架构师的成长之路初片~LVS+keepalived---- and-----haproxy

(Centos7)

环境：
LVS1: 192.168.4.5

LVS2: 192.168.4.6

web1 192.168.4.100
192.168.4.15(虚拟IP)

web2 192.168.4.200
192.168.4.15(虚拟IP)

client: 192.168.4.10

LVS端：
1:装包：ipvsadm、keepalived
2:修改配置文件//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 LVS1
   vrrp_iptables
   vrrp_skip_check_adv_addr
   vrrp_strict
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}

vrrp_instance VI_1 {
    state MASTER
    interface eth1
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
    	192.168.4.15/24
    }
}

virtual_server 192.168.4.15 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
#   persistence_timeout 50
    protocol TCP

    real_server 192.168.4.100 80 {
        weight 1
	TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
    real_server 192.168.4.200 80 {
        weight 1 
	TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }   
    }   

}

　　

3:启服务
systemctl restart keepalived

负载均衡可使用的方案：
1：软件：开源，免费
2：硬件：收费

Haproxy
Haproxy是代理服务器
不需要网关，不需要开启路由
可做七层与四层代理
：应用层：httpftpdnssmtp
：传输层：tcp/ip udp
四层代理：可做端口代理
七层代理：网站代理：nginxhttpdftp
性能：LVS>haproxy>Nginx
功能：Nginx>Haproxy>LVS

------------------------------------------------------------------------------------------------

环境：
Haproxy: 192.168.4.5
192.168.2.5

web1 192.168.2.100

web2 192.168.2.200

1）装包
haproxy
主配置文件：
/etc/haproxy/haproxy.cfg
关selinux、firewalld
2）修改主配置文件

 73 backend static
 74     balance     roundrobin
 75     server      static 127.0.0.1:4331 check
 76 
 77 #---------------------------------------------------------------------
 78 # round robin balancing between the various backends
 79 #---------------------------------------------------------------------
 80 backend app
 81     balance     roundrobin
 82     server  app1 127.0.0.1:5001 check
 83     server  app2 127.0.0.1:5002 check
 84     server  app3 127.0.0.1:5003 check
 85     server  app4 127.0.0.1:5004 check
 86 listen abc *:80
 87     server web1 192.168.2.100 check inter 2000 rise 2 fall 5
 88     server web2 192.168.2.200 check inter 2000 rise 2 fall 5
 89 listen stats *:1080
 90     stats refresh 30s
 91     stats uri /stats
 92     stats realm Haproxy Manager
 93     stats auth admin:admin