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
