Right, that's a good idea. Thanks! On 30 December 2012 17:41, Aloke Ghoshal <alghos...@gmail.com> wrote:
> Hi Marcin, > > Since you are thinking of this in the context of Amazon, I would suggest > taking a different route. Assign an Elastic IP (EIP) to each EC2 instance > running the ZK node & use the EIP in Solr. This way you could easily map > the EIP to a new EC2 instance subsequently, if required, and the changes > would get picked up by Solr automatically without a restart. > > Regards, > Aloke > > > On Sun, Dec 30, 2012 at 8:29 PM, Marcin Rzewucki <mrzewu...@gmail.com > >wrote: > > > Hi, > > Thanks for your replies. I don't change ZK hosts a lot of times. I'm > using > > Amazon platform and if a ZK host is not available I will start new EC2 > > instance and will have to plug it to Solr configuration (restart > required). > > In case of load balancer this would be much easier (no need to restart > > solr). > > > > Regards. > > > > > > On 30 December 2012 04:06, Anirudha Jadhav <aniru...@nyu.edu> wrote: > > > > > A zookeeper ensemble should be a fairly reliable, large enough no.of > > > machines(3+ typically 5,7,9) for a quorum. > > > So adding a load balancer on top will just add a hop and > > > decrease performance, and also add a failure point in the system. > > > > > > that being said there needs to be a way to provide solr with a way to > > > refresh conf. without restart. > > > > > > Solr takes a list of zk hosts on startup, If i am correct , uses one of > > > them unless it fails or round robins. > > > > > > why do your zkhosts need to change a lot? > > > > > > > > > On Sat, Dec 29, 2012 at 10:58 AM, Upayavira <u...@odoko.co.uk> wrote: > > > > > > > I would suggest asking this on the zookeeper user list. > > > > > > > > And let us know here what you find out, I'd be interested. > > > > > > > > Note, zookeeper, as I understand it, uses its own protocol, so to > some > > > > reasonable extent it probablmy depends on yr load balancer. Also, as > I > > > > understand it, zookeeper maintains active connections to solr hosts, > > > > which is not a common scenario for load balances as I understand it. > > > > > > > > Upayavira > > > > > > > > On Fri, Dec 28, 2012, at 04:39 PM, Marcin Rzewucki wrote: > > > > > Hi, > > > > > > > > > > Does Solr need connection to all of hosts in ZK ensemble or only to > > one > > > > > of > > > > > them at a time ? I wonder if it is possible to use load balancer > for > > ZK > > > > > ensemble and use only one address as zkHost for Solr ? Having load > > > > > balancer > > > > > makes it easier to change ZK hosts while still using same address > by > > > Solr > > > > > (no need to restart Solr or change its configuration). > > > > > > > > > > Thanks in advance. > > > > > Regards. > > > > > > > > > > > > > > > > -- > > > Anirudha P. Jadhav > > > > > >
