Yes you can promote a slave to be master refer http://wiki.apache.org/solr/SolrReplication#enable.2BAC8-disable_master.2BAC8-slave_in_a_node
In AWS one can use an elastic IP(http://aws.amazon.com/articles/1346) to refer to the master and this can be assigned to slaves as they assume the role of master(in case of failure). All slaves will then refer to this new master and there will be no need to regenerate data. Automation of this maybe possible through CloudWatch alarm-actions. I don't know of any available example automation scripts. Cheers Akshay. On Wed, Aug 10, 2011 at 9:08 PM, Matt Shields <m...@mattshields.org> wrote: > If I were to build a master with multiple slaves, is it possible to promote > a slave to be the new master if the original master fails? Will all the > slaves pickup right where they left off, or any time the master fails will > we need to completely regenerate all the data? > > If this is possible, are there any examples of this being automated? > Especially on Win2k3. > > Matthew Shields > Owner > BeanTown Host - Web Hosting, Domain Names, Dedicated Servers, Colocation, > Managed Services > www.beantownhost.com > www.sysadminvalley.com > www.jeeprally.com > > > > On Mon, Aug 8, 2011 at 5:34 PM, <mboh...@yahoo.com> wrote: > > > Matthew, > > > > Here's another resource: > > > > > http://www.lucidimagination.com/blog/2010/02/01/solr-shines-through-the-cloud-lucidworks-solr-on-ec2/ > > > > > > Michael Bohlig > > Lucid Imagination > > > > > > > > ----- Original Message ---- > > From: Matt Shields <m...@mattshields.org> > > To: solr-user@lucene.apache.org > > Sent: Mon, August 8, 2011 2:03:20 PM > > Subject: Example Solr Config on EC2 > > > > I'm looking for some examples of how to setup Solr on EC2. The > > configuration I'm looking for would have multiple nodes for redundancy. > > I've tested in-house with a single master and slave with replication > > running in Tomcat on Windows Server 2003, but even if I have multiple > > slaves > > the single master is a single point of failure. Any suggestions or > example > > configurations? The project I'm working on is a .NET setup, so ideally > I'd > > like to keep this search cluster on Windows Server, even though I prefer > > Linux. > > > > Matthew Shields > > Owner > > BeanTown Host - Web Hosting, Domain Names, Dedicated Servers, Colocation, > > Managed Services > > www.beantownhost.com > > www.sysadminvalley.com > > www.jeeprally.com > > > > >
