第二十九课预习任务

其他 2018-10-31 09:11:09 阅读次数: 0

1.DR模式搭建 

1.1 准备三台机器，并配置相关IP

1.2 配置相关脚本

1.3测试DR模式

2.Keepalived+LVS DR

2.1 准备三台机器，分别配置ip地址

2.2编辑keepalived.conf脚本

2.3 测试Keepalived+LVS DR

1.DR模式搭建 

1.1 准备三台机器，并配置相关IP

//调度器配置
[root@knightlai01 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:ec:fc:cf brd ff:ff:ff:ff:ff:ff
    inet 192.168.139.168/24 brd 192.168.139.255 scope global noprefixroute ens33
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:feec:fccf/64 scope link tentative dadfailed 
       valid_lft forever preferred_lft forever

//rs1 rs2
//rs1
[root@knightlai02 ~]# ip addr
2: ens36: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:b1:e4:36 brd ff:ff:ff:ff:ff:ff
    inet 192.168.139.125/24 brd 192.168.139.255 scope global noprefixroute ens36
       valid_lft forever preferred_lft forever


//rs2
[root@knightlai03 ~]# ip addr
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:72:4a:c2 brd ff:ff:ff:ff:ff:ff
    inet 192.168.139.170/24 brd 192.168.139.255 scope global noprefixroute ens33
       valid_lft forever preferred_lft forever

1.2 配置相关脚本

//调度器上配置脚本
[root@knightlai01 ~]vim /usr/local/sbin/lvs_dr.sh 

#! /bin/bash
echo 1 > /proc/sys/net/ipv4/ip_forward
ipv=/usr/sbin/ipvsadm
vip=192.168.220.200
rs1=192.168.220.125
rs2=192.168.220.170
#注意这里的网卡名字
ifconfig ens33:2 $vip broadcast $vip netmask 255.255.255.255 up
route add -host $vip dev ens33:2
$ipv -C
$ipv -A -t $vip:80 -s wrr
$ipv -a -t $vip:80 -r $rs1:80 -g -w 1
$ipv -a -t $vip:80 -r $rs2:80 -g -w 1

//rs1 rs2上配置脚本两个脚本是一样的
[root@knightlai02 ~]vim /usr/local/sbin/lvs_rs.sh

#/bin/bash
vip=192.168.139.200
#把vip绑定在lo上，是为了实现rs直接把结果返回给客户端
ifconfig lo:0 $vip broadcast $vip netmask 255.255.255.255 up
route add -host $vip lo:0
#以下操作为更改arp内核参数，目的是为了让rs顺利发送mac地址给客户端
#参考文档www.cnblogs.com/lgfeng/archive/2012/10/16/2726308.html
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

1.3测试DR模式

//调度器上执行脚本 
[root@knightlai01 conf]# sh /usr/local/sbin/lvs_dr.sh

//rs1 rs2执行脚本
[root@knightlai02 ~]# sh /usr/local/sbin/lvs_rs.sh
[root@knightlai03 ~]# sh /usr/local/sbin/lvs_rs.sh

[root@knightlai02 ~]# curl 192.168.139.125
This is a backup backup!

[root@knightlai03 ~]# curl 192.168.139.170
This is 192.168.139.170!

//测试lvs DR是否生效
[root@knightlai01 conf]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 conf]# curl 192.168.139.200
This is a backup backup!
[root@knightlai01 conf]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 conf]# curl 192.168.139.200
This is a backup backup!
[root@knightlai01 conf]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 conf]# curl 192.168.139.200
This is a backup backup!
[root@knightlai01 conf]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 conf]# curl 192.168.139.200
This is a backup backup!
[root@knightlai01 conf]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 conf]# curl 192.168.139.200
This is a backup backup!

2.Keepalived+LVS DR

2.1 准备三台机器，分别配置ip地址

1台需要安装keepalived 做为dir 另外2台作为realserver

 dir（安装keepalived）139.168
 rs1 139.125
 rs2 139.170
 vip 139.200ip 133.20

//配置dir上面的ip地址
[root@knightlai01 ~]# ip addr
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:ec:fc:cf brd ff:ff:ff:ff:ff:ff
    inet 192.168.139.168/24 brd 192.168.139.255 scope global noprefixroute ens33
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:feec:fccf/64 scope link tentative dadfailed 
       valid_lft forever preferred_lft forever

//rs1
[root@knightlai02 network-scripts]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet 192.168.139.200/32 brd 192.168.139.200 scope global lo:0
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens36: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:b1:e4:36 brd ff:ff:ff:ff:ff:ff
    inet 192.168.139.125/24 brd 192.168.139.255 scope global noprefixroute ens36
       valid_lft forever preferred_lft forever

//rs2
[root@knightlai03 ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet 192.168.139.200/32 brd 192.168.139.200 scope global lo:0
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:72:4a:c2 brd ff:ff:ff:ff:ff:ff
    inet 192.168.139.170/24 brd 192.168.139.255 scope global noprefixroute ens33
       valid_lft forever preferred_lft forever

2.2编辑keepalived.conf脚本

global_defs {
   notification_email {    # 配置邮箱报警
     [email protected]    # （如果要开启邮件报警，需要开启相应的sendmail服务）
   }
   notification_email_from [email protected]
   smtp_server 127.0.0.1    # 邮箱的服务器
   smtp_connect_timeout 30    # 邮箱连接设置
   router_id LVS_DEVEL    # 表示keepalived服务器的一个标识，是发邮件时显示在邮件主题中的信息
}

vrrp_instance VI_1 {    #定义一个vrrp组，组名唯一
    state MASTER        #定义改主机为keepalived的master主机
    interface eth0      #监控eth0号端口
    virtual_router_id 51   #虚拟路由id号为58，id号唯一，这个id决定了多播的MAC地址
    # （一组keepalived相同，多组不能相同）
    priority 150         #设置本节点的优先级，master的优先级 要比backup的优先级别高，数值要大
    # （一组中keepalived会检查此选项然后选举出一台服务器作为路由，配置vip）
    advert_int 1         #检查间隔，默认为1秒
    authentication {
        auth_type PASS    #认证方式，密码认证
        auth_pass 1111    #认证的密码，这个密码必须和backup上的一致
    }
    virtual_ipaddress {    #设置虚拟的ip， 这个ip是以后对外提供服务的ip。如果有多个VIP，继续换行填写.
        192.168.139.200
    }
}

virtual_server 192.168.139.200 80 {    #虚拟主机设置，ip同上。
    delay_loop 2                  #每隔2秒查询realserver状态
    lb_algo rr                    #lvs的调度算法
    lb_kind DR                    #lvs的集群模式
    nat_mask 255.255.255.0
    # persistence_timeout 50        #同一IP的连接50秒内被分配到同一台realserver
    # 测试的时候可以不用开
    protocol TCP                  #用TCP协议检查realserver状态

    real_server 192.168.139.125 80 {    #后端真实主机1
        weight 100                #每台机器的权重，0表示不给该机器转发请求，直到它恢复正常。
        TCP_CHECK {                #健康检查项目，以下
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port  80
        }
    }

    real_server 192.168.139.170 80 {        #后端真实主机2
        weight 100                    #每台机器的权重，0表示不给该机器转发请求，直到它恢复正常。
        TCP_CHECK {                    #健康检查项目，以下
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
            connect_port  80
        }
    }
}

另外2台realserver还是按DR模式配置脚本并执行

#/bin/bash
vip=192.168.139.200
#把vip绑定在lo上，是为了实现rs直接把结果返回给客户端
ifconfig lo:0 $vip broadcast $vip netmask 255.255.255.255 up
route add -host $vip lo:0
#以下操作为更改arp内核参数，目的是为了让rs顺利发送mac地址给客户端
#参考文档www.cnblogs.com/lgfeng/archive/2012/10/16/2726308.html
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

//两台rs上面都要执行
[root@knightlai03 ~]sh /usr/local/sbin/lvs_rs.sh

2.3 测试Keepalived+LVS DR

[root@knightlai01 ~]#ipvsadm -C 
[root@knightlai01 ~]#systemctl restart network


[root@knightlai01 ~]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 ~]# curl 192.168.139.200
This is a backup backup!
[root@knightlai01 ~]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 ~]# curl 192.168.139.200
This is a backup backup!
[root@knightlai01 ~]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 ~]# curl 192.168.139.200
This is a backup backup!
[root@knightlai01 ~]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 ~]# curl 192.168.139.200
This is a backup backup!

//模拟一台宕机测试（将rs1直接挂起，现在访问就全部在rs2上面）
[root@knightlai01 ~]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 ~]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 ~]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 ~]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 ~]# curl 192.168.139.200
This is 192.168.220.170!
[root@knightlai01 ~]# ping 192.168.139.125
PING 192.168.139.125 (192.168.139.125) 56(84) bytes of data.
From 192.168.139.168 icmp_seq=1 Destination Host Unreachable
From 192.168.139.168 icmp_seq=2 Destination Host Unreachable

注：如果发现rs没有轮询，注释掉keepalived.conf中persistence_timeout 50即可

猜你喜欢

转载自blog.csdn.net/a1779078902/article/details/83069892
今日推荐
TIOBE 5 月榜单：Fortran “复活”进入 Top 10
GCC 14.1 发布
面壁智能发布 Eurux-8x22B 开源大模型 —— 堪称「理科状元」
开源日报 | 谷歌扶持鸿蒙上位；开源Rabbit R1；Docker加持的安卓手机；微软的焦虑和野心；海尔电器把开放平台关了
中国码农的“35岁魔咒”
蘭雅 CorelDRAW 插件 2024.5.1 国际劳动节版，免费下载
Arc Browser for Windows 1.0 正式 GA
90后程序员开发视频搬运软件、不到一年获利超 700 万，结局很刑！
周排行
基本数据类型封装类比较 Java源码解读(一) 8种基本类型对应的封装类型
JS实现无缝滚动上
深入解析HashMap原理（基于JDK1.8）
mysql的连接池
关于.htc
linux下的ubuntu12.04图形界面
【数论】好推不好记的扩展欧几里德
设备树详解
cscope + tags 简单设置
xml学习
每日归档
更多
2024-05-09(35)
2024-05-08(42)
2024-05-07(14)
2024-05-06(40)
2024-05-05(0)
2024-05-04(7)
2024-05-03(19)
2024-05-02(0)
2024-05-01(4)
2024-04-30(1)

代码天地 © 2018 codetd.com

境外服务器   最新电视剧2022