[Gluster-users] standby-server

[Daniel Müller]

What ist he reason about a "spare server" ? With gluster just replicate to
the real status all the time!?
Or just do geo replication to a non gluster machine!?

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EDV Daniel Müller

Leitung EDV
Tropenklinik Paul-Lechler-Krankenhaus
Paul-Lechler-Str. 24
72076 Tübingen

Tel.: 07071/206-463, Fax: 07071/206-499
eMail: mueller at tropenklinik.de
Internet: www.tropenklinik.de
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-----Ursprüngliche Nachricht-----
Von: gluster-users-bounces at gluster.org
[mailto:gluster-users-bounces at gluster.org] Im Auftrag von Ted Miller
Gesendet: Freitag, 16. August 2013 18:29
An: gluster-users at gluster.org
Betreff: [Gluster-users] standby-server

I am looking at glusterfs for a HA application w/o local tech support (don't
ask, third-world country, techs are hard to find).

My current plan is to do a replica-4 + hot spare server.  Of the four in-use
bricks, two will be on "servers" and the other two will be on a "client" 
machine and a "hot-backup" client machine.  No striping, all content on each
local machine, each machine using its own disk for all reading.

Part of my plan is to have a cold-spare server in the rack, not powered on.

(This server will also be a cold spare for another server).

I am wondering if this would be a viable way to set up this configuration:

Set up glusterfs as replica-5.

1. server1
2. server2
3. client
4. client-standby
5. server-spare

Initialize and set up glusterfs with all 5 bricks in the system (no file
content).
Install system at client site, and test with all 5 bricks in system.

Shut down spare server.

Once a month, power up spare server, run full heal, shut down.
Power up server-spare for any software updates.

If server1 or server2 dies (or needs maintenance), tell them to power up
server-spare, and let it heal.

It seems to me that this would be easier than setting up a replica-4 system
and then jumping through all the hoops to replace a server from scratch.

Comments, reactions, pot-shots welcome.
Ted Miller

--
"He is no fool who gives what he cannot keep, to gain what he cannot lose."
- - Jim Elliot For more information about Jim Elliot and his unusual life,
see http://www.christianliteratureandliving.com/march2003/carolyn.html.

Ted Miller
Design Engineer
HCJB Global Technology Center
2830 South 17th St
Elkhart, IN  46517
574--970-4272 my desk
574--970-4252 receptionist


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