On 18/06/14 02:20 PM, YB Tan Sri Dato Sri' Adli a.k.a Dell wrote:
Hi,
The linux clustering will be only working perfectly if you run the linux
operating systems between nodes. Allow root ssh persistent connection on
top of same specifications hardware platform.
To perform test or proof of concept, you may allow to run and configure
between two nodes.
The databases for clustering will be configure right after the two nodes
linux operating systems run with persistent root access ssh connection.
Sent from Yahoo Mail for iPhone <https://overview.mail.yahoo.com?.src=iOS>
You have said this a couple times now, and I am not sure why. There is
no need to have persistent, root access SSH between nodes. It's helpful
in some cases, sure, but certainly not required. Corosync, which
provides cluster membership and communication, handles internode traffic
itself, on it's own TCP port (using multicast by default or unicast if
configured).
There is also nothing restricting you to two nodes. It's a good
configuration, and one I use personally, but there are many 3+ node
clusters out there.
As for a database cluster, that would depend entirely on which database
you are using and whether you are using tools specific for that DB or a
more generic HA stack like corosync + pacemaker.
Cheers
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