High-availability lamp with heartbeat 2.X

First, the test environment

Host Name	IP Address	Role
Node1.example.com	192.168.86.185	Node1
Node2.example.com	192.168.86.186	Node2
Fs.example.com	192.168.86.111	Fileserver

Two, configure three server time synchronization and modify crontab to synchronize with NTP server automatically

Crontab-e

*/2 * * * */usr/sbin/ntpdate cn.pool.ntp.org

Third, edit/etc/hosts file configuration ssh Trust

1.vim/etc/hosts

192.168.86.185 node1.example.com node1192.168.86.186 node2.example.com node2192.168.86.111 fs.example.com Fs

Scp/etc/hosts 192.168.86.186:/etc/scp/etc/hosts 192.168.86.111:/etc/

2. Configure the SSH certificate

Run Ssh-keygen--Ssh-copyid node2 on each server

Four, prepare for NFS Server

1. Mount after adding a new disk partition

Fdisk/dev/sdbmkfs.ext4/dev/sdb1mkdir/mydata; Mount/dev/sdb1/mydata

2. Edit the/etc/exports file

Vim/etc/exports

/mydata 192.168.86.0/24 (Rw,no_root_squash)

Start the NFS service

Service NFS Start

Establish the/mydata directory on the Node1,node2 node and perform a test mount

Mkdir/mydata; Mount-t NFS Fs:/mydata/mydata; Mkdir/mydata/{db,webdoc}

Five, install HEARTBEAT+CRM+HTTPD+MARIADB on the Node1,node2 node

Will download the heartbeat-gui-2.1.4-12.el6.x86_64.rpm heartbeat-stonith-2.1.4-12.el6.x86_64.rpm heartbeat-2.1.4-12.el6.x86_ 64.rpm heartbeat-stonith-2.1.4-12.el6.x86_64.rpm for installation

It is recommended that you use the Yum Localinstall installation to resolve dependencies, or you can install heartbeat after the yum remove heartbeat resolves the dependencies after installing it with the Yum install.

httpd with Yum installation

Yum Install httpd PHP php-mysql-y

MARIADB with a compiled tarball installation

Tar xvf mariadb-5.5.46-linux-x86_64.tar.gz-c/usr/local; Ln-s/usr/local/mariadb-5.5.46/mysql

1.mysql Configuration

Groupadd-r-G mysqluseradd-r-G MySQL mysqlchown-r root.mysql/usr/local/mysql

Copy MySQL configuration file

Cp/usr/local/mysql/support-fils/my-medium.cnf/etc/my.cnf

Editing a configuration file

Vim/etc/my.cnf

DataDir =/mydata/db Specify the database location

Innodb_file_per_table = on Specifies how the InnoDB table space is stored

Skip_name_resolve = on skips domain name resolution

Copy startup script

Cp/usr/local/mysql/mysql.server/etc/init.d/mysqld; chmod +x/etc/init.d/mysqld

Initializing the database

/usr/local/mysql/scripts/mysql_install_db--basedir=/usr/local/mysql--user=mysql

Test start MySQL

Service mysqld Start

Build WordPress library, and give WordPress user authorization

MariaDB [(None)]> CREATE database WordPress; Query OK, 1 row affected (0.01 sec) MariaDB [(none)]> grant all privileges on wordpress.* to ' WordPress ' @ ' 192.168.86.% ' Identified by ' WordPress '; Query OK, 0 rows affected (0.01 sec) MariaDB [(none)]> flush privileges; Query OK, 0 rows affected (0.01 sec)

Turn off MySQL after normal startup

Service Mysqld Stop

2.HTTPD Configuration

Edit httpd configuration file

Vim/etc/httpd/conf/httpd.conf

DocumentRoot "/mydata/webdoc"

Six, configure Heartbeat

CP/USR/SHARE/DOC/HEARTBEAT-2.1.4/{AUTHKEYS,HA.CF}/etc/ha.d/

1. Edit Authkeys

First, you need to generate a random number for the most

OpenSSL rand-base64 10abb7qpdgzvxdravim/etc/ha.d/authkeysauth 2#1 crc2 SHA1 Abb7qpdgzvxdra

Modify to generated random number

#3 MD5 hello!

Copy Authkeys to Node2

Scp/etc/ha.d/authkeys NODE2:/ETC/HA.D

2. Edit HA.CF

Vim/etc/ha.d/ha.cf

LogFile/var/log/ha-log turn on log function

Logfacilitylocal0

Udpport694 listening on UDP 694 port

Mcast eth0 225.0.0.1 694 1 0 Configure multicast address, TTL value

Auto_failback on repair auto turn back function on

Node node1.example.com defines two nodes respectively

Node node2.example.com

Ping 192.168.86.2 Pingnode Device

CRM on open Heartbeat 2.x CRM

Copy ha.cf to Node2

SCP/ETC/HA.D/HA.CF node2:/etc/ha.d/

Modify Hacluster Password

echo linuxha|passwd Hacluster--stdin

Seven. Configuring cluster resources

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Adding VIP,STORE,DB,HTTPD resources within a group resource

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Add VIP

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Add Store

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Start Lamp Resource

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Eight, install WordPress

Unzip WordPress to/mydata/webdoc

[Email protected] src]# cp-r wordpress/*/mydata/webdoc

Browser input HA cluster IP address

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Test resource Migration

Stop Heartbeat on the Node2

Service Heartbeat Stop

Re-visit the page test is normal 650) this.width=650; "Src=" http://s3.51cto.com/wyfs02/M02/74/CF/wKiom1Ypv1Oio9cuAAKPDIyB0us233.jpg " Title= "Qq20151023130150.png" alt= "wkiom1ypv1oio9cuaakpdiyb0us233.jpg"/> test found that the resource has been successfully migrated to Node1, and the page will be accessed normally

Enable high-availability lamp with heartbeat 2.X