Question about setup Elasticsearch with Loadbalancing

Elastic Stack Elasticsearch
1

Dear Community,

I want to put in place a kind of redundant loadbalancing setup with 2 ElasticSearch nodes + 2 Kibana Nodes with Elasticsearch Coordinated Only node role.

Here a picture of the setup

Capture

I will give you my configuration for each nodes :

elastic-01:

cluster.name: mycluster
node.name: elastic-01
network.host: 10.10.68.24
http.port: 9200
discovery.zen.ping.unicast.hosts: ["elastic-01", "elastic-02", "kibana-01", "kibana-02"]
discovery.zen.master_election.ignore_non_master_pings: true


elastic-02:

cluster.name: mycluster
node.name: elastic-02
network.host: 10.10.68.25
http.port: 9200
discovery.zen.ping.unicast.hosts: ["elastic-01", "elastic-02", "kibana-01", "kibana-02"]
discovery.zen.master_election.ignore_non_master_pings: true

kibana-01:

cluster.name: mycluster
node.master: false
node.data: false
node.ingest: false
search.remote.connect: false
network.host: localhost
http.port: 9200
transport.host: 10.10.68.25
transport.tcp.port: 9300

kibana-02:

cluster.name: mycluster
node.master: false
node.data: false
node.ingest: false
search.remote.connect: false
network.host: localhost
http.port: 9200
transport.host: 10.10.68.26
transport.tcp.port: 9300

It seems that when I browse from http://kibana-01:5601/ i have the following error :

plugin:elasticsearch@6.2.3 Service Unavailable

The same from the http://kibana-02:5601.

The elasticsearch logs from the Coordinated Only Nodes :

[2018-04-20T13:36:02,145][WARN ][o.e.d.z.ZenDiscovery     ] [zxSDt-c] not enough master nodes discovered during pinging (found [[]], but needed [-1]), pinging again

It seems that the coordinated only nodes are not seing the other elasticsearch nodes..

Maybe you have an idea on what is wrong with my setup.

Best Regards, Edouard.

2

ALL nodes need to know how to connect to the other nodes, so you need to add this also on the coordinating nodes.

If you have 2 nodes that are master-eligible, you should also set minimum_master_nodes to 2 as per these guidelines.

3

Thanks a lot Christian, I had also the following issue (port TCP/9300) not opennded on somes nodes.

Have a nice weekend !

Best Regards,

4

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