Setup of a cluster


(Luca Belluccini) #1

ello,
I am setting up a L-E-K solution to be able to compute statistics about our transactions.
I prepared a VM running logstash instances pulling from redis queues and rerouting structured logs to a elasticsearch 0.90.9 cluster.
We have more or less 15k Tps and we expect to grow (double up).
The indexes follow a template deployed on all nodes.

All nodes can be master.
All nodes contain data.

The problem is... The system becomes slow...

Daily indexes with this setup grow up to 20/30gb each, reaching easily 1billion of documents in 7/10days.

The cluster is composed by 4 * 24 core 96gb RAM systems.

I could add some "powerful" VM (8 core 32gb ram each) without data (we are limited to 40gb disk space).

Should I increase the number of shards and keep replicas to 1?

Since I am continuously feeding the es cluster, maybe would be useful to exploit some no-data nodes to load balance search queries.

Any advice?

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(Binh Ly-2) #2

When you say slow, do you mean queries are slow? If so, can you give some
example queries and also response times that you are seeing?

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(Luca Belluccini) #3

I am using Kibana, so typical dashboards with 6-7 facets on potentially non
low cardinality fields.

Slow, I mean non reactive dashboard, taking several seconds (20 or more) to
make the full dashboard appear.

Il giorno giovedì 27 marzo 2014 13:38:34 UTC+1, Binh Ly ha scritto:

When you say slow, do you mean queries are slow? If so, can you give some
example queries and also response times that you are seeing?

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(system) #4