HIgh availability of ES

[Yogesh_BG]

Sorry i meant, one master node and one data node. It can happen? and what could be the issue? i had set zen.discovery to 1 in this case

[DavidTurner]

@Yogesh_BG

metrics-2018.11-10 1 p UNASSIGNED NODE_LEFT
metrics-2018.11.09 1 p UNASSIGNED NODE_LEFT

This means that there was another node holding the primaries of these shards, and that node left the cluster.

[Yogesh_BG]

I think i understood, initially data node had node.name as node1 and when restarted it came up with node.name as node2. Does this can cause the issue?

[DavidTurner]

@Yogesh_BG

I think i understood, initially data node had node.name as node1 and when restarted it came up with node.name as node2. Does this can cause the issue?

I don't think so, but I've not tried it. When you fixed the name did it solve the problem?

[Yogesh_BG]

Have not tested it, am suspecting this could be issue. and again am testing the same. if it works i will share the result.

If it doesnt fix the issue, then how it can happen. because i have only one data node and the restart happened. as u said "there was another node holding the primaries of these shards" this can not happen at all, as i dont have an other data node in cluster at all.

[DavidTurner]

@Yogesh_BG

If it doesnt fix the issue, then how it can happen. because i have only one data node and the restart happened. as u said "there was another node holding the primaries of these shards" this can not happen at all, as i dont have an other data node in cluster at all.

There were, at some point, three data nodes in your cluster:

@Yogesh_BG

{
  "cluster_name" : "metrics-datastore",
  "status" : "red",
  "timed_out" : false,
  "number_of_nodes" : 6,
  "number_of_data_nodes" : 3,
  "active_primary_shards" : 10,
  "active_shards" : 30,
  "relocating_shards" : 0,
  "initializing_shards" : 0,
  "unassigned_shards" : 24,
  "delayed_unassigned_shards" : 0,
  "number_of_pending_tasks" : 0,
  "number_of_in_flight_fetch" : 0,
  "task_max_waiting_in_queue_millis" : 0,
  "active_shards_percent_as_number" : 55.55555555555556
}

[Yogesh_BG]

This is different example, these are two independent setup, sorry i mixed both setup qns here

[DavidTurner]

@Yogesh_BG

This is different example, these are two independent setup, sorry i mixed both setup qns here

You've asked a number of unrelated questions in this thread. It'd be useful if, when a question is resolved, you mark it as resolved and open a new thread if you have a new question. These long meandering threads are not very useful for other people who may be looking for similar information at a later date.

[Yogesh_BG]

yeah sure, thank you