InsufficientInstanceCapacity aws resource_error ai_generated partial

实例容量不足：您请求的可用区当前没有足够的容量

InsufficientInstanceCapacity: We currently do not have sufficient capacity in the Availability Zone you requested

ID: aws/ec2-insufficient-instance-capacity

其他格式: JSON · Markdown 中文 · English
80%修复率
85%置信度
1证据数
2023-06-15首次发现

版本兼容性

版本状态引入弃用备注
ec2-2024-01-01 active — — —
aws-cli/2.17.0 active — — —

根因分析

指定可用区中的 AWS EC2 实例集群缺乏所请求实例类型的可用计算容量，通常是由于高需求或资源限制。

English

AWS EC2 fleet in the specified Availability Zone lacks available compute capacity for the requested instance type, often due to high demand or resource constraints.

generic

官方文档

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/troubleshooting-launch.html#insufficient-instance-capacity

解决方案

  1. 更改实例类型为类似但不太流行的类型（例如，从 t3.medium 改为 t3.large 或 t4g.medium）并重新启动。
  2. 使用不同的可用区，或在 Auto Scaling 组中启用“无首选可用区”。对于 CLI：`aws ec2 run-instances --placement AvailabilityZone=us-east-1b`
  3. 使用按需容量预留或 Savings Plans 提前预留容量。创建预留：`aws ec2 create-capacity-reservation --instance-type t3.medium --availability-zone us-east-1a --instance-count 5`

无效尝试

常见但无效的做法:

  1. Retry the same request repeatedly without changes 95% 失败

    AWS capacity is per-AZ and per-instance-type; retrying the same request won't allocate new capacity if it's exhausted across that AZ.

  2. Increase the instance count in the same request expecting partial fulfillment 90% 失败

    The error is a hard capacity check; AWS rejects the entire launch request if any instance cannot be placed, not a partial fulfillment.