Unable to make my cluster state as Green even with more than 1 nodes

Elastic Stack Elasticsearch
1

Hello Team,

I have two instances in same host,
In one instance data already loaded without any extra node connected to that..

Then after for to create cluster, changes made in Node 1 as:
cluster.name: elasticsearch
node.name: node1
node.master: true
node.data: true
http:port: 9200
tcp.port: 9300
discovery.zen.ping.multicast.enabled: false
discovery.zen.ping.unicast.hosts: [“192.168.1.59:9300”,”192.168.1.59:9301”]

changes made in Node2 elasticsearch.yml file:
cluster.name: elasticsearch
node.name: node2
node.master: true
node.data: true
http:port: 9201
tcp.port: 9301
discovery.zen.ping.multicast.enabled: false
discovery.zen.ping.unicast.hosts: [“192.168.1.59:9300”,”192.168.1.59:9301”]

Then I have started node 1 and the started node 2

when I check for cluster health status as:

GET _cluster/health?pretty=true:

Response:

"cluster_name": "elasticsearch",
"status": "yellow",
"timed_out": false,
"number_of_nodes": 2,
"number_of_data_nodes": 2,
"active_primary_shards": 45,
"active_shards": 45,
"relocating_shards": 0,
"initializing_shards": 0,
"unassigned_shards": 45,
"number_of_pending_tasks": 0

The same response am seeing in 192.168.1.59:9200, 192.168.1.59:9201..

May I know why the cluster is not making its status to green even though it have more than 1 node connected in a host?????

2

Is there anything in the ES logs that would indicate why ES isn't able to assign shards to the newly added node? Is there ample disk space on that node?

3

Hi Magnus,

Thanks for your response.
In logs am unable to see anything,, may I know what is ample disk space and why do we need to consider that???
And how to check that ample disk space????

4

One more to Say that both nodes 192.168.1.59:9200 and 192.168.1.59:9201 are accessable (able to get data from both nodes, which seems like both are communicating)..
But unable to make them Green state...

5

may I know what is ample disk space and why do we need to consider that???

Elasticsearch will refuse to allocate shards on node with less than 15% free space on the partition that's supposed to contain the ES data. See Disk-based shard allocation | Elasticsearch Guide [8.11] | Elastic.

And how to check that ample disk space????

With the df tool, for example.