List public IP addresses of EC2 instances

Question

I want to list the public IP addresses of my EC2 instances using Bash, separated by a delimiter (space or a new-line).

I tried to pipe the output to jq with aws ec2 describe-instances | jq aws ec2 describe-instances | jq , but can't seem to isolate just the IP addresses.

Can this be done by aws alone, specifying arguments to jq , or something else entirely?

Answer 1

Directly from the aws cli :

aws ec2 describe-instances \
  --query "Reservations[*].Instances[*].PublicIpAddress" \
  --output=text

Answer 2

• Filter on running instances (you can drop that part if you don't need it)
• Query for each PublicIPaddress and the Name Tag, handling when Name isn't set

aws ec2 describe-instances \
  --filter "Name=instance-state-name,Values=running" \
  --query "Reservations[*].Instances[*].[PublicIpAddress, Tags[?Key=='Name'].Value|[0]]" \
  --output text

Answer 3

The below command would list the IP addresses of all your running EC2 instances

aws ec2 describe-instances | grep PublicIpAddress | grep -o -P "\d+\.\d+\.\d+\.\d+" | grep -v '^10\.'

Hope that answers your query...

But this works without all the errors about access:

wget -qO- http://instance-data/latest/meta-data/public-ipv4/|grep .

Answer 4

You can use instance metadata so you can run the following command from the ec2 instance:

curl http://169.254.169.254/latest/meta-data/public-ipv4

and it will give you the public IP of the instance. If you want the private IP, you will run

curl http://169.254.169.254/latest/meta-data/local-ipv4

Answer 5

aws ec2 describe-instances --query "Reservations[].Instances[][PublicIpAddress]"

参考： http : //docs.aws.amazon.com/cli/latest/userguide/controlling-output.html