Cluster elasticsearch on basic license

Elastic Stack Elasticsearch
1

Hi, I have 1 elasticsearch node, I've installed another node in another DC. Now I wanna have a cluster between 2 node so data can be HA. Based on documentations I've added this config (on master):

cluster.name: mycluster
xpack.security.enabled: true
xpack.security.transport.ssl.enabled: true
xpack.security.transport.ssl.verification_mode: certificate
xpack.security.transport.ssl.keystore.path: elastic-certificates.p12
xpack.security.transport.ssl.truststore.path: elastic-certificates.p12 
node.name: node-1
node.master: true (it's false on node-2)
node.data: true
node.attr.rack: DC1
path.data: /data/elasticsearch
path.logs: /var/log/elasticsearch
network.host: <Valid IP>
discovery.seed_hosts: ["node-1","node-2"]
cluster.initial_master_nodes: ["node-1"]

After restarting them, nothing happened. no changes. It's about config or something else ?
Thank You

2

In order for a cluster to be HA you need at least 3 nodes as Elasticsearch is based on consensus algorithms for leader election. 2 is not enough.

1 Like
3

3 node, 2 data, 1 master you mean ? can I have all 3 be masters and data? I wanna have read/write on all nodes.
@Christian_Dahlqvist

4

3 nodes that are master r we legible and hold data (the default configuration).

1 Like
5

Please keep in mind, that an Elasticsearch cluster with nodes in different DCs is not a supported configuration.

6

That is a good point. Elasticsearch requires very low latencies and good throughput between nodes. Well connected data centres in close proximity tend to work (think AWS AZ), but data centres in different regions will cause problems.

7

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