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Full Discussion: One service, two nodes, HA
Top Forums UNIX for Dummies Questions & Answers One service, two nodes, HA Post 302580035 by Flomaster on Wednesday 7th of December 2011 09:00:09 AM
Old 12-07-2011
Debian One service, two nodes, HA

Hi all. I have two nodes taken different places. They are connected together on a network. So, i have a service, it works on one of nodes and when the node is unavailable the service should will be launched on other node.

Solution: rhel cluster, keepalive, hearbeat...may be Carp

but what if the channel in between nodes will break and servers remain to work...split brain?

And looking ahead may be will need to transfer service but with different addresses(same config but diff network ip)

If somebody worked with similar tasks prompt where to look please!!Smilie
 

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clinfo(1M)						  System Administration Commands						clinfo(1M)

NAME
clinfo - display cluster information SYNOPSIS
clinfo [-nh] DESCRIPTION
The clinfo command displays cluster configuration information about the node from which the command is executed. Without arguments, clinfo returns an exit status of 0 if the node is configured and booted as part of a cluster. Otherwise, clinfo returns an exit status of 1. OPTIONS
The following options are supported: -h Displays the highest node number allowed to be configured. This is different from the maximum number of nodes supported in a given cluster. The current highest configured node number can change immediately after the command returns since new nodes can be dynam- ically added to a running cluster. For example, clinfo -h might return 64, meaning that the highest number you can use to identify a node is 64. See the Sun Cluster 3.0 System Administration Guide for a description of utilities you can use to determine the number of nodes in a cluster. -n Prints the number of the node from which clinfo is executed. EXIT STATUS
The following exit values are returned: 0 Successful completion. 1 An error occurred. This is usually because the node is not configured or booted as part of a cluster. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) SunOS 5.10 12 Mar 2002 clinfo(1M)
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