See this: http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/modules-node.html
Basically, the recommended pattern talks about isolating responsibilities. A node should either be a data node, master-eligible node, or an external gateway to the cluster (client node) -- Itamar Syn-Hershko http://code972.com | @synhershko <https://twitter.com/synhershko> Freelance Developer & Consultant Lucene.NET committer and PMC member On Thu, Feb 12, 2015 at 4:08 PM, Eric <[email protected]> wrote: > Hello, > > Currently I have a 3 node ElasticSearch cluster. Each node is a RHEL VM > with 16 gig RAM. The basic config is: > > - All nodes can be master and are data nodes. > - 3 shards and 1 replica > - 6 different indexes > > I'm starting to run into issues of ElasticSearch bogging down on searches > and is completely freezing sometimes at night. I've dedicated 9 gig to heap > size and it says i'm using ~60% of the heap RAM and about 70% of the > overall heap. So even though I'm using quite a bit of the heap, I'm not > maxed out. I've attached a screenshot of the exact stats from Elastic HQ. > I'm averaging around 10,000 events/sec coming into the cluster from 6 > different Logstash instances on another server. > > My question is what can I do to help the stability and speed of my > cluster. Currently I'm having issues with 1 node going down and it taking > everything else down. The HA portion isn't working very well. I'm debating > about either adding 1 more node with the exact same stats or adding 2 more > smaller VMs that will act as master nodes only. I didn't know which one was > recommended or where I would get the biggest bang for the buck. > > Any information would be greatly appreciated. > > Thanks, > Eric > > -- > 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/354a2326-5532-4239-87ea-f02af64fe71f%40googlegroups.com > <https://groups.google.com/d/msgid/elasticsearch/354a2326-5532-4239-87ea-f02af64fe71f%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- 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/CAHTr4ZureLROJMaO7gVprFjA2OmRZA0ZYyH1v%2Bges06u_V__6w%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
