HeartBeatv2 Haresources simple implementation HTTPD service high available

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;