AWS - EC2 Fundamentals
You try to launch a Spot Instance but get an error saying capacity is unavailable. What is the best fix?
You try to launch a Spot Instance but get an error saying capacity is unavailable. What is the best fix?
medium📝 Debug Q6 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Spot capacity limits
Spot Instances depend on spare capacity; if unavailable, launch fails.Step 2: Choose alternative pricing model
Switching to On-Demand ensures instance launch without capacity constraints.Final Answer:
Switch to On-Demand Instances -> Option BQuick Check:
Spot capacity unavailable? Use On-Demand [OK]
Quick Trick: Spot capacity limited; On-Demand always available [OK]
Common Mistakes:
- Trying to increase Reserved Instances
- Requesting Dedicated Hosts unnecessarily
- Terminating Spot Instances won't help
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