Master only nodes don't need to leverage FS caching as they hold no data. So you can easily increase their heap to 75% of system. However you really don't want to have less than 1GB of heap irrespective of the role it plays.
PS - We're moving to https://discuss.elastic.co/, please join us there for any future discussions! On 28 May 2015 at 23:11, prakhar <[email protected]> wrote: > Sorry to bother you @Mark, but this term *appropriate heap size* always > haunts me. Suppose, I have 2 virtual machines (4 core, 8 gb RAM each). > According to elasticsearch's documentation, half of RAM should be allocated > to elasticsearch. So, this is what I came up with: > > Node1: Elasticsearch 1.5.2 *Master-Data* node with 4 gb HEAP (*server1*) > Node2: Elasticsearch 1.5.2 *Master-Only*(no data) node with 1 gb HEAP > (*server1*) > Node3: Elasticsearch 1.5.2 *Master-Data* node with 4 gb HEAP (*server2*) > > Do you think this is a sane strategy? Moreover, if I make *Master-Only* > node > (Node2) invisible to load balancer i.e. I simply won't include it at all, > will it still require 1 gb HEAP? > Please forgive me if I am asking something too naive. > > > > -- > View this message in context: > http://elasticsearch-users.115913.n3.nabble.com/Elasticsearch-2-node-cluster-with-failover-tp4074949p4074968.html > Sent from the Elasticsearch Users mailing list archive at Nabble.com. > > -- > Please update your bookmarks! We have moved to https://discuss.elastic.co/ > --- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/elasticsearch/1432818693390-4074968.post%40n3.nabble.com > . > For more options, visit https://groups.google.com/d/optout. > -- Please update your bookmarks! We have moved to https://discuss.elastic.co/ --- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/CAEYi1X_Oj_d3qG%3DQoTW0A_ChjdXigoj2Rn2iOQurnGpCcU21dQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
