LVS负载均衡的搭建纯文本-白红宇

LVS负载均衡的搭建纯文本

阅读量：6846 次

发布时间：2019-06-26

本文共 6614 字，大约阅读时间需要 22 分钟。

一，LVS的搭建 (Balancer用RHEL 6 搭建)

1.搭建网络环境（Balancer 01）

[root@localhost ~]# ifconfig eth0

eth0 Link encap:Ethernet HWaddr 00:0C:29:BD:E7:65

inet addr:172.16.10.11 Bcast:172.16.10.255 Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:febd:e765/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:77849 errors:0 dropped:0 overruns:0 frame:0

TX packets:510 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:56807279 (54.1 MiB) TX bytes:66326 (64.7 KiB)

Interrupt:18 Base address:0x2000

eth1 Link encap:Ethernet HWaddr 00:0C:29:BD:E7:6F

inet addr:192.168.10.11 Bcast:192.168.10.255 Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:febd:e76f/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:199 errors:0 dropped:0 overruns:0 frame:0

TX packets:72 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:30857 (30.1 KiB) TX bytes:10545 (10.2 KiB)

Interrupt:16 Base address:0x2080

2.安装ipvsadm管理器

[root@localhost ~]# cd /media/Packages/

[root@localhost Packages]# rpm -ivh ipvsadm-1.25-9.el6.i686.rpm

warning: ipvsadm-1.25-9.el6.i686.rpm: Header V3 RSA/SHA256 Signature, key ID fd431d51: NOKEY

Preparing... ########################################### [100%]

1:ipvsadm ########################################### [100%]

3.配置VIP 脚本，并给予执行权限，然后执行

[root@localhost ~]# vi /opt/vip.sh

#!/bin/bash

VIP=192.168.10.19

/sbin/ifconfig eth1:0 $VIP broadcast $VIP netmask 255.255.255.255 up

/sbin/route add -host $VIP dev eth1:0

[root@localhost ~]# chmod +x /opt/vip.sh

[root@localhost ~]# /opt/vip.sh

4.将该脚本加入开机启动项

[root@localhost ~]# echo "/opt/vip.sh" >> /etc/rc.local

[root@localhost ~]# ifconfig eth1:0

eth1:0 Link encap:Ethernet HWaddr 00:0C:29:BD:E7:6F

inet addr:192.168.10.19 Bcast:192.168.10.19 Mask:255.255.255.255

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

Interrupt:16 Base address:0x2080

5.使用ipvsadm命令工具设置DR模式负载均衡群集（www服务器IP为192.168.10.13-14）

[root@localhost ~]# ipvsadm -A -t 192.168.10.19:80 -s rr

[root@localhost ~]# ipvsadm -a -t 192.168.10.19:80 -r 192.168.10.13 -g

[root@localhost ~]# ipvsadm -a -t 192.168.10.19:80 -r 192.168.10.14 -g

保存ipvsadm设置到/etc/sysconfig/ipvsadm文件以后，下次启动可以直接执行“service ipvsadm start”命令，不再需要逐条输入命令。

[root@localhost ~]# ipvsadm-save > /etc/sysconfig/ipvsadm

[root@localhost ~]# ipvsadm -l

IP Virtual Server version 1.2.1 (size=4096)

Prot LocalAddress:Port Scheduler Flags

-> RemoteAddress:Port Forward Weight ActiveConn InActConn

TCP 192.168.10.19:http rr

-> 192.168.10.13:http Local 1 0 0

-> 192.168.10.14:http Route 1 0 0

WWW1的配置

1.配置网络环境

[root@localhost ~]# ifconfig eth0

eth0 Link encap:Ethernet HWaddr 00:0C:29:FE:39:09

inet addr:172.16.10.13 Bcast:172.16.10.255 Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:fefe:3909/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:23 errors:0 dropped:0 overruns:0 frame:0

TX packets:58 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:5569 (5.4 KiB) TX bytes:11304 (11.0 KiB)

Interrupt:59 Base address:0x2024

[root@localhost ~]# ifconfig eth1

eth1 Link encap:Ethernet HWaddr 00:0C:29:FE:39:13

inet addr:192.168.10.13 Bcast:192.168.10.255 Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:fefe:3913/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:77 errors:0 dropped:0 overruns:0 frame:0

TX packets:89 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:9046 (8.8 KiB) TX bytes:13582 (13.2 KiB)

Interrupt:67 Base address:0x20a4

2.在www1上的设置

[root@localhost ~]# vi /opt/lvs-dr //编写lvs-dr脚本

[root@localhost ~]# vi /opt/lvs-dr

#!/bin/bash

VIP=192.168.10.19

/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up

/sbin/route add -host $VIP dev lo:0

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

3.给予lvs-dr脚本以执行权限，并加入开机启动，然后执行该脚本

[root@localhost ~]# chmod u+x /opt/lvs-dr

[root@localhost ~]# echo "/opt/lvs-dr" >> /etc/rc.local

[root@localhost ~]# /opt/lvs-dr

4.安装apache网站服务

[root@localhost ~]# mount /dev/cdrom /media/

mount: block device /dev/cdrom is write-protected, mounting read-only

[root@localhost ~]# cd /media/Server/

[root@localhost Server]# rpm -ivh httpd-2.2.3-43.el5.i386.rpm

5.编写基本测试页，并开启httpd服务

[root@localhost Server]# echo "1111" > /var/www/html/index.html

[root@localhost Server]# service httpd restart

停止 httpd： [确定]

启动 httpd： [确定]

WWW2的配置

[root@localhost ~]# ifconfig eth0

eth0 Link encap:Ethernet HWaddr 00:0C:29:4E:07:88

inet addr:172.16.10.14 Bcast:172.16.10.255 Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:fe4e:788/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:18 errors:0 dropped:0 overruns:0 frame:0

TX packets:63 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:4068 (3.9 KiB) TX bytes:12063 (11.7 KiB)

Interrupt:59 Base address:0x2024

[root@localhost ~]# ifconfig eth1

eth1 Link encap:Ethernet HWaddr 00:0C:29:4E:07:92

inet addr:192.168.10.14 Bcast:192.168.10.255 Mask:255.255.255.0

inet6 addr: fe80::20c:29ff:fe4e:792/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:126 errors:0 dropped:0 overruns:0 frame:0

TX packets:87 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:13293 (12.9 KiB) TX bytes:12862 (12.5 KiB)

Interrupt:67 Base address:0x20a4

2.在www2上的设置：将WWW1的lvs-dr脚本传到www2上，并做修改

www1上的操作

[root@localhost Server]# scp /opt/lvs-dr

The authenticity of host '192.168.10.14 (192.168.10.14)' can't be established.

RSA key fingerprint is 6e:9d:7a:2d:98:87:46:f1:48:47:f4:04:62:b6:29:4b.

Are you sure you want to continue connecting (yes/no)? yes

Warning: Permanently added '192.168.10.14' (RSA) to the list of known hosts.

password:

lvs-dr

3.给予lvs-dr脚本以执行权限，并加入开机启动，然后执行该脚本

[root@localhost ~]# chmod u+x /opt/lvs-dr

[root@localhost ~]# echo "/opt/lvs-dr" >> /etc/rc.local

[root@localhost ~]# /opt/lvs-dr

4.安装Apache服务，并编写基本测试页，开启httpd服务

[root@localhost ~]# mount /dev/cdrom /media/

mount: block device /dev/cdrom is write-protected, mounting read-only

[root@localhost ~]# cd /media/Server/

[root@localhost Server]# rpm -ivh httpd-2.2.3-43.el5.i386.rpm

warning: httpd-2.2.3-43.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186

Preparing... ########################################### [100%]

1:httpd ########################################### [100%]

[root@localhost Server]# echo "2222" > /var/www/html/index.html

[root@localhost Server]# service httpd start

启动 httpd： [确定]

本文出自 “” 博客，请务必保留此出处

转载于:https://blog.51cto.com/beijingdba/1417852

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