How and how to unite servers into a cluster?

Question

Clustering

There are three servers - 8 cores, 16GB of memory, 2TB disks on each.
Would you like to unite them somehow so that they look like one real powerful server?

Preferably with Linux.

Answer 1

Look
en.wikipedia.org/wiki/Kerrighed
Openmosix and openSSi don't look. Haven't been supported for a long time.

Answer 2

There is a simple solution for connecting disks over a network - www.gluster.org/
server1# gluster peer probe server2
server1# gluster peer probe server3
server1# gluster volume create STORAGE replica 3 transport tcp \
         server1:/source/dir server2:/source/dir server3:/source/dir
server1# mount -t glusterfs server1:/STORAGE /dest/dir


Answer 3

ubuntu cloud?

Answer 4

And with the help of what (physically) will you unite them?

Answer 5

Most likely via ethernet.
Servers are in the DC.
Perhaps I should explain myself a little: the issue of combining the power of servers has been worrying for a long time. But earlier it was all more in the plane of “interesting, but not necessary”, but now it has become “very necessary”.
Started googling. But either my Google is wrong, or something ... I only find articles on building failover clusters.
PS I know about VMWare ESXi. But the thing is rather capricious for hardware, and I would like to know what else exists.

Answer 6

I think it's best to do clustering at the application level.
If you make an application instance a virtual machine, then you get a highlight.
We are now testing this approach based on openvz.