實驗lvs+dns+nfs+mysql+web

標籤：src   var   forward   rem   瀏覽器   https   server   images   緩衝   

伺服器IP地址規劃（10.x類比公網地址，192.x私網地址，172.x私網地址）

NFS：192.168.30.33WEB1:192.168.30.17WEB2:192.168.30.27LVS:192.168.30.7 VIP:10.0.0.100DNS:172.20.42.27Mysql:192.168.30.30Route:192.168.30.208, 10.0.0.200,172.20.42.200Client: Windows IP 172.20.42.222

各伺服器配置WEB1

1. 網路    ifcfg-eth0    DEVICE=eth0    IPADDR=192.168.30.17    PREFIX=24    GATEWAY=192.168.30.208    ifcfg-eth0:1    DEVICE=eth0:1    IPADDR=10.0.0.100    PREFIX=82. 安裝相應的包    yum install httpd php-fpm php-mysql -y3. 在RS上修改核心參數以限制arp通告及應答級    echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore    echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore    echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce    echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce

WEB2

參考WEB1，只是將IP更改為192.168.30.27

DNS

1. 安裝 yum install bind -y2. 配置 

vim /etc/named.rfc1912.zones
zone "blog.com" IN {
type master;
file "blog.com.zone";
};
vim /var/named/blog.com.zone
$TTL D
@ IN SOA master.blog.com admin.blog.com. (
0 ; serial
D ; refresh
H ; retry
W ; expire
H ) ; minimum
NS master
master A 172.20.42.27
www A 10.0.0.100

3. 啟動systemctl restart named

Route路由配置

1. 網路    ifcfg-eth0    DEVICE=eth0    BOOTPROTO=none    IPADDR=192.168.30.208    PREFIX=24    ifcfg-eth0:1    DEVICE=eth0:1    BOOTPROTO=none    IPADDR=10.0.0.200    PREFIX=8    ifcfg-eth1    DEVICE=eth1    BOOTPROTO=none    IPADDR=172.20.42.200    PREFIX=162. 啟用ip_forward    echo 1 > /prov/sys/net/ipv4/ip_forward    sysctl -a |grep ip_forward: net.ipv4.ip_forward = 1

LVS配置

1. 網路ifcfg-eth0DEVICE=eth0BOOTPROTO=noneIPADDR=192.168.30.7PREFIX=24GATEWAY=192.168.30.208ifcfg-eth0:1DEVICE=eth0:1BOOTPROTO=noneIPADDR=10.0.0.100PREFIX=82. 運行如下的指令碼（適當變更）   [[email protected] ~]#cat lvs_dr_vs.sh     #!/bin/bash    #Author:wangxiaochun    #Date:2017-08-13    vip=‘10.0.0.100‘    iface=‘eth0:1‘    mask=‘255.255.255.255‘    port=‘80‘    rs1=‘192.168.30.17‘    rs2=‘192.168.30.27‘    scheduler=‘wrr‘    type=‘-g‘    rpm -q ipvsadm &> /dev/null || yum -y install ipvsadm &> /dev/null    case $1 instart)    ifconfig $iface $vip netmask $mask #broadcast $vip up    iptables -F    ipvsadm -A -t ${vip}:${port} -s $scheduler    ipvsadm -a -t ${vip}:${port} -r ${rs1} $type -w 1    ipvsadm -a -t ${vip}:${port} -r ${rs2} $type -w 1    echo "The VS Server is Ready!"    ;;stop)    ipvsadm -C    ifconfig $iface down    echo "The VS Server is Canceled!"    ;;*)    echo "Usage: $(basename $0) start|stop"    exit 1    ;;esac    3. 查看ipvsadm -Ln    IP Virtual Server version 1.2.1 (size=4096)    Prot LocalAddress:Port Scheduler Flags      -> RemoteAddress:Port           Forward Weight ActiveConn InActConn    TCP  10.0.0.100:80 wrr      -> 192.168.30.17:80             Route   1      0          0               -> 192.168.30.27:80             Route   1      0          0             4. 更改lvs-dr的調度策略    ipvsadm -C    ipvsadm -A -t 10.0.0.100:80 -s rr    ipvsadm -a -t 10.0.0.100:80 -r 192.168.30.17    ipvsadm -a -t 10.0.0.100:80 -r 192.168.30.27    5. 測試新的策略    在Linux客戶機上，配置網路    DEVICE=eth2    BOOTPROTO=none    IPADDR=172.20.0.7![](https://images2018.cnblogs.com/blog/1386066/201807/1386066-20180703114658714-1685106874.png)    PREFIX=16    GATEWAY=172.20.42.200    DNS1=172.20.42.27    [[email protected] ~]# curl www.blog.com    web1    [[email protected] ~]# curl www.blog.com    web2    [[email protected] ~]# curl www.blog.com    web1    [[email protected] ~]# curl www.blog.com    web2    測試結論：達到了roundrobin輪詢的效果    6. 在windows PC上測試

在瀏覽器中訪問www.blog.com，可以看出，不是每次重新整理網站都會切換網站，是因為瀏覽器的緩衝導致。

實驗lvs+dns+nfs+mysql+web