Get-EC2instancestatus not returning an object despite Get-EC2Instance returning one

[rileysea]

Description

Using Get-EC2Instancestatus without a parameter and with the InstanceId parameter does not return any objects in the eu-west-1 region for me.

However, using Get-EC2Instance does.

Reproduction Steps

$instances = (get-ec2instance -Region eu-west-1).Instances
$instances.count = 4
$instances | % {Get-EC2InstanceStatus -InstanceID $_.InstanceId -Region 'eu-west-1'}

I also noticed you can't pipe the two functions together

(get-ec2instance -Region eu-west-1).Instances | Get-EC2Instancestatus -InstanceId $_.InstanceId

Logs

Environment

• Build Version: 4.1.15.0
• OS Info: MacOS Big Sur 11.6
• Build Environment: VSCode + Terminal
• Targeted .NET Platform:

Resolution

• [ ] :wave: I can/would-like-to implement a fix for this problem myself

---

This is a :bug: bug-report

[ashishdhingra]

Hi @rileysea,

Good afternoon.

Thanks for reporting the issue. On looking further, here are my findings:

• Get-EC2Instance Cmdlet invokes DescribeInstances service API operation.
• Get-EC2InstanceStatus invokes DescribeInstanceStatus service API operation. Per service API action page, this describes the status of the specified instances or all of your instances. By default, only running instances are described, unless you specifically indicate to return the status of all instances. There is a parameter IncludeAllInstances which has a default value of false.

Based on above reference from service API pages, only the running instances would be returned when you use Get-EC2InstanceStatus CmdLet. You could change the default behavior by using -IncludeAllInstance parameter with value $true to have it return status of all instances. I'm assuming this is true even if you specify -InstanceId parameter.

Kindly note that the above PowerShell CmdLets are autogenerated and the behavior is controlled by the EC2 service API. The behavior could not be changed by service team since it would be a breaking change for existing customers.

Please review the results of your call to Get-EC2Instance -Region eu-west-1 to see if it includes other instances (apart from running). If yes, please try the following:

• Use the -IncludeAllInstance parameter with value $true in you Get-EC2Instancestatus call and see if it resolves the issue.
• -InstanceId parameter is an array of strings. Hence you should be able $instances directly as value for -InstanceId parameter. Kindly check if this works, with or without -IncludeAllInstanceparameter (with value$true`).

Thanks, Ashish

[rileysea]

That seemed to work - thanks Ashish

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