How can I get list of only running instances when using ec2-describe-tags

Question

How can I get list of only running instances when using ec2-describe-tags. I am using my command like this:

ec2-describe-tags --filter "resource-type=instance" --filter "value=somevalue" --filter "key=key" 

Answer 1

It is easy using the aws-cli:

aws ec2 describe-instances --query 'Reservations[*].Instances[*].[InstanceId]' --filters Name=instance-state-name,Values=running --output text 

Answer 2

Expanding on John Rotenstein's answer you can definitely do this with describe-instances.

This will list Name tag and IP of all running instances whose Name tag contains a specific word:

name_tag=mongodb aws ec2 describe-instances --filter "Name=tag-key,Values=Name" "Name=tag-value,Values=*$name_tag*" "Name=instance-state-name,Values=running" --query "Reservations[*].Instances[*][Tags[?Key=='Name'].Value[],NetworkInterfaces[0].PrivateIpAddresses[0].PrivateIpAddress]" --output text 

Output:

10.100.2.10 mongodb0 10.100.2.11 mongodb1 10.100.2.12 mongodb2 

A bonus here is that leaving name_tag empty lists all running instances.