Configure HCD guardrails

HCD guardrails enforce best practices and prevent issues in your HCD environment.

Prerequisites

You need an HCD cluster that is deployed and running.

Configure guardrails in the `cassandra.yaml` file

Edit the cassandra.yaml file, and then set guardrails under the guardrails parent element.

The following example sets the failure thresholds for the sai_indexes_per_table guardrail to 50 and the sai_indexes_total guardrail to 100.
```
....
      config:
        cassandraYaml:
          guardrails:
            sai_indexes_per_table_failure_threshold: 50
            sai_indexes_total_failure_threshold: 100
....
```
Apply the changes to your cluster:
```
kubectl apply -f cassandra.yaml
```

For more information, see Guardrails in the HCD documentation.

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