Configuring Spot Instances

Cloud providers usually provide user an option to create spot instances. Spot Instances are available at a discount compared to On-Demand prices. Cloud provider may terminate a spot instance without notification due to capacity reasons. You can use Spot Instances for various stateless, fault-tolerant, or flexible applications such as big data, containerized workloads, CI/CD, web servers, high-performance computing (HPC), and test & development workloads.

By default, CloudTik head node and worker nodes will be created with non-spot instance. You can override worker node preference on spot instances or non-spot instances. Please remember that if you set to prefer spot nodes, you may face failures on creating workers for a specific type if that instance type of spot instances are not available. You can switch to non-spot instances if this happens.

Disable spot instance for worker nodes

If you want to disable spot instance for worker node, you can set prefer_spot_instance to false under the provider section. For example,

provider:
    prefer_spot_instance: false

Prefer spot instance for worker nodes

If you want to explicitly prefer spot instance for worker node, you can set prefer_spot_instance to true under the provider section. For example,

provider:
    prefer_spot_instance: true