Experimental environment:
Virtual machine ha1: 192.168.61.130
Virtual machine ha2: 192.168.61.132
vip:192.168.61.100
Experiment description:
ha1的 httpdServiceindex.html The content is set toha1
ha2ofhttpdServiceindex.html The content is set toha2
It is convenient to observe the effect when switching between the two hosts
Notes:
(a) .Times between nodes must be synchronized: usentpProtocol implementation;
Server/etc/ntp.confFor reference:
driftfile/var/lib /ntp/drift
restrict -6default kod nomodify notrap nopeer noquery
restrict127.0.0.1
restrict -6 ::1
restrict192.168.61.0 mask 255.255.255.0 nomodify
restrict 0.0.0.0mask 0.0.0.0 nomodify notrap noquery notrust
server127.127.1.0
fudge 127.127.1.0stratum 8
server220.130.158.71 prefer
server220.130.158.51
includefile/etc/ntp/crypto/pw
keys/etc/ntp/keys
Note: You must wait after setting the restart service10-15Try to sync again in minutes, command:ntpdata 192.168.61.130, Compare the time of the two machines with the synchronization command:data;ssh 192.168.61.130’data’
ha2 It is best to set a timed task every5Minute sync time:
crontab -e
*/5 * * * * / usr/sbin/ntpdata 192.168.61.130
(b). Nodes need to communicate with each other through host names, and the host must be resolved toIPAddress;
(1)It is recommended to use the name resolution functionhostsfile to achieve; span>
(2) The name used in the communication must be consistent with the node name: “uname -n” command, or< /span>“hostname” The displayed names are consistent;
(3) .Establish rootUsers can authenticate based on the key;
# ssh-keygen -t rsa -P”
#ssh-copy-id -i /root/.ssh/id_rsa.pub root@HOSTNAME
(4) .Be sure to close SELINUX and empty iptables
< p style="margin-left:84px;"> Note: Defined as resources in the cluster service, they must not be automatically started after booting; because they will be controlled by crmManagement;
ha1Configuration
Install heartbeat V2
(a ). Install the epel source first, the system source does not have libnet
wget ftp://ftp.pbone.net/mirror/dl.iuscommunity.org/pub/ius/archive/Redhat/6/i386/epel-release-6-5.noarch.rpm< /p>
rpm -ivh epel-release-6-5.noarch. rpm
(b ). Install related packages:
yum install net-snmp-libs libnet PyXML
rpm -ivh heartbeat-2.1.4-12.el6.x86_64.rpm
heartbeat-pils-2.1.4-12.el6.x86_64.rpm
heartbeat-stonith-2.1.4-12.el6.x86_64.rpm
yum install httpd
(c) .Edit ha.cf file
vim / etc/ha.cf add content as follows:
Logfacility local0# The log uses the local0 setting in rsyslog
keepalive1 #monitoring frequency, every 1 second
deadtime3 #Death judgment time
warntime2 #Exception warning time
mcasteth0 225.0. 0.1 694 1 0 #Multicast address setting
auto_failbackon #automatically go online after repair
node ha1 #Node set置
node node ha2 #Node settings
ping 192.168.61.2 #third-party arbitration settings
(d). Edit the authkeys file
< p style="margin-left:28px;">auth 2
#1 crc
2 sha1HI! #The longer the key phrase, the more random the better
#3 md5Hello!
(e) EditharesourcesAdd:
ha1 192.168.61.100 httpd #Set the host name of the main service ,VIP, service3A resource
(f)Editindex.htmlHome
echo “ha1″> /var/www /html/index.html
ha2Configuration strong>
Install heartbeat V2
(a). Install epel source first, system source does not have libnet p>
wget ftp://ftp.pbone.net/mirror/dl .iuscommunity.org/pub/ius/archive/Redhat/6/i386/epel-release-6-5.noarch.rpm
< span style="font-family:'宋体';font-size:12px;"> rpm -ivh epel-release-6-5.noarch.rpm
(b). Install related packages:
yum install net-snmp-libs libnet PyXML
rpm-ivh heartbeat-2.1.4-12.el6.x86_64.rpm
heartbeat-pils-2.1.4- 12.el6.x86_64.rpm
Heartbeat -stonith-2.1.4-12.el6.x86_64.rpm
yum install httpd
(c)copyha1的ha.cf、haresources、authkeys
scp192.168.61.130: /etc/ha.d/{ha.cf,haresour ces,authkeys} /etc/ha.d/
(d)Editindex.htmlHome
echo “ha2″> /var/www /html/index.html
(e)Add timed school hours task,every5Update time every minute p>
crontab-e
*/5* * * * /usr/sbin/ntpdata 192.168.61.130
Start the two machines separatelyheartbeatService
service heartbeat start p>
Use other hosts to accesshttp://192.168.61.100/index.html, Closeha1,ha2One of them, refresh the page and you can see the content of the webpageha1、ha2show in turn
Show. Useifconfig to check the working host, you can findvip Already configured oneth0:0on