heartbeat v2+ldirectord+LVS集群

操作目的

基于heartbeat v2和heartbeat-ldirectord实现LVS(DR)中Director的高可用，基于httpd提供web服务，并通过hb_gui的图形界面进行；

规划

准备工作：三台主机，分别配置如图所示的IP 和主机名

注意：1、rs1和rs2提供的不同的页面，目的是让效果明显
2 、VIP，即虚拟地址，不能被其他主机占用
3、director中的ipvsadm和vip都要确保是关闭的，让CRM来管理这些资源

一、配置LVS（DR)模型

rs1
#setenforce 0 //关闭selinux
#yum -y install httpd
# echo "<h1>rs1</h1>" >> /var/www/html/index.html //提供页面文件
#service httpd start
# echo 1 > /proc/sys/net/ipv4/conf/eth0/arp_ignore
# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
# echo 2 > /proc/sys/net/ipv4/conf/eth0/arp_announce
# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
# ifconfig lo:0 172.16.220.100 broadcast 172.16.220.100 netmask 255.255.255.255 up
# route add -host 172.16.220.100 dev lo:0
# elinks -dump http://172.16.220.21 //测试
rs1
# elinks -dump http://172.16.220.10
rs1
rs2:
#setenforce 0
# yum -y install httpd
# echo "<h1>rs2</h1>" >> /var/www/html/index.html
#service httpd start
# echo 1 > /proc/sys/net/ipv4/conf/eth0/arp_ignore
# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
# echo 2 > /proc/sys/net/ipv4/conf/eth0/arp_announce
# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
# ifconfig lo:0 172.16.220.100 broadcast 172.16.220.100 netmask 255.255.255.255 up
# route add -host 172.16.220.100 dev lo:0
# elinks -dump http://172.16.220.22
rs2
# elinks -dump http://172.16.220.100
rs2
Directory :node1
#setenforce 0
# yum -y install ipvsadm //安装ipvsam
# ifconfig eth0:0 172.16.220.100 broadcast 172.16.220.100 netmask 255.255.255.255 up
# route add -host 172.16.220.100 dev eth0:0
# echo 1 > /proc/sys/net/ipv4/ip_forward
# ipvsadm -A -t 172.16.220.100:80 -s r
# ipvsadm -a -t 172.16.220.100:80 -r 172.16.220.21 -g
# ipvsadm -a -t 172.16.220.100:80 -r 172.16.220.22 -g
# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 172.16.220.100:80 rr
-> 172.16.220.22:80 Route 1 0 0
-> 172.16.220.21:80 Route 1 0 0
测试;172.16.220.100 效果是rs1 rs2的轮询
到此，一个LVS的DR模型创建成功了。

二、把Director做成高可用

node1 node2 做成高可用集群中，如规划图所示

1 停止node1的相关资源

node1:
#ipvsadm -S > /etc/sysconfig/ipvsadm
#service ipvsadm restart
#ipvsadm -ln
#service ipvsadm stop
#chkconfig ipvsadm off
#chkconfig --list ipvsadm
# ifconfig eth0:0 down

2 把node2做成director

#setenforce 0
#yum -y install ipvsadm
# ifconfig eth0:0 172.16.220.100 broadcast 172.16.220.100 netmask 255.255.255.255 up
# route add -host 172.16.200.100 dev eth0:0
# echo 1 > /proc/sys/net/ipv4/ip_forward
# ipvsadm -A -t 172.16.220.100:80 -s rr
# ipvsadm -a -t 172.16.220.100:80 -r 172.16.220.21 -g
# ipvsadm -a -t 172.16.220.100:80 -r 172.16.220.22 -g
# ipvsadm -ln //查看定义的结果
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 172.16.220.100:80 rr
-> 172.16.220.22:80 Route 1 0 0
-> 172.16.220.21:80 Route 1 0 0
测试：浏览器输入172.16.220.100 结果rs1 rs2轮询，工作正常

3 停止node2的相关资源

# ipvsadm -S > /etc/sysconfig/ipvsadm
#service ipvsadm restart
#ipvsadm -ln
#service ipvsadm stop
#chkconfig ipvsadm off
#chkconfig --list ipvsadm
# ifconfig eth0:0 down

4 把node1 node2做成集群

4.1 配置时间同步、ssh 互连

node1:
#hwclock -s //与系统时间一致
#vim /etc/hosts
添加
172.16.220.11 node1
172.16.220.12 node2
# ssh-keygen -t rsa //交互的方式，Enter即可
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
9e:2f:7d:c7:c3:ab:cb:11:da:04:6c:4a:d6:31:29:78 root@node1
# ssh-copy-id -i .ssh/id_rsa.pub root@node2 //与node2建立通信
15
The authenticity of host 'node2 (172.16.220.12)' can't be established.
RSA key fingerprint is 16:15:c4:65:45:d7:ea:c2:a7:29:4b:25:d1:ff:72:c8.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'node2,172.16.220.12' (RSA) to the list of known hosts.
root@node2's password:
Now try logging into the machine, with "ssh 'root@node2'", and check in:
.ssh/authorized_keys
to make sure we haven't added extra keys that you weren't expecting.
#ssh node2 'ifconfig' //测试，显示node2的"ifconfig"的相关内容
node2:
#hwclock -s
#vim /etc/hosts
添加
172.16.220.11 node1
172.16.220.12 node2
# ssh-keygen -t rsa （交互中的Enter即可）
# ssh-copy-id -i .ssh/id_rsa.pub root@node1
#ssh node1 'ifconfig' //测试即可

4.2 在集群节点node1 node2上安装heartbeat

需要的包有

heartbeat-2.1.4-9.el5.i386.rpm
heartbeat-pils-2.1.4-10.el5.i386.rpm
heartbeat-stonith-2.1.4-10.el5.i386.rpm
libnet-1.1.4-3.el5.i386.rpm
perl-MailTools-1.77-1.el5.noarch.rpm
heartbeat-ldirectord-2.1.4-9.el5.i386.rpm
heartbeat-gui-2.1.4-9.el5.i386.rpm

node1 node1安装软件包：
# yum -y --nogpgcheck localinstall heartbeat-2.1.4-9.el5.i386.rpm heartbeat-pils-2.1.4-10.el5.i386.rpm heartbeat-stonith-2.1.4-10.el5.i386.rpm libnet-1.1.4-3.el5.i386.rpm perl-MailTools-1.77-1.el5.noarch.rpm heartbeat-ldirectord-2.1.4-9.el5.i386.rpm heartbeat-gui-2.1.4-9.el5.i386.rpm
node1:(以下的配置都是在node1上完成的，node2不需要再操作）
#cp /usr/share/doc/heartbeat-2.1.4/ha.cf authkeys haresources /etc/ha.d/
#cp /usr/share/doc/heartbeat-ldirectord-2.1.4/ldirectord.cf /etc/ha.d/
#cd /etc/ha.d/
#chmod 600 authkeys
#vim authkeys
auth 1 (dd if=/dev/urandom count=512 bs=1 | md5sum生成的随机字符串，最后一行)
1 md5 7b1b89ead5bcc0265a8d419ef91de7f7
# vim ha.cf
将#bcast eth0 # Linux启用
改为 bcast eth0
将#node   ken3
#node   kathy
启用并修改为：
node    node1
node    node2
将#ping 10.10.10.254
启用，并改为：
ping 172.16.0.1
compression_threshold 2
compression bz2
并添加;
crm on
#vim haresources
添加
node1 172.16.220.100/16/eth0/172.16.220.255 httpd
#vim ldirectord.cf
内容如下：
checktimeout=3
checkinterval=1
utoreload=yes
logfile="/var/log/ldirectord.log"
quiescent=yes
virtual=172.16.220.100:80
real=172.16.220.21:80 gate
real=172.16.220.22：80 gate
fallback=127.0.0.1:80 gate
service=http
request=".test.html"
receive="OK"
scheduler=rr
protocol=tcp
checktype=negotiate
checkport=80
#scp -p authkeys ha.cf haresources ldirectord.cf node2:/etc/ha.d/
（注意此时在rs1 rs2的上分别配置;echo "<h1>OK</h1>" >> /var/www/html/.test.html)
#chkconfig ldirectord off
#passwd hacluster //在此节点上修改hacluster的密码
redhat
#service heartbeat start //启动本节点服务
#ssh node2 '/etc/rc.d/init.d/heartbeat start' //启动node2节点的服务
#hb_gui & //打开图像界面配置

1）出现图形界面 Connection --Login

输入密码：redhat，点击OK即可
进入之后观察node1 node2都处于running状态为正常

2）添加资源

第一个资源：
Resource IP:ldrictord
Type 选中ldirecotd 点击Add 即可资源上右击--Start 发现运行在其中一个节点上

第二个资源：

Resource IP:vip
Type 选中IPaddr
Name 下面给ip一个地址为 172.16.220.100
Add Parameter 选中lvs_support 并为true
点击Add即可 --资源上右击--Start 运行在其中一个节点上

3）定义资源约束
Colocations--Add New Item 默认点击OK即可，配置如下

Order---Add New Item 默认点击OK即可，配置如下

4）启动资源并测试
配置后的结果如下

在node2上做测试

#ifconfig
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:5B:DC:50
inet addr:172.16.220.100 Bcast:172.16.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:67 Base address:0x2000
#ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 172.16.220.100:80 rr
-> 172.16.220.21:80 Route 1 0 0
-> 172.16.220.22:80 Route 1 0 0

最后浏览172.16.220.100 效果是rs1 rs2的轮询

转载于:https://blog.51cto.com/xinghuiru/954743

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