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| ShaoLin HA Cluster 1.0 Installation Manual and Operations Guide | ||
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| Prev | Chapter 5. Configuring the clusters with Cluster Configurator Webmin interface | Next |
If you are setting up the cluster configurations for the first time (i.e. no configuration files), the Cluster Configurator will prompt you to start the Cluster Setup Wizard. Click to the provided link to enter the setup wizard. The setup wizard will guide you through the configuration process in a step by step manner.
You must first setup the global options of the clusters. It is save to use the default values and leave them unchanged. For more detail information on setting up global options, see Section 5.2 and Section A.1.
Heartbeat channels are for cluster communications and monitoring. Selecting a device as a heartbeat channel means heartbeat messages are passed through that device. The selected device will also be automatically monitored for failures. By default, all Ethernet devices are used, you may uncheck those checkbox to disable them. It is strongly to use all Ethernet devices for heartbeat to ensure all NIC's get monitored. Selecting Is Critical will cause the system to failover if that device has error. The IP address of the standby server is optional. It is needed if you want to use remote monitoring features (i.e. connect the standby server with Cluster Manager on the active server). The IP address is automatically suggested by the wizard. You can also use serial devices for heartbeat, you will require to connect a null modem cable to use it. You may change heartbeat detail settings after the wizard, see Section 5.3 for more details.
The password of the cluster is used by the authentication which is used by Cluster Manager and the Cluster Daemon, both remotely and on the console.
After you have finish editing the configuration files, it is necessary to regenerate the boot images (i.e. the initrd image file) using the newly updated information. So that the new configurations get loaded by the next boot up by the standby cluster. If your system has multiple kernel versions, the wizard will prompt you for the desired kernel version which you might want to use.
After the initrd image is generated, the wizard will prompt you to edit your boot loader configuration file for saving the new boot entry which is added by the wizard. By default, the wizard will generate two entries for your boot selection. One is the cluster enabled boot image, another entry contains an extra kernel command line argument slha=test to trigger the test mode of the cluster. The default is test mode. You may change this later by editing your boot loader configuration files.
