Return Instances Where Name Equals String

[erickkendall]

I have the following which will list the name and instance id

aws ec2 describe-instances --region us-east-1 --profile profile --query 'Reservations[*].Instances[].[Tags[?Key==Name].Value | join(, , @), InstanceId | join(, , to_array(to_string(@))) ]' --output table

How can I limit the results to only those servers who match some string - like [Tags[?Key==Name].Value == serverxyz

[aBurmeseDev]

Hi @erickkendall - thanks for reaching out.

Can you please elaborate more on which value you'd like to filter, for example, instance name, owner tag etc..? A combination of filters and query option would be what you're looking for. Here are an example that I think could be relevant:

• To filter instances of the specified type and only display their instance IDs, Availability Zone, and the specified tag value
  • The following describe-instances examples display the instance ID, Availability Zone, and the value of the Name tag for instances that have a tag with the name tag-key, in table format.

aws ec2 describe-instances \
    --filters Name=tag-key,Values=Name \
    --query 'Reservations[*].Instances[*].{Instance:InstanceId,AZ:Placement.AvailabilityZone,Name:Tags[?Key==`Name`]|[0].Value}' \
    --output table

Also --query uses JMESPath syntax and here are examples: https://jmespath.org/examples.html

Hope that helps!