[MarkLogic Dev General] Replication

Tue Sep 27 06:09:54 PDT 2011

When you say "the same data center"... do you think that servers in separate
data centers with a gigabit connection, satisfy this suggestion?

thank you for your help,

-Robert Nam

If they are in the same data center, it would be simpler to put them in the
same cluster and use local-disk failover to maintain the replica copy. You'd
need at least 3 machines, but both failover between the master/replica and
subsequent recovery would be automatic.

Wayne.

On 09/23/2011 12:36 PM, Michael Blakeley wrote:

I assume you are asking about flexible replication?

If so, I think you'll be fine up until that last sentence. Almost all
flex-rep
state is kept on the master, so the state is lost if the master is lost.
From
the ex-slave new master's point of view, the ex-master will be a brand new
slave
with no history. All existing assets will be replicated.

-- Mike

On 23 Sep 2011, at 11:50 , Robert Nam wrote:

Summary: We have a two MarkLogic server configuration. One is active/master
replicating
to the slave until it is made “offline” because of a failure or maintenance.
In
this situation, the slave becomes master until it goes offline. Are there
any
issues with this configuration? What is the best way to configure the
replication between the two servers?

Description: Our configuration consists of two MarkLogic servers. Only one
server at any
given time will be active (Master) and connected to the Internet by a load
balancer. The Master server will replicate its database/s to the second
server
that is accessible by the Master but not connected to the Internet.

If the Master server is inoperable, the second server will be promoted to
Master
and connected to the Internet. Once the original Master server is functional
again, it will be considered the Slave and the current Master server will
replicate its database/s to this server. The desired result of the
replication
is for the new Master to only update/copy on the slave… new assets that were
modified on this server.

-Robert

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