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:　　　

 下载keeplived官方包-->

 　　　　http://www.keepalived.org/software/keepalived-2.0.12.tar.gz

 　　　安装基础应用环境

 　　　　yum -y install openssl-devel kernel-devel make gcc openssl-devel libnl* popt*

 　　　下载popt包主要用于lvs

 　　　http://mirror.centos.org/centos/6/os/x86_64/Packages/popt-static-1.13-7.el6.x86_64.rpm

 　　　

 　　　安装:LVS两台服务都需要执行

 　　　　设置软连接:

 　　　　　　ln -s /usr/src/kernels/2.6.-754.10..el6.x86_64/ /usr/src/linux  ##可能有的kernels不一样,根据实际而定

 　　　　安装lvs

 　　　　　　yum -y install ipvsadm

 　　　　安装keeplived

 　　　　　　tar zxvf keepalived-2.0..tar.gz -->解压

 　　　　　　cd keepalived-2.0.

                 ./configure --with-kernel-dir=/usr/src/kernels/2.6.-754.10..el6.x86_64/

                 make && make install

##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

    router_id LVS_MASTER

}

vrrp_instance VI_1 {

    state MASTER

    interface eth1

    virtual_router_id

    priority

    advert_int

    authentication {

        auth_type PASS

        auth_pass

    }

    virtual_ipaddress {

        10.0.0.9

    }

}

virtual_server 10.0.0.9  {

    delay_loop

    lb_algo rr

    lb_kind DR

    nat_mask 255.255.255.0

    persistence_timeout

    protocol TCP

    real_server 10.0.0.12  {

        weight

        TCP_CHECK {

            connect_timeout

            nb_get_retry

            delay_before_retry

        }

    }

    real_server 10.0.0.13  {

        weight

        TCP_CHECK {

            connect_timeout

            nb_get_retry

            delay_before_retry

        }

    }

}

　　　　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

 [root@lvs02 ~]# cat /etc/keepalived/keepalived.conf

  ! Configuration File for keepalived

 global_defs {

     notification_email {

         test@sina.com

     }

     notification_email_from admin@test.com

     smtp_server 127.0.0.1

     smtp_connect_timeout

     router_id LVS_BACKUP

 }

 vrrp_instance VI_1 {

     state MASTER

     interface eth1

     virtual_router_id

     priority

     advert_int

     authentication {

         auth_type PASS

         auth_pass

     }

     virtual_ipaddress {

         10.0.0.9

     }

 }

 virtual_server 10.0.0.9  {

     delay_loop

     lb_algo rr

     lb_kind DR

     nat_mask 255.255.255.0

     persistence_timeout

     protocol TCP

     real_server 10.0.0.12  {

         weight

         TCP_CHECK {

             connect_timeout

             nb_get_retry

             delay_before_retry

         }

     }

     real_server 10.0.0.13  {

         weight

         TCP_CHECK {

             connect_timeout

             nb_get_retry

             delay_before_retry

         }

     }

 }

　　　　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)

 [root@ng01 ~]# cat ser.sh

 #!/bin/bash

 SNS_VIP=10.0.0.9

 . /etc/rc.d/init.d/functions

 case "$1" in

 start)

 ifconfig lo: $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP

 /sbin/route add -host $SNS_VIP dev lo:

 echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore

 echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce

 echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore

 echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce

 sysctl -p >/dev/null >&

 echo "RealServer Start OK"

 ;;

 top)

 ifconfig lo: down

 route del $SNS_VIP >/dev/null >&

 echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore

 echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce

 echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore

 echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce

 echo "RealServer Stoped"

 ;;

 *)

 echo "Usage: $0 {start|stop}"

 exit

 esac

 exit