keepalived+lvs简单实现

一,部署实战环节

　　 01,服务架构图:

　　　　　　　服务器镜像为centos6.9

　 02,服务安装:

　　　　 10.0.0.10:　　　

 1 下载keeplived官方包-->
 2 
 3 　　　　http://www.keepalived.org/software/keepalived-2.0.12.tar.gz
 4 
 5 　　　安装基础应用环境
 6 
 7 　　　　yum -y install openssl-devel kernel-devel make gcc openssl-devel libnl* popt*
 8 
 9 　　　下载popt包主要用于lvs
10 
11 　　　http://mirror.centos.org/centos/6/os/x86_64/Packages/popt-static-1.13-7.el6.x86_64.rpm
12 
13 　　　
14 
15 　　　安装:LVS两台服务都需要执行
16 
17 　　　　设置软连接:
18 
19 　　　　　　ln -s /usr/src/kernels/2.6.32-754.10.1.el6.x86_64/ /usr/src/linux  ##可能有的kernels不一样,根据实际而定
20 
21 　　　　安装lvs
22 　　　　　　yum -y install ipvsadm
23 
24 　　　　安装keeplived
25 
26 　　　　　　tar zxvf keepalived-2.0.12.tar.gz -->解压
27 
28 　　　　　　cd keepalived-2.0.12
29                 
30                 ./configure --with-kernel-dir=/usr/src/kernels/2.6.32-754.10.1.el6.x86_64/
31                 
32                 make && make install

View Code

##上面的源码安装报错　configure: error: nftables header files missing,所以选择用yum安装

　　yum -y install keepalived ipvsadm

　　更改配置文件/etc/keepalived/keepalived.conf:--->配置文件大致意思,上一篇有讲解,这里不再重复

[root@lvs01 ~]# cat /etc/keepalived/keepalived.conf
 ! Configuration File for keepalived
global_defs {
    notification_email {
        test@admin.com
    }
    notification_email_from admin@test.com
    smtp_server 127.0.0.1
    smtp_connect_timeout 30
    router_id LVS_MASTER
}

vrrp_instance VI_1 {
    state MASTER
    interface eth1
    virtual_router_id 60
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        10.0.0.9
    }
}

virtual_server 10.0.0.9 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    nat_mask 255.255.255.0
    persistence_timeout 50
    protocol TCP

    real_server 10.0.0.12 80 {
        weight 1
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }

    real_server 10.0.0.13 80 {
        weight 1
        TCP_CHECK {
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}

　　　　启动keeplived:

　　　　/etc/init.d/keepalived start 　

　　　　ps -ef|grep keepalived 可以查看到进程相关

　　　　IP a 命令可以查看到IP

　　10.0.0.11服务器:

　　　　　　yum -y install keepalived ipvsadm

　　　　　　更改配置文件/etc/keepalived/keepalived.conf:--->配置文件大致意思,上一篇有讲解,这里不再重复

 1 [root@lvs02 ~]# cat /etc/keepalived/keepalived.conf
 2  ! Configuration File for keepalived
 3 global_defs {
 4     notification_email {
 5         test@sina.com
 6     }
 7     notification_email_from admin@test.com
 8     smtp_server 127.0.0.1
 9     smtp_connect_timeout 30
10     router_id LVS_BACKUP
11 }
12 
13 vrrp_instance VI_1 {
14     state MASTER
15     interface eth1
16     virtual_router_id 60
17     priority 60
18     advert_int 1
19     authentication {
20         auth_type PASS
21         auth_pass 1111
22     }
23     virtual_ipaddress {
24         10.0.0.9
25     }
26 }
27 
28 virtual_server 10.0.0.9 80 {
29     delay_loop 6
30     lb_algo rr
31     lb_kind DR
32     nat_mask 255.255.255.0
33     persistence_timeout 50
34     protocol TCP
35 
36     real_server 10.0.0.12 80 {
37         weight 1
38         TCP_CHECK {
39             connect_timeout 3
40             nb_get_retry 3
41             delay_before_retry 3
42         }
43     }
44 
45     real_server 10.0.0.13 80 {
46         weight 1
47         TCP_CHECK {
48             connect_timeout 3
49             nb_get_retry 3
50             delay_before_retry 3
51         }
52     }
53 }

　　　　启动从库

　　　　/etc/init.d/keepalived start

　　　10.0.0.12 , 10.0.0.13web:

　　　　下载nginx web包

　　　　　wget http://nginx.org/packages/rhel/6/x86_64/RPMS/nginx-1.14.0-1.el6.ngx.x86_64.rpm

　　　　　yum install nginx-1.14.0-1.el6.ngx.x86_64.rpm -y

　　　　　就能完成安装

　　　　更改配置:

　　　　　vim /usr/share/nginx/html/index.html

　　　　　10.0.0.12的服务器添加随机字符或者:

　　　　　 echo "web01" >/usr/share/nginx/html/index.html

　　　　　 10.0.0.13:

　　　　　　 echo "web01" >/usr/share/nginx/html/index.html

　　　　　10.0.0.12 10.0.0.13配置脚本并运行脚本(配置虚拟IP的)

 1 [root@ng01 ~]# cat ser.sh
 2 #!/bin/bash
 3 SNS_VIP=10.0.0.9
 4 . /etc/rc.d/init.d/functions
 5 case "$1" in
 6 start)
 7 ifconfig lo:0 $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP
 8 /sbin/route add -host $SNS_VIP dev lo:0
 9 echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
10 echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
11 echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
12 echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
13 sysctl -p >/dev/null 2>&1
14 echo "RealServer Start OK"
15 ;;
16 top)
17 ifconfig lo:0 down
18 route del $SNS_VIP >/dev/null 2>&1
19 echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
20 echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
21 echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
22 echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
23 echo "RealServer Stoped"
24 ;;
25 *)
26 echo "Usage: $0 {start|stop}"
27 exit 1
28 esac
29 exit 0