HeartbeatV2 haresources Simple Implementation httpd service high Availability

Lab Environment:

Virtual Machine ha1:192.168.61.130

Virtual Machine ha2:192.168.61.132

vip:192.168.61.100

Experiment Description:

ha1 httpd service index.html content is set to HA1

HA2 httpd service index.html content is set to HA2

Two-host switch operation to facilitate observation of the effect

Precautions:

(a) The time between nodes must be synchronized: implemented using NTP protocol;

Service-side /etc/ntp.conf for 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: Be sure to wait after setting up the restart service 10-15 minutes before attempting to synchronize, command: Ntpdata 192.168.61.130, compare two machine time synchronization commands: data;ssh 192.168.61.130 ' data '

HA2 It is better to set a timed task, each 5 minutes sync Time:

Crontab-e

*/5 * * * */usr/sbin/ntpdata 192.168.61.130

(b) the nodes need to communicate with each other through the host name and must parse the host to IP address;

(1) The proposed name resolution function is implemented using the hosts file;

(2) the name used in the communication must be consistent withthe name of the node: "uname-n" command, or "hostname" The name shown is consistent;

(3) To establish the root user between nodes can be based on key authentication;

# ssh-keygen-t Rsa-p '

#ssh-copy-id-i/root/.ssh/id_rsa.pub [email protected]

(4) Make sure that SELinux is closed and iptables emptied.

Note: The definition becomes a resource in the Cluster service and must not boot automatically; CRM management;

HA1 Configuration

Installing heartbeat V2

(a). Install the Epel source first, the system source is not libnet

wget ftp://ftp.pbone.net/mirror/dl.iuscommunity.org/pub/ius/archive/Redhat/6/i386/epel-release-6-5.noarch.rpm

RPM-IVH epel-release-6-5.noarch.rpm

(b). Install the relevant package:

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 the Ha.cf file

VIM/ETC/HA.CF Add the following:

Logfacility local0# log using local0 settings in Rsyslog

Keepalive1 #监听频率, every 1 seconds

Deadtime3 #死亡判断时间

Warntime2 #异常警告时间

Mcasteth0 225.0.0.1 694 1 0 #组播地址设定

Auto_failbackon #修复后自动上线

Node HA1 #节点设置

Node HA2 #节点设置

Ping 192.168.61.2 #第三方仲裁设定

(d). Edit the Authkeys file

Auth 2

#1 CRC

2 sha1hi! #密钥短语越长越随机越好

#3 md5hello!

(E) edit haresources add:

HA1 192.168.61.100 httpd # Set Master service hostname,VIP, service 3 Resources

(f) edit index.html Home

echo "HA1" >/var/www/html/index.html

HA2 Configuration

Installing Heartbeat V2

(a). Install the Epel source first, the system source is not libnet

wget ftp://ftp.pbone.net/mirror/dl.iuscommunity.org/pub/ius/archive/Redhat/6/i386/epel-release-6-5.noarch.rpm

RPM-IVH epel-release-6-5.noarch.rpm

(b). Install the relevant package:

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) copy ha1 's ha.cf,haresources,Authkeys

Scp192.168.61.130:/etc/ha.d/{ha.cf,haresources,authkeys}/etc/ha.d/

(d) edit index.html Home

echo "HA2" >/var/www/html/index.html

(e) add time-lapse tasks , updated every 5 minutes

Crontab-e

*/5* * * */usr/sbin/ntpdata 192.168.61.130

start the two-machine heartbeat service separately

Service Heartbeat Start

use other hosts to access the http://192.168.61.100/index.html, close ha1, HA2 One of them, refresh the page to see the contents of the page HA1 ,HA2 take turns to display

display. Viewing a working host with Ifconfig, you can see that the VIP is already configured on eth0:0

HeartbeatV2 haresources Simple Implementation httpd service high Availability