Comments on: How to Install ElasticSearch (Multi Node) Cluster on CentOS/RHEL, Ubuntu & Debian

By: Akshay Hegde

Akshay Hegde — Fri, 26 Apr 2019 15:16:51 +0000

Hi Rahul sir,
i had a doubt about the first step ,assigning the ip addresses to the nodes,
should we add the following ip to hosts file in etc/hosts directory??
Can you please help me on this.
Thank you in advance

By: techmechanik

techmechanik — Thu, 04 Aug 2016 05:09:45 +0000

Great write up! Thank you very much! Going build this; I shall provide an update once completed.
Do you also have a logtash and kibana write up to above article?

By: yakup

yakup — Sun, 26 Jun 2016 23:08:44 +0000

Hi ı wonder the performance of 3 or more nodes ?

By: Atul

Atul — Thu, 02 Jul 2015 06:22:19 +0000

Hi Rahul,

One QQ .. How can we setup ES cluster to get access to it with a single URL instead of node specific URL?
Note – If current master fails this URL should be able to automatically re-point to newly elected master.

Regards,
Atul

By: Sunil

Sunil — Mon, 29 Jun 2015 08:27:50 +0000

Hi Rahul,
I have started cluster with one master node and 2 data nodes.
However when I do curl http://localhost:9200/_nodes/process?pretty, It shows only a master node and 1 data node. It doesn’t show second data node as below. Why so?

{
“cluster_name” : “presit-elasticsearch”,
“nodes” : {
“bC83hVbgRaiHuPrOn133dA” : {
“name” : “presit-data-node-1”,
“transport_address” : “inet[/xx.xxx.xx.xx:9300]”,
“host” : “hostname1”,
“ip” : “xx.xxx.xx.xx”,
“version” : “1.5.2”,
“build” : “62ff986”,
“http_address” : “inet[/xx.xxx.xx.xx:9200]”,
“attributes” : {
“master” : “false”
},
“process” : {
“refresh_interval_in_millis” : 1000,
“id” : 10278,
“max_file_descriptors” : 65535,
“mlockall” : false
}
},
“zjPvIyRpSYGUrRg1-ZX5nw” : {
“name” : “presit-master-Node”,
“transport_address” : “inet[/xx.xxx.xx.xx:9300]”,
“host” : “hostname1”,
“ip” : “xx.xxx.xx.xx”,
“version” : “1.5.2”,
“build” : “62ff986”,
“http_address” : “inet[/xx.xxx.xx.xx:9200]”,
“attributes” : {
“data” : “false”,
“master” : “true”
},
“process” : {
“refresh_interval_in_millis” : 1000,
“id” : 22738,
“max_file_descriptors” : 65535,
“mlockall” : false
}
}
}

By: Sunil Chaudhari

Sunil Chaudhari — Fri, 26 Jun 2015 10:19:56 +0000

In reply to Rahul. Hi Rahul, Thanks for quick reply. I have single host ready for environment set up. 1) Can I create 2 data nodes and 1 master node n single host? 2) How much ES instaces I need to run? If more than 1 instance is required then how can I run those? I use command [user@xxx bin] $ sudo service elasticsearch start 3) Do I need to create more elasticsearch.yml example elasticsearch.0.yml, elasticsearch.1.yml and so on? Also please share steps to secure ES behind nginx. thanks, Sunil

By: Rahul

Rahul — Fri, 26 Jun 2015 09:36:14 +0000

In reply to Sunil. Hi Sunil, ES automatically works on cluster environments. You just need to keep cluster.name same on all nodes you want to replicate. When ES started, it automatically searches for all nodes with same cluster.name on local network and start replication automatically.

By: Sunil

Sunil — Fri, 26 Jun 2015 08:36:45 +0000

Hi Rahul,
I have one doubt in this tutorial.
Where is the relation in between all these three nodes?
.yml files are different. ES runs on different host:port and how come data inserted on one host be available to others? Please specify the setting which ensures the relation/connection between these 3 nodes. I think that is missing.

br,
Sunil