在linux下搭建HA和LB集羣（lvs&heartbeat羣集）
案例應用拓撲圖：
軟件包下載地址：http://down.51cto.com/data/402474
案例應用實現詳細步驟如下：
一．DNS服務器配置
1.1 在real-server-1上的DNS服務器配置：
[root@server1 ~]# yum install bind bind-chroot caching-nameserver –y
[root@server1 ~]# cd /var/named/chroot/etc/
[root@server1 etc]# cp -p named.caching-nameserver.conf named.conf
[root@server1 etc]# vim named.conf
15 listen-on port 53 { any; };
27 allow-query { any; };
28 allow-query-cache { any; };
37 match-clients { any; };
38 match-destinations { any; };
[root@server1 etc]# vim named.rfc1912.zones
20 zone "japan.com" IN {
21 type master;
22 file "japan.com.db";
23 allow-update { none; };
24 };
37 zone "2.168.192.in-addr.arpa" IN {
38 type master;
39 file "192.168.2.db";
40 allow-update { none; };
41 };
[root@server1 etc]# cd ../var/named/
[root@server1 named]# cp -p localhost.zone japan.com.db
[root@server1 named]# cp -p named.local 192.168.2.db
[root@server1 named]# vim japan.com.db
1 $TTL 86400
2 @ IN SOA ns.japan.com. root (
3 43 ; serial (d. adams )
4 3H ; refresh
5 15M ; retry
6 1W ; expiry
7 1D ) ; minimum
8
9 @ IN NS ns.japan.com.
10 ns IN A 192.168.2.131
11 www IN A 192.168.2.133
12 director1 IN A 192.168.2.134
13 director2 IN A 192.168.2.135
[root@server1 named]# vim 192.168.2.db
1 $TTL 86400
2 @ IN SOA localhost. root.localhost. (
3 1997022700 ; Serial
4 28800 ; Refresh
5 14400 ; Retry
6 3600000 ; Expire
7 86400 ) ; Minimum
8 IN NS localhost.
9 133 IN PTR www.japan.com.
10 134 IN PTR director1.japan.com.
11 135 IN PTR director2.japan.com.
[root@server1 named]# service named restart
Stopping named: [ OK ]
Starting named: [ OK ]
[root@server1 named]# rndc reload
server reload successful
1.2 在real-server-2上的DNS服務器配置：
[root@server2 ~]# yum install bind bind-chroot caching-nameserver –y
[root@server2 ~]# cd /var/named/chroot/etc/
[root@server2 etc]# cp -p named.caching-nameserver.conf named.conf
[root@server2 etc]# vim named.conf
15 listen-on port 53 { any; };
27 allow-query { any; };
28 allow-query-cache { any; };
37 match-clients { any; };
38 match-destinations { any; };
[root@server2 etc]# vim named.rfc1912.zones
20 zone "japan.com" IN {
21 type master;
22 file "japan.com.db";
23 allow-update { none; };
24 };
37 zone "2.168.192.in-addr.arpa" IN {
38 type master;
39 file "192.168.2.db";
40 allow-update { none; };
41 };
[root@server2 etc]# cd ../var/named/
[root@server2 named]# cp -p localhost.zone japan.com.db
[root@server2 named]# cp -p named.local 192.168.2.db
[root@server2 named]# vim japan.com.db
1 $TTL 86400
2 @ IN SOA ns.japan.com. root (
3 43 ; serial (d. adams )
4 3H ; refresh
5 15M ; retry
6 1W ; expiry
7 1D ) ; minimum
8
9 @ IN NS ns.japan.com.
10 ns IN A 192.168.2.131
11 www IN A 192.168.2.133
12 director1 IN A 192.168.2.134
13 director2 IN A 192.168.2.135
[root@server2 named]# vim 192.168.2.db
1 $TTL 86400
2 @ IN SOA localhost. root.localhost. (
3 1997022700 ; Serial
4 28800 ; Refresh
5 14400 ; Retry
6 3600000 ; Expire
7 86400 ) ; Minimum
8 IN NS localhost.
9 133 IN PTR www.japan.com.
10 134 IN PTR director1.japan.com.
11 135 IN PTR director2.japan.com.
[root@server2 named]# service named restart
Stopping named: [ OK ]
Starting named: [ OK ]
[root@server2 named]# rndc reload
server reload successful
二 . Director-1服務器配置
2.1 Director-1服務器ip地址配置
[root@director1 ~]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=director1.japan.com
[root@director1 ~]# setup
[root@director1 ~]# service network restart
Shutting down interface eth0: [ OK ]
Shutting down interface eth1: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]
Bringing up interface eth1: [ OK ]
[root@director1 ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:0C:29:66:E1:DA
inet addr:192.168.2.134 Bcast:192.168.2.143 Mask:255.255.255.240
[root@director1 ~]# ifconfig eth0:0
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:66:E1:DA
inet addr:192.168.2.133 Bcast:192.168.2.133 Mask:255.255.255.255
[root@director1 ~]# ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:0C:29:66:E1:E4
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
2.2 爲director-1添加路由
[root@director1 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.128 0.0.0.0 255.255.255.240 U 0 0 0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
0.0.0.0 192.168.2.133 0.0.0.0 UG 0 0 0 eth0
0.0.0.0 192.168.2.142 0.0.0.0 UG 0 0 0 eth0
[root@director1 ~]# route add -host 192.168.2.133 dev eth0:0
[root@director1 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.133 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
192.168.2.128 0.0.0.0 255.255.255.240 U 0 0 0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
0.0.0.0 192.168.2.133 0.0.0.0 UG 0 0 0 eth0
0.0.0.0 192.168.2.142 0.0.0.0 UG 0 0 0 eth0
2.3 配置本地yum服務器：
[root@director1 ~]# vim /etc/yum.repos.d/server.repo
[rhel-server]
name=Red Hat Enterprise Linux server
baseurl=file:///mnt/cdrom/Server/
enabled=1
gpgcheck=1
gpgkey=file:///mnt/cdrom/RPM-GPG-KEY-redhat-release
[rhel-cluster]
name=Red Hat Enterprise Linux cluster
baseurl=file:///mnt/cdrom/Cluster/
enabled=1
gpgcheck=1
gpgkey=file:///mnt/cdrom/RPM-GPG-KEY-redhat-release
[root@director1 ~]#mkdir /mnt/cdrom
[root@director1 ~]# mount /dev/cdrom /mnt/cdrom/
mount: block device /dev/cdrom is write-protected, mounting read-only
[root@director 1~]#yum list all
2.4 安裝配置dircetor-1服務器：
[root@director1 ~]# yum install -y ipvsadm
[root@director1 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
[root@director1 ~]# ipvsadm -A -t 192.168.2.133:80 -s rr
[root@director1 ~]# ipvsadm -a -t 192.168.2.133:80 -r 192.168.2.131 -g
[root@director1 ~]# ipvsadm -a -t 192.168.2.133:80 -r 192.168.2.132 -g
[root@director1 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.2.133:80 rr
-> 192.168.2.132:80 Route 1 0 0
-> 192.168.2.131:80 Route 1 0 0
[root@director1 ~]# service ipvsadm save
Saving IPVS table to /etc/sysconfig/ipvsadm: [ OK ]
[root@director1 ~]# service ipvsadm restart
Clearing the current IPVS table: [ OK ]
Applying IPVS configuration: [ OK ]
[root@director1 ~]# service ipvsadm stop
Clearing the current IPVS table: [ OK ]
三 . Director-2服務器配置
3.1 Director服務器ip地址配置
[root@director2 ~]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=director2.japan.com
[root@director2 ~]# setup
[root@director2 ~]# service network restart
Shutting down interface eth0: [ OK ]
Shutting down interface eth1: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]
Bringing up interface eth1: [ OK ]
[root@director2 ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:0C:29:79:F8:F7
inet addr:192.168.2.135 Bcast:192.168.2.143 Mask:255.255.255.240
[root@director2 ~]# ifconfig eth0:0
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:79:F8:F7
inet addr:192.168.2.133 Bcast:192.168.2.133 Mask:255.255.255.255
[root@director2 ~]# ifconfig eth1
eth1 Link encap:Ethernet HWaddr 00:0C:29:79:F8:01
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
3．2 爲director-2添加路由
[root@director2 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.128 0.0.0.0 255.255.255.240 U 0 0 0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
0.0.0.0 192.168.2.133 0.0.0.0 UG 0 0 0 eth0
0.0.0.0 192.168.2.142 0.0.0.0 UG 0 0 0 eth0
[root@director2 ~]# route add -host 192.168.2.133 dev eth0:0
[root@director2 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.133 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
192.168.2.128 0.0.0.0 255.255.255.240 U 0 0 0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
0.0.0.0 192.168.2.133 0.0.0.0 UG 0 0 0 eth0
0.0.0.0 192.168.2.142 0.0.0.0 UG 0 0 0 eth0
3.3 配置本地yum服務器：
[root@director 2~]# vim /etc/yum.repos.d/server.repo
[rhel-server]
name=Red Hat Enterprise Linux server
baseurl=file:///mnt/cdrom/Server/
enabled=1
gpgcheck=1
gpgkey=file:///mnt/cdrom/RPM-GPG-KEY-redhat-release
[rhel-cluster]
name=Red Hat Enterprise Linux cluster
baseurl=file:///mnt/cdrom/Cluster/
enabled=1
gpgcheck=1
gpgkey=file:///mnt/cdrom/RPM-GPG-KEY-redhat-release
[root@director 2~]#mkdir /mnt/cdrom
[root@director2 ~]# mount /dev/cdrom /mnt/cdrom/
mount: block device /dev/cdrom is write-protected, mounting read-only
[root@director2 ~]#yum list all
3.4 安裝配置dircetor-2服務器：
[root@director 2~]# yum install -y ipvsadm
[root@director2 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
[root@director2 ~]# ipvsadm -A -t 192.168.2.133:80 -s rr
[root@director2 ~]# ipvsadm -a -t 192.168.2.133:80 -r 192.168.2.131 -g
[root@director2 ~]# ipvsadm -a -t 192.168.2.133:80 -r 192.168.2.132 -g
[root@director2 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.2.133:80 rr
-> 192.168.2.132:80 Route 1 0 0
-> 192.168.2.131:80 Route 1 0 0
[root@director2 ~]# service ipvsadm save
Saving IPVS table to /etc/sysconfig/ipvsadm: [ OK ]
[root@director2 ~]# service ipvsadm restart
Clearing the current IPVS table: [ OK ]
Applying IPVS configuration: [ OK ]
四．配置real-server-1的web服務器：
4.1 解決arp問題:
[root@server1 ~]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=server1.japan.com
[root@server1 ~]# echo "net.ipv4.conf.all.arp_announce = 2" >> /etc/sysctl.conf
[root@server1 ~]# echo "net.ipv4.conf.lo.arp_announce = 2" >> /etc/sysctl.conf
[root@server1 ~]# echo "net.ipv4.conf.all.arp_ignore = 1" >> /etc/sysctl.conf
[root@server1 ~]# echo "net.ipv4.conf.lo.arp_ignore = 1" >> /etc/sysctl.conf
[root@server1 ~]#sysctl -p
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.lo.arp_announce = 2
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.lo.arp_ignore = 1
4.2 配置ip地址和路由
[root@server1 ~]# setup
[root@server1 ~]# service network restart
Shutting down interface eth0: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]
[root@server1 ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:0C:29:1B:F1:BA
inet addr:192.168.2.131 Bcast:192.168.2.143 Mask:255.255.255.240
[root@server1 ~]# ifconfig lo:0
lo:0 Link encap:Local Loopback
inet addr:192.168.2.133 Mask:255.255.255.255
[root@server1 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.128 0.0.0.0 255.255.255.240 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 192.168.2.142 0.0.0.0 UG 0 0 0 eth0
[root@server1 ~]# route add -host 192.168.2.133 dev lo:0
[root@server1 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.133 0.0.0.0 255.255.255.255 UH 0 0 0 lo
192.168.2.128 0.0.0.0 255.255.255.240 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 192.168.2.142 0.0.0.0 UG 0 0 0 eth0
4.3 配置Real-server-1的Web服務器:
[root@server1 ~]#mkdir /mnt/cdrom
[root@server1 ~]# mount /dev/cdrom /mnt/cdrom/
mount: block device /dev/cdrom is write-protected, mounting read-only
[root@server1 ~]# rpm -ivh /mnt/cdrom/Server/httpd-2.2.3-31.el5.i386.rpm
warning: /mnt/cdrom/Server/httpd-2.2.3-31.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186
Preparing... #################################### [100%]
1:httpd ########################################### [100%]
[root@server1 ~]# echo "web1 -- real-server-1" > /var/www/html/index.html
[root@server1 ~]# service httpd start
Starting httpd: httpd: apr_sockaddr_info_get() failed for r1.junjie.com
httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
[ OK ]
4.4 客戶端配置信息
4.5 客戶端訪問real-server-1的web服務：（橋接）
五．配置real-server2的web服務器：
5.1 解決arp問題:
[root@server2 ~]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=server2.japan.com
[root@server2 ~]# echo "net.ipv4.conf.all.arp_announce = 2" >> /etc/sysctl.conf
[root@server2 ~]# echo "net.ipv4.conf.lo.arp_announce = 2" >> /etc/sysctl.conf
[root@server2 ~]# echo "net.ipv4.conf.all.arp_ignore = 1" >> /etc/sysctl.conf
[root@server2 ~]# echo "net.ipv4.conf.lo.arp_ignore = 1" >> /etc/sysctl.conf
[root@server2 ~]# sysctl -p
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.lo.arp_announce = 2
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.lo.arp_ignore = 1
5.2 配置ip地址和路由
[root@server2 ~]# setup
[root@server2 ~]# service network restart
Shutting down interface eth0: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]
[root@server2 ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:0C:29:AE:83:D1
inet addr:192.168.2.132 Bcast:192.168.2.143 Mask:255.255.255.240
[root@server2 ~]# ifconfig lo:0
lo:0 Link encap:Local Loopback
inet addr:192.168.2.133 Mask:255.255.255.255
UP LOOPBACK RUNNING MTU:16436 Metric:1
[root@server2 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.128 0.0.0.0 255.255.255.240 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 192.168.2.142 0.0.0.0 UG 0 0 0 eth0
[root@server2 ~]# route add -host 192.168.2.133 dev lo:0
[root@server2 ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.2.133 0.0.0.0 255.255.255.255 UH 0 0 0 lo
192.168.2.128 0.0.0.0 255.255.255.240 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 192.168.2.142 0.0.0.0 UG 0 0 0 eth0
5.3 配置Real-server-2的Web服務器：
[root@server2 ~]#mkdir /mnt/cdrom
[root@server2 ~]# mount /dev/cdrom /mnt/cdrom/
mount: block device /dev/cdrom is write-protected, mounting read-only
[root@server2 ~]# rpm -ivh /mnt/cdrom/Server/httpd-2.2.3-31.el5.i386.rpm
warning: /mnt/cdrom/Server/httpd-2.2.3-31.el5.i386.rpm: Header V3 DSA signature: NOKEY, key ID 37017186
Preparing... #################################### [100%]
1:httpd ########################################### [100%]
[root@server2 ~]#echo "web2 -- real-server-2" > /var/www/html/index.html l
[root@server2 ~]# service httpd start
Starting httpd: httpd: apr_sockaddr_info_get() failed for r2.junjie.vom
httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
[ OK ]
5.4 客戶端訪問real-server-2的web服務：（橋接）
六．客戶端測試lvs-DR模型：
6.1 測試1
關閉director-1的ipvsadm服務，確保以下信息
[root@director1 ~]# service ipvsadm stop
Clearing the current IPVS table: [ OK ]
[root@director1 ~]# service ipvsadm status
ipvsadm is stopped
開啓director-2的ipvsadm服務，確保以下信息
[root@director2 ~]# service ipvsadm restart
Clearing the current IPVS table: [ OK ]
Applying IPVS configuration: [ OK ]
[root@director2 ~]# service ipvsadm status
ipvsadm dead but subsys locked
客戶端訪問director-2的羣集服務服務：（網卡使用橋接模式）
客戶端開始不斷刷新，發現web2和web1交替出現，比率爲1:1，說明依次輪詢模式爲RR
在director-2上查看信息如下：輪詢調度比幾乎爲1:1；
說明lvs調度方法是用的是RR模式
[root@director2 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.2.133:80 rr
-> 192.168.2.131:80 Route 1 0 50
-> 192.168.2.132:80 Route 1 0 50
6.2 測試2
關閉director-2的ipvsadm服務，確保以下信息
[root@director2 ~]# service ipvsadm stop
Clearing the current IPVS table: [ OK ]
[root@director2 ~]# service ipvsadm status
ipvsadm is stopped
開啓director-1的ipvsadm服務，確保以下信息
[root@director1 ~]# service ipvsadm start
Clearing the current IPVS table: [ OK ]
Applying IPVS configuration: [ OK ]
[root@director1 ~]# service ipvsadm restart
Clearing the current IPVS table: [ OK ]
Applying IPVS configuration: [ OK ]
[root@director1 ~]# service ipvsadm status
ipvsadm dead but subsys locked
客戶端訪問director-1的羣集服務服務：（網卡使用橋接模式）
客戶端開始不斷刷新，發現web2和web1交替出現，比率爲1:1，說明依次輪詢模式爲RR
在director-1上查看信息如下：輪詢調度比幾乎爲1:1；
說明lvs調度方法是用的是RR模式
[root@director1 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.2.133:80 rr
-> 192.168.2.131:80 Route 1 0 25
-> 192.168.2.132:80 Route 1 0 25
七：heartbeat服務搭建
7．1首先停止ipvsadm服務：
[root@director1 ~]# service ipvsadm stop
Clearing the current IPVS table: [ OK ]
[root@director1 ~]# service ipvsadm status
ipvsadm is stopped
[root@director2 ~]# service ipvsadm stop
Clearing the current IPVS table: [ OK ]
[root@director2 ~]# service ipvsadm status
ipvsadm is stopped
7.2 下載heartbeat有關的軟件包，這裏我放在/root/HA目錄下了，並安裝
[root@director1 ~]# cd /root/HA/
[root@director1 HA]# ls
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
[root@director1 HA]# yum localinstall -y 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 --nogpgcheck
[root@director2 ~]# cd /root/HA/
[root@director2 HA]# ls
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
[root@director2 HA]# yum localinstall -y 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 --nogpgcheck
7.3 配置director-1的heartbeat服務：
[root@director1 HA]# cd /etc/ha.d/
[root@director1 ha.d]# cp /usr/share/doc/heartbeat-2.1.4/ha.cf ./
[root@director1 ha.d]# cp /usr/share/doc/heartbeat-2.1.4/authkeys ./
[root@director1 ha.d]# cp /usr/share/doc/heartbeat-2.1.4/haresources ./
[root@director1 ha.d]# cp /etc/init.d/ipvsadm resource.d/
[root@director1 ha.d]# vim ha.cf
#添加以下幾行
95 bcast eth1
214 node director1.japan.com
215 node director2.japan.com
[root@director1 ha.d]# vim haresources
45 director1.japan.com 192.168.2.133/28/eth0/192.168.2.143 ipvsadm
[root@director1 ha.d]# dd if=/dev/random bs=512 count=1 |openssl md5
0+1 records in
0+1 records out
128 bytes (128 B) copied, 0.000474241 seconds, 270 kB/s
007d644a23b1e0e6361fcce286268582
[root@director1 ha.d]# vim authkeys
#在末尾添加以下幾行：
auth 1
1 md5 007d644a23b1e0e6361fcce286268582
[root@director1 ha.d]# chmod 600 authkeys
啓動heartbeat服務：
[root@director1 ha.d]# service heartbeat status
heartbeat is stopped. No process
[root@director1 ha.d]# service heartbeat start
Starting High-Availability services:
2012/04/02_13:34:38 INFO: Running OK
2012/04/02_13:34:38 CRITICAL: Resource 192.168.2.133/27/eth0/192.168.2.143 is active, and should not be!
2012/04/02_13:34:38 CRITICAL: Non-idle resources can affect data integrity!
2012/04/02_13:34:38 info: If you don't know what this means, then get help!
2012/04/02_13:34:38 info: Read the docs and/or source to /usr/share/heartbeat/ResourceManager for more details.
CRITICAL: Resource 192.168.2.133/27/eth0/192.168.2.143 is active, and should not be!
CRITICAL: Non-idle resources can affect data integrity!
info: If you don't know what this means, then get help!
info: Read the docs and/or the source to /usr/share/heartbeat/ResourceManager for more details.
2012/04/02_13:34:38 CRITICAL: Non-idle resources will affect resource takeback!
2012/04/02_13:34:38 CRITICAL: Non-idle resources may affect data integrity!
[ OK ]
[root@director1 ha.d]# service heartbeat status
heartbeat OK [pid 6492 et al] is running on director1.japan.com [director1.japan.com]...
7.4 配置director-2的heartbeat服務：
[root@director2 HA]# cd /etc/ha.d/
[root@director2 ha.d]# cp /usr/share/doc/heartbeat-2.1.4/ha.cf ./
[root@director2 ha.d]# cp /usr/share/doc/heartbeat-2.1.4/authkeys ./
[root@director2 ha.d]# cp /usr/share/doc/heartbeat-2.1.4/haresources ./
[root@director2 ha.d]# cp /etc/init.d/ipvsadm resource.d/
[root@director2 ha.d]# vim ha.cf
#添加以下幾行
95 bcast eth1
214 node director1.japan.com
215 node director2.japan.com
[root@director2 ha.d]# vim haresources
45 director1.japan.com 192.168.2.133/28/eth0/192.168.2.143 ipvsadm
[root@director2 ha.d]# vim authkeys
#在末尾添加以下幾行：
auth 1
1 md5 007d644a23b1e0e6361fcce286268582
[root@director2 ha.d]# chmod 600 authkeys
[root@director2 ha.d]# service heartbeat status
heartbeat is stopped. No process
[root@director2 ha.d]# service heartbeat start
Starting High-Availability services:
2012/04/02_13:42:27 INFO: Running OK
2012/04/02_13:42:27 CRITICAL: Resource 192.168.2.133/27/eth0/192.168.2.143 is active, and should not be!
2012/04/02_13:42:27 CRITICAL: Non-idle resources can affect data integrity!
2012/04/02_13:42:27 info: If you don't know what this means, then get help!
2012/04/02_13:42:27 info: Read the docs and/or source to /usr/share/heartbeat/ResourceManager for more details.
CRITICAL: Resource 192.168.2.133/27/eth0/192.168.2.143 is active, and should not be!
CRITICAL: Non-idle resources can affect data integrity!
info: If you don't know what this means, then get help!
info: Read the docs and/or the source to /usr/share/heartbeat/ResourceManager for more details.
2012/04/02_13:42:27 CRITICAL: Non-idle resources will affect resource takeback!
2012/04/02_13:42:27 CRITICAL: Non-idle resources may affect data integrity!
[ OK ]
[root@director2 ha.d]# service heartbeat status
heartbeat OK [pid 6488 et al] is running on director2.japan.com [director2.japan.com]...
[root@director1 ha.d]# vim /etc/resolv.conf
1 ; generated by /sbin/dhclient-script
2 nameserver 192.168.2.131
3 nameserver 192.168.2.132
[root@director2 ~]# vim /etc/resolv.conf
1 ; generated by /sbin/dhclient-script
2 nameserver 192.168.2.131
3 nameserver 192.168.2.132
八．測試：
8.1 使用ip地址測試：
[root@director1 ha.d]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP www.japan.com:http rr
-> 192.168.2.131:http Route 1 0 7
-> 192.168.2.132:http Route 1 0 7
[root@director2 ~]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP www.japan.com:http rr
-> 192.168.2.131:http Route 1 0 0
-> 192.168.2.132:http Route 1 0 0
[root@director1 ~]# cat /etc/resolv.conf
; generated by /sbin/dhclient-script
nameserver 192.168.2.131
nameserver 192.168.2.132
[root@director2 ~]# cat /etc/resolv.conf
; generated by /sbin/dhclient-script
nameserver 192.168.2.131
nameserver 192.168.2.132
[root@director1 ha.d]# ipvsadm -A -t 192.168.2.133:53 -s rr
[root@director1 ha.d]# ipvsadm -a -t 192.168.2.133:53 -r 192.168.2.131 -g
[root@director1 ha.d]# ipvsadm -a -t 192.168.2.133:53 -r 192.168.2.132 -g
[root@director1 ha.d]# ipvsadm -A -u 192.168.2.133:53 -s rr
[root@director1 ha.d]# ipvsadm -a -u 192.168.2.133:53 -r 192.168.2.131 -g
[root@director1 ha.d]# ipvsadm -a -u 192.168.2.133:53 -r 192.168.2.132 -g
[root@director1 ha.d]# service ipvsadm save
Saving IPVS table to /etc/sysconfig/ipvsadm: [ OK ]
[root@director1 ha.d]# cat /etc/sysconfig/ipvsadm
-A -u 192.168.2.133:53 -s rr
-a -u 192.168.2.133:53 -r 192.168.2.132:53 -g -w 1
-a -u 192.168.2.133:53 -r 192.168.2.131:53 -g -w 1
-A -t 192.168.2.133:53 -s rr
-a -t 192.168.2.133:53 -r 192.168.2.132:53 -g -w 1
-a -t 192.168.2.133:53 -r 192.168.2.131:53 -g -w 1
-A -t 192.168.2.133:80 -s rr
-a -t 192.168.2.133:80 -r 192.168.2.131:80 -g -w 1
-a -t 192.168.2.133:80 -r 192.168.2.132:80 -g -w 1
[root@director2 ~]# ipvsadm -A -t 192.168.2.133:53 -s rr
[root@director2 ~]# ipvsadm -a -t 192.168.2.133:53 -r 192.168.2.131 -g
[root@director2 ~]# ipvsadm -a -t 192.168.2.133:53 -r 192.168.2.132 -g
[root@director2 ~]# ipvsadm -A -u 192.168.2.133:53 -s rr
[root@director2 ~]# ipvsadm -a -u 192.168.2.133:53 -r 192.168.2.131 -g
[root@director2 ~]# ipvsadm -a -u 192.168.2.133:53 -r 192.168.2.132 -g
[root@director2 ~]# service ipvsadm save
Saving IPVS table to /etc/sysconfig/ipvsadm: [ OK ]
[root@director2 ~]#
[root@director2 ~]# cat /etc/sysconfig/ipvsadm
-A -u 192.168.2.133:53 -s rr
-a -u 192.168.2.133:53 -r 192.168.2.132:53 -g -w 1
-a -u 192.168.2.133:53 -r 192.168.2.131:53 -g -w 1
-A -t 192.168.2.133:53 -s rr
-a -t 192.168.2.133:53 -r 192.168.2.132:53 -g -w 1
-a -t 192.168.2.133:53 -r 192.168.2.131:53 -g -w 1
-A -t 192.168.2.133:80 -s rr
-a -t 192.168.2.133:80 -r 192.168.2.131:80 -g -w 1
-a -t 192.168.2.133:80 -r 192.168.2.132:80 -g -w 1
8.2：使用域名http://www.japan.com/訪問，
並不斷刷新網頁，以下網頁交替出現
在director1上查看信息：
[root@director1 ha.d]# ifconfig eth0:0
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:66:E1:DA
inet addr:192.168.2.133 Bcast:192.168.2.143 Mask:255.255.255.240
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:19 Base address:0x2000
[root@director1 ha.d]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
UDP www.japan.com:domain rr
-> 192.168.2.131:domain Route 1 0 51
-> 192.168.2.132:domain Route 1 0 49
TCP www.japan.com:domain rr
-> 192.168.2.131:domain Route 1 0 0
-> 192.168.2.132:domain Route 1 0 0
TCP www.japan.com:http rr
-> 192.168.2.132:http Route 1 0 31
-> 192.168.2.131:http Route 1 0 30
在director2上查看信息：
root@director2 ha.d]# ifconfig eth0:0
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:79:F8:F7
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:19 Base address:0x2000
[root@director2 ha.d]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
可以看出此時director1爲主要的調度器，director2爲standby狀態！！
九：模擬director1服務器故障情況，並測試
9.1模擬失效情況：
[root@director1 ha.d]# cd /usr/lib/heartbeat/
[root@director1 heartbeat]# ls
[root@director1 heartbeat]# ./hb_standby # (模擬失效)
2012/04/02_17:00:35 Going standby [all].
在director1上查看信息：
[root@director1 heartbeat]# ifconfig eth0:0
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:66:E1:DA
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:19 Base address:0x2000
[root@director1 heartbeat]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
在director2上查看信息：
[root@director2 ha.d]# ifconfig eth0:0
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:79:F8:F7
inet addr:192.168.2.133 Bcast:192.168.2.143 Mask:255.255.255.240
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:19 Base address:0x2000
[root@director2 ha.d]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
UDP www.japan.com:domain rr
-> 192.168.2.131:domain Route 1 0 9
-> 192.168.2.132:domain Route 1 0 9
TCP www.japan.com:domain rr
-> 192.168.2.131:domain Route 1 0 0
-> 192.168.2.132:domain Route 1 0 0
TCP www.japan.com:http rr
-> 192.168.2.132:http Route 1 0 0
-> 192.168.2.131:http Route 1 0 0
9.2使用域名http://www.japan.com/訪問，
並不斷刷新網頁，以下網頁交替出現
[root@director2 ha.d]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
UDP www.japan.com:domain rr
-> 192.168.2.131:domain Route 1 0 13
-> 192.168.2.132:domain Route 1 0 12
TCP www.japan.com:domain rr
-> 192.168.2.131:domain Route 1 0 0
-> 192.168.2.132:domain Route 1 0 0
TCP www.japan.com:http rr
-> 192.168.2.132:http Route 1 0 30
-> 192.168.2.131:http Route 1 0 30
9.3 模擬故障恢復：
[root@director1 heartbeat]# ./hb_takeover
在director1上查看信息：
[root@director1 heartbeat]# ifconfig eth0:0
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:66:E1:DA
inet addr:192.168.2.133 Bcast:192.168.2.143 Mask:255.255.255.240
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:19 Base address:0x2000
[root@director1 heartbeat]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
UDP www.japan.com:domain rr
-> 192.168.2.131:domain Route 1 0 8
-> 192.168.2.132:domain Route 1 0 8
TCP www.japan.com:domain rr
-> 192.168.2.131:domain Route 1 0 0
-> 192.168.2.132:domain Route 1 0 0
TCP www.japan.com:http rr
-> 192.168.2.132:http Route 1 0 0
-> 192.168.2.131:http Route 1 0 0
在director2上查看信息：
[root@director2 ha.d]# ifconfig eth0:0
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:79:F8:F7
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:19 Base address:0x2000
[root@director2 ha.d]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
9.4使用域名訪問，並不斷刷新網頁，以下網頁交替出現
在director1上查看信息：
[root@director1 heartbeat]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
UDP 192.168.2.133:53 rr
-> 192.168.2.131:53 Route 1 0 22
-> 192.168.2.132:53 Route 1 0 22
TCP 192.168.2.133:53 rr
-> 192.168.2.131:53 Route 1 0 0
-> 192.168.2.132:53 Route 1 0 0
TCP 192.168.2.133:80 rr
-> 192.168.2.132:80 Route 1 0 25
-> 192.168.2.131:80 Route 1 0 24
至此在linux下搭建HA和LB集羣成功！！！
十．模擬web服務器故障情況：
10.1 故障測試
10.1.1 查看director1上的HA集羣信息：如下：
（可以看出director1爲主控制器，而且顯示的HA顯示了2個real-server的信息）
[root@director1 ~]# ifconfig eth0:0
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:66:E1:DA
inet addr:192.168.2.133 Bcast:192.168.2.143 Mask:255.255.255.240
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:19 Base address:0x2000
[root@director1 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
UDP 192.168.2.133:53 rr
-> 192.168.2.131:53 Route 1 0 97
-> 192.168.2.132:53 Route 1 0 97
TCP 192.168.2.133:53 rr
-> 192.168.2.131:53 Route 1 0 0
-> 192.168.2.132:53 Route 1 0 0
TCP 192.168.2.133:80 rr
-> 192.168.2.132:80 Route 1 0 0
-> 192.168.2.131:80 Route 1 0 0
10.1.2 在real-server-1上的停止httpd和named服務，模擬real-server-1服務器故障，如下：
[root@server1 ~]# service httpd stop
Stopping httpd: [ OK ]
[root@server1 ~]# service named stop
Stopping named: [ OK ]
[root@server1 ~]#
10.1.3 再次查看director1上的HA集羣信息，如下：
（可以看出在director1顯示了錯誤的的HA的信息，此時real-server-1服務器也不能正常工作，但是在director1上無法發現）
[root@director1 ~]# ifconfig eth0:0
eth0:0 Link encap:Ethernet HWaddr 00:0C:29:66:E1:DA
inet addr:192.168.2.133 Bcast:192.168.2.143 Mask:255.255.255.240
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:19 Base address:0x2000
[root@director1 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
UDP 192.168.2.133:53 rr
-> 192.168.2.131:53 Route 1 0 97
-> 192.168.2.132:53 Route 1 0 97
TCP 192.168.2.133:53 rr
-> 192.168.2.131:53 Route 1 0 0
-> 192.168.2.132:53 Route 1 0 0
TCP 192.168.2.133:80 rr
-> 192.168.2.132:80 Route 1 0 0
-> 192.168.2.131:80 Route 1 0 0
10.1.4 客戶端不斷刷新網頁，而且只顯示如下網頁，且反應緩慢：
（說明：real-server-1服務器已經出現故障）
10.1.5 再次查看director1上的HA集羣信息，如下：
[root@director1 ~]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
UDP 192.168.2.133:53 rr
-> 192.168.2.131:53 Route 1 0 113
-> 192.168.2.132:53 Route 1 0 114
TCP 192.168.2.133:53 rr
-> 192.168.2.131:53 Route 1 0 0
-> 192.168.2.132:53 Route 1 0 0
TCP 192.168.2.133:80 rr
-> 192.168.2.132:80 Route 1 0 16
-> 192.168.2.131:80 Route 1 0 17
（說明：director1依然認爲real-server-1正常工作，並且不斷調度請求給real-server-1，此時已經出現大問題了）
此時的解決方法是：使director能夠知道real-server的工作情況！
10.2 解決web故障問題
10.2.1 在director1上安裝配置heartbeat-ldirectord
[root@director1 ~]# cd HA/
[root@director1 HA]# ls
heartbeat-2.1.4-9.el5.i386.rpm
heartbeat-ldirectord-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
[root@director1 HA]# yum localinstall heartbeat-ldirectord-2.1.4-9.el5.i386.rpm –nogpgcheck –y
[root@director1 HA]# cp /usr/share/doc/heartbeat-ldirectord-2.1.4/ldirectord.cf /etc/ha.d
[root@director1 HA]# cd /etc/ha.d/
[root@director1 ha.d]# vim ldirectord.cf
21 quiescent=yes
24 virtual=192.168.2.133:80
25 real=192.168.2.131:80 gate
26 real=192.168.2.132:80 gate
27 service=http
28 request=".test.html"
29 receive="ok"
30 virtualhost=www.japan.com
31 scheduler=rr
34 protocol=tcp
[root@director1 ha.d]# vim haresources
46 director1.japan.com 192.168.2.133 ldirectord::ldirectord.cf
[root@director1 ha.d]# service heartbeat restart
Stopping High-Availability services:
[ OK ]
Waiting to allow resource takeover to complete:
[ OK ]
Starting High-Availability services:
2012/04/04_11:25:46 INFO: Resource is stopped
[ OK ]
10.2.2 在director2上安裝配置heartbeat-ldirectord
[root@director2 ~]# cd HA/
[root@director2 HA]# ls
heartbeat-2.1.4-9.el5.i386.rpm
heartbeat-ldirectord-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
[root@director2 HA]# yum localinstall heartbeat-ldirectord-2.1.4-9.el5.i386.rpm –nogpgcheck –y
[root@director2 HA]# cp /usr/share/doc/heartbeat-ldirectord-2.1.4/ldirectord.cf /etc/ha.d
[root@director2 HA]# cd /etc/ha.d/
[root@director2 ha.d]# vim ldirectord.cf
21 quiescent=yes
24 virtual=192.168.2.133:80
25 real=192.168.2.131:80 gate
26 real=192.168.2.132:80 gate
27 service=http
28 request=".test.html"
29 receive="ok"
30 virtualhost=www.japan.com
31 scheduler=rr
34 protocol=tcp
[root@director2 ha.d]# vim haresources
46 director1.japan.com 192.168.2.133 ldirectord::ldirectord.cf
[root@director2 ha.d]# service heartbeat restart
Stopping High-Availability services:
[ OK ]
Waiting to allow resource takeover to complete:
[ OK ]
Starting High-Availability services:
2012/04/04_11:25:53 INFO: Resource is stopped
[ OK ]
10.2.3 此時，查看director1上的HA集羣信息，如下：
[root@director1 ha.d]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.2.133:80 rr
-> 192.168.2.132:80 Route 0 0 0
-> 192.168.2.131:80 Route 0 0 0
（由於在/etc/ha.d/ldirectord.cf中21行存在 quiescent=yes，故此處http的權重爲0，即此時不提供服務）
#修改/etc/ha.d/ldirectord.cf中21行爲 quiescent=no，會自動加載
[root@director1 ha.d]# vim ldirectord.cf
21 quiescent=no
[root@director2 ha.d]# vim ldirectord.cf
21 quiescent=no
#並再次查看director1上的HA集羣信息
[root@director1 ha.d]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.2.133:80 rr
[root@director1 ha.d]#
（由於在/etc/ha.d/ldirectord.cf中21行存在 quiescent=no，故此處http的記錄爲空）
10.2.4 此時，real-server-1上添加以下信息：
[root@server1 ~]# echo "ok" >> /var/www/html/.test.html
查看director1上的HA集羣信息，如下：
[root@director1 ha.d]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.2.133:80 rr
-> 192.168.2.131:80 Route 1 0 0
[root@director1 ha.d]#
此時，real-server-2上添加以下信息：
[root@server2 ~]# echo "ok" >> /var/www/html/.test.html
查看director1上的HA集羣信息，如下：
[root@director1 ha.d]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.2.133:80 rr
-> 192.168.2.132:80 Route 1 0 0
-> 192.168.2.131:80 Route 1 0 0
[root@director1 ha.d]#
10.2.5 此時，在real-server-1上停止httpd服務，出現以下信息：
[root@server1 ~]# service httpd stop
Stopping httpd: [ OK ]
查看director1上的HA集羣信息，如下
[root@server1 ~]#
[root@director1 ha.d]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.2.133:80 rr
-> 192.168.2.132:80 Route 1 0 0
在real-server-1上和real-server-2上停止httpd服務，出現以下信息：
[root@server1 ~]# service httpd stop
Stopping httpd: [ OK ]
[root@server1 ~]#
[root@server2 ~]# service httpd stop
Stopping httpd: [ OK ]
[root@server2 ~]#
查看director1上的HA集羣信息，如下
[root@director1 ha.d]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.2.133:80 rr
10.2.6 在real-server-1上和real-server-2上啓動httpd服務，恢復正常情況
[root@server1 ~]# service httpd start
Starting httpd: httpd: apr_sockaddr_info_get() failed for server1.japan.com
httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
[ OK ]
[root@server1 ~]#
[root@server2 ~]# service httpd start
Starting httpd: httpd: apr_sockaddr_info_get() failed for server2.japan.com
httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
[ OK ]
[root@server2 ~]#
查看director1上的HA集羣信息，如下
[root@director1 ha.d]# ipvsadm -ln
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP 192.168.2.133:80 rr
-> 192.168.2.131:80 Route 1 0 0
-> 192.168.2.132:80 Route 1 0 0
至此在linux下搭建HA和LB集羣成功！！！
附錄：stonith簡單測試(羣集分裂解決方案)
安裝相關軟件包：（我在前面已經安裝了，所以這裏就不安裝了）
[root@director1 ~]# cd HA/
[root@director1 HA]# ls
heartbeat-pils-2.1.4-10.el5.i386.rpm
heartbeat-stonith-2.1.4-10.el5.i386.rpm
[root@director2 ~]# cd HA/
[root@director2 HA]# ls
heartbeat-pils-2.1.4-10.el5.i386.rpm
heartbeat-stonith-2.1.4-10.el5.i386.rpm
#查看當前支持Stonith設備清單的命令：
[root@director1 ~]# /usr/sbin/stonith -L
apcmaster
apcmastersnmp
apcsmart
baytech
bladehpi
cyclades
…
ibmhmc
meatware
null
nw_rpc100s
rcd_serial
rps10
ssh
suicide
wti_nps
[root@director2 ~]# /usr/sbin/stonith -L
apcmaster
apcmastersnmp
apcsmart
baytech
bladehpi
cyclades
…
ibmhmc
meatware
null
nw_rpc100s
rcd_serial
rps10
ssh
suicide
wti_nps
如果尚未購買STONITH功能所支援的硬件，但是想測試STONITH功能的話 ，可以使用虛擬的STONITH裝置進行試驗。可以使用文件編輯器打開主服務器上的/etc/ha.d/ha.cf
[root@director1 HA]# cd /etc/ha.d/
199 stonith_host director1.japan.com null director2.japan.com
[root@director1 HA]# cd /etc/ha.d/
199 stonith_host director2.japan.com null director1.japan.com
編輯完成後重啓heartbeat，以使新設定生效。
[root@director1 ha.d]# service heartbeat restart
Stopping High-Availability services:
[ OK ]
Waiting to allow resource takeover to complete:
[ OK ]
Starting High-Availability services:
2012/04/04_14:31:41 INFO: Resource is stopped
[ OK ]
[root@director1 ha.d]#
[root@director2 ha.d]# service heartbeat restart
Stopping High-Availability services:
[ OK ]
Waiting to allow resource takeover to complete:
[ OK ]
Starting High-Availability services:
2012/04/04_14:31:41 INFO: Resource is stopped
[ OK ]
[root@director2 ha.d]#
[root@director1 ha.d]# ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
UDP www.japan.com:domain rr
-> 192.168.2.131:domain Route 1 0 6
-> 192.168.2.132:domain Route 1 0 6
TCP www.japan.com:domain rr
-> 192.168.2.131:domain Route 1 0 0
-> 192.168.2.132:domain Route 1 0 0
TCP www.japan.com:http rr
-> 192.168.2.132:http Route 1 0 0
-> 192.168.2.131:http Route 1 0 0
然後在備份服務器上執行下面命令關閉網絡：
最後開啓主要服務器上的/var/log/ha-log記錄，搜尋STONITH字串，觀察STONITH功能的運作情形:會發現內有：
[root@director1 ~]# tail -f /var/log/messages
Apr 4 14:23:05 director1 heartbeat: [16454]: WARN: node director2.japan.com: is dead
Apr 4 14:23:05 director1 heartbeat: [16454]: info: Link director2.japan.com:eth1 dead.
Apr 4 14:23:05 director1 heartbeat: [16873]: info: Resetting node director2.japan.com with [NULL STONITH device] //使用STONITH裝置將備份服務器關機
Apr 4 14:23:05 director1 heartbeat: [16873]: info: glib: Host null-reset: director2.japan.com
Apr 4 14:23:05 director1 heartbeat: [16873]: info: node director2.japan.com now reset.
//備份服務器已經關機
Apr 4 14:23:05 director1 heartbeat: [16454]: info: Managed STONITH director2.japan.com process 16873 exited with return code 0.
《完》
--xjzhujunjie
--2012/05/05