Problem in RedHat Cluster Node while network Failure or in Hang mode


 
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Operating Systems Linux Red Hat Problem in RedHat Cluster Node while network Failure or in Hang mode
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Old 05-06-2013
Hammer & Screwdriver Problem in RedHat Cluster Node while network Failure or in Hang mode

Hi,

We are having many RedHat linux Server with Cluster facility for availability of service like HTTPD / MySQL.

We face some issue while some issue related to power disturbance / fluctuation or Network failure. There is two Cluster Node configured in server architecture but suppose there will be some issue related to power or network on "Node-01" then the fencing is dropped and whatever the service is configured in "/etc/cluster.conf" but it will not start from "Node-02".

And we can see in log into "/var/log/messages" as "there is fencing connection breaking error and trying to connect fencing on both server" but as the network is failure then we need to restart both server then it will initialize in available mode and cluster is start normally.

Also we cross check it to understand it's function after stopping "rgmanager" service then it will work properly.

Can any one give proper understandable about it's functionality? Which Cluster is better "RedHat Cluster or HA-Cluster (High-Availability - Third Party)" ?

Thanks & Regards,
Hiren Mistry

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scsetup(1M)						  System Administration Commands					       scsetup(1M)

NAME
scsetup - interactive cluster configuration tool SYNOPSIS
scsetup [-f logfile] DESCRIPTION
Note - Beginning with the Sun Cluster 3.2 release, Sun Cluster software includes an object-oriented command set. Although Sun Cluster software still supports the original command set, Sun Cluster procedural documentation uses only the object-oriented command set. For more infor- mation about the object-oriented command set, see the Intro(1CL) man page. The scsetup command provides the following configuration capabilities, depending on what state the cluster is in when you issue the com- mand: o When you run the scsetup command at post-installation time, the command performs initial setup tasks, such as configuring quorum devices and resetting the installmode property. If you did not use automatic quorum configuration when you created the cluster, run the scsetup command immediately after the cluster is installed. Ensure that all nodes have joined the cluster before you run the scsetup command and reset the installmode property. If you used automatic quorum configuration when you created the cluster, you do not need to run the scsetup command after clus- ter installation. The automatic quorum configuration feature also resets the installmode property of the cluster. o When you run the command during normal cluster operation, the scsetup command provides a menu-driven utility. You can use this utility to perform most ongoing cluster-administration tasks. o When you issue the command from a node that is in noncluster mode, the scsetup utility provides a menu-driven utility for chang- ing and displaying the private IP address range. You must reboot all nodes into noncluster mode before you start this form of the scsetup utility. You can issue the scsetup command from any node in the cluster. You can use this command only in the global zone. OPTIONS
The following options are supported: -f logfile Specifies the name of a log file to which commands can be logged. If you specify this option, most command sets that the scsetup utility generates are run and logged, or only logged, depending on user responses. ATTRIBUTES
See attributes(5) for descriptions of the following attributes. +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsczu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
Intro(1CL), cltelemetryattribute(1CL), cldevicegroup(1CL), clnode(1CL), clquorum(1CL), clreslogicalhostname(1CL), clresourcegroup(1CL), clresourcetype(1CL), clressharedaddress(1CL), cluster(1CL), Sun Cluster 3.2 18 Jul 2006 scsetup(1M)