实验目的：实现linux系统集群并发处理某项服务(这里以web服务为例)。
实验材料：8g内存、酷睿i5-3230m、英伟达720m的win10主机。Centos6.4完整版镜像，安装好的vmware11，三台安装好的纯净的centos6.4虚拟机。
实验原理：
Lvs不需要安装，因为linux2.6内核内包涵了，名字叫ipvsadm
实验步骤：
第一步安装支持包：
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yum -y
install
PyXML net-snmp-libs libnetrpm
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但是centos没有提供libnet的包需要到epel上下载libnet的包下载后安装：rpm-ivh libnet-1.1.6-7.el6.x86_64.rpm
第二步还是安装支持包：
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yum -y
install
ipvsadm perl-MailTools perl-TimeDate
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第三步：按顺序安装heartbeat:
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rpm -ivh heartbeat-pils-2.1.4-12.el6.x86_64.rpm
rpm -ivhheartbeat-stonith-2.1.4-12.el6.x86_64.rpm
rpm -ivh heartbeat-2.1.4-12.el6.x86_64.rpm
rpm -ivhheartbeat-ldirectord-2.1.4-12.el6.x86_64.rpm
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永久更改主机名：vim/etc/sysconfig/network
Node1.lw.com
Node2.lw.com
Node3.lw.com
暂时更改主机名：hostname xxxxxxx
永久更改主机名：vim/etc/sysconfig/network
node1.lw.com
node2.lw.com
暂时更改主机名：hostname xxxxxxx
更改/etc/hosts
添加
192.168.6.104 node1.lw.com
192.168.6.105 node2.lw.com
下一步建立双机互信通信：这里以bode2为例
1.生成一对密钥
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[root@node2 ~]
# ssh-keygen -t rsa -P '' -f .ssh/id_rsa
Generating public
/private
rsa key pair.
Your identification has been saved
in
.
ssh
/id_rsa
.
Your public key has been saved
in
.
ssh
/id_rsa
.pub.
The key fingerprint is:
a6:cc:09:67:e3:45:81:59:aa:3b:7d:61:93:38:4b:32root@node2.lw.com
The key's randomart image is:
+--[ RSA 2048]----+
| +o |
| o. . |
| . . |
| . o . |
| E B S |
| & X o |
| o O . |
| . . |
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+-----------------+
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(若是没有ssh到过其他主机，root目录下就没.ssh目录，方法。。。)
2.把公钥传到其他主机上：
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[root@node2 ~]
# ssh-copy-id -i .ssh/id_rsa.pubroot@node1.lw.com
The authenticity of host
'node1.lw.com(192.168.6.104)'
can't be established.
RSA key fingerprint isc9:17:0b:0f:a3:0e:d8:8d:a8:06:ad:2b:ba:d7:7c:1a.
Are you sure you want to continueconnecting (
yes
/no
)?
yes
Warning: Permanently added
'node1.lw.com'
(RSA) to the list of known hosts.
root@node1.lw.com's password:
Now try logging into the machine, with
"ssh 'root@node1.lw.com'"
, and check
in
:
.
ssh
/authorized_keys
to
make
sure we haven
't added extra keysthat you weren'
t expecting.
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测试一下：
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[root@node2 ~]
# ssh 192.168.6.104'ifconfig'
eth1 Link encap:Ethernet HWaddr00:0C:29:12:62:A0
inet addr:192.168.6.104 Bcast:192.168.6.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe12:62a0
/64
Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1977 errors:0 dropped:0 overruns:0 frame:0
TX packets:1371 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:195441 (190.8 KiB) TXbytes:169856 (165.8 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:184 errors:0 dropped:0 overruns:0 frame:0
TX packets:184 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:25686 (25.0 KiB) TXbytes:25686 (25.0 KiB)
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到另外一台主机上重复步骤：
把公钥发到node2.lw.com
查看：安装好的heartbeat的文件在哪里
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[root@node2 ~]
# rpm -ql heartbeat |less
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复制三个重要文件
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cp
/usr/share/heartbeat2
.1.4/{ha.cf,authkeys,haresource}
/etc/ha
.d/
[root@node3 ha.d]
# vim haresources
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在最后面添加一行，
node3.lw.com IPaddr::192.168.6.108/24/eth1httpd
其中node3.lw.com是设置的默认主节点。
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[root@node3 ha.d]
# vim ha.cf
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其中的这几行去掉#
debugfile /var/log/ha-debug
logfacility local0
keepalive 2
bcast eth1
auto_failback on
ping 192.168.6.103
其他的用默认就好
接下来注意是定义有哪些主机是ha节点的：
#node ken3
#node kathy
node node2.lw.com
node node3.lw.com
[root@node3 ha.d]# vim authkeys
添加两行
auth 1
1 md5 051322a335b4106681e9b78079a288f6
其中md5后面是MD5加密的掺杂的杂质
生成随机杂质的方法
[root@node3 ha.d]# dd if=/dev/randomcount=1 bs=512 |md5sum
记录了0+1 的读入
记录了0+1 的写出
128字节(128 B)已复制，6.974e-05秒，1.8 MB/秒
e13b8264a0810373e5dd3bdc3e6a4e7a -
[root@node3 ha.d]#
第一个节点配置好后复制到第二个节点：
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[root@node3 ha.d]
# scp authkeys haresourcesha.cf node2.lw.com:/etc/ha.d/
authkeys 100% 693 0.7KB
/s
00:00
haresources 100% 5948 5.8KB
/s
00:00
ha.cf 100% 10KB 10.3KB
/s
00:00
[root@node3 ha.d]
# service heartbeatrestart
Stopping High-Availability services:
Done.
Waiting to allow resource takeover tocomplete:
^[[A^[[B^[[BDone.
Starting High-Availability services:
2015
/11/12_19
:09:07 INFO: Resource is stopped
Done.
[root@node3 ha.d]
# ssh node2.lw.com'service heartbeat restart'
Stopping High-Availability services:
Done.
Waiting to allow resource takeover tocomplete:
Done.
Starting High-Availability services:
2015
/11/12_19
:09:33 INFO: Resource is stopped
Done.
[root@node2 ~]
# ifconfig
eth1 Link encap:Ethernet HWaddr00:0C:29:7A:7C:A8
inet addr:192.168.6.105 Bcast:192.168.6.255 Mask:255.255.255.0
inet6 addr: fe80::20c:29ff:fe7a:7ca8
/64
Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:8667 errors:0 dropped:0 overruns:0 frame:0
TX packets:6828 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2398319 (2.2 MiB) TX bytes:933830 (911.9 KiB)
eth1:0 Link encap:Ethernet HWaddr00:0C:29:7A:7C:A8
inet addr:192.168.6.108 Bcast:192.168.6.255 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:4 errors:0 dropped:0 overruns:0 frame:0
TX packets:4 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:358 (358.0 b) TXbytes:358 (358.0 b)
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看eth1有了别名了吧。有了说明已经成功，到浏览器上
访问192.168.6.108
本文转自Ailu0li 51CTO博客，原文链接：，http://blog.51cto.com/oldking/1741350如需转载请自行联系原作者
