Haproxy+Keepalived实现双机高可用

安装keepalived前需要安装的包

[root@dns2 /]# yum -y install ipvsadm

[root@dns2 /]# yum -y install kernel kernel-devel

[root@dns2 /]# reboot -n

 

[root@dns2 /]# uname -r

2.6.18-164.el5xen

 

[root@dns2 /]# uname -m

i686

 

 

[root@dns2 /]# ln -s /usr/src/kernels/2.6.18-164.el5xen-i686/   /usr/src/linux

安装keepalived

wget  http://www.keepalived.org/software/keepalived-1.1.19.tar.gz

# tar zxvf keepalived-1.1.19.tar.gz

# cd keepalived-1.1.19

# ./configure --prefix=/usr/local/keepalived --with-kernel-dir=/usr/src/kernels/2.6.18-164.el5xen-i686/

# make&&make install

# cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
# cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
# mkdir /etc/keepalived
# cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/
# cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

# vi /etc/keepalived/keepalived.conf

 

global_defs {

       notification_email {

              [email protected]

       }

       notification_email_from lb@proxy

       smtp_server localhost

       smtp_connect_timeout 30

       router_id haproxy_wf

}

vrrp_instance VI_9 {   #这里的VI_1最好重新命名，且跟备机一直，并确保同段网络内没有相同的命名

    state MASTER    #主为MASTER

    interface eth0

    virtual_router_id 59    #主备配置要一样，这个值是路由的配对，不能跟其他机器一样

    priority 100           #优先级，主配置必须比备机上值大

    advert_int 1

    authentication {

        auth_typePASS

        auth_pass haproxy_wf    #加密串，主和备上定义必须相同

    }

    virtual_ipaddress {

        10.13.23.83             #定义虚IP

    }

}

 

以下为备机配置,注意几个值不同：

global_defs {

       notification_email{

              [email protected]

       }

       notification_email_from lb@proxy

       smtp_server localhost

       smtp_connect_timeout 30

       router_id haproxy_wf

}

vrrp_instance VI_9 {

    state BACKUP

    interface eth0

    virtual_router_id 59

    priority 99

    advert_int 1

    authentication {

        auth_typePASS

        auth_pass haproxy_wf

    }

    virtual_ipaddress {

        10.13.23.83

    }

}

 

# service keepalived start

#tail �Cf /var/log/message   监听日志，查看状态，测试负载均衡及高可用性是否有效。

 

参考文献：

http://zhumeng8337797.blog.163.com/blog/static/100768914201191762253640/

http://rfyimcool.blog.51cto.com/1030776/680666

http://www.hz-seo.cn/?p=9