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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scha_resourcetype_get(1HA)				       Sun Cluster Commands					scha_resourcetype_get(1HA)

NAME
scha_resourcetype_get - access resource type information SYNOPSIS
scha_resourcetype_get -O optag -T type DESCRIPTION
The scha_resourcetype_get command accesses information about a resource type that is registered with the Resource Group Manager (RGM). Use this command in shell script implementations of the callback methods for resource types that represent services that are controlled by the RGM. This command provides the same information as the scha_resourcetype_get(3HA) C function. Information is output by this command to the standard output (stdout) in formatted strings, as described in the scha_cmds(1HA) man page. Output is a string or several strings that are output on separate lines. You can store the output in shell variables. You can also parse the output by using the awk(1) command or other shell commands for further use by the script. You need solaris.cluster.resource.read RBAC authorization to use this command. See the rbac(5) man page. Authorized users can issue privileged Sun Cluster commands on the command line from the pfsh(1), pfcsh(1), or pfksh(1) profile shell. A profile shell is a special kind of shell that enables you to access privileged Sun Cluster commands that are assigned to the Sun Cluster Commands rights profile. A profile shell is launched when you run su(1M) to assume a role. You can also use pfexec(1) to issue privileged Sun Cluster commands. OPTIONS
The following options are supported: -O optag Indicates the information to be accessed. Note - optag options, such as API_VERSION and BOOT, are not case sensitive. You can use any combination of uppercase and lowercase letters when you specify optag options. The following optag values retrieve the corresponding resource type properties. The value of the named property of the resource's type is output. API_VERSION BOOT FAILOVER FINI INIT INIT_NODES INSTALLED_NODES IS_LOGICAL_HOSTNAME IS_SHARED_ADDRESS MONITOR_CHECK MONITOR_START MONITOR_STOP PKGLIST POSTNET_STOP PRENET_START RESOURCE_LIST RT_BASEDIR RT_DESCRIPTION RT_SYSTEM RT_VERSION SINGLE_INSTANCE START STOP UPDATE VALIDATE -T type Is the name of a resource type that is registered for use by the RGM cluster facility. EXIT STATUS
The following exit values are returned: 0 The command completed successfully. nonzero An error occurred. Failure error codes are described scha_calls(3HA). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscdev | +-----------------------------+-----------------------------+ |Interface Stability |Stable | +-----------------------------+-----------------------------+ SEE ALSO
awk(1), scha_cmds(1HA), scha_calls(3HA), scha_resourcetype_get(3HA), attributes(5), rt_properties(5) Sun Cluster 3.2 31 May 2006 scha_resourcetype_get(1HA)