ElasticSearch ElasticSearch Cluster Management & Administration

Question 1

What is the default number of primary shards per index in Elasticsearch 7.x and later?

Accepted Answer

1

Answer

5

Answer

3

Answer

10

Question 2

Which API endpoint returns the overall health status (green, yellow, or red) of an Elasticsearch cluster?

Accepted Answer

GET /_cluster/health

Answer

GET /_cluster/stats

Answer

GET /_nodes/stats

Answer

GET /_cat/nodes

Question 3

What does a 'red' cluster health status indicate in Elasticsearch?

Accepted Answer

At least one primary shard is unassigned

Answer

All primary and replica shards are assigned

Answer

Some replica shards are unassigned

Answer

The cluster is undergoing a rolling restart

Question 4

What is the minimum number of master-eligible nodes recommended to avoid a split-brain scenario in Elasticsearch?

Accepted Answer

3

Answer

2

Answer

4

Answer

5

Question 5

Which Elasticsearch cluster-level setting limits the total number of open shards allowed per data node?

Accepted Answer

cluster.max_shards_per_node

Answer

index.number_of_shards

Answer

node.max_local_storage_nodes

Answer

cluster.routing.allocation.total_shards_per_node

Question 6

What is the primary responsibility of the master node in an Elasticsearch cluster?

Accepted Answer

Managing cluster-wide state including index creation and shard allocation

Answer

Executing search queries and aggregations

Answer

Storing and retrieving document data

Answer

Load balancing client requests across data nodes

Question 7

What happens when cluster.routing.allocation.enable is set to 'none' in Elasticsearch?

Accepted Answer

All shard allocations are disabled, preventing any new shard assignments

Answer

Only replica shard allocations are disabled

Answer

New index creation is prevented

Answer

The cluster stops electing a new master node