ssm using pipes

ssm

#!/bin/sh -x
#
# CLI Tool for accessing instances via ssm without having to pass in params
#
# Dependencies: awscli, zsh (Included by default on Catalina)
#

HELP=$(cat <<-EOF
  Usage:
    ssm i-073404e8ece4624b5 [OPTIONAL] --profile staging
EOF
     )

INSTANCE_ID=$1
if [ -z "$INSTANCE_ID" ]; then
    echo "$HELP"
    exit 0
fi

PROFILE=${3:-default}

prompt_for_mfa_if_needed () {
    # Make sure MFA is gathered if needed:
    aws --region us-west-2  ec2 describe-instances --instance-id ${INSTANCE_ID} --profile ${PROFILE} &> /dev/null
}

find_region_of_instance() {
    REGIONS=(
        'us-west-1'
        'us-west-2'
        'us-east-1'
        'eu-central-1'
        'eu-west-1'
        'eu-west-3'
	      'ap-southeast-1'
        'ap-southeast-2'
    )

    for region in "${REGIONS[@]}"; do
        (aws --region "${region}" ec2 describe-instances --instance-id ${INSTANCE_ID} --profile ${PROFILE} &> /dev/null) && echo "${region}" &
    done | head -n 1
}

prompt_for_mfa_if_needed
region=$(find_region_of_instance)
aws ssm start-session --target ${INSTANCE_ID} --region ${region} --profile ${PROFILE}