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18.11 LVS DR模式搭建;18.12 keepalived lvs

發(fā)布時(shí)間:2020-05-11 15:14:56 來(lái)源:網(wǎng)絡(luò) 閱讀:515 作者:主內(nèi)安詳 欄目:移動(dòng)開(kāi)發(fā)

擴(kuò)展:

haproxy+keepalived  

http://blog.csdn.net/xrt95050/article/details/40926255

nginx、lvs、haproxy比較  

http://www.csdn.net/article/2014-07-24/2820837

keepalived中自定義腳本 vrrp_script   

http://my.oschina.net/hncscwc/blog/158746

lvs dr模式只使用一個(gè)公網(wǎng)ip的實(shí)現(xiàn)方法   

http://storysky.blog.51cto.com/628458/338726

18.11 LVS DR模式搭建

1. 改回hao2 hao3機(jī)器ens33網(wǎng)卡中網(wǎng)關(guān).2

[root@hao-02 ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33

[root@hao-03 ~]# vi /etc/sysconfig/network-scripts/ifcfg-ens33

2. 重啟網(wǎng)卡:

[root@hao-02 ~]# systemctl restart network

[root@hao-03 ~]# systemctl restart network

hao1 機(jī)器(dir)上操作:

1. hao1機(jī)器(dir)上,創(chuàng)建lvs_dr.sh腳本:

[root@hao-01 ~]# vim /usr/local/sbin/lvs_dr.sh

添加內(nèi)容:

#! /bin/bash

echo 1 > /proc/sys/net/ipv4/ip_forward

ipv=/usr/sbin/ipvsadm

vip=192.168.211.200

rs1=192.168.211.129

rs2=192.168.211.130

#注意這里的網(wǎng)卡名字(ens33 上面設(shè)置了vip虛擬網(wǎng)卡ip)

ifdown ens33

ifup ens33

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

2. 執(zhí)行lvs_dr.sh腳本:

[root@hao-01 ~]# sh /usr/local/sbin/lvs_dr.sh

18.11 LVS DR模式搭建;18.12 keepalived lvs

18.11 LVS DR模式搭建;18.12 keepalived lvs

hao2 機(jī)器(rr)上操作:

1. hao2機(jī)器(rr)上,創(chuàng)建lvs_rs.sh腳本:

[root@hao-02 ~]# vim /usr/local/sbin/lvs_rs.sh

添加內(nèi)容:

#/bin/bash

vip=192.168.211.200

#把vip綁定在lo上,是為了實(shí)現(xiàn)rs直接把結(jié)果返回給客戶端

ifdown lo

ifup lo

ifconfig lo:0 $vip broadcast $vip netmask 255.255.255.255 up

route add -host $vip lo:0

#以下操作為更改arp內(nèi)核參數(shù),目的是為了讓rs順利發(fā)送mac地址給客戶端

#參考文檔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

2. 執(zhí)行lvs_rs.sh腳本:

[root@hao-02 ~]# sh /usr/local/sbin/lvs_rs.sh

hao3 機(jī)器(rr)上操作:

1. hao3機(jī)器(rr)上,創(chuàng)建lvs_rs.sh腳本:

[root@hao-03 ~]# vim /usr/local/sbin/lvs_rs.sh

添加內(nèi)容:

#/bin/bash

vip=192.168.211.200

#把vip綁定在lo上,是為了實(shí)現(xiàn)rs直接把結(jié)果返回給客戶端

ifdown lo

ifup lo

ifconfig lo:0 $vip broadcast $vip netmask 255.255.255.255 up

route add -host $vip lo:0

#以下操作為更改arp內(nèi)核參數(shù),目的是為了讓rs順利發(fā)送mac地址給客戶端

#參考文檔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

2. 執(zhí)行lvs_rs.sh腳本:

[root@hao-03 ~]# sh /usr/local/sbin/lvs_rs.sh

測(cè)試:

游覽器訪問(wèn)vip192.168.211.200

18.12 keepalived lvs

hao1 機(jī)器(dir)上操作:

yum install -y keepalived

1. 編輯keepalived.conf配置文件

[root@hao-01 ~]# vim /etc/keepalived/keepalived.conf

添加內(nèi)容:

vrrp_instance VI_1 {

#備用服務(wù)器上為 BACKUP

state MASTER

#綁定vip的網(wǎng)卡為ens33,你的網(wǎng)卡和阿銘的可能不一樣,這里需要你改一下

interface ens33

virtual_router_id 51

#備用服務(wù)器上為90

priority 100

advert_int 1

authentication {

auth_type PASS

auth_pass haomima

}

virtual_ipaddress {

192.168.211.200

}

}

virtual_server 192.168.211.200 80 {

#(每隔10秒查詢r(jià)ealserver狀態(tài))

delay_loop 10

#(lvs 算法)

lb_algo wlc

#(DR模式)

lb_kind DR

#(同一IP的連接0秒內(nèi)被分配到同一臺(tái)realserver)

persistence_timeout 0

#(用TCP協(xié)議檢查realserver狀態(tài))

protocol TCP

real_server 192.168.211.129 80 {

#(權(quán)重)

weight 100

TCP_CHECK {

#(10秒無(wú)響應(yīng)超時(shí))

connect_timeout 10

nb_get_retry 3

delay_before_retry 3

connect_port 80

}

}

real_server 192.168.211.130 80 {

weight 100

TCP_CHECK {

connect_timeout 10

nb_get_retry 3

delay_before_retry 3

connect_port 80

}

}

}

2. 啟動(dòng)keepalived

[root@hao-01 ~]# systemctl start keepalived

3. hao1機(jī)器(dir)上,先關(guān)閉keepalived

[root@hao-01 ~]# systemctl stop keepalived

4. hao2機(jī)器(rr1)上,先關(guān)閉nginx,再啟動(dòng)nginx:

[root@hao-02 ~]# systemctl stop nginx

[root@hao-02 ~]# systemctl start nginx

5. hao3機(jī)器(rr2)上,先關(guān)閉nginx,再啟動(dòng)nginx:

先關(guān)閉nginx,再啟動(dòng)nginx:

[root@hao-03 ~]# systemctl stop nginx

[root@hao-03 ~]# systemctl start nginx

6. 啟動(dòng)keepalived

[root@hao-01 ~]# systemctl start keepalived

7. (哪個(gè)機(jī)器nginx掛了,對(duì)應(yīng)的ip就不會(huì)在這里顯示了)

[root@hao-01 ~]# ipvsadm -ln

18.11 LVS DR模式搭建;18.12 keepalived lvs

8. hao2 hao3機(jī)器nginx掛了,這兩個(gè)對(duì)應(yīng)的ip都不再顯示了:

18.11 LVS DR模式搭建;18.12 keepalived lvs

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