Linux系统环境的搭建——lvs负载均衡的配置

查看本机所知道的其他机器的地址

[root@node12 ~]# arp -a

? (192.168.92.1) at 00:50:56:c0:00:08 [ether] on eth0

[root@node12 ~]#

配置VIP

ifconfig etho:2 192.168.92.100/24

这种是临时配置，一旦系统重启就会失效

找三台配置网络：

[root@node13 ~]# echo 1 > /proc/sys/net/ipv4/conf/eth0/arp_ignore

[root@node13 ~]# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore

[root@node13 ~]# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce

[root@node13 ~]# echo 2 > /proc/sys/net/ipv4/conf/eth0/arp_announce

[root@node13 ~]# ifconfig lo:2 192.168.92.100 netmask 255.255.255.255

[root@node13 ~]#

下载httpd镜像

yum install httpd -y

分别去三台虚拟机上去修改地址：

[root@node14 ~]# cd /var/www/html/

[root@node14 html]# ll

total 0

[root@node14 html]# vi index.html

[root@node14 html]# service httpd start

Starting httpd: httpd: Could not reliably determine the server's fully qualifie

d domain name, using 192.168.92.14 for ServerName                                                           [  OK  ]

[root@node14 html]# cat index.html

from 192.168.92.14

[root@node14 html]#

安装负载均衡服务器：

[root@node11 ~]# yum install ipvsadm -y

[root@node11 ~]# ipvsadm -A -t 192.168.92.100:80 -s rr

[root@node11 ~]# ipvsadm -ln

IP Virtual Server version 1.2.1 (size=4096)

Prot LocalAddress:Port Scheduler Flags

  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn

TCP  192.168.92.100:80 rr

[root@node11 ~]#

创建链接：

[root@node11 ~]# ipvsadm -a -t 192.168.92.100:80 -r 192.168.92.13:80 -g

[root@node11 ~]# ipvsadm -ln

IP Virtual Server version 1.2.1 (size=4096)

Prot LocalAddress:Port Scheduler Flags

  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn

TCP  192.168.92.100:80 rr

  -> 192.168.92.13:80             Route   1      0          0         

[root@node11 ~]# ipvsadm -a -t 192.168.92.100:80 -r 192.168.92.14:80 -g

[root@node11 ~]# ipvsadm -ln

IP Virtual Server version 1.2.1 (size=4096)

Prot LocalAddress:Port Scheduler Flags

  -> RemoteAddress:Port           Forward Weight ActiveConn InActConn

TCP  192.168.92.100:80 rr

  -> 192.168.92.13:80             Route   1      0          0         

  -> 192.168.92.14:80             Route   1      0          0         

[root@node11 ~]#

这就设置完了负载均衡

[root@node11 ~]# ipvsadm -lnc

可以将其中一个down掉：

[root@node14 ~]# ifconfig lo:2 down

拷贝与重命名的区别：

[root@node11 keepalived]# cp keepalived.conf keepalived.conf.bak

[root@node11 keepalived]# mv keepalived.conf.bak keepalived.conf.bak

mv: `keepalived.conf.bak' and `keepalived.conf.bak' are the same file

[root@node11 keepalived]#

在编辑的时候，删除3行使用3dd进行删除

在Linux系统中设置开机启动：

[root@node11 keepalived]# chkconfig keepalived on

在Linux系统中复制与黏贴

复制使用y

黏贴使用p

当要复制某一部分的时候，将光标移动到要复制部分的第一行位置，然后按下:.,$-1y

黏贴的时候，将光标移动到最后边，按下p

添加：

ifconfig lo:8 192.168.92.100 netmask 255.255.255.255

将keepalivede文件进行复制分发：

[root@node11 keepalived]# scp ./keepalived.conf [email protected]:'pwd'

The authenticity of host '192.168.92.15 (192.168.92.15)' can't be established.

RSA key fingerprint is 6f:ee:0e:76:34:f5:dc:e2:96:27:f1:cd:b4:d5:9f:36.

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

Warning: Permanently added '192.168.92.15' (RSA) to the list of known hosts.

[email protected]'s password:

keepalived.conf                              100% 1257     1.2KB/s   00:00    

[root@node11 keepalived]# ll

total 4

-rw-r--r-- 1 root root 1257 Dec 16 10:25 keepalived.conf

[root@node11 keepalived]#

之前是使用yum下载keepalived，下载进行安装

Yum iinstall keepalived -y

然后cd进入/etc/keepalived，之后进行配置：

将keepalived.conf文件进行备份，然后进入修改：使得能够和其他的两台进行安装

修改完成之后进行启动：

service keepalived start

然后将该文件复制分发：

[root@node11 keepalived]# scp ./keepalived.conf [email protected]:/etc/keepalived

然后进入15节点去配置：

将master改为backup

然后将权重值由100改为50

priority 50

[root@node15 keepalived]# ifconfig去查看的时候，不会显示ip地址，因为11上边是master并且还处于活跃状态

[root@node15 keepalived]# ipvsadm -ln

去检查内存模块是正常的状态

将ipvsadm挂掉的命令：

[root@node13 ~]# ifconfig lo:2 down

去检查

[root@node11 keepalived]# curl 192.168.92.13:80

from 192.168.92.13

[root@node11 keepalived]#

配置：

[root@node13 ~]# ifconfig lo:8 192.168.92.100 netmask 255.255.255.255

停止服务：

Service httpd stop

将网卡down掉：

[root@node11 keepalived]# ifconfig eth0 down

启动网卡：

Ifconfig eth0 up（需要去workstation上进行设置）

检查进程：

ps -fe | grep keepalived

杀死进程：

[root@node11 ~]# kill -9 1184

————————————————————————————————————

正确的杀死方式是：

因为lvs和nginx之间有冲突，版本不兼容，所以需要将搭建的lvs进程停止

[root@node11 ~]# service keepalived stop

启动的话是使用：

[root@node11 ~]# service keepalived start

想要查看状态：

[root@node11 ~]# ifconfig

这样也可以进行查看验证：

[root@node11 ~]# ipvsadm -ln

以上是将主机的杀死了，还有备机上边的，也需要去进行杀死，方法与主机上边的相同。