Elasticsearch host classes

The host class determines the computing power allocated for each host with the specific role in the cluster. When you change the host class for a role in the cluster, the configuration of all hosts with this role that were previously created in the cluster changes accordingly. For more information about roles, see Resource relationships in the service.

The following disk types are available to hosts with the Data node role:

• network-ssd
• network-hdd
• local-ssd
• network-ssd-nonreplicated

For hosts with the Master node role, the only available storage type is network SSD (network-ssd).

The available storage size does not depend on the host class. For storage limitations, see Quotas and limits.

Available host classesAvailable host classes

Hosts in Managed Service for Elasticsearch clusters are deployed on Yandex Compute Cloud VMs. You can create these VMs on any standard platform supported by Compute Cloud. To learn more about the platforms, see Platforms.

The full list of possible host configurations on each platform is provided below.

For clusters with hosts residing in the ru-central1-d availability zone, local SSD storage is not available if using Intel Cascade Lake.

Configuration types:

• s2, s3: Standard configurations with 4:1 RAM GB to vCPU ratio.
• m2, m3: Configurations with an increased RAM GB to vCPU ratio (8:1). These configurations may be useful for clusters with higher cache requirements.