Define reserve nodes when creating deployment

This article describes how to define reserve nodes when creating an Exasol 8 deployment.

Prerequisites

This procedure is part of the procedure when creating a native cloud deployment of Exasol on AWS. For information about the full deployment procedure, see Deploy Exasol on AWS.

Procedure

To define reserve nodes when you create a deployment, add the parameter CCC_PLAY_RESERVE_NODES to the deployment configuration.

Parameter Description Data type Default value
CCC_PLAY_RESERVE_NODES

The number of hosts to use as reserve nodes.

integer [empty]

The reserve nodes are part of the total number of nodes. For example, deploying with 4 nodes and CCC_PLAY_RESERVE_NODES=1 results in a database with 3 active nodes and one reserve node.

The number of reserve nodes must be less than the total number of nodes.

Example configuration
CCC_AWS_PROFILE=default
CCC_AWS_REGION=eu-west-1
CCC_AWS_KEY_PAIR=ic-pair1
CCC_AWS_KEY_PAIR_FILE=ic-pair1.pem
CCC_USER_EMAIL=user@example.com
CCC_USER_PASSWORD=98f*7jhgdf_Yfe
CCC_PLAY_ACCESS_NODE=true
CCC_PLAY_ADMIN_PASSWORD=sdf87934kh&8_yg7
CCC_PLAY_DB_PASSWORD=R_&hkjgKjgnvP9x
CCC_PLAY_RESERVE_NODES=1