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Full Discussion: Echo/kill pgrep
Top Forums UNIX for Beginners Questions & Answers Echo/kill pgrep Post 303024591 by MuntyScrunt on Thursday 11th of October 2018 05:34:09 PM
Old 10-11-2018
Cluster vs Super
Hi there.

I'm currently playing around with a small cluster of mini boards running Debian. Or Raspbian to be precise. Each node is given a datafile and renders animation frames. This is as much a cluster as it c be, I'm using one as a header, I've written some scripts and code to automate certain tasks, but every node is totally isolated save it's wifi connection to the same network.

So I'm wondering what os' there are around that could use all these nodes as one. 12x4 cores could be fun to play around with, and may possibly save time as a lot of duplicated file checking would be avoided.

If I can get this working I'm prepared to sink a bit of cash into the project and add a load more nodes. So, what do you think my options would be?

Many thanks.
 

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LEARN ABOUT DEBIAN

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)
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