80
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
    192.168.174.21
    }
    notify_master "/etc/keepalived/notify.sh master"
    notify_backup "/etc/keepalived/notify.sh backup"
    notify_fault "/etc/keepalived/notify.sh fault"
}

2.5 启动keepalived服务

root@node-01:~# systemctl start keepalived

21.6 查看node-01节点VIP

root@node-01:~# hostname -I
192.168.174.120 192.168.174.20 192.168.174.21 

三 设置node-02节点

3.1 查看node-01节点配置

root@node-02:~# cat /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {

notification_email {

[e-mail]

}

notification_email_from [e-mail]

smtp_server 127.0.0.1

smtp_connect_timeout 30

router_id node-01

vrrp_skip_check_adv_addr

vrrp_strict

vrrp_garp_interval 0

vrrp_gna_interval 0

}

include /etc/keepalived/conf.d/*.conf

3.2 创建配置文件路径

root@node-02:~# mkdir -pv /etc/keepalived/conf.d
mkdir: created directory '/etc/keepalived/conf.d'

3.3 配置实例master.conf

root@node-02:~# cat /etc/keepalived/conf.d/master.conf 
vrrp_instance VI_2 {
    state BACKUP
    interface ens33
    virtual_router_id 102
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 123456
    }
    virtual_ipaddress {
    192.168.174.21
    }
    notify_master "/etc/keepalived/notify.sh master"
    notify_backup "/etc/keepalived/notify.sh backup"
    notify_fault "/etc/keepalived/notify.sh fault"
}

3.4 设置实例slave.conf

root@node-02:~# cat /etc/keepalived/conf.d/slave.conf 
vrrp_instance VI_1 {
    state BACKUP
    interface ens33
    virtual_router_id 101
    priority 80
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.174.20
    }
    notify_master "/etc/keepalived/notify.sh master"
    notify_backup "/etc/keepalived/notify.sh backup"
    notify_fault "/etc/keepalived/notify.sh fault"
}

3.5 启动keepalived服务

root@node-02:~# systemctl start keepalived

3.6 查看node-02节点VIP

root@node-02:~# hostname -I
192.168.174.121 192.168.174.21

3.7 查看node-01节点VIP

root@node-01:~# hostname -I
192.168.174.120 192.168.174.20