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基于redhat linux虚拟服务器的web负载均衡集群（piranha+LVS）

發布時間：2025/3/17 linux 24 豆豆

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基于redhat linux虛擬服務器的web負載均衡集群

硬件環境

分發機

LB1：192.168.0.129

LB2：192.168.0.130

真實節點主機

NODE1:192.168.0.131
NODE2:192.168.0.132

試驗在VMWARE下完成測試成功

初始化配置

在LB1上編輯hosts文件，并且設置 root ssh key 這樣有利于節點之間相互訪問

[root@localhost?ha]#?cat?/etc/hosts?

#?Do?not?remove?the?following?line,?or?various?programs?

#?that?require?network?functionality?will?fail.?

127.0.0.1??????????localhost.localdomain?localhost?

::1??????????????localhost6.localdomain6?localhost6?

192.168.0.129?lb1.test.com?lb1?

192.168.0.130?lb2.test.com?lb2?

192.168.0.131?node1.test.com?node1?

192.168.0.132?node2.test.com?node2?

[root@localhost?ha]#?ssh-keygen?

Generating?public/private?rsa?key?pair.?

Enter?file?in?which?to?save?the?key?(/root/.ssh/id_rsa):?

/root/.ssh/id_rsa?already?exists.?

Overwrite?(y/n)??

[root@localhost?ha]#?

將LB1的/root/.ssh和/etc/hosts復制到其他節點中

For?hostname?in?lb2?node1?node2?;?do?scp?–r?/root/.ssh?$hostname:/root?;done?

For?hostname?in?lb2?node1?node2?;?do?scp?/etc/hosts?$hostname:/etc/hosts?;done?

在LB1上安裝ipvasdm piranha httpd 軟件包

yum?install?-y?ipvsadm?piranha?httpd?

Loaded?plugins:?fastestmirror?

Loading?mirror?speeds?from?cached?hostfile?

Setting?up?Install?Process?

Package?ipvsadm-1.24-10.x86_64?already?installed?and?latest?version?

Package?piranha-0.8.4-16.el5.x86_64?already?installed?and?latest?version?

Package?httpd-2.2.3-43.el5.centos.x86_64?already?installed?and?latest?version?

Nothing?to?do?

再LB2上安裝ipvasdm piranha 包！

yum?install?-y?ipvsadm?piranha?

Loaded?plugins:?fastestmirror?

Loading?mirror?speeds?from?cached?hostfile?

Setting?up?Install?Process?

Package?ipvsadm-1.24-10.x86_64?already?installed?and?latest?version?

Package?piranha-0.8.4-16.el5.x86_64?already?installed?and?latest?version?

Nothing?to?do?

在node1 node2上安裝httpd arptables_jf

[root@localhost?~]#?yum?install?httpd?arptables_jf?

Loaded?plugins:?fastestmirror?

Loading?mirror?speeds?from?cached?hostfile?

Setting?up?Install?Process?

Package?httpd-2.2.3-43.el5.centos.x86_64?already?installed?and?latest?version?

Package?arptables_jf-0.0.8-8.x86_64?already?installed?and?latest?version?

Nothing?to?do?

[root@localhost ~]#

登陸 LB1 配置piranha登陸設置密碼

[root@localhost?ha]#?piranha-passwd?

New?Password:?

Verify:?

Updating?password?for?user?piranha?

啟動piranha-gui服務

[root@localhost?ha]#?/etc/init.d/piranha-gui?start?

Starting piranha-gui:????????????????????????????????????? [確定]

[root@localhost ha]#

瀏覽器中打開http://192.168.0.129:3636，輸入用戶名密碼登陸！

設置primary server public ip 192.168.0.129 點擊accept生效

選擇REDUNDANCY 然后點擊ENABLE，設置Redundant server public ip 為192.168.0.130，單擊accept

選擇VIRTUAL SERVERS 然后點擊ADD

編輯VIRTUAL SERVER編輯，如圖！

添加，編輯REAL SERVER 為兩個真實節點，編輯完后別忘了，保持，并且active?

選擇MONITORING SCRIPTS , 將sending Program設為/bin/testlinks %h ,將

Expect 設置 ok 。點擊ACCEPT保存。點擊VIRTUAL SERVERS回到上級菜單

點擊ACTIVETE激活！

最后回到CONTROL/MONITORING點擊update information now 更新

配置文件保存在/etc/sysconfig/ha/lvs.cf

[root@localhost?ha]#?cat?/etc/sysconfig/ha/lvs.cf?

serial_no?=?58?

primary?=?192.168.0.129?

service?=?lvs?

backup_active?=?1?

backup?=?192.168.0.130?

heartbeat?=?1?

heartbeat_port?=?539?

keepalive?=?6?

deadtime?=?18?

network?=?direct?

debug_level?=?NONE?

monitor_links?=?0?

syncdaemon?=?0?

virtual?apache?{?

?????active?=?1?

?????address?=?192.168.0.250?eth0:1?

?????vip_nmask?=?255.255.255.255?

?????port?=?80?

?????send?=?"GET?/?HTTP/1.0\r\n\r\n"?

?????expect?=?"ok"?

?????use_regex?=?0?

?????send_program?=?"/bin/testlinks?%h"?

?????load_monitor?=?none?

?????scheduler?=?wlc?

?????protocol?=?tcp?

?????timeout?=?6?

?????reentry?=?15?

?????quiesce_server?=?0?

?????server?node1?{?

?????????address?=?192.168.0.131?

?????????active?=?1?

?????????weight?=?1?

?????}?

?????server?node2?{?

?????????address?=?192.168.0.132?

?????????active?=?1?

?????????weight?=?1?

?????}?

[root@localhost?ha]#?

將這個文件cp到LB2上！

[root@localhost?ha]#?scp??/etc/sysconfig/ha/lvs.cf?lb2:/etc/sysconfig/ha/lvs.cf?

在LB1上編輯服務器測試程序/bin/testlink，并且加上執行權限！

???????????????????????????????????????????????????????????????????????????????

[root@localhost?ha]#?cat?/bin/testlink?

#!/bin/bash?

/usr/bin/links?-dump?1?$1?>/dev/null?2>&1?

if?[?0?-eq?$??]?;?then?

echo?ok?

else?

echo?fail?

fi?

[root@localhost?ha]#chmod?a+x?/bin/testlink??

然后講、bin/testlink文件復制一份到LB2上！

在node1上編輯arptables腳本，并且運行它

[root@localhost?~]#?cat?/arp_arptables.sh?

#!/bin/bash?

VIP=192.168.0.250?

RIP=192.168.0.131?

arptables?-F?

arptables?-A?IN?-d?$VIP?-j?DROP?

arptables?-A?OUT?-s?$VIP?-j?mangle?--mangle-ip-s?$RIP?

/sbin/ifconfig?eth0:1?$VIP?broadcast?$VIP?netmask?255.255.255.255?up?

/sbin/route?add?-host?$VIP?dev?eth0:1?

[root@localhost?~]#?

放入測試頁面，并且啟動httpd

[root@localhost?~]#?echo?"node1"?>?/var/www/html/index.html?

[root@localhost?~]#?service?httpd?start?

啟動 httpd：

在node2上編輯arptables腳本，并且運行它

[root@localhost?~]#?cat?/arp_arptables.sh?

#!/bin/bash?

VIP=192.168.0.250?

RIP=192.168.0.132?

arptables?-F?

arptables?-A?IN?-d?$VIP?-j?DROP?

arptables?-A?OUT?-s?$VIP?-j?mangle?--mangle-ip-s?$RIP?

/sbin/ifconfig?eth0:1?$VIP?broadcast?$VIP?netmask?255.255.255.255?up?

/sbin/route?add?-host?$VIP?dev?eth0:1?

[root@localhost?~]#?

放入測試頁面，并且啟動httpd

[root@localhost?~]#?echo?"node2"?>?/var/www/html/index.html?

[root@localhost?~]#?service?httpd?start?

啟動 httpd：

LB1 LB2上啟動PULSE服務，查看ipvsadm結果

/etc/init.d/pulse?start?

Ipvsadm??-L?–n?

如果前面的配置正確，這里可以在lb1上看到正確的回顯。

當我們將lib1的網線拔除后，分發服務將自動切換到lib2上。

當我們將node1的網線拔除后，分發器將把node1從分發列表中剔出。當我們將

node1的網線插回后，分發器又將把node1恢復到分發列表中去。

無論你如何測試，請使用額外的機器訪問VIP，這也有利于測試分發器是否正確的保持

了session。????????????????????????????????????????????????????????????

轉載于:https://blog.51cto.com/fghjk/772688

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