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86 lines
2.3 KiB
Bash
86 lines
2.3 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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# args: 'echo region is {region}'
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#
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# Author: Hari Sekhon
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# Date: 2021-07-19 14:59:58 +0100 (Mon, 19 Jul 2021)
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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 improve or 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 "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1090
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. "$srcdir/lib/utils.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Run a command against each AWS region enabled for the current account
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You may want to use this to run an AWS CLI command against all regions to find resources or perform scripting across regions
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This is powerful so use carefully!
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Requires AWS CLI to be installed and configured and 'aws' to be in the \$PATH
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All arguments become the command template
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The following command template tokens are replaced in each iteration:
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AWS Region: {region}
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If \$AWS_ALL_REGIONS is defined and not empty then iterates all regions, even those not enabled for the current account
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Examples:
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${0##*/} 'echo AWS region is {region}'
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AWS_ALL_REGIONS=1 ${0##*/} 'echo AWS region is {region}'
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Find EC2 instances across regions:
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${0##*/} aws ec2 describe-instances
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${0##*/} 'aws ec2 describe-instances | jq -r \".Reservations | length\"'
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="<command> <args>"
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help_usage "$@"
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min_args 1 "$@"
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cmd_template="$*"
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export AWS_DEFAULT_OUTPUT=json
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# --all-regions iterates all regions whether or not they are enabled for the current account
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if [ -n "${AWS_ALL_REGIONS:-}" ]; then
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aws ec2 describe-regions --all-regions
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else
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aws ec2 describe-regions
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fi |
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jq -r '.Regions[] | .RegionName' |
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while read -r region; do
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echo "# ============================================================================ #" >&2
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echo "# AWS region = $region" >&2
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echo "# ============================================================================ #" >&2
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export AWS_DEFAULT_REGION="$region"
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cmd="$cmd_template"
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cmd="${cmd//\{region\}/$region}"
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eval "$cmd"
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echo >&2
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echo >&2
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done
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