Building Linux cluster for mechanical engineering software Post: 302918897

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Special Forums UNIX and Linux Applications High Performance Computing Building Linux cluster for mechanical engineering software Post 302918897 by biro on Friday 26th of September 2014 04:51:01 AM

09-26-2014

Registered User

This answer I've been waiting, but please do not get me wrong, I'm thankful for that.

Of course I'm a beginner in this topic, because of that I try to carry Information about it.
I'm aware that there is no general statement to give, when I asked "how to build a cluster".
It don't have to be a cluster for thousands of people with just more than 500 nodes, just for institut (15 - 20 user). But before it can be built, used .... Someone have to inform. And this is my part. I'm searching for sources to inform, unfortunately there are less sources, respectively I don't find them.

My intention is to begin at point zero of the hpc-topic and then to make gradually steps to the wright direction. For that I have hardware to test to build a "little" cluster to get first experience.

The goal of the entire project is to decide, whether to built the needed cluster on my own. As always, the point is to save costs.

biro

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votequorum_leaving

VOTEQUORUM_LEAVING(3)				    Corosync Cluster Engine Programmer's Manual 			     VOTEQUORUM_LEAVING(3)

NAME

       votequorum_leaving - Tell other nodes that we are leaving the cluster

SYNOPSIS

       #include <corosync/votequorum.h>

       int votequorum_leaving(votequorum_handle_t handle);

DESCRIPTION

       The votequorum_leaving function is used to tell the other nodes in the cluster that this node is leaving. They will (when the node actually
       leaves) reduce quorum to keep the cluster running without this node.

       This function should only be called if it is known that the node is being shut down for a known reason and could be out of the cluster  for
       an extended period of time.

       Normal behaviour is for the cluster to reduce the total number of votes, but NOT expected_votes when a node leave the cluster, so the clus-
       ter could become inquorate. This is correct behaviour and is ther eto prevent split-brain.

       Do NOT call this function unless you know what you are doing.

RETURN VALUE

       This call returns the CS_OK value if successful, otherwise an error is returned.

ERRORS

       The errors are undocumented.

SEE ALSO

       votequorum_overview(8), votequorum_initialize(3), votequorum_finalize(3), votequorum_dispatch(3), votequorum_fd_get(3),

corosync Man Page						    2009-01-26						     VOTEQUORUM_LEAVING(3)