Heartbeat simple high-availability cluster setup under Linux

The Heartbeat project is an integral part of the LINUX-HA project, which implements a highly available cluster system. With heartbeat we can implement dual-machine hot-standby to achieve the continuity of service.

High-availability cluster construction based on heartbeat simple Web service under Linux

First of all, the planning of two hosts as heartbeat of the dual-machine hot standby, named node1.lvni.cc (master); node2.lvni.cc,

Node1 's eth0ip:192.168.157.148 Vip eth0:0:192.168.157.149

Node2 's eth0ip:192.168.157.150

When planning is complete, prepare for the two node

1, change the host name, so that the two hosts can parse each other

Execute command hostname node1.lvni.cc/node2.lvni.cc (temporary) on both hosts

Modify the primary configuration file to be modified (permanent)

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Note Uname-n (be sure to sync)

2. Generate the key through SSH, build up the trust of the machine

Generate a key file on two nodes to copy to the other node separately

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Free login after completion of execution

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3. Synchronize the two nodes with time

The NTP server can be easily built on the Node1 node, and Node2 can be synchronized by crontab every five minutes.

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After everything is ready, install heartbeat

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To resolve dependencies, install with Yum

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Installation is complete.

Configuring the Heartbeat

Copy the Authkey ha.cf haresources file under the/usr/share/doc/heartbeat-2.1.4 directory to the/ETC/HA.D directory

Note Authkey permissions are 600 other permissions are not changed

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Configure when you are done

Authkey three kinds of encryption

Here for a simple CRC encryption

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HA.CF file, primary definition node

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Important: The configuration of the Haresources resource file.

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Defines the virtual IP httpd

The configuration of the main two nodes is exactly the same!

After completion, install the HTTPD service on both nodes

First Test the HTTPD service

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When you are done, start heartbeat

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View Node IP

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Perform initial testing

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Now standby stop node1 with heartbeat script

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View site

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View IP

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Success! And you can view the log information through Tail-f/var/log/message.

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Heartbeat simple high-availability cluster setup under Linux