條件:五台虛拟機:
![](https://img.laitimes.com/img/9ZDMuAjOiMmIsIjOiQnIsIyZuBnL4IDOJ1WbfRkezZ3QBF0bGFTa5ZGMDpEbxw0bpt0dvw1M48CX5kzLcBDMN9CXyAzcml3dvwVbvNmLvR3YxUjLzM3Lc9CX6MHc0RHaiojIsJye.png)
(主)負載排程器:
建立映射端口(VIP)
優化環境:(/etc/sysctl.conf)
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.eth0.send_redirects = 0
sysctl -p
加載ip_vs子產品
modprobe ip_vs
檢視ipvs
cat /proc/net/ip_vs
安裝IPVS
yum install -y ipvsadm
檢視版本:
ipvsadm -v
設定負載排程器設定模式
ipvsadm -A -t 192.168.115.100:80 -s rr
ipvsadm -a -t 192.168.115.100:80 -r 192.168.115.173:80 -g(173和176分别指向兩個RS)
ipvsadm -a -t 192.168.115.100:80 -r 192.168.115.176:80 -g
檢視:
ipvsadm -Ln
安裝keepalived
yum install -y gcc* kernel-devel openssl-devel popt-devel ipvsadm
tar -xvf keepalived-1.2.7.tar.gz
./configure --prefix=/ --with-kernel-dir=/usr/src/kernels/2.6.32-131.0.15.el6.i686
make && make install
chkconfig --add keepalived
chkconfig keepalived on
配置keepalived檔案:
啟動服務:
service keepalived start
共享資源伺服器:
搭建NFS給RS挂在使用
RS1:
安裝Apache服務
配置本地回環端口映射:
設定一條路由:
route add -host 192.168.115.100 dev lo:0
優化環境:
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.default.arp_ignore = 1
net.ipv4.conf.default.arp_announce = 2
net.ipv4.conf.lo.arp_ignore = 1
net.ipv4.conf.lo.arp_announce = 2
RS2:
安裝Apache服務,将内容從NFS伺服器上面挂在過來:
mount -t nfs 192.168.115.177:/share /var/www/html
設定映射網卡:
設定路由:
測試機通路:
每重新整理一次,内容一次輪詢:
下面搭建基于keepalived的LVS-DR
增加一個虛拟機作為從負載排程器:
測試機測試:
從伺服器成功接替工作:實驗成功:
配置檔案模闆:
! Configuration File for keepalived
global_defs {
router_id LVS_R1
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.115.100
virtual_server 192.168.115.100 80 {
delay_loop 6
lb_algo rr
lb_kind DR
protocol TCP
real_server 192.168.115.173 80 {
weight 1
TCP_CHECK {
connect_port 80
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
real_server 192.168.115.176 80 {
在做從負載排程器的時候,因為有兩個網卡公用一個位址,這樣啟動網卡的時候會報錯
解決辦法:
vim /etc/sysconfig/network-scripts/ifup-eth
将圖示内容注釋即可
然後再重新開機網卡