I´ve created a 200 nodes cluster and successed with 3 master_eligible nodes. The important thing is that they have the data_node setting in false, and data_nodes have it the other way around. This will improve a lot your cluster resiliency.
On Wednesday, January 14, 2015 at 4:22:58 PM UTC-3, Ed Kim wrote: > > 3 should be fine, and they don't even have to be beefy machines. > > On Wednesday, January 14, 2015 at 1:39:47 AM UTC-8, Darshat Shah wrote: >> >> To clarify, the guideline I'm looking for is how many nodes to set apart >> as dedicated to be master eligible in a cluster of size N. That is not >> N/2+1. >> >> On Wednesday, January 14, 2015 at 2:24:29 PM UTC+5:30, Darshat Shah wrote: >>> >>> That's the minimum number. Is it recommended to have more, or will >>> elections take longer if we have more than this minimum? >>> >>> On Wednesday, January 14, 2015 at 2:16:27 PM UTC+5:30, drjz wrote: >>>> >>>> The formula is N/2+1, so in your case that would be 46 if there are 90 >>>> nodes. >>>> >>>> /JZ >>>> >>>> On Wednesday, January 14, 2015 at 9:38:01 AM UTC+1, Darshat Shah wrote: >>>>> >>>>> Hi, >>>>> What is the guideline on recommended number of master eligible nodes >>>>> in a cluster? >>>>> >>>>> We have a big cluster with 90+ nodes, currently all are eligible to be >>>>> masters. However I do see master election take very long after a cluster >>>>> restart - most nodes are still trying to ping the old master and I think >>>>> there is no way to force a re-election. >>>>> >>>>> Will re-election be faster if number of master eligible nodes be less? >>>>> Is there a rule of thumb, given N nodes how many should we configure to >>>>> be >>>>> eligible to be masters? >>>>> >>>>> Thanks >>>>> Darshat >>>>> >>>> -- 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/6d952146-4f2f-4c94-952e-dcc852f0be57%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
