lvs+keepalived集羣架構服務

lvs+keepalived

需要四臺虛擬機

LVS 主： 
   DIP:10.0.0.31
   VIP: 10.0.0.99

LVS 備
   DIP:10.0.0.32
   VIP: 10.0.0.99

WEB1:
   RIP:10.0.0.33
   VIP: 10.0.0.99

WEB2:
   RIP:10.0.0.34
   VIP: 10.0.0.99

LVS主
[root@ localhost ~]# yum -y install ipvsadm keepalived

編輯了keepalived配置文件

[root@ localhost ~]# vim /etc/keepalived/keepalived.conf
內容如下：
vrrp_instance VI_1 {
​    state MASTER       \\初始身份
​    interface eth0      \\VIP
​    virtual_router_id 51
​    priority 100
​    advert_int 1
​    authentication {
​        auth_type PASS
​        auth_pass 1111
​    }
​    virtual_ipaddress {
​        192.168.189.181
​    }
}

virtual_server 192.168.189.181 80 {
​    delay_loop 6
​    lb_algo rr
​    lb_kind DR
​    nat_mask 255.255.255.0
​    protocol TCP
​    real_server 192.168.189.163 80 {
​        weight 1
​        TCP_CHECK {
​            connect_port 80
​            connect_timeout 3
​            nb_get_retry 3
​            delay_before_retry 3
​        }
​    }

​    real_server 192.168.189.164 80 {
​        weight 1
​        TCP_CHECK {
​            connect_port 80
​            connect_timeout 3
​            nb_get_retry 3
​            delay_before_retry 3
​        }
​    }
}

修改完畢後直接保存退出啓動keepalived
[root@ localhost ~]# service keepalived restart

LVS備份主機

配置和主基本相同，只是初始狀態和優先級需要修改下
[root@ localhost ~]# scp [email protected]:/etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf

編輯完畢保存退出啓動keepalived即可
[root@ localhost ~]# service keepalived restart

查看LVS 主和LVS 備

查看VIP
[root@ localhost ~]# ip  a

查看虛擬服務器列表
[root@ localhost ~]# ipvsadm -Ln

WEB1和WEB2同操作

web服務器的配置和之前DR的配置相同

安裝httpd
[root@ localhost ~]# yum -y install httpd

# 創建測試頁面
[root@ localhost ~]# echo 111111 > /var/www/html/index.html
或
[root@ localhost ~]# vim /var/www/html/index.html

<h1>111111</h1>

啓動httpd
[root@ localhost ~]# service httpd restart

配置內容如下:**
[root@ localhost ~]# vim ifcfg-eth0:0
DEVICE=eth0:0
ONBOOT=yes
BOOTPROTO=static
IPADDR=10.0.0.99
NETMASK=255.255.255.252

添加路由規則
[root@ localhost ~]# echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
[root@ localhost ~]# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore 
[root@ localhost ~]# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce 
[root@ localhost ~]# echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce 
[root@ localhost ~]# route add 10.0.0.99 dev lo