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47 lines
1.1 KiB
Bash
47 lines
1.1 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: 2019-11-21 15:54:25 +0000 (Thu, 21 Nov 2019)
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#
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# https://github.com/HariSekhon/DevOps-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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# Quick script to make it a little easier to query the Google Cloud GCE Metadata API
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#
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# Must be run from inside GCE otherwise will fail with an error like this:
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#
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# curl: (6) Could not resolve host: metadata.google.internal
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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usage(){
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echo "
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Simple query wrapper to GCE's Metadata API
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Lists resources if no argument given
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${0##*/} <resource>
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eg. ${0##*/} instance/scheduling/preemptible
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"
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exit 3
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}
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if [ $# -gt 1 ] ||
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[[ "${1:-}" =~ -.* ]]; then
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usage
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fi
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curl -sS -H "Metadata-Flavor: Google" "http://metadata.google.internal/computeMetadata/v1/${1:-}"
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# above doesn't output a trailing newline, when using in shell we usually want this
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echo
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