AWS学习笔记3 -- Spot Instance， Spot fleets

AWS学习笔记3 -- Spot Instance， Spot fleets

How to terminate persistant spot 请求?

Spot Fleets

Spot instances + (optional) On-Demand Instances 在价格约束下满足目标产能 meet the target capacity with  price constraints

定义possible launch pools: instance type (m5.large), OS, AZ可以有多个launch pools, 供fleet选择当满足产能，或达到最高费用时停止launch instances

Strategies to allocate spot instances:

最低价格 lowest price：from the pool with the lowest price (cost optimization, short workload) 多元化 diversified: distributed across all pools (great for availability, long workloads) 容量优化 capacity optimized: pool with the optimal capacity for the numer of instances

Spot Fleets allow us to automatically request Spot Instances with the lowest price

Sport Fleets 允许我们以最低价格自动请求Spot 实例

"LaunchTemplateConfigs": [ { "LaunchTemplateSpecification": { "LaunchTemplateId": "lt-0e8c754339b27161c", "Version": "1" } "Overrides": [ { "InstanceType": "m4.16xlarge", "WeightedCapacity": 64, }, { "InstanceType": "m5.24xlarge", "WeightedCapacity": 96, }, ] } ], "TargetCapacitySpecification": { "TotalTargetCapacity": 2880, "OnDemandTargetCapacity": 960, "SpotTargetCapacity": 1920, "DefaultTargetCapacityType": "Spot" }}

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