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51 lines
1.3 KiB
Bash
51 lines
1.3 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2019-11-27 20:41:35 +0000 (Wed, 27 Nov 2019)
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#
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# https://github.com/harisekhon/bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/harisekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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# intentionally not using lib/ so that this script is standalone and can be easily distributed to VMs without git cloning the whole repo
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usage(){
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echo "
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AWS EC2 Metadata API query shortcut
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${0##*/} <resource> [curl_options]
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eg. ${0##*/} public-ipv4
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${0##*/} public-hostname
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${0##*/} local-ipv4
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${0##*/} local-hostname
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${0##*/} ami-id
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${0##*/} instance-type
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${0##*/} placement/availability-zone
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See also ec2-metadata script which is a more complete shell script
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"
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exit 3
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}
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if [ $# -lt 1 ] ||
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[[ "${1:-}" =~ -.* ]]; then
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usage
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fi
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if ! curl -sS --connect-timeout 2 http://169.254.169.254/ &>/dev/null; then
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echo
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echo "This script must be run from within an EC2 instance as that is the only place the AWS EC2 Metadata API is available"
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exit 2
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fi
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curl "http://169.254.169.254/latest/meta-data/${1:-}" "${@:2}"
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