高并发负载均衡实验
描述
node1
[root@MDNode01 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:BF:3A:BE
inet addr:192.168.25.50 Bcast:192.168.25.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:febf:3abe/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:135 errors:0 dropped:0 overruns:0 frame:0
TX packets:62 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:11852 (11.5 KiB) TX bytes:7444 (7.2 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[root@MDNode01 ~]#
node2
[root@MDNode02 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:A6:A5:1F
inet addr:192.168.25.51 Bcast:192.168.25.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fea6:a51f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:143 errors:0 dropped:0 overruns:0 frame:0
TX packets:60 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:12448 (12.1 KiB) TX bytes:7524 (7.3 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
node3
[root@MDNode03 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:BA:98:84
inet addr:192.168.25.52 Bcast:192.168.25.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:feba:9884/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:138 errors:0 dropped:0 overruns:0 frame:0
TX packets:57 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:12148 (11.8 KiB) TX bytes:7058 (6.8 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[root@MDNode03 ~]#
node4
[root@MDNode04 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:C8:97:80
inet addr:192.168.25.53 Bcast:192.168.25.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fec8:9780/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:118 errors:0 dropped:0 overruns:0 frame:0
TX packets:51 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:10484 (10.2 KiB) TX bytes:6270 (6.1 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[root@MDNode04 ~]#
配置node1为lvs服务器
配置一个VIP的网络模式
[root@MDNode01 ~]# ifconfig eth0:2 192.168.25.100/24
[root@MDNode01 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:BF:3A:BE
inet addr:192.168.25.50 Bcast:192.168.25.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:febf:3abe/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:357 errors:0 dropped:0 overruns:0 frame:0
TX packets:147 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:29228 (28.5 KiB) TX bytes:17202 (16.7 KiB)
eth0:2 Link encap:Ethernet HWaddr 00:0C:29:BF:3A:BE
inet addr:192.168.25.100 Bcast:192.168.25.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
[root@MDNode01 ~]# cat /proc/sys/net/ipv4/ip_forward
0
[root@MDNode01 ~]# echo 1 > /proc/sys/net/ipv4/ip_forward
[root@MDNode01 ~]# cat /proc/sys/net/ipv4/ip_forward
1
配置三台SR服务器
[root@MDNode03 ~]# echo 1 > /proc/sys/net/ipv4/conf/eth0/arp_ignore
[root@MDNode03 ~]# echo 2 > /proc/sys/net/ipv4/conf/eth0/arp_announce
[root@MDNode03 ~]# cat /proc/sys/net/ipv4/conf/eth0/arp_ignore
1
[root@MDNode03 ~]# cat /proc/sys/net/ipv4/conf/eth0/arp_announce
2
[root@MDNode03 ~]# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
[root@MDNode03 ~]# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
[root@MDNode03 ~]# cat /proc/sys/net/ipv4/conf/all/arp_announce
2
[root@MDNode03 ~]# cat /proc/sys/net/ipv4/conf/all/arp_ignore
1
[root@MDNode03 ~]# ifconfig lo:2 192.168.25.100 netmask 255.255.255.255
[root@MDNode03 ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:0C:29:BA:98:84
inet addr:192.168.25.52 Bcast:192.168.25.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:feba:9884/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1530 errors:0 dropped:0 overruns:0 frame:0
TX packets:731 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:132474 (129.3 KiB) TX bytes:85442 (83.4 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
lo:2 Link encap:Local Loopback
inet addr:192.168.25.100 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:16436 Metric:1
[root@MDNode03 ~]# yum install httpd -y
配置服务器httpd服务
[root@MDNode03 ~]# vi /var/www/html/index.html
[root@MDNode03 ~]# cat /var/www/html/index.html
<h1>192.168.25.52</h1>
[root@MDNode03 ~]# service httpd start
Starting httpd: httpd: Could not reliably determine the server's fully qualif, using 192.168.25.52 for ServerName
[ OK ]
返回LVS服务器中配置
安装：
[root@MDNode01 ~]# yum install ipvsadm -y
配置：
[root@MDNode01 ~]# ipvsadm -A -t 192.168.25.100:80 -s rr
[root@MDNode01 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.25.100:80 rr
[root@MDNode01 ~]# ipvsadm -a -t 192.168.25.100:80 -r 192.168.25.51 -g
[root@MDNode01 ~]# ipvsadm -a -t 192.168.25.100:80 -r 192.168.25.52 -g
[root@MDNode01 ~]# ipvsadm -a -t 192.168.25.100:80 -r 192.168.25.53 -g
[root@MDNode01 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.25.100:80 rr
-> 192.168.25.51:80 Route 1 0 0
-> 192.168.25.52:80 Route 1 0 0
-> 192.168.25.53:80 Route 1 0 0
查询日志：
ipvsadm -lnc
[root@MDNode01 ~]# ipvsadm -lnc
IPVS connection entries
pro expire state source virtual destination
TCP 00:56 FIN_WAIT 192.168.25.54:34940 192.168.25.100:80 192.168.25.51:80
TCP 01:57 FIN_WAIT 192.168.25.1:11969 192.168.25.100:80 192.168.25.53:80
TCP 14:58 ESTABLISHED 192.168.25.1:11970 192.168.25.100:80 192.168.25.52:80
TCP 00:50 FIN_WAIT 192.168.25.54:34938 192.168.25.100:80 192.168.25.53:80
TCP 00:47 FIN_WAIT 192.168.25.54:34937 192.168.25.100:80 192.168.25.51:80
TCP 01:56 FIN_WAIT 192.168.25.1:11966 192.168.25.100:80 192.168.25.53:80
TCP 00:53 FIN_WAIT 192.168.25.54:34939 192.168.25.100:80 192.168.25.52:80
TCP 01:56 FIN_WAIT 192.168.25.1:11967 192.168.25.100:80 192.168.25.52:80
TCP 01:56 FIN_WAIT 192.168.25.1:11968 192.168.25.100:80 192.168.25.51:80
netstat -natp
[root@MDNode01 ~]# netstat -natp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN
tcp 0 64 192.168.25.50:22 192.168.25.1:10753 ESTABLISHE
tcp 0 0 :::22 :::* LISTEN
tcp 0 0 ::1:25 :::* LISTEN
其他的RS
[root@MDNode03 ~]# netstat -natp
Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address Foreign Address Sogram name
tcp 0 0 0.0.0.0:22 0.0.0.0:* Lhd
tcp 0 0 127.0.0.1:25 0.0.0.0:* Laster
tcp 0 64 192.168.25.52:22 192.168.25.1:10757 Eshd
tcp 0 0 :::80 :::* Lttpd
tcp 0 0 :::22 :::* Lhd
tcp 0 0 ::1:25 :::* Laster
tcp 0 0 ::ffff:192.168.25.100:80 ::ffff:192.168.25.1:12791 T
tcp 0 0 ::ffff:192.168.25.100:80 ::ffff:192.168.25.1:12803 T
tcp 0 0 ::ffff:192.168.25.100:80 ::ffff:192.168.25.1:12800 T
tcp 0 0 ::ffff:192.168.25.100:80 ::ffff:192.168.25.1:12794 T
tcp 0 0 ::ffff:192.168.25.100:80 ::ffff:192.168.25.1:12806 T
tcp 0 0 ::ffff:192.168.25.100:80 ::ffff:192.168.25.1:12797 T
tcp 0 0 ::ffff:192.168.25.100:80 ::ffff:192.168.25.1:12809 T
问题：
1、单点servce其中有一台挂机？？？
主备解决单点故障问题
高可用的提出>>
选择备用的选择???
备机加权
主机和备机之间的通讯???
主机广播的方式，备机分析
主机广播主机的运行状态，备机分析，主机挂机后，备机权值推荐。