Some useful bash functions for dealing with AWS/EC2/OpsWorks stacks and instances

bash_aws_functions.sh

# AWS functions
function instances() {
  if [[ $1 == '--ip' || $1 == '--ips' ]]; then
    filter='.[PrivateIpAddress]'
    output='text'
    shift
  elif [[ $1 == '--id' || $1 == '--ids' ]]; then
    filter='.[InstanceId]'
    output='text'
    shift
  else
    # shellcheck disable=SC2016
    filter='.{Id: InstanceId, State: State.Name, PrivateIp: PrivateIpAddress, Name: (Tags[?Key==`Name`].Value | [0])}'
    output='table'
  fi
  stack=${1:-edwin}
  profile=${2:-default}
  region=${3:-eu-central-1}

  aws --profile="$profile" --region="$region" --output "$output" ec2 describe-instances \
    --filter \
      "Name=tag-key,Values=*:stack*" \
      "Name=tag-value,Values=${stack}" \
      "Name=instance-state-name,Values=pending,running" \
    --query "Reservations[].Instances[]${filter}"
}
export -f instances

function owstacks() {
  profile=${1:-default}
  region=${2:-eu-central-1}
  aws --profile="$profile" --region=us-east-1 opsworks describe-stacks --output table \
    --query 'sort_by(Stacks, &Name)[].{Name: Name, StackId: StackId, SourceUrl: CustomCookbooksSource.Url}'
}
export -f owstacks

function cfstacks() {
  profile=${1:-default}
  region=${2:-eu-central-1}
  aws --profile="$profile" --region="$region" cloudformation describe-stacks --output table \
    --query 'sort_by(Stacks, &StackName)[].{Name: StackName, Status: StackStatus}'
}
export -f cfstacks

function awsintip() {
  instanceids=${1:-XXX}
  profile=${2:-default}
  region=${3:-eu-central-1}
  aws --output=text --profile="$profile" --region="$region" ec2 describe-instances --instance-ids "$instanceids" \
    --query 'Reservations[].Instances[].PrivateIpAddress'
}
export -f awsintip

function awsextip() {
  instanceids=${1:-XXX}
  profile=${2:-default}
  region=${3:-eu-central-1}
  aws --output=text --profile="$profile" --region="$region" ec2 describe-instances --instance-ids "$instanceids" \
    --query 'Reservations[].Instances[].PublicIpAddress'
}
export -f awsextip

function awssh() {
  IFS='@' read -r -a parts <<< "$1"
  if [[ ${#parts[*]} -gt 1 ]]; then
    username="${parts[0]}@"
    IFS='.' read -r -a hostparts <<< "${parts[1]}"
  else
    IFS='.' read -r -a hostparts <<< "${parts[0]}"
  fi
  if [[ ${#hostparts[*]} != 4 ]]; then
    echo "Can't parse hostname $1"
    return 1
  fi
  domain=$(IFS=. ; echo "${hostparts[*]:2}")
  if [ "$domain" == "appdev.io" ]; then
    profile="default"
  elif [ "$domain" == "lgi.io" ]; then
    profile="prod"
  else
    echo "Domain $domain not recognized"
    return 1
  fi
  hostname=${hostparts[0]}
  stack=${hostparts[1]}
  region=${2:-eu-central-1}

  ip=$(aws --output text --profile="$profile" --region="$region" ec2 describe-instances \
    --filter \
      Name=tag:opsworks:stack,Values="$stack" \
      Name=instance-state-name,Values=pending,running \
      Name=tag:opsworks:instance,Values="$hostname" \
    --query 'Reservations[0].Instances[0].PrivateIpAddress')

  if [[ $ip =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
    ssh "$username$ip"
  else
    echo "IP: '$ip' not valid. (If None then no instance was found, check region maybe)"
    return 1
  fi
}
export -f awssh

These need and expect awscli to be installed.
They also expect a profile 'default' and a profile 'prod' to be configured for awscli.
awssh is hardcoded for use with appdev.io and lgi.io domains. appdev.io being development and corresponding to the 'default' profile and lgi.io being production and using the 'prod' profile.