I have an instance named dev-server-03. Now how can I search all dev-server-* instances from command line?
I am using aws cli tool.
asked Dec 10, 2013 at 11:50
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This depends on how you've named the instance. Did you set the hostname inside the OS, on the AWS console or both?– Craig WatsonCommented Dec 10, 2013 at 13:16
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Yeah inside the OS hostname is set to same Name.– Shiplu MokaddimCommented Dec 11, 2013 at 5:29
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3 Answers
Assuming that you are using the convention of putting the name of the instance in a tag with the key of "Name" (this is what the AWS Console does when you enter a name), then you can use the --filters option to list those instances with aws-cli:
aws ec2 describe-instances --filters 'Name=tag:Name,Values=dev-server-*'
If you just wanted the instance ids of those instances, you could use:
aws ec2 describe-instances --filters 'Name=tag:Name,Values=dev-server-*' \
--output text --query 'Reservations[*].Instances[*].InstanceId'
Note: --query may require a recent version of aws-cli but it's worth getting.
answered Dec 10, 2013 at 23:20
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2Omg it took me almost half an hour to figure this out... how weird is this :
Name=tag:Name– lisakCommented Apr 9, 2015 at 14:40 -
2Thanks Eric - I was getting multiple instance IDs on the same line, using your query, but github.com/aws/aws-cli/issues/914#issuecomment-56210312 suggested
--query 'Reservations[].Instances[].[InstanceId]which works for me– jaygoobyCommented Sep 5, 2016 at 20:35 -
7FWIW, the
jqtool can be used to get similar results toaws --querylike this:aws ec2 describe-instances | jq '.Reservations[].Instances[].PrivateIpAddress'--note the preceding.dot.– MarkHuCommented Nov 8, 2017 at 19:04 -
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2Also worth adding filter
'Name=instance-state-name,Values=running', as terminated instances show up in results for a while.– yurezCommented Nov 23, 2020 at 10:59
You can further filter with name, instance id and private ip with below,
aws ec2 describe-instances --filters "Name=tag:Name,Values=*myinstance*" --output json --query 'Reservations[*].Instances[*].[PrivateIpAddress,InstanceId,Tags[?Key==`Name`].Value]' --region us-east-1
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This filtering by Key name was exactly what I was looking for, thank you!– ingernetCommented Dec 13, 2019 at 4:43
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Specifying region was exactly thing without which command refused to work. Now it works, thank you! Commented May 12, 2020 at 8:00
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If you're using jq, you can achieve this with:
aws ec2 describe-instances |
jq -r '.Reservations[].Instances[] |
select(.Tags[].Value | startswith("dev-server-"))'
You can append additional filters to jq for more specific results, such as:
... startswith("dev-server-")) | .PublicDnsName'
