I need to add another vCPU to a VPC - any clues?

Question

Hi there, I am a 'rare' user of AWS - I set things up, leave them to run and then don't really delve into the depths of all the options available, this means that when an App i'm running on an EC2 instance tells me I need 2 CPU cores, I seem to be unable to find out how to add another vCPU to my instance.  Any clues, guidance would be amazing - thanks you - Graham :-)

Riku_Kobayashi · Accepted Answer

Hello.

What EC2 instance type are you currently using?  
If the instance type you are currently using is t2, I think it would be fine to upgrade to "t2.medium" since the vCPU is 2.  
https://aws.amazon.com/ec2/instance-types/?nc1=h_ls

The instance type can be changed by following the steps in the document below.  
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-resize.html#change-instance-type-of-ebs-backed-instance

Graham · Answer

BIG thanks for the suggestion - I have followed the steps and I've upgraded to t2.medium - 2 Cores :-)  ... Restarted the instance and currently not able to connect to the Public IP address now, I'll trhy another restart - but thank you for helping - much appreciated, Graham

xanthic · Answer

You’ll need to select a instance size that has the 2 vCPU that you need.

Stop the instance, edit the instance size and start it up again.

I need to add another vCPU to a VPC - any clues?

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